@font-face {
    font-family: 'Amsterdam Four';
    src: url('fonts/Amsterdam-Four.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
}

/* ==========================================================================
   SYSTEM DESIGN & CORE VALUES (WebPage2026 - Dr. Rogerio Martins)
   ========================================================================== */

:root {
    /* Color Palette */
    --bg-pure: #050505;
    --bg-primary: #0A0A0A;
    --bg-secondary: #120E0C; /* Dark chocolate brown/black blend */
    --bg-tertiary: #1A1513;  /* Lighter chocolate brown for cards */
    --bg-card: rgba(26, 21, 19, 0.5);
    
    --border-color: rgba(226, 232, 240, 0.08);
    --border-color-bronze: rgba(140, 120, 108, 0.15);
    
    --accent-silver: #F1F5F9;
    --accent-silver-muted: #94A3B8;
    --accent-bronze: #8C786C; /* Elegant Medical Copper/Bronze */
    --accent-bronze-light: #D4C9C3;
    
    --text-white: #FFFFFF;
    --text-light: #F8FAFC;
    --text-muted: #94A3B8;
    --text-dark: #1E293B;
    
    /* Gradients */
    --gradient-silver: linear-gradient(135deg, #FFFFFF 0%, #CBD5E1 50%, #94A3B8 100%);
    --gradient-bronze: linear-gradient(135deg, #D4C9C3 0%, #8C786C 55%, #5D4D44 100%);
    --gradient-dark: linear-gradient(180deg, #120E0C 0%, #0A0A0A 100%);
    --gradient-card-hover: radial-gradient(circle at 50% 0%, rgba(140, 120, 108, 0.15) 0%, transparent 70%);

    /* Typography */
    --font-serif: 'Cormorant Garamond', serif;
    --font-sans: 'Inter', sans-serif;
    --font-signature: 'Amsterdam Four', cursive;
    
    /* Layout */
    --max-width: 1240px;
    --header-height: 80px;
    
    /* Transitions & Shadows */
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: all 0.2s ease;
    
    --shadow-silver-glow: 0 0 25px rgba(241, 245, 249, 0.05);
    --shadow-bronze-glow: 0 0 30px rgba(140, 120, 108, 0.1);
    --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.7);
}

/* ==========================================================================
   RESET & GLOBAL ESTYLES
   ========================================================================== */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--bg-pure);
    color: var(--text-light);
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-pure);
}
::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 4px;
    border: 2px solid var(--bg-pure);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent-bronze);
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-fast);
}

button, input, select, textarea {
    font-family: inherit;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Selection style */
::selection {
    background-color: var(--accent-bronze);
    color: var(--text-white);
}

/* Typography elements */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    font-weight: 500;
    line-height: 1.2;
    color: var(--text-white);
}

p {
    font-weight: 300;
    color: var(--text-muted);
}

.italic-serif {
    font-family: var(--font-serif);
    font-style: italic;
    font-weight: 400;
}

/* ==========================================================================
   UTILITY COMPONENTS (Buttons, Dividers, Tags)
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 2rem;
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    border-radius: 0px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-primary {
    background: var(--gradient-bronze);
    color: var(--text-white);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-bronze-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(140, 120, 108, 0.25);
    background: linear-gradient(135deg, #e3d8d2 0%, #9a867a 55%, #6a5950 100%);
}

.btn-outline {
    background: transparent;
    color: var(--text-white);
    border: 1px solid rgba(226, 232, 240, 0.2);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--accent-silver);
    transform: translateY(-2px);
}

.btn-silver {
    background: transparent;
    color: var(--accent-silver);
    border: 1px solid var(--accent-silver-muted);
}

.btn-silver:hover {
    background: var(--accent-silver);
    color: var(--bg-pure);
    box-shadow: var(--shadow-silver-glow);
    transform: translateY(-2px);
}

.btn-block {
    display: flex;
    width: 100%;
}

.section-tag {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    color: var(--accent-bronze);
    text-transform: uppercase;
    display: block;
    margin-bottom: 0.8rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 300;
    letter-spacing: 0.03em;
}

.silver-divider {
    width: 60px;
    height: 1px;
    background: var(--gradient-silver);
    margin: 1.5rem auto 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

/* ==========================================================================
   NAVIGATION BAR (Glassmorphism Navbar)
   ========================================================================== */

.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: rgba(5, 5, 5, 0.6);
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    z-index: 1000;
    transition: var(--transition-smooth);
}

.main-header.scrolled {
    background-color: rgba(10, 10, 10, 0.95);
    height: 70px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.header-container {
    max-width: var(--max-width);
    height: 100%;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand-logo {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    color: var(--text-white);
}

.brand-sub {
    font-family: var(--font-sans);
    font-size: 0.6rem;
    font-weight: 600;
    letter-spacing: 0.25em;
    color: var(--accent-bronze);
    margin-top: 2px;
}

.primary-navigation {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    align-items: center;
    list-style: none;
    gap: 2.5rem;
}

.nav-link {
    font-size: 0.8rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent-silver-muted);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--gradient-silver);
    transition: var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
    color: var(--text-white);
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.nav-cta {
    padding: 0.5rem 1.2rem;
    font-size: 0.75rem;
}

/* Mobile Nav Toggle */
.mobile-nav-toggle {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
    z-index: 1001;
}

.mobile-nav-toggle .bar {
    width: 25px;
    height: 2px;
    background-color: var(--text-white);
    transition: var(--transition-fast);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */

