/* ============================================
   MedScan 3D — Full CSS
   Theme: White & Red | 3D Animations
   Made by Kumar Subodh
   ============================================ */

/* === CSS Variables === */
:root {
    --red: #E63946;
    --red-dark: #C1121F;
    --red-light: #FF6B6B;
    --red-glow: rgba(230, 57, 70, 0.4);
    --red-subtle: rgba(230, 57, 70, 0.08);
    --white: #FFFFFF;
    --off-white: #F8F9FA;
    --light-gray: #F1F3F5;
    --gray: #ADB5BD;
    --dark-gray: #495057;
    --dark: #212529;
    --darker: #1A1A2E;
    --glass: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(230, 57, 70, 0.15);
    --shadow-sm: 0 2px 10px rgba(0,0,0,0.04);
    --shadow-md: 0 8px 30px rgba(0,0,0,0.08);
    --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
    --shadow-red: 0 8px 30px rgba(230, 57, 70, 0.2);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --font: 'Poppins', sans-serif;
    --font-display: 'Orbitron', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* === Reset & Base === */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
    overflow-x: hidden;
}

body {
    font-family: var(--font);
    background: var(--white);
    color: var(--dark);
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

::selection {
    background: var(--red);
    color: var(--white);
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--off-white);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(var(--red), var(--red-dark));
    border-radius: 4px;
}

/* === Preloader === */
#preloader {
    position: fixed;
    inset: 0;
    background: var(--white);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.6s, visibility 0.6s;
}

#preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-container {
    text-align: center;
}

.dna-loader {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 30px;
    height: 60px;
    align-items: center;
}

.dna-strand {
    width: 8px;
    height: 40px;
    background: linear-gradient(var(--red), var(--red-light));
    border-radius: 4px;
    animation: dnaWave 1.2s ease-in-out infinite;
}

.dna-strand:nth-child(2) { animation-delay: 0.1s; }
.dna-strand:nth-child(3) { animation-delay: 0.2s; }
.dna-strand:nth-child(4) { animation-delay: 0.3s; }
.dna-strand:nth-child(5) { animation-delay: 0.4s; }

@keyframes dnaWave {
    0%, 100% { transform: scaleY(0.5); opacity: 0.5; }
    50% { transform: scaleY(1.5); opacity: 1; }
}

.loader-text {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--red);
    letter-spacing: 4px;
    margin-bottom: 8px;
}

.loader-sub {
    color: var(--gray);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.loader-bar {
    width: 200px;
    height: 3px;
    background: var(--light-gray);
    border-radius: 3px;
    margin: 0 auto;
    overflow: hidden;
}

.loader-progress {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--red), var(--red-light));
    border-radius: 3px;
    animation: loadProgress 2s ease-in-out forwards;
}

@keyframes loadProgress {
    0% { width: 0%; }
    100% { width: 100%; }
}

/* === Background Canvas === */
#bg-canvas {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    opacity: 0.3;
}

#organ-canvas {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    opacity: 0.15;
}

/* === Cursor Glow === */
#cursor-glow {
    position: fixed;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--red-glow) 0%, transparent 70%);
    pointer-events: none;
    z-index: 1;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 0.3s;
}

body:hover #cursor-glow {
    opacity: 1;
}

/* === Navbar === */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    transition: var(--transition);
}

#navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.logo-icon {
    width: 36px;
    height: 36px;
    color: var(--red);
    animation: heartbeat 2s infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    14% { transform: scale(1.2); }
    28% { transform: scale(1); }
    42% { transform: scale(1.2); }
    56% { transform: scale(1); }
}

.heartbeat-svg {
    width: 100%;
    height: 100%;
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--dark);
    letter-spacing: 2px;
}

