static/styles.css

/* ============================================
   Dr. AI — Google Material Design 3
   Premium Medical AI Interface
   ============================================ */

/* ---- Design Tokens ---- */
:root {
    /* Material Design 3 Color System */
    --md-primary: #1a73e8;
    --md-primary-dark: #0d47a1;
    --md-primary-light: #4fc3f7;
    --md-secondary: #0288d1;
    --md-tertiary: #00bcd4;
    --md-accent: #26c6da;
    
    /* Surface Colors */
    --md-surface: #0a0f1e;
    --md-surface-1: #111827;
    --md-surface-2: #1a2232;
    --md-surface-3: #1e2a3d;
    --md-surface-variant: #162032;
    
    /* Text Colors */
    --md-on-surface: #e8f0fe;
    --md-on-surface-variant: #9aa5c0;
    --md-on-primary: #ffffff;
    
    /* Semantic Colors */
    --severity-high: #ef4444;
    --severity-medium: #f59e0b;
    --severity-low: #10b981;
    --severity-normal: #10b981;
    
    /* Gradient */
    --gradient-primary: linear-gradient(135deg, #1a73e8 0%, #0288d1 50%, #00bcd4 100%);
    --gradient-card: linear-gradient(145deg, rgba(26, 115, 232, 0.05), rgba(0, 188, 212, 0.03));
    --gradient-hero: radial-gradient(ellipse at 30% 50%, rgba(26, 115, 232, 0.15) 0%, transparent 60%),
                      radial-gradient(ellipse at 70% 20%, rgba(0, 188, 212, 0.1) 0%, transparent 50%);
    
    /* Borders */
    --md-outline: rgba(26, 115, 232, 0.2);
    --md-outline-variant: rgba(255, 255, 255, 0.06);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 48px rgba(0, 0, 0, 0.5);
    --shadow-primary: 0 4px 24px rgba(26, 115, 232, 0.3);
    
    /* Typography */
    --font-display: 'Google Sans', 'Roboto', sans-serif;
    --font-body: 'Roboto', sans-serif;
    --font-mono: 'Roboto Mono', monospace;
    
    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.2, 0, 0, 1);
    --transition-normal: 300ms cubic-bezier(0.2, 0, 0, 1);
    --transition-slow: 500ms cubic-bezier(0.2, 0, 0, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-body);
    background-color: var(--md-surface);
    color: var(--md-on-surface);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

/* ---- Animated Background ---- */
.bg-animation {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.bg-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.12;
    animation: float-orb 20s infinite ease-in-out;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, #1a73e8, transparent);
    top: -200px;
    left: -200px;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #00bcd4, transparent);
    top: 40%;
    right: -150px;
    animation-delay: -7s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #0288d1, transparent);
    bottom: 10%;
    left: 20%;
    animation-delay: -14s;
}

@keyframes float-orb {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -40px) scale(1.05); }
    66% { transform: translate(-20px, 30px) scale(0.95); }
}

/* ---- Navigation ---- */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 15, 30, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--md-outline-variant);
    padding: var(--space-md) 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.brand-icon {
    width: 44px;
    height: 44px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-primary);
}

.brand-icon .material-icons-round {
    color: white;
    font-size: 24px;
}

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

.brand-name {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 700;
    color: var(--md-on-surface);
    letter-spacing: -0.3px;
}

.brand-subtitle {
    font-size: 11px;
    color: var(--md-on-surface-variant);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.nav-badges {
    display: flex;
    gap: var(--space-sm);
}

.badge {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 500;
    border: 1px solid;
}

.badge .material-icons-round {
    font-size: 14px;
}

.badge-ai {
    background: rgba(26, 115, 232, 0.1);
    border-color: rgba(26, 115, 232, 0.3);
    color: #60a5fa;
}

.badge-research {
    background: rgba(0, 188, 212, 0.1);
    border-color: rgba(0, 188, 212, 0.3);
    color: #22d3ee;
}

/* ---- Main Content ---- */
.main-content {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

/* ---- Hero Section ---- */
.hero-section {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--space-3xl);
    align-items: center;
    padding: var(--space-3xl) 0 var(--space-2xl);
    background: var(--gradient-hero);
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    background: rgba(26, 115, 232, 0.12);
    border: 1px solid rgba(26, 115, 232, 0.25);
    border-radius: var(--radius-full);
    padding: var(--space-xs) var(--space-md);
    font-size: 13px;
    font-weight: 500;
    color: #60a5fa;
    margin-bottom: var(--space-lg);
    width: fit-content;
}