.hero-section {
    position: relative;
    min-height: 100vh;
    padding-top: calc(var(--header-height) + 2rem);
    background: linear-gradient(180deg, rgba(5, 5, 5, 0.82) 0%, rgba(10, 10, 10, 0.93) 100%), url('images/hero_bokeh_bg.png') no-repeat center center;
    background-size: cover;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-container {
    max-width: var(--max-width);
    width: 100%;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-content {
    display: flex;
    flex-direction: column;
}

.hero-tagline {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.3em;
    color: var(--accent-bronze);
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: 3.8rem;
    font-weight: 300;
    line-height: 1.1;
    letter-spacing: -0.01em;
    margin-bottom: 2rem;
}

.hero-description {
    font-size: 1.05rem;
    max-width: 540px;
    margin-bottom: 3rem;
}

.hero-ctas {
    display: flex;
    gap: 1.5rem;
}

/* Hero Image Wrapper (Estilo libre sin marcos) */
.hero-image-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-img {
    max-width: 100%;
    height: auto;
    filter: drop-shadow(0 15px 30px rgba(0, 0, 0, 0.8));
    mask-image: linear-gradient(to bottom, black 80%, transparent 100%);
    -webkit-mask-image: linear-gradient(to bottom, black 80%, transparent 100%);
    transition: var(--transition-smooth);
}

.hero-signature {
    position: absolute;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    width: 280px;
    max-width: 80%;
    height: auto;
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.95));
    pointer-events: none;
    user-select: none;
    z-index: 10;
    opacity: 0.95;
}

.hero-img:hover {
    transform: scale(1.02);
}

/* Scroll indicator animation */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    justify-content: center;
}

.mouse-icon {
    width: 25px;
    height: 42px;
    border: 2px solid var(--accent-silver-muted);
    border-radius: 20px;
    display: block;
    position: relative;
    opacity: 0.7;
    transition: var(--transition-fast);
}

.mouse-icon:hover {
    opacity: 1;
    border-color: var(--accent-bronze);
}

.mouse-icon .wheel {
    width: 4px;
    height: 8px;
    background-color: var(--accent-bronze);
    border-radius: 2px;
    display: block;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollWheel 1.8s ease-in-out infinite;
}

@keyframes scrollWheel {
    0% { top: 8px; opacity: 1; }
    50% { top: 22px; opacity: 0; }
    100% { top: 8px; opacity: 1; }
}

/* ==========================================================================
   SERVICES SECTION (Premium Cards & Glow Hover)
   ========================================================================== */

.services-section {
    padding: 8rem 2rem;
    max-width: var(--max-width);
    margin: 0 auto;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

/* Oculoplastia Intro Panel */
.oculoplastia-intro-panel {
    display: grid;
    grid-template-columns: 1.45fr 0.55fr;
    gap: 3rem;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color-bronze);
    padding: 3rem;
    margin-bottom: 4rem;
    align-items: center;
    position: relative;
}

.oculoplastia-intro-panel::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: var(--gradient-bronze);
}

.oculoplastia-heading {
    font-size: 1.8rem;
    font-weight: 400;
    margin-bottom: 1rem;
    color: var(--text-white);
}

.oculoplastia-p {
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: 1rem;
    color: var(--text-muted);
}

.oculoplastia-p strong {
    color: var(--text-white);
}

.oculoplastia-p:last-of-type {
    margin-bottom: 0;
}

.oculoplastia-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: rgba(140, 120, 108, 0.08);
    border: 1px dashed var(--accent-bronze);
    padding: 2.5rem 1.5rem;
}

.badge-icon {
    font-size: 2.5rem;
    color: var(--accent-bronze-light);
    margin-bottom: 1rem;
}

.badge-title {
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-white);
}

/* Specialty Lists inside Cards */
.card-list {
    list-style: none;
    margin: 1.5rem 0 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.card-list li {
    font-size: 0.9rem;
    color: var(--text-muted);
    display: flex;
    align-items: flex-start;
    gap: 8px;
    line-height: 1.4;
}

.card-list li i {
    color: var(--accent-bronze-light);
    font-size: 0.8rem;
    margin-top: 4px;
}

/* Highlight Card Style */
.service-card.highlight-card {
    border: 1px solid var(--border-color-bronze);
    background: linear-gradient(135deg, rgba(26, 21, 19, 0.6) 0%, rgba(10, 10, 10, 0.8) 100%);
}

.service-card {
    position: relative;
    padding: 3rem;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    transition: var(--transition-smooth);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-bronze);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-smooth);
}

.service-card:hover {
    background-color: var(--bg-secondary);
    border-color: var(--border-color-bronze);
    transform: translateY(-5px);
    box-shadow: var(--shadow-bronze-glow), var(--shadow-card);
}

.service-card:hover::before {
    transform: scaleX(1);
}

/* radial glow on hover */
.card-glow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-card-hover);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-smooth);
}

.service-card:hover .card-glow {
    opacity: 1;
}

.service-icon {
    font-size: 2.2rem;
    color: var(--accent-bronze-light);
    margin-bottom: 2rem;
    background: linear-gradient(135deg, #FFFFFF 0%, #8C786C 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: var(--transition-smooth);
}

.service-card:hover .service-icon {
    transform: scale(1.1);
}

.service-card .service-title {
    font-size: 1.6rem;
    font-weight: 400;
    margin-bottom: 1rem;
    letter-spacing: 0.02em;
}

.service-text {
    font-size: 0.95rem;
    margin-bottom: 2rem;
    line-height: 1.7;
}

.service-link {
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent-bronze-light);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: auto;
}

.service-link i {
    transition: var(--transition-fast);
}

.service-card:hover .service-link {
    color: var(--text-white);
}

.service-card:hover .service-link i {
    transform: translateX(5px);
}

/* ==========================================================================
   VISION SIMULATOR SECTION
   ========================================================================== */

