/* CekDosis - Modern Beautiful CSS (Mobile-First) */

/* === Variables === */
:root {
    --primary: #0d9488;
    --primary-light: #14b8a6;
    --primary-dark: #0f766e;
    --primary-glow: rgba(13, 148, 136, 0.35);
    --accent: #e11d48;
    --accent-light: #fb7185;
    --success: #16a34a;
    --warning: #ca8a04;
    --info: #3b82f6;
    --bg-0: #0a0f1a;
    --bg-1: #0f172a;
    --bg-2: #1e293b;
    --bg-light: #f0fdfa;
    --bg-card: rgba(255, 255, 255, 0.06);
    --bg-card-hover: rgba(255, 255, 255, 0.1);
    --text: #e2e8f0;
    --text-dark: #1e293b;
    --text-light: #94a3b8;
    --text-muted: #64748b;
    --white: #ffffff;
    --border: rgba(255, 255, 255, 0.1);
    --border-light: #cbd5e1;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.15);
    --shadow-md: 0 8px 24px rgba(0,0,0,0.2);
    --shadow-lg: 0 16px 48px rgba(0,0,0,0.3);
    --shadow-glow: 0 0 40px var(--primary-glow);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font);
    background: var(--bg-0);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* === Ambient Background === */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: 0;
    background:
        radial-gradient(ellipse 80% 50% at 20% -10%, rgba(13, 148, 136, 0.15), transparent),
        radial-gradient(ellipse 60% 40% at 80% 10%, rgba(59, 130, 246, 0.1), transparent),
        radial-gradient(ellipse 70% 50% at 50% 100%, rgba(225, 29, 72, 0.08), transparent);
    pointer-events: none;
}

/* === Container === */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
    position: relative;
    z-index: 1;
}

/* === Header === */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 15, 26, 0.8);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    min-height: 60px;
}

.logo {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--white);
    display: flex;
    align-items: center;
    gap: 8px;
    letter-spacing: -0.02em;
}

.logo i {
    color: var(--primary-light);
    font-size: 1.5rem;
    filter: drop-shadow(0 0 8px var(--primary-glow));
}

.logo .highlight {
    background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav a {
    color: var(--text-light);
    text-decoration: none;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.9rem;
    transition: var(--transition);
    position: relative;
}

.nav a:hover, .nav a:active {
    color: var(--white);
    background: rgba(255, 255, 255, 0.08);
}

.mobile-menu-btn {
    display: none;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--border);
    color: var(--text);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 1.1rem;
    transition: var(--transition);
}

.mobile-menu-btn:active {
    transform: scale(0.95);
}

/* === Hero === */
.hero {
    position: relative;
    z-index: 1;
    padding: 48px 0 40px;
    text-align: center;
}

.hero-content {
    max-width: 600px;
    margin: 0 auto;
}

.hero-content h1 {
    font-size: clamp(1.8rem, 6vw, 3rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #fff 0%, var(--primary-light) 50%, var(--accent-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    font-size: clamp(0.95rem, 2.5vw, 1.1rem);
    color: var(--text-light);
    margin-bottom: 28px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 24px;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    min-height: 48px;
    touch-action: manipulation;
    -webkit-user-select: none;
    user-select: none;
}

.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: var(--white);
    box-shadow: 0 4px 16px var(--primary-glow);
}

.btn-primary:hover {
    box-shadow: 0 6px 24px var(--primary-glow);
    transform: translateY(-2px);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--white);
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--primary-light);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    max-width: 400px;
    margin: 32px auto 0;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 16px 8px;
    text-align: center;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.stat-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary-light);
    transform: translateY(-2px);
}

.stat-number {
    font-size: 1.6rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 4px;
}

/* === Sections === */
.section {
    position: relative;
    z-index: 1;
    padding: 48px 0;
}

.section.bg-light {
    background: rgba(255, 255, 255, 0.02);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.section-title {
    font-size: clamp(1.3rem, 4vw, 1.8rem);
    font-weight: 700;
    color: var(--white);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
    letter-spacing: -0.02em;
}