.hero-eyebrow .material-icons-round {
    font-size: 16px;
    animation: sparkle 2s infinite;
}

@keyframes sparkle {
    0%, 100% { transform: scale(1) rotate(0deg); opacity: 1; }
    50% { transform: scale(1.2) rotate(15deg); opacity: 0.8; }
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(36px, 5vw, 56px);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -1px;
    color: var(--md-on-surface);
    margin-bottom: var(--space-lg);
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 17px;
    color: var(--md-on-surface-variant);
    max-width: 520px;
    line-height: 1.7;
    margin-bottom: var(--space-xl);
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.stat-number {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 700;
    color: var(--md-primary);
}

.stat-label {
    font-size: 12px;
    color: var(--md-on-surface-variant);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--md-outline-variant);
}

/* ---- Eye Graphic ---- */
.hero-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.eye-graphic {
    position: relative;
    width: 240px;
    height: 240px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.eye-outer {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    border: 2px solid rgba(26, 115, 232, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: rotate-slow 20s linear infinite;
    box-shadow: 0 0 30px rgba(26, 115, 232, 0.15), inset 0 0 30px rgba(26, 115, 232, 0.05);
}

.eye-iris {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: radial-gradient(circle at 35% 35%, #1565c0, #0d47a1, #01579b);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 40px rgba(26, 115, 232, 0.5);
    position: relative;
    overflow: hidden;
}

.eye-pupil {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, #1a1a2e, #0a0a1a);
    position: relative;
    overflow: hidden;
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.5);
}

.eye-scan-line {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, #00e5ff, transparent);
    animation: scan-eye 2s ease-in-out infinite;
}

@keyframes scan-eye {
    0% { top: 0; opacity: 0; }
    20% { opacity: 1; }
    80% { opacity: 1; }
    100% { top: 100%; opacity: 0; }
}

.eye-ring {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(26, 115, 232, 0.2);
    animation: pulse-ring 3s ease-in-out infinite;
}

.ring-1 {
    width: 130px;
    height: 130px;
    top: -5px;
    left: -5px;
    animation-delay: 0s;
}

.ring-2 {
    width: 150px;
    height: 150px;
    top: -15px;
    left: -15px;
    animation-delay: 0.5s;
}

.ring-3 {
    width: 170px;
    height: 170px;
    top: -25px;
    left: -25px;
    animation-delay: 1s;
}

@keyframes pulse-ring {
    0%, 100% { opacity: 0.2; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.02); }
}

@keyframes rotate-slow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.scan-particles {
    position: absolute;
    inset: 0;
    animation: rotate-slow 8s linear infinite reverse;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: #00e5ff;
    box-shadow: 0 0 6px #00e5ff;
}

.particle:nth-child(1) { top: 10px; left: 50%; animation: blink 2s infinite 0s; }
.particle:nth-child(2) { top: 50%; right: 10px; animation: blink 2s infinite 0.3s; }
.particle:nth-child(3) { bottom: 10px; left: 50%; animation: blink 2s infinite 0.6s; }
.particle:nth-child(4) { top: 50%; left: 10px; animation: blink 2s infinite 0.9s; }
.particle:nth-child(5) { top: 25px; right: 25px; animation: blink 2s infinite 1.2s; }
.particle:nth-child(6) { bottom: 25px; left: 25px; animation: blink 2s infinite 1.5s; }

@keyframes blink {
    0%, 100% { opacity: 0.3; transform: scale(0.8); }
    50% { opacity: 1; transform: scale(1.2); }
}

/* ---- Disclaimer Banner ---- */
.disclaimer-banner {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    background: rgba(245, 158, 11, 0.08);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: var(--radius-lg);
    padding: var(--space-md) var(--space-lg);
    margin-bottom: var(--space-2xl);
    color: #fcd34d;
}

.disclaimer-banner .material-icons-round {
    font-size: 20px;
    flex-shrink: 0;
    margin-top: 2px;
}

.disclaimer-banner p {
    font-size: 14px;
    line-height: 1.5;
}

/* ---- Section Headers ---- */
.section-header {
    margin-bottom: var(--space-xl);
    text-align: center;
}