.simulator-section {
    padding: 8rem 2rem;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.simulator-container {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 0.95fr 1.05fr;
    gap: 4rem;
    align-items: center;
}

.simulator-controls {
    display: flex;
    flex-direction: column;
}

.controls-intro {
    font-size: 1rem;
    margin-bottom: 2rem;
}

/* Tabs */
.condition-tabs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.tab-btn {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--accent-silver-muted);
    padding: 1rem 1.2rem;
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: var(--transition-fast);
    text-align: center;
}

.tab-btn:hover {
    border-color: rgba(140, 120, 108, 0.4);
    color: var(--text-white);
}

.tab-btn.active {
    background: var(--bg-tertiary);
    border-color: var(--accent-bronze);
    color: var(--text-white);
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}

/* Slider Controls */
.slider-control-group {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 1.5rem 2rem;
    margin-bottom: 2.5rem;
    transition: var(--transition-smooth);
    opacity: 1;
}

.slider-control-group.disabled {
    opacity: 0.3;
    pointer-events: none;
}

.control-label-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.control-label {
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.control-value {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent-bronze-light);
}

/* Range input styling */
.premium-slider {
    -webkit-appearance: none;
    width: 100%;
    height: 4px;
    background: var(--bg-primary);
    outline: none;
    border: none;
}

.premium-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent-silver);
    border: 2px solid var(--accent-bronze);
    cursor: pointer;
    box-shadow: 0 0 10px rgba(140, 120, 108, 0.5);
    transition: var(--transition-fast);
}

.premium-slider::-webkit-slider-thumb:hover {
    background: var(--accent-bronze-light);
    transform: scale(1.15);
}

.condition-description {
    background: rgba(255, 255, 255, 0.02);
    border-left: 2px solid var(--accent-bronze);
    padding: 1.5rem 2rem;
    margin-bottom: 2.5rem;
    min-height: 140px;
}

.description-title {
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
    font-weight: 400;
    letter-spacing: 0.02em;
}

.description-text {
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Simulator Visual Display */
.simulator-display {
    width: 100%;
    display: flex;
    justify-content: center;
}

.display-frame {
    position: relative;
    width: 100%;
    max-width: 560px;
    aspect-ratio: 4/3;
    padding: 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-card);
    overflow: hidden;
}

.display-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: none;
    transition: filter 0.15s ease-out; /* rapid response on slider */
}

/* Glaucoma dark vignette overlay */
.glaucoma-overlay {
    position: absolute;
    top: 1rem;
    left: 1rem;
    right: 1rem;
    bottom: 1rem;
    pointer-events: none;
    box-shadow: inset 0 0 100px 30px rgba(0, 0, 0, 1);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.simulator-label {
    position: absolute;
    bottom: 1.8rem;
    right: 1.8rem;
    background: rgba(0, 0, 0, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 0.4rem 1rem;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-muted);
}

/* ==========================================================================
   BEFORE/AFTER COMPARISON SECTION
   ========================================================================== */

.comparison-section {
    padding: 8rem 2rem;
    max-width: var(--max-width);
    margin: 0 auto;
}

.comparison-content {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 4rem;
    align-items: center;
}

.comparison-visual {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

/* Case Selector Tabs (Before/After Slider) */
.case-tabs {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 0.5rem;
}

.case-tab-btn {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    color: var(--accent-silver-muted);
    padding: 0.6rem 1.5rem;
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: var(--transition-fast);
    text-transform: uppercase;
}

.case-tab-btn:hover {
    border-color: rgba(140, 120, 108, 0.4);
    color: var(--text-white);
}

.case-tab-btn.active {
    background: var(--bg-tertiary);
    border-color: var(--accent-bronze);
    color: var(--text-white);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.split-slider-container {
    position: relative;
    width: 100%;
    max-width: 600px;
    aspect-ratio: 4/3;
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-card);
    background: var(--bg-primary);
}

.comp-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    user-select: none;
    -webkit-user-drag: none;
}

/* Before Container (stays full) */
.image-before {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1; /* Establecer contexto de apilamiento base */
}

.image-before img {
    /* Mostrar fotografía clínica real sin filtros distorsionadores */
    filter: none;
}

/* After Container (gets resized dynamically) */
.image-after {
    position: absolute;
    top: 0;
    left: 0;
    width: 50%; /* Resized by JS */
    height: 100%;
    overflow: hidden;
    z-index: 2;
    transition: none; /* No transition during mouse drag */
}

.image-after .comp-img {
    width: var(--slider-width, 600px); /* Adaptativo mediante variable JS */
    max-width: none;
    height: 100%;
}

/* Badges for identification */
.label-badge {
    position: absolute;
    top: 1rem;
    background: rgba(0, 0, 0, 0.75);
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 0.4rem 1rem;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    pointer-events: none;
    z-index: 3;
}

.before-badge {
    left: 1rem; /* A la izquierda, donde se muestra el "Antes" */
    right: auto;
    color: var(--accent-silver-muted);
}

.after-badge {
    right: 1rem; /* A la derecha, donde se muestra el "Después" */
    left: auto;
    color: var(--accent-bronze-light);
    border-color: var(--accent-bronze);
}

/* Slider Handle Bar */
.slider-handle {
    position: absolute;
    top: 0;
    left: 50%; /* Positioned by JS */
    width: 4px;
    height: 100%;
    background: var(--gradient-bronze);
    z-index: 4;
    cursor: ew-resize;
    transform: translateX(-50%);
    pointer-events: auto;
}

.handle-line {
    display: none; /* Las líneas son redundantes ya que el contenedor .slider-handle es la barra misma */
}