.accent {
    color: var(--red);
}

.nav-links {
    display: flex;
    gap: 8px;
}

.nav-link {
    text-decoration: none;
    color: var(--dark-gray);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover, .nav-link.active {
    color: var(--red);
    background: var(--red-subtle);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--red);
    border-radius: 2px;
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--dark);
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--glass);
    backdrop-filter: blur(20px);
    padding: 20px;
    display: none;
    flex-direction: column;
    gap: 8px;
    z-index: 999;
    border-bottom: 1px solid var(--glass-border);
}

.mobile-menu.active {
    display: flex;
}

.mobile-link {
    text-decoration: none;
    color: var(--dark);
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    transition: var(--transition);
}

.mobile-link:hover {
    background: var(--red-subtle);
    color: var(--red);
}

/* === Sections === */
.section {
    position: relative;
    z-index: 2;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 100px 24px;
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    background: var(--red-subtle);
    color: var(--red);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: 1px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
}

.section-desc {
    color: var(--dark-gray);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* === Hero Section === */
.hero-section {
    padding-top: 120px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    padding: 0 24px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--red-subtle);
    color: var(--red);
    padding: 8px 20px;
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 24px;
    border: 1px solid rgba(230, 57, 70, 0.15);
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background: var(--red);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.5); }
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 24px;
}

.hero-title .line {
    display: block;
}

.gradient-text {
    background: linear-gradient(135deg, var(--red), var(--red-light), var(--red-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 1.15rem;
    color: var(--dark-gray);
    max-width: 600px;
    margin-bottom: 36px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--red), var(--red-dark));
    color: var(--white);
    box-shadow: var(--shadow-red);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(230, 57, 70, 0.35);
}

.btn-glow {
    position: absolute;
    inset: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255,255,255,0.2) 50%, transparent 70%);
    transform: translateX(-100%);
    animation: btnShine 3s infinite;
}

@keyframes btnShine {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.btn-secondary {
    background: var(--white);
    color: var(--dark);
    border: 2px solid var(--light-gray);
}

.btn-secondary:hover {
    border-color: var(--red);
    color: var(--red);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

.btn-icon-sm {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1px solid var(--light-gray);
    background: var(--white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.btn-icon-sm:hover {
    border-color: var(--red);
    color: var(--red);
}

/* === Hero Stats === */
.hero-stats {
    display: flex;
    align-items: center;
    gap: 32px;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-number {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 900;
    color: var(--red);
}

.stat-suffix {
    font-family: var(--font-display);
    font-size: 1.2rem;
    color: var(--red);
}

.stat-label {
    display: block;
    font-size: 0.85rem;
    color: var(--gray);
    margin-top: 4px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--light-gray);
}

.hero-3d-container {
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

#hero-3d {
    width: 100%;
    height: 100%;
}

/* === Scroll Indicator === */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--gray);
    font-size: 0.8rem;
    animation: fadeInUp 1s 2.5s both;
}

.mouse {
    width: 24px;
    height: 38px;
    border: 2px solid var(--gray);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
}

.wheel {
    width: 3px;
    height: 8px;
    background: var(--red);
    border-radius: 3px;
    animation: scrollWheel 2s infinite;
}

@keyframes scrollWheel {
    0% { transform: translateY(0); opacity: 1; }
    100% { transform: translateY(10px); opacity: 0; }
}

/* === Scanner Section === */
.scanner-section {
    background: var(--off-white);
}

.scanner-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: start;
}

.upload-zone {
    border: 2px dashed var(--gray);
    border-radius: var(--radius-lg);
    padding: 48px 32px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: var(--white);
    position: relative;
    overflow: hidden;
}

.upload-zone:hover, .upload-zone.dragover {
    border-color: var(--red);
    background: var(--red-subtle);
    transform: scale(1.01);
}

.upload-zone h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.upload-zone p {
    color: var(--gray);
    margin-bottom: 8px;
}

.upload-formats {
    font-size: 0.8rem;
    color: var(--gray);
}

.upload-icon-ring {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--red-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--red);
}

.upload-icon-ring svg {
    width: 28px;
    height: 28px;
}

/* Image Preview */
.image-preview-container {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    margin-top: 20px;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--light-gray);
}