.section-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 600;
    color: var(--md-on-surface);
    margin-bottom: var(--space-sm);
}

.section-title .material-icons-round {
    color: var(--md-primary);
}

.section-subtitle {
    color: var(--md-on-surface-variant);
    font-size: 15px;
}

/* ---- Upload Section ---- */
.upload-section {
    margin-bottom: var(--space-2xl);
}

.upload-card {
    background: var(--gradient-card);
    border: 1px solid var(--md-outline-variant);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    transition: box-shadow var(--transition-normal);
}

.upload-card:hover {
    box-shadow: var(--shadow-lg);
}

.upload-zone {
    border: 2px dashed rgba(26, 115, 232, 0.3);
    border-radius: var(--radius-lg);
    padding: var(--space-3xl) var(--space-xl);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    background: rgba(26, 115, 232, 0.02);
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.upload-zone::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 50%, rgba(26, 115, 232, 0.05), transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.upload-zone:hover::before,
.upload-zone.drag-over::before {
    opacity: 1;
}

.upload-zone:hover,
.upload-zone.drag-over {
    border-color: rgba(26, 115, 232, 0.6);
    background: rgba(26, 115, 232, 0.04);
}

.upload-zone.drag-over {
    border-color: var(--md-primary);
    border-style: solid;
    transform: scale(1.01);
}

.upload-idle {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    text-align: center;
    pointer-events: none;
}

.upload-icon-wrapper {
    position: relative;
    width: 96px;
    height: 96px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.upload-icon-bg {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(26, 115, 232, 0.15), rgba(26, 115, 232, 0.05));
    animation: pulse-icon 3s ease-in-out infinite;
}

@keyframes pulse-icon {
    0%, 100% { transform: scale(1); opacity: 0.7; }
    50% { transform: scale(1.1); opacity: 1; }
}

.upload-icon {
    font-size: 48px;
    color: var(--md-primary);
    position: relative;
    z-index: 1;
}

.upload-title {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 600;
    color: var(--md-on-surface);
}

.upload-hint {
    color: var(--md-on-surface-variant);
    font-size: 14px;
}

.upload-formats {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
    justify-content: center;
}

.format-tag {
    background: rgba(26, 115, 232, 0.1);
    border: 1px solid rgba(26, 115, 232, 0.2);
    border-radius: var(--radius-sm);
    padding: 2px 10px;
    font-size: 12px;
    font-weight: 500;
    font-family: var(--font-mono);
    color: #60a5fa;
}

.upload-size-hint {
    font-size: 12px;
    color: var(--md-on-surface-variant);
    opacity: 0.7;
}

/* ---- Upload Preview ---- */
.upload-preview {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
    width: 100%;
}

.preview-image-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    max-width: 380px;
    box-shadow: var(--shadow-md);
}

.preview-image {
    width: 100%;
    max-height: 280px;
    object-fit: cover;
    display: block;
    border-radius: var(--radius-lg);
}

.preview-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-normal);
}

.preview-image-wrapper:hover .preview-overlay {
    background: rgba(0, 0, 0, 0.5);
}

.change-image-btn {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: white;
    color: #1a1a2e;
    border: none;
    border-radius: var(--radius-full);
    padding: var(--space-sm) var(--space-lg);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    opacity: 0;
    transform: translateY(10px);
    transition: all var(--transition-normal);
}

.change-image-btn .material-icons-round {
    font-size: 18px;
}

.preview-image-wrapper:hover .change-image-btn {
    opacity: 1;
    transform: translateY(0);
}

.preview-info {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    color: var(--md-on-surface-variant);
    font-size: 13px;
}

.preview-filename {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.preview-filename .material-icons-round {
    font-size: 16px;
    color: var(--md-primary);
}

/* ---- Upload Actions ---- */
.upload-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

/* ---- Buttons ---- */
.btn-primary {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    padding: 14px 32px;
    font-family: var(--font-display);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-primary);
    letter-spacing: 0.3px;
}

.btn-primary:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    box-shadow: none;
}

.btn-primary:not(:disabled):hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(26, 115, 232, 0.5);
}