.handle-button {
    position: absolute;
    bottom: 40px; /* Colocado abajo para evitar obstruir el área de los ojos */
    left: 50%;
    transform: translateX(-50%);
    width: 46px;
    height: 46px;
    background: var(--bg-secondary);
    border: 2px solid var(--accent-bronze);
    border-radius: 50%;
    color: var(--accent-bronze-light);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.5), var(--shadow-bronze-glow);
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

.slider-handle:hover .handle-button {
    background: var(--accent-bronze);
    color: var(--text-white);
    transform: translateX(-50%) scale(1.05);
}

/* Side Text Info */
.comparison-text-info {
    display: flex;
    flex-direction: column;
}

.comparison-info-title {
    font-size: 2rem;
    font-weight: 300;
    margin-bottom: 1.5rem;
}

.comparison-info-p {
    margin-bottom: 2rem;
    font-size: 1rem;
    line-height: 1.7;
}

.comparison-list {
    list-style: none;
    margin-bottom: 3rem;
}

.comparison-list li {
    display: block;
    margin-bottom: 1rem;
    font-size: 0.95rem;
    color: var(--accent-silver-muted);
    line-height: 1.6;
}

.comparison-list li i {
    color: var(--accent-bronze);
    font-size: 1rem;
    margin-right: 8px;
    vertical-align: middle;
}

@media (min-width: 768px) {
    .comparison-list li {
        display: grid;
        grid-template-columns: 24px 200px 1fr;
        align-items: start;
        gap: 12px;
    }
    .comparison-list li i {
        margin-right: 0;
        vertical-align: top;
        margin-top: 4px; /* Centra el icono visualmente con la primera línea de texto */
    }
}

/* ==========================================================================
   ABOUT THE DOCTOR SECTION
   ========================================================================== */

.about-section {
    padding: 8rem 2rem;
    background: var(--gradient-dark);
    border-top: 1px solid var(--border-color);
}

.about-container {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 5rem;
    align-items: center;
}

.about-info-panel {
    display: flex;
    flex-direction: column;
}

.doctor-name {
    font-size: 3.2rem;
    font-weight: 300;
    letter-spacing: -0.01em;
    margin-bottom: 0.5rem;
}

.doctor-specialty {
    font-size: 1.1rem;
    font-weight: 400;
    font-family: var(--font-sans);
    color: var(--accent-silver-muted);
    letter-spacing: 0.05em;
}

.doctor-bio {
    font-size: 1.05rem;
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.credentials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.credential-item {
    display: flex;
    flex-direction: column;
}

.cred-num {
    font-family: var(--font-serif);
    font-size: 2.8rem;
    color: var(--accent-bronze-light);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.cred-text {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Magazine Quote display */
.about-visual-panel {
    display: flex;
    justify-content: center;
    align-items: center;
}

.magazine-frame {
    position: relative;
    padding: 3.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color-bronze);
    box-shadow: var(--shadow-bronze-glow);
    max-width: 460px;
}

.quote-icon {
    font-size: 2.5rem;
    color: var(--accent-bronze);
    opacity: 0.3;
    display: block;
    margin-bottom: 1rem;
}

.quote-text {
    font-family: var(--font-serif);
    font-size: 1.6rem;
    line-height: 1.4;
    font-style: italic;
    color: var(--text-white);
    margin-bottom: 1.5rem;
}

.quote-author {
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent-bronze-light);
}

.magazine-border {
    position: absolute;
    top: -6px;
    left: -6px;
    right: -6px;
    bottom: -6px;
    border: 1px solid rgba(226, 232, 240, 0.05);
    pointer-events: none;
}

/* ==========================================================================
   CONTACT & APPOINTMENT FORM SECTION
   ========================================================================== */

.contact-section {
    padding: 8rem 2rem;
    background-color: var(--bg-primary);
    border-top: 1px solid var(--border-color);
}

.contact-container {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 0.95fr 1.05fr;
    gap: 5rem;
    align-items: flex-start;
}

.contact-meta-info {
    display: flex;
    flex-direction: column;
}

.contact-title {
    font-size: 2.5rem;
    font-weight: 300;
    margin-bottom: 1.5rem;
}

.contact-subtitle {
    font-size: 1.05rem;
    margin-bottom: 3.5rem;
    line-height: 1.7;
}

.contact-details-list {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.detail-item {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.detail-icon {
    font-size: 1.5rem;
    color: var(--accent-bronze);
    background: var(--bg-tertiary);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color-bronze);
    flex-shrink: 0;
}

.detail-content {
    display: flex;
    flex-direction: column;
}

.detail-label {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.3rem;
    color: var(--text-white);
}

.detail-p {
    font-size: 0.95rem;
    color: var(--text-muted);
}

.detail-p a:hover {
    color: var(--accent-bronze-light);
}

/* Premium Form Styling */
.contact-form-wrapper {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 3.5rem;
    box-shadow: var(--shadow-card);
    position: relative;
}

.contact-form-wrapper::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 40px;
    height: 40px;
    border-bottom: 2px solid var(--accent-bronze);
    border-right: 2px solid var(--accent-bronze);
    pointer-events: none;
}

.form-heading {
    font-size: 1.8rem;
    font-weight: 400;
    margin-bottom: 2.5rem;
    letter-spacing: 0.02em;
}

.form-group-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    margin-bottom: 1.8rem;
}

.form-group label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--accent-bronze-light);
    margin-bottom: 0.6rem;
}

.form-group input, 
.form-group select, 
.form-group textarea {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-white);
    padding: 0.9rem 1.2rem;
    font-size: 0.95rem;
    font-weight: 300;
    transition: var(--transition-smooth);
}