.section-title i {
    color: var(--primary-light);
    font-size: 1.3em;
}

.section-subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 24px;
}

/* === Tools Grid === */
.tools-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

@media (min-width: 640px) {
    .tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .tools-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.tool-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    cursor: pointer;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.tool-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 0%, var(--primary-glow), transparent 70%);
    opacity: 0;
    transition: opacity 0.4s;
    pointer-events: none;
}

.tool-card:hover::before, .tool-card:active::before {
    opacity: 0.3;
}

.tool-card:hover, .tool-card:active {
    transform: translateY(-4px);
    border-color: var(--primary-light);
    box-shadow: var(--shadow-glow);
}

.tool-icon {
    font-size: 2.5rem;
    color: var(--primary-light);
    margin-bottom: 16px;
    filter: drop-shadow(0 0 12px var(--primary-glow));
}

.tool-card h3 {
    color: var(--white);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.tool-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 16px;
}

.tool-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: var(--white);
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* === Tool Panel (Modal) === */
.tool-panel {
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    overflow-y: auto;
    padding: 16px;
    animation: fadeIn 0.2s ease;
}

.tool-panel.hidden { display: none; }

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.tool-panel .container {
    background: var(--bg-1);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px 20px;
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    animation: slideUp 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px) scale(0.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.close-btn {
    position: sticky;
    top: 8px;
    float: right;
    background: var(--accent);
    color: var(--white);
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    z-index: 10;
    margin-bottom: 8px;
}

.close-btn:active { transform: scale(0.9); }

/* === About === */
.about-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

@media (min-width: 768px) {
    .about-content {
        grid-template-columns: 2fr 1fr;
    }
}

.about-text p {
    color: var(--text-light);
    margin-bottom: 16px;
    font-size: 0.95rem;
    line-height: 1.7;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--success);
    font-size: 0.9rem;
    font-weight: 500;
}

.feature-item i {
    font-size: 1.1rem;
}

/* === Disclaimer === */
.disclaimer {
    background: rgba(202, 138, 4, 0.1);
    border-top: 1px solid rgba(202, 138, 4, 0.3);
    padding: 16px 0;
}

.disclaimer p {
    color: #fbbf24;
    font-size: 0.85rem;
    line-height: 1.6;
}

/* === Footer === */
.footer {
    background: var(--bg-1);
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    padding: 24px 0;
    text-align: center;
    font-size: 0.85rem;
}

.footer-links {
    margin-top: 12px;
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--primary-light);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    padding: 4px 8px;
}

.footer-links a:hover {
    color: var(--white);
}

/* === Form Elements === */
input, select, textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
    min-height: 44px;
    -webkit-appearance: none;
    appearance: none;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px var(--primary-glow);
    background: rgba(255, 255, 255, 0.08);
}

input::placeholder, textarea::placeholder {
    color: var(--text-muted);
}

select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2394a3b8' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

label {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-light);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* === Symptom Checker === */
.symptom-search {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text);
    font-size: 1rem;
    margin-bottom: 16px;
    transition: var(--transition);
}

.symptom-search:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.symptom-list, .diagnosis-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.symptom-tag, .diagnosis-tag {
    padding: 8px 14px;
    border: 1px solid var(--border);
    border-radius: 999px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition);
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-light);
    touch-action: manipulation;
    min-height: 36px;
    display: inline-flex;
    align-items: center;
}

.symptom-tag:hover, .diagnosis-tag:hover {
    border-color: var(--primary-light);
    color: var(--primary-light);
    background: rgba(13, 148, 136, 0.1);
}

.symptom-tag.active, .diagnosis-tag.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: var(--white);
    border-color: var(--primary-light);
    box-shadow: 0 2px 8px var(--primary-glow);
}

.symptom-result, .assessment-result {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-top: 20px;
    animation: fadeIn 0.3s ease;
}

/* === Dosage Calculator === */
.dosage-form, .assessment-