.btn-primary:not(:disabled):active {
    transform: translateY(0);
}

.btn-primary .material-icons-round {
    font-size: 20px;
}

.btn-primary.loading .btn-text::after {
    content: '...';
    animation: dots 1.5s infinite;
}

@keyframes dots {
    0%, 20% { content: '.'; }
    40% { content: '..'; }
    60%, 100% { content: '...'; }
}

.btn-ripple {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle, rgba(255,255,255,0.3) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.btn-primary:active .btn-ripple {
    opacity: 1;
}

.btn-secondary {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: rgba(255, 255, 255, 0.06);
    color: var(--md-on-surface-variant);
    border: 1px solid var(--md-outline-variant);
    border-radius: var(--radius-full);
    padding: 13px 24px;
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    color: var(--md-on-surface);
}

.btn-secondary .material-icons-round {
    font-size: 18px;
}

/* ---- Loading Section ---- */
.loading-section {
    margin-bottom: var(--space-2xl);
}

.loading-card {
    background: var(--gradient-card);
    border: 1px solid var(--md-outline-variant);
    border-radius: var(--radius-xl);
    padding: var(--space-3xl) var(--space-xl);
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xl);
    box-shadow: var(--shadow-md);
}

.loading-visual {
    position: relative;
    width: 120px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.loading-eye {
    position: relative;
    width: 100px;
    height: 100px;
}

.loading-iris {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: radial-gradient(circle, #1565c0, #0d47a1);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: iris-pulse 1.5s ease-in-out infinite;
    box-shadow: 0 0 40px rgba(26, 115, 232, 0.6);
}

@keyframes iris-pulse {
    0%, 100% { transform: scale(1); box-shadow: 0 0 40px rgba(26, 115, 232, 0.6); }
    50% { transform: scale(1.05); box-shadow: 0 0 60px rgba(26, 115, 232, 0.8); }
}

.loading-pupil {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #0a0a1a;
    position: relative;
    overflow: hidden;
}

.loading-pupil::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, #00e5ff, transparent);
    animation: scan-eye 1.5s ease-in-out infinite;
}

.loading-scan {
    position: absolute;
    inset: -10px;
    border-radius: 50%;
    border: 2px solid transparent;
    border-top-color: #1a73e8;
    border-right-color: #1a73e8;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.loading-text {
    text-align: center;
}

.loading-title {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 600;
    color: var(--md-on-surface);
    margin-bottom: var(--space-sm);
}

.loading-subtitle {
    color: var(--md-on-surface-variant);
    font-size: 14px;
    transition: color var(--transition-normal);
}

.loading-steps {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.loading-step {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 13px;
    color: var(--md-on-surface-variant);
    transition: color var(--transition-normal);
}

.loading-step.active {
    color: var(--md-primary);
}

.loading-step.done {
    color: var(--severity-normal);
}

.step-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--md-outline-variant);
    transition: all var(--transition-normal);
    flex-shrink: 0;
}

.loading-step.active .step-dot {
    background: var(--md-primary);
    animation: pulse-dot 1s ease-in-out infinite;
}

.loading-step.done .step-dot {
    background: var(--severity-normal);
}

@keyframes pulse-dot {
    0%, 100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(26, 115, 232, 0.4); }
    50% { transform: scale(1.2); box-shadow: 0 0 0 6px rgba(26, 115, 232, 0); }
}

.step-connector {
    width: 40px;
    height: 2px;
    background: var(--md-outline-variant);
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
}

.loading-bar-wrapper {
    width: 100%;
    max-width: 400px;
}

.loading-bar {
    height: 4px;
    background: rgba(26, 115, 232, 0.15);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.loading-bar-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width 0.5s ease;
    width: 0%;
}

/* ---- Results Section ---- */
.results-section {
    margin-bottom: var(--space-2xl);
    animation: fade-in-up 0.5s ease-out;
}

@keyframes fade-in-up {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-xl);
    gap: var(--space-md);
}

.results-title-group .section-title {
    justify-content: flex-start;
    margin-bottom: var(--space-xs);
}

/* ---- Diagnosis Card ---- */
.diagnosis-card {
    background: var(--gradient-card);
    border: 1px solid var(--md-outline-variant);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    margin-bottom: var(--space-xl);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    position: relative;
}

.diagnosis-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
}

.diagnosis-header {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: var(--space-lg);
    align-items: start;
    margin-bottom: var(--space-lg);
}