.form-group input:focus, 
.form-group select:focus, 
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-bronze);
    box-shadow: inset 0 0 10px rgba(140, 120, 108, 0.15), var(--shadow-bronze-glow);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238C786C' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1.2rem center;
    background-size: 1.1rem;
}

.form-group textarea {
    resize: none;
}

.form-privacy-note {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-align: center;
    margin-top: 1.2rem;
    line-height: 1.5;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.main-footer {
    background-color: var(--bg-pure);
    border-top: 1px solid var(--border-color);
    padding: 6rem 2rem 3rem;
}

.footer-top {
    max-width: var(--max-width);
    margin: 0 auto 4rem;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr 1fr;
    gap: 5rem;
}

.footer-brand-info {
    display: flex;
    flex-direction: column;
}

.footer-logo {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    color: var(--text-white);
    margin-bottom: 1rem;
}

.footer-tag {
    font-size: 0.9rem;
    margin-bottom: 2rem;
}

.social-links {
    display: flex;
    gap: 1.2rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: var(--accent-silver-muted);
    transition: var(--transition-fast);
}

.social-links a:hover {
    color: var(--text-white);
    border-color: var(--accent-bronze);
    background-color: var(--accent-bronze);
    transform: translateY(-3px);
}

.footer-header {
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1.8rem;
    color: var(--accent-bronze-light);
}

.footer-nav-links ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.footer-nav-links a {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.footer-nav-links a:hover {
    color: var(--text-white);
    padding-left: 5px;
}

.footer-schedule p {
    font-size: 0.9rem;
    margin-bottom: 0.8rem;
}

.footer-bottom {
    max-width: var(--max-width);
    margin: 0 auto;
    padding-top: 3rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.8rem;
    margin-bottom: 0.5rem;
}

.medical-license {
    color: var(--accent-bronze-light) !important;
    opacity: 0.8;
}

/* ==========================================================================
   SCROLL REVEAL ANIMATIONS (Intersection Observer)
   ========================================================================== */

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* CSS Animation classes */
.animate-fade-in {
    opacity: 0;
    animation: fadeIn 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.animate-fade-in-delay-1 {
    opacity: 0;
    animation: fadeIn 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.2s forwards;
}

.animate-fade-in-delay-2 {
    opacity: 0;
    animation: fadeIn 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.4s forwards;
}

.animate-fade-in-delay-3 {
    opacity: 0;
    animation: fadeIn 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.6s forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================================================
   RESPONSIVE DESIGN (Media Queries)
   ========================================================================== */

@media (max-width: 1024px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .oculoplastia-intro-panel {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 2rem;
    }
    
    .simulator-container,
    .comparison-content,
    .about-container,
    .contact-container {
        grid-template-columns: 1fr;
        gap: 3.5rem;
    }
    
    .about-visual-panel,
    .simulator-display,
    .comparison-visual {
        order: -1; /* visual on top for single column layouts */
    }
    
    .footer-top {
        grid-template-columns: 1fr 1fr;
        gap: 3rem;
    }
    
    .footer-brand-info {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 70px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-section {
        padding-top: var(--header-height);
        min-height: auto;
        padding-bottom: 6rem;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        gap: 2.5rem;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-description {
        margin: 0 auto 2.5rem;
    }
    
    .hero-ctas {
        justify-content: center;
    }
    
    .hero-signature {
        width: 190px;
        bottom: 0.8rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .service-card {
        padding: 2.5rem 2rem;
    }
    
    .condition-tabs {
        grid-template-columns: 1fr;
    }
    
    .contact-form-wrapper {
        padding: 2.5rem 1.8rem;
    }
    
    .form-group-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    /* Navigation Bar Mobile drawer */
    .mobile-nav-toggle {
        display: flex;
    }
    
    .primary-navigation {
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        height: calc(100vh - var(--header-height));
        background-color: var(--bg-primary);
        z-index: 999;
        transform: translateX(100%);
        transition: var(--transition-smooth);
        border-top: 1px solid var(--border-color);
        display: block;
        padding: 3rem 2rem;
    }
    
    .primary-navigation[data-visible="true"] {
        transform: translateX(0);
    }
    
    .nav-list {
        flex-direction: column;
        gap: 2.5rem;
        align-items: flex-start;
    }
    
    .nav-link {
        font-size: 1.1rem;
    }
    
    .nav-cta {
        display: flex;
        width: 100%;
        text-align: center;
        margin-top: 1.5rem;
    }
    
    .mobile-nav-toggle[aria-expanded="true"] .bar:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }
    .mobile-nav-toggle[aria-expanded="true"] .bar:nth-child(2) {
        opacity: 0;
    }
    .mobile-nav-toggle[aria-expanded="true"] .bar:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }
    
    .footer-top {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .footer-brand-info {
        grid-column: span 1;
    }
}

/* ==========================================================================
   PATIENT EDUCATION / BIBLIOTECA DIGITAL SECTION
   ========================================================================== */

.education-section {
    padding: 8rem 2rem;
    max-width: var(--max-width);
    margin: 0 auto;
}

.education-intro {
    text-align: center;
    max-width: 700px;
    margin: -2.5rem auto 4rem auto;
    font-size: 1.05rem;
    line-height: 1.7;
}

.education-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.education-card {
    position: relative;
    padding: 3rem 2.5rem;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: var(--transition-smooth);
}

.education-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-bronze);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-smooth);
}

.education-card:hover {
    background-color: var(--bg-secondary);
    border-color: var(--border-color-bronze);
    transform: translateY(-5px);
    box-shadow: var(--shadow-bronze-glow), var(--shadow-card);
}