.image-preview {
    position: relative;
    padding: 16px;
    max-height: 300px;
    overflow: hidden;
}

.image-preview img {
    width: 100%;
    border-radius: var(--radius-sm);
    object-fit: contain;
    max-height: 260px;
}

.scan-line {
    position: absolute;
    left: 16px;
    right: 16px;
    height: 2px;
    background: var(--red);
    box-shadow: 0 0 15px var(--red-glow), 0 0 30px var(--red-glow);
    display: none;
    animation: scanMove 2s linear;
}

@keyframes scanMove {
    0% { top: 16px; }
    100% { top: calc(100% - 16px); }
}

/* Demo Section */
.demo-section {
    margin-top: 24px;
}

.demo-section h4 {
    margin-bottom: 12px;
    font-size: 0.95rem;
}

.demo-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.demo-card {
    background: var(--white);
    border: 1px solid var(--light-gray);
    border-radius: var(--radius-md);
    padding: 16px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.demo-card:hover {
    border-color: var(--red);
    box-shadow: var(--shadow-red);
    transform: translateY(-4px);
}

.demo-icon {
    font-size: 2rem;
    margin-bottom: 8px;
}

.demo-card span {
    font-size: 0.85rem;
    font-weight: 500;
}

/* Results Card */
.results-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    border: 1px solid var(--glass-border);
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--light-gray);
}

.confidence-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(46, 204, 113, 0.1);
    color: #2ecc71;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.confidence-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #2ecc71;
    animation: pulse 1.5s infinite;
}

.results-empty, .results-loading, .results-content {
    padding: 40px 24px;
}

.results-empty {
    text-align: center;
}

.results-empty h4 {
    margin-bottom: 8px;
    color: var(--dark-gray);
}

.results-empty p {
    color: var(--gray);
    font-size: 0.9rem;
}

.empty-3d {
    width: 120px;
    height: 120px;
    margin: 0 auto 20px;
}

.empty-3d canvas {
    width: 100%;
    height: 100%;
}

/* AI Processing */
.ai-processing {
    text-align: center;
}

.processing-ring {
    position: relative;
    width: 120px;
    height: 120px;
    margin: 0 auto 30px;
}

.ring {
    position: absolute;
    inset: 0;
    border: 2px solid transparent;
    border-radius: 50%;
}

.r1 {
    border-top-color: var(--red);
    animation: spin 1.5s linear infinite;
}

.r2 {
    inset: 10px;
    border-right-color: var(--red-light);
    animation: spin 2s linear infinite reverse;
}

.r3 {
    inset: 20px;
    border-bottom-color: var(--red-dark);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.ai-core {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: var(--font-display);
    font-size: 1.2rem;
    color: var(--red);
    font-weight: 700;
}

.processing-steps {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 250px;
    margin: 0 auto;
}

.step {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    color: var(--gray);
    transition: var(--transition);
}

.step.active {
    color: var(--red);
    background: var(--red-subtle);
    font-weight: 500;
}

.step.done {
    color: #2ecc71;
}

.step-status {
    margin-left: auto;
}

/* Result Blocks */
.result-block {
    margin-bottom: 24px;
}

.block-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.block-header h4 {
    font-size: 1rem;
}

.copy-btn {
    background: var(--light-gray);
    border: none;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: var(--transition);
}

.copy-btn:hover {
    background: var(--red-subtle);
    color: var(--red);
}

.raw-text-box {
    background: var(--off-white);
    border: 1px solid var(--light-gray);
    border-radius: var(--radius-sm);
    padding: 16px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.8;
    max-height: 200px;
    overflow-y: auto;
    white-space: pre-wrap;
}

.medications-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.med-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--off-white);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--red);
    transition: var(--transition);
}

.med-item:hover {
    box-shadow: var(--shadow-sm);
    transform: translateX(4px);
}

.med-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--red-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.med-details h5 {
    font-size: 0.95rem;
    margin-bottom: 2px;
}