.diagnosis-icon {
    font-size: 48px;
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(26, 115, 232, 0.1);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(26, 115, 232, 0.2);
}

.diagnosis-info {
    flex: 1;
}

.diagnosis-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--md-on-surface-variant);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: var(--space-xs);
}

.diagnosis-name {
    font-family: var(--font-display);
    font-size: 26px;
    font-weight: 700;
    color: var(--md-on-surface);
    margin-bottom: var(--space-md);
}

.diagnosis-meta {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.confidence-badge {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    background: rgba(26, 115, 232, 0.1);
    border: 1px solid rgba(26, 115, 232, 0.25);
    border-radius: var(--radius-full);
    padding: var(--space-xs) var(--space-md);
    font-size: 13px;
    font-weight: 600;
    color: #60a5fa;
}

.confidence-badge .material-icons-round {
    font-size: 16px;
}

.severity-badge {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    border-radius: var(--radius-full);
    padding: var(--space-xs) var(--space-md);
    font-size: 13px;
    font-weight: 600;
}

.severity-badge.severity-HIGH {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.25);
    color: #f87171;
}

.severity-badge.severity-MEDIUM {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.25);
    color: #fcd34d;
}

.severity-badge.severity-LOW,
.severity-badge.severity-NORMAL {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.25);
    color: #6ee7b7;
}

.severity-badge .material-icons-round {
    font-size: 16px;
}

.analyzed-image-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
}

.analyzed-image {
    width: 120px;
    height: 120px;
    border-radius: var(--radius-lg);
    object-fit: cover;
    border: 2px solid var(--md-outline);
    box-shadow: var(--shadow-sm);
}

.image-label {
    font-size: 11px;
    color: var(--md-on-surface-variant);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.diagnosis-description {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--md-outline-variant);
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-lg);
    font-size: 14px;
    line-height: 1.7;
    color: var(--md-on-surface-variant);
}

/* ---- Results Grid ---- */
.results-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

/* ---- Probability Card ---- */
.probability-card,
.recommendations-card {
    background: var(--gradient-card);
    border: 1px solid var(--md-outline-variant);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
}

.card-title {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 600;
    color: var(--md-on-surface);
    margin-bottom: var(--space-lg);
}

.card-title .material-icons-round {
    color: var(--md-primary);
    font-size: 20px;
}

.probability-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.probability-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.probability-label-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.probability-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--md-on-surface);
}

.probability-score {
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 600;
    color: var(--md-primary);
}

.probability-bar {
    height: 6px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.probability-bar-fill {
    height: 100%;
    border-radius: var(--radius-full);
    transition: width 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
    width: 0%;
}

.probability-item.top .probability-bar-fill {
    background: var(--gradient-primary);
}

.probability-item:not(.top) .probability-bar-fill {
    background: rgba(26, 115, 232, 0.4);
}

/* ---- Recommendations ---- */
.recommendations-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.recommendations-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    font-size: 14px;
    color: var(--md-on-surface-variant);
    line-height: 1.5;
}

.rec-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(26, 115, 232, 0.1);
    border: 1px solid rgba(26, 115, 232, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 1px;
}

.rec-icon .material-icons-round {
    font-size: 14px;
    color: var(--md-primary);
}

.disclaimer-box {
    display: flex;
    gap: var(--space-sm);
    background: rgba(245, 158, 11, 0.06);
    border: 1px solid rgba(245, 158, 11, 0.15);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    font-size: 12px;
    color: #fcd34d;
    line-height: 1.5;
}

.disclaimer-box .material-icons-round {
    font-size: 16px;
    flex-shrink: 0;
    margin-top: 1px;
}

/* ---- Analysis Note ---- */
.analysis-note {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    background: rgba(26, 115, 232, 0.05);
    border: 1px solid rgba(26, 115, 232, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--space-md) var(--space-lg);
    color: var(--md-on-surface-variant);
    font-size: 13px;
}

.analysis-note .material-icons-round {
    color: var(--md-primary);
    font-size: 20px;
    flex-shrink: 0;
}

/* ---- Error Toast ---- */
.error-toast {
    position: fixed;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    background: #1e1015;
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-full);
    padding: var(--space-md) var(--space-lg);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    max-width: 500px;
    width: calc(100% - 48px);
    animation: slide-up 0.3s ease-out;
    color: #f87171;
    font-size: 14px;
}