.education-card:hover::before {
    transform: scaleX(1);
}

.education-card:hover .card-glow {
    opacity: 1;
}

.edu-icon {
    font-size: 2.2rem;
    color: var(--accent-bronze-light);
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #FFFFFF 0%, #8C786C 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: var(--transition-smooth);
}

.education-card:hover .edu-icon {
    transform: scale(1.1);
}

.edu-card-title {
    font-size: 1.4rem;
    font-weight: 400;
    margin-bottom: 0.8rem;
    letter-spacing: 0.02em;
    min-height: 3.4rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.edu-card-text {
    font-size: 0.9rem;
    margin-bottom: 2rem;
    line-height: 1.6;
    color: var(--text-muted);
    min-height: 3rem;
}

.btn-edu {
    padding: 0.6rem 1.5rem;
    font-size: 0.75rem;
    margin-top: auto;
    border-color: var(--accent-bronze-light);
    color: var(--accent-bronze-light);
}

.education-card:hover .btn-edu {
    background: var(--gradient-bronze);
    color: var(--text-white);
    border-color: transparent;
    box-shadow: var(--shadow-bronze-glow);
}

/* ==========================================================================
   BROCHURE MODAL SYSTEM (Premium Overlay)
   ========================================================================== */

.brochure-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(5, 5, 5, 0.85);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    padding: 2rem;
}

.brochure-modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.brochure-modal-container {
    background-color: var(--bg-pure);
    border: 1px solid var(--border-color-bronze);
    box-shadow: 0 30px 70px rgba(0, 0, 0, 0.8), var(--shadow-bronze-glow);
    width: 100%;
    max-width: 1100px;
    height: 80vh;
    max-height: 750px;
    position: relative;
    transform: scale(0.95);
    opacity: 0;
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    overflow: hidden;
}

.brochure-modal-overlay.active .brochure-modal-container {
    transform: scale(1);
    opacity: 1;
}

/* Close button style */
.brochure-close-btn {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: transparent;
    border: none;
    font-size: 3rem;
    color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    z-index: 2010; /* Por encima del modal container */
    transition: var(--transition-fast);
    line-height: 1;
}

.brochure-close-btn:hover {
    color: var(--text-white);
    transform: rotate(90deg);
}

.brochure-modal-body {
    display: grid;
    grid-template-columns: 0.4fr 0.6fr;
    width: 100%;
    height: 100%;
    overflow: hidden; /* Evitar que el contenedor se estire verticalmente */
}

/* Left Aesthetic Panel inside Modal */
.brochure-left-panel {
    background: linear-gradient(135deg, #120e0c 0%, #050505 100%);
    border-right: 1px solid var(--border-color-bronze);
    padding: 4rem 3rem;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    overflow: hidden;
}

.brochure-left-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, rgba(140, 120, 108, 0.08) 0%, transparent 60%);
    pointer-events: none;
}

.brochure-left-content {
    position: relative;
    z-index: 2;
}

.brochure-left-tagline {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--accent-bronze);
    text-transform: uppercase;
    display: block;
    margin-bottom: 1rem;
}

.brochure-main-title {
    font-size: 2.4rem;
    font-weight: 300;
    line-height: 1.2;
    color: var(--text-white);
}

.brochure-main-sub {
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--accent-bronze-light);
    margin-top: 0.5rem;
    letter-spacing: 0.03em;
}

.brochure-left-doctor {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-white);
    margin-top: 1rem;
}

.brochure-left-specialty {
    font-size: 0.75rem;
    color: var(--accent-silver-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.brochure-left-note {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.5;
    margin-top: 2rem;
}

/* Original Brochure Download Area */
.brochure-original-links {
    margin-top: auto;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.original-links-label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--accent-bronze-light);
    display: block;
    margin-bottom: 0.8rem;
    text-transform: uppercase;
}

.original-buttons {
    display: flex;
    gap: 0.8rem;
}

.original-link-btn {
    padding: 0.5rem 1rem;
    font-size: 0.7rem;
    border-color: rgba(226, 232, 240, 0.15);
    background-color: rgba(255, 255, 255, 0.01);
}

.original-link-btn i {
    margin-left: 5px;
    font-size: 0.8rem;
    color: var(--accent-bronze-light);
}

/* Right Content Panel inside Modal */
.brochure-right-panel {
    background-color: var(--bg-pure);
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 0; /* Previene el estiramiento en la cuadrícula */
    overflow: hidden;
}

/* Modal Tabs Navigation */
.brochure-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-primary);
}

.brochure-tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--accent-silver-muted);
    padding: 1.5rem 1rem;
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    cursor: pointer;
    transition: var(--transition-fast);
    text-align: center;
}

.brochure-tab-btn:hover {
    color: var(--text-white);
    background-color: rgba(255, 255, 255, 0.01);
}

.brochure-tab-btn.active {
    color: var(--text-white);
    border-color: var(--accent-bronze);
    background-color: rgba(140, 120, 108, 0.04);
}

/* Scrollable Text Content */
.brochure-text-content {
    flex: 1;
    padding: 4rem;
    overflow-y: auto;
    background-color: var(--bg-pure);
    min-height: 0; /* Clave para forzar que el contenedor respete el alto del padre y active scroll */
}

/* Custom Scrollbar for Modal Text Content */
.brochure-text-content::-webkit-scrollbar {
    width: 6px;
}
.brochure-text-content::-webkit-scrollbar-track {
    background: var(--bg-pure);
}
.brochure-text-content::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 3px;
}
.brochure-text-content::-webkit-scrollbar-thumb:hover {
    background: var(--accent-bronze);
}