.med-details p {
    font-size: 0.8rem;
    color: var(--gray);
}

.ai-summary {
    background: linear-gradient(135deg, var(--red-subtle), rgba(255, 107, 107, 0.05));
    border: 1px solid rgba(230, 57, 70, 0.1);
    border-radius: var(--radius-md);
    padding: 20px;
    line-height: 1.8;
    font-size: 0.95rem;
}

.result-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

/* === Features Section === */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--white);
    border: 1px solid var(--light-gray);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
    cursor: default;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--red);
}

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

.feature-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, var(--red-glow) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.5s;
    pointer-events: none;
}

.feature-icon-3d {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    position: relative;
    z-index: 1;
}

.feature-canvas {
    width: 100%;
    height: 100%;
}

.feature-card h3 {
    font-size: 1.15rem;
    margin-bottom: 12px;
    position: relative;
    z-index: 1;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--dark-gray);
    line-height: 1.7;
    position: relative;
    z-index: 1;
}

.feature-tag {
    display: inline-block;
    margin-top: 16px;
    padding: 4px 12px;
    background: var(--red-subtle);
    color: var(--red);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    position: relative;
    z-index: 1;
}

/* === How It Works === */
.how-section {
    background: var(--white);
}

.steps-timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline-line {
    position: absolute;
    left: 40px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--red), var(--red-light), transparent);
}

.step-item {
    display: flex;
    gap: 32px;
    margin-bottom: 48px;
    align-items: flex-start;
}

.step-number {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 900;
    color: var(--red);
    width: 80px;
    text-align: center;
    flex-shrink: 0;
    position: relative;
}

.step-number::after {
    content: '';
    position: absolute;
    right: -4px;
    top: 50%;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--red);
    box-shadow: 0 0 10px var(--red-glow);
}

.step-content {
    background: var(--white);
    border: 1px solid var(--light-gray);
    border-radius: var(--radius-lg);
    padding: 24px;
    flex: 1;
    transition: var(--transition);
}

.step-content:hover {
    border-color: var(--red);
    box-shadow: var(--shadow-red);
}

.step-content h3 {
    font-size: 1.15rem;
    margin-bottom: 8px;
}

.step-content p {
    color: var(--dark-gray);
    font-size: 0.9rem;
}

.step-3d {
    width: 60px;
    height: 60px;
    margin-bottom: 12px;
}

.step-canvas {
    width: 100%;
    height: 100%;
}

/* === Organs Showcase === */
.organs-section {
    background: var(--off-white);
}

.organ-showcase {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 32px;
    align-items: center;
}

#body-3d-canvas {
    width: 100%;
    height: 500px;
    border-radius: var(--radius-lg);
    background: var(--white);
    box-shadow: var(--shadow-md);
}

.organ-info-panel {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--glass-border);
}

.organ-info-panel h3 {
    color: var(--red);
    font-size: 1.3rem;
    margin-bottom: 16px;
}

.organ-info-panel p {
    color: var(--dark-gray);
    line-height: 1.8;
}

/* === Testimonials === */
.testimonials-section {
    background: var(--white);
}

.testimonials-slider {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.testimonial-card {
    background: var(--white);
    border: 1px solid var(--light-gray);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--red);
}

.stars {
    color: #FFD700;
    font-size: 1.2rem;
    margin-bottom: 16px;
}

.testimonial-card > p {
    font-size: 0.95rem;
    color: var(--dark-gray);
    line-height: 1.8;
    margin-bottom: 20px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.author-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--red), var(--red-light));
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
}

.testimonial-author strong {
    display: block;
    font-size: 0.95rem;
}

.testimonial-author span {
    font-size: 0.8rem;
    color: var(--gray);
}

/* === About === */
.about-section {
    background: var(--off-white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.about-content p {
    color: var(--dark-gray);
    line-height: 1.8;
    margin-bottom: 24px;
}

.tech-stack h4 {
    margin-bottom: 12px;
    color: var(--red);
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tech-tag {
    padding: 6px 14px;
    background: var(--white);
    border: 1px solid var(--light-gray);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition);
}