.error-toast .material-icons-round:first-child {
    font-size: 20px;
    flex-shrink: 0;
}

.error-toast p {
    flex: 1;
}

.error-toast button {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--md-on-surface-variant);
    display: flex;
    padding: 4px;
    border-radius: 50%;
    transition: background var(--transition-fast);
}

.error-toast button:hover {
    background: rgba(255, 255, 255, 0.1);
}

.error-toast button .material-icons-round {
    font-size: 18px;
}

@keyframes slide-up {
    from { transform: translateX(-50%) translateY(20px); opacity: 0; }
    to { transform: translateX(-50%) translateY(0); opacity: 1; }
}

/* ---- Conditions Section ---- */
.conditions-section {
    margin-bottom: var(--space-3xl);
}

.conditions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
}

.condition-card {
    background: var(--gradient-card);
    border: 1px solid var(--md-outline-variant);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    backdrop-filter: blur(10px);
}

.condition-card:hover,
.condition-card:focus {
    transform: translateY(-4px);
    border-color: rgba(26, 115, 232, 0.3);
    box-shadow: var(--shadow-primary);
    outline: none;
}

.condition-icon {
    font-size: 36px;
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
}

.condition-high {
    background: rgba(239, 68, 68, 0.08);
    border: 1px solid rgba(239, 68, 68, 0.15);
}

.condition-medium {
    background: rgba(245, 158, 11, 0.08);
    border: 1px solid rgba(245, 158, 11, 0.15);
}

.condition-normal {
    background: rgba(16, 185, 129, 0.08);
    border: 1px solid rgba(16, 185, 129, 0.15);
}

.condition-name {
    font-family: var(--font-display);
    font-size: 15px;
    font-weight: 600;
    color: var(--md-on-surface);
}

.condition-desc {
    font-size: 13px;
    color: var(--md-on-surface-variant);
    line-height: 1.5;
    flex: 1;
}

.condition-severity {
    display: inline-flex;
    align-items: center;
    border-radius: var(--radius-full);
    padding: 3px 12px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.3px;
    width: fit-content;
}

.severity-high {
    background: rgba(239, 68, 68, 0.1);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.severity-medium {
    background: rgba(245, 158, 11, 0.1);
    color: #fcd34d;
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.severity-normal {
    background: rgba(16, 185, 129, 0.1);
    color: #6ee7b7;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

/* ---- Footer ---- */
.footer {
    background: var(--md-surface-1);
    border-top: 1px solid var(--md-outline-variant);
    padding: var(--space-2xl) 0;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 700;
    color: var(--md-primary);
}

.footer-brand .material-icons-round {
    font-size: 22px;
}

.footer-tagline {
    font-size: 14px;
    color: var(--md-on-surface-variant);
}

.footer-disclaimer {
    font-size: 12px;
    color: #fcd34d;
    opacity: 0.8;
}

.footer-tech {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: 12px;
    color: var(--md-on-surface-variant);
    opacity: 0.6;
}

/* ---- Responsive Design ---- */
@media (max-width: 900px) {
    .hero-section {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .hero-eyebrow {
        margin: 0 auto var(--space-lg);
    }
    
    .hero-description {
        margin: 0 auto var(--space-xl);
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .diagnosis-header {
        grid-template-columns: auto 1fr;
    }
    
    .analyzed-image-wrapper {
        display: none;
    }
}

@media (max-width: 640px) {
    .main-content {
        padding: 0 var(--space-md);
    }
    
    .nav-container {
        padding: 0 var(--space-md);
    }
    
    .nav-badges {
        display: none;
    }
    
    .hero-section {
        padding: var(--space-2xl) 0;
    }
    
    .eye-graphic {
        width: 160px;
        height: 160px;
    }
    
    .eye-outer {
        width: 120px;
        height: 120px;
    }
    
    .eye-iris {
        width: 80px;
        height: 80px;
    }
    
    .conditions-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .results-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .loading-steps {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .step-connector {
        width: 2px;
        height: 20px;
    }
}

/* ---- Utility Classes ---- */
[hidden] {
    display: none !important;
}

.fade-in {
    animation: fade-in-up 0.4s ease-out forwards;
}