.brochure-inner-text {
    animation: brochureFadeIn 0.4s ease forwards;
}

@keyframes brochureFadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Structured content styles inside modal */
.brochure-section-title {
    font-size: 1.6rem;
    font-weight: 400;
    color: var(--text-white);
    margin-bottom: 1.5rem;
    letter-spacing: 0.02em;
    border-bottom: 1px solid var(--border-color-bronze);
    padding-bottom: 0.5rem;
}

.brochure-p {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 1.5rem;
    font-weight: 300;
}

.brochure-p strong {
    color: var(--text-white);
    font-weight: 500;
}

.brochure-list {
    list-style: none;
    margin-bottom: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.brochure-list li {
    font-size: 0.95rem;
    color: var(--text-muted);
    display: flex;
    align-items: flex-start;
    gap: 10px;
    line-height: 1.6;
}

.brochure-list li i {
    color: var(--accent-bronze-light);
    font-size: 0.8rem;
    margin-top: 6px;
    flex-shrink: 0;
}

.brochure-sub-title {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-white);
    margin: 2rem 0 1rem 0;
    letter-spacing: 0.02em;
}

/* ==========================================================================
   RESPONSIVE DESIGN ADDITIONS
   ========================================================================== */

@media (max-width: 1024px) {
    .education-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .education-grid {
        grid-template-columns: 1fr;
    }
    
    .brochure-modal-overlay {
        padding: 1rem;
    }
    
    .brochure-modal-container {
        height: 90vh;
        max-height: none;
    }
    
    .brochure-modal-body {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr;
        overflow-y: auto;
    }
    
    .brochure-left-panel {
        padding: 3rem 2rem 2rem 2rem;
        border-right: none;
        border-bottom: 1px solid var(--border-color-bronze);
    }
    
    .brochure-main-title {
        font-size: 1.8rem;
    }
    
    .brochure-text-content {
        padding: 2.5rem 2rem;
        overflow-y: visible; /* Scroll is handled by modal-body */
    }
    
    .brochure-tabs {
        flex-wrap: wrap;
    }
    
    .brochure-tab-btn {
        flex: none;
        width: 50%;
        padding: 1rem 0.5rem;
        font-size: 0.75rem;
    }
    
    .brochure-close-btn {
        top: 1rem;
        right: 1rem;
        font-size: 2.5rem;
    }
}

/* ==========================================================================
   IMAGE PREVIEW MODAL (Sub-overlay)
   ========================================================================== */

.image-preview-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(5, 5, 5, 0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 3000; /* Por encima del modal de trípticos */
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    padding: 2rem;
}

.image-preview-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.preview-close-btn {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: transparent;
    border: none;
    font-size: 3rem;
    color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    z-index: 3010;
    transition: var(--transition-fast);
    line-height: 1;
}

.preview-close-btn:hover {
    color: var(--text-white);
    transform: rotate(90deg);
}

.preview-content-container {
    max-width: 95%;
    max-height: 98vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border: 1px solid var(--border-color-bronze);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.9), var(--shadow-bronze-glow);
    background-color: var(--bg-pure);
    padding: 1.5rem;
    border-radius: 16px;
}

/* Interactive 3D Brochure Styles */
.brochure-3d-viewport {
    --page-size: min(82vh, 46vw);
    perspective: 2500px;
    width: calc(var(--page-size) * 2);
    height: var(--page-size);
    max-width: 95vw;
    max-height: 85vh;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto;
    overflow: visible;
}

.brochure-3d-book {
    width: var(--page-size);
    height: var(--page-size);
    position: absolute;
    left: 50%;
    top: 50%;
    transform-style: preserve-3d;
    transition: transform 0.8s cubic-bezier(0.25, 1, 0.5, 1);
    /* Estado cerrado: centrar la portada horizontal y verticalmente */
    transform: translate(-50%, -50%);
}

.brochure-3d-book.opened {
    /* Estado abierto: el lomo (borde izquierdo) se alinea al 50% horizontal, centrado verticalmente */
    transform: translate(0, -50%);
}

/* Páginas */
.brochure-page, .brochure-page-flipping {
    position: absolute;
    top: 0;
    left: 0;
    width: var(--page-size);
    height: var(--page-size);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

/* La página de la derecha (interior inmóvil) */
.brochure-right-page {
    left: 0;
    z-index: 1;
}

.brochure-right-page img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background-color: #0b0c10;
    display: block;
}

/* La página de la portada que gira (bisagra a la izquierda) */
.brochure-page-flipping {
    left: 0;
    z-index: 2;
    transform-origin: left center;
    transform-style: preserve-3d;
    transition: transform 0.8s cubic-bezier(0.25, 1, 0.5, 1);
    cursor: pointer;
    box-shadow: none; /* Quitamos sombra al contenedor para dársela a las caras */
}

.brochure-page-flipping.flipped {
    transform: rotateY(-180deg);
}

.brochure-face {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    backface-visibility: visible !important;
    -webkit-backface-visibility: visible !important;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.brochure-front {
    z-index: 2;
    transform: rotateY(0deg);
    visibility: visible;
    transition: visibility 0s 0s;
}

.brochure-front img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background-color: #0b0c10;
    display: block;
}

.brochure-back {
    z-index: 1;
    transform: rotateY(180deg);
    visibility: hidden;
    transition: visibility 0s 0.4s;
}

/* Manejo de z-index y visibilidad durante el flip para evitar efecto espejo y transparencias */
.brochure-page-flipping.flipped .brochure-front {
    z-index: 1;
    visibility: hidden;
    transition: visibility 0s 0.4s;
}

.brochure-page-flipping.flipped .brochure-back {
    z-index: 2;
    visibility: visible;
    transition: visibility 0s 0s;
}