.tech-tag:hover {
    border-color: var(--red);
    color: var(--red);
    background: var(--red-subtle);
}

.about-visual {
    height: 400px;
}

#about-3d {
    width: 100%;
    height: 100%;
    border-radius: var(--radius-lg);
}

/* === Contact === */
.contact-section {
    background: var(--white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 48px;
    align-items: start;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    position: relative;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-md);
    font-family: var(--font);
    font-size: 0.95rem;
    transition: var(--transition);
    background: var(--off-white);
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--red);
    box-shadow: 0 0 0 4px var(--red-subtle);
    background: var(--white);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.info-card {
    background: var(--off-white);
    border-radius: var(--radius-md);
    padding: 24px;
    border: 1px solid var(--light-gray);
    transition: var(--transition);
}

.info-card:hover {
    border-color: var(--red);
    box-shadow: var(--shadow-sm);
}

.info-icon {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.info-card h4 {
    font-size: 0.95rem;
    margin-bottom: 4px;
}

.info-card p {
    color: var(--dark-gray);
    font-size: 0.9rem;
}

/* === Footer === */
#footer {
    background: var(--darker);
    color: var(--white);
    padding: 60px 24px 20px;
    position: relative;
    z-index: 2;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand p {
    color: var(--gray);
    margin-top: 12px;
    font-size: 0.9rem;
}

.footer-brand .logo-text {
    color: var(--white);
}

.footer-links h4 {
    margin-bottom: 16px;
    font-size: 1rem;
}

.footer-links a {
    display: block;
    color: var(--gray);
    text-decoration: none;
    padding: 4px 0;
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--red-light);
    padding-left: 8px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    text-align: center;
}

.watermark {
    font-size: 1rem;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.watermark strong {
    color: var(--red-light);
    font-family: var(--font-display);
    letter-spacing: 2px;
}

.footer-bottom p {
    color: var(--gray);
    font-size: 0.8rem;
}

/* === Floating Watermark === */
.floating-watermark {
    position: fixed;
    bottom: 20px;
    left: 20px;
    background: var(--glass);
    backdrop-filter: blur(10px);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.75rem;
    color: var(--dark-gray);
    border: 1px solid var(--glass-border);
    z-index: 999;
    animation: floatWatermark 3s ease-in-out infinite;
}

.floating-watermark strong {
    color: var(--red);
}

@keyframes floatWatermark {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

/* === Back to Top === */
.back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--red), var(--red-dark));
    color: var(--white);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-red);
    opacity: 0;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
}

.back-to-top svg {
    width: 20px;
    height: 20px;
}

/* === Animations === */
.animate-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-in.visible {
    opacity: 1;
    transform: translateY(0);
}

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

@keyframes float {
    0%, 100% { transform: translateY(0) rotateY(0); }
    50% { transform: translateY(-20px) rotateY(180deg); }
}

@keyframes glow {
    0%, 100% { box-shadow: 0 0 5px var(--red-glow); }
    50% { box-shadow: 0 0 20px var(--red-glow), 0 0 40px var(--red-glow); }
}

/* === Responsive === */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .testimonials-slider {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .mobile-toggle { display: flex; }
    
    .hero-title {
        font-size: clamp(2rem, 8vw, 3rem);
    }
    
    .hero-3d-container {
        display: none;
    }
    
    .scanner-grid,
    .about-grid,
    .contact-grid,
    .organ-showcase {
        grid-template-columns: 1fr;
    }
    
    .features-grid,
    .testimonials-slider {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .hero-stats {
        gap: 20px;
    }
    
    .steps-timeline {
        padding-left: 0;
    }
    
    .timeline-line {
        left: 20px;
    }
    
    .step-item {
        gap: 16px;
    }
    
    .step-number {
        width: 40px;
        font-size: 1.5rem;
    }
    
    .demo-cards {
        grid-template-columns: 1fr;
    }
    
    .result-actions {
        flex-direction: column;
    }
}