/* Contraportada decorativa (izquierda al abrir) */
.brochure-back-cover {
    background: radial-gradient(circle at center, #1e1b18 0%, #0d0c0b 100%);
    border: 2px solid var(--accent-bronze);
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    box-sizing: border-box;
}

.back-cover-design {
    border: 1px solid rgba(140, 120, 108, 0.3);
    padding: 2rem;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 0.8rem;
    border-radius: 6px;
    background-color: rgba(5, 5, 5, 0.3);
}

.brand-logo-small {
    font-family: var(--font-serif);
    font-size: clamp(0.9rem, 1.5vh, 1.4rem);
    color: var(--accent-bronze-light);
    letter-spacing: 0.15em;
    font-weight: 600;
    text-align: center;
}

.brand-sub-small {
    font-family: var(--font-sans);
    font-size: clamp(0.6rem, 1vh, 0.85rem);
    color: var(--accent-silver-muted);
    letter-spacing: 0.2em;
    font-weight: 500;
    text-align: center;
}

.viewer-instructions {
    text-align: center;
    margin-top: 2rem;
    font-size: 0.9rem;
    color: var(--text-muted);
    font-family: var(--font-sans);
    letter-spacing: 0.02em;
}

/* Responsividad para pantallas pequeñas */
@media (max-width: 768px) {
    .preview-content-container {
        padding: 1.5rem;
    }
    .brochure-3d-viewport {
        --page-size: min(50vh, 45vw);
        max-height: 55vh;
    }
}

/* Estilos para páginas de contenido de texto del folleto 3D */
.brochure-3d-book.back-closed {
    /* Estado cerrado por atrás: centrar la contraportada */
    transform: translate(50%, -50%);
}

.brochure-content-page::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 10;
    border-radius: 12px;
}

.brochure-face.brochure-front .brochure-content-page::after {
    /* Página derecha: lomo del libro a la izquierda de la hoja */
    box-shadow: inset 15px 0 25px rgba(0, 0, 0, 0.6);
}

.brochure-face.brochure-back .brochure-content-page::after {
    /* Página izquierda: lomo del libro a la derecha de la hoja */
    box-shadow: inset -15px 0 25px rgba(0, 0, 0, 0.6);
}

.brochure-content-page {
    background: radial-gradient(circle at center, #191b20 0%, #0f1013 100%);
    border: 1px solid rgba(197, 168, 128, 0.25);
    padding: 2.2rem 1.8rem;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    height: 100%;
    width: 100%;
    color: var(--text-muted);
    font-family: var(--font-sans);
    position: relative;
    overflow-y: auto;
}

.brochure-content-page::-webkit-scrollbar {
    width: 4px;
}
.brochure-content-page::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
}
.brochure-content-page::-webkit-scrollbar-thumb {
    background: var(--accent-bronze);
    border-radius: 2px;
}

/* Ajustes de tipografía para el interior del libro 3D para que sea legible y quepa bien */
.brochure-content-page .brochure-section-title {
    font-family: var(--font-serif);
    font-size: clamp(1.1rem, 2.2vh, 1.4rem);
    font-weight: 500;
    color: var(--accent-bronze-light);
    margin-top: 0;
    margin-bottom: 0.8rem;
    border-bottom: 1px solid rgba(140, 120, 108, 0.2);
    padding-bottom: 0.4rem;
    letter-spacing: 0.02em;
}

.brochure-content-page .brochure-sub-title {
    font-family: var(--font-serif);
    font-size: clamp(0.9rem, 1.8vh, 1.05rem);
    font-weight: 500;
    color: var(--text-white);
    margin-top: 0.5rem;
    margin-bottom: 0.4rem;
}

.brochure-content-page .brochure-p {
    font-size: clamp(0.75rem, 1.5vh, 0.82rem);
    line-height: 1.6;
    margin-bottom: 0.8rem;
    color: var(--text-muted);
    font-weight: 300;
}

.brochure-content-page .brochure-p strong {
    color: var(--text-white);
    font-weight: 500;
}

.brochure-content-page .brochure-list {
    list-style: none;
    margin-bottom: 0.8rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding-left: 0;
}

.brochure-content-page .brochure-list li {
    font-size: clamp(0.75rem, 1.5vh, 0.82rem);
    color: var(--text-muted);
    line-height: 1.5;
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.brochure-content-page .brochure-list li i {
    color: var(--accent-bronze-light);
    font-size: 0.7rem;
    margin-top: 4px;
}

.brochure-page-number {
    position: absolute;
    bottom: 0.8rem;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.7rem;
    color: var(--accent-bronze-light);
    opacity: 0.5;
    letter-spacing: 0.1em;
    font-family: var(--font-sans);
}

.brochure-blank-page {
    background: radial-gradient(circle at center, #191b20 0%, #0f1013 100%);
    border: 1px solid rgba(197, 168, 128, 0.25);
    height: 100%;
    width: 100%;
    box-sizing: border-box;
}

.left-signature-page {
    justify-content: center !important;
    align-items: center !important;
    text-align: center;
}

.signature-container {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
}

.doctor-signature-text {
    font-family: var(--font-signature);
    font-size: clamp(1.8rem, 3.8vh, 2.5rem);
    color: var(--accent-bronze);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    opacity: 0.85;
    letter-spacing: 0.05em;
}

.brochure-image-page {
    padding: 0 !important;
}

.brochure-full-img {
    width: 100% !important;
    height: 100% !important;
    object-fit: cover !important;
    display: block !important;
    position: relative !important;
    left: 0 !important;
    top: 0 !important;
    border-radius: inherit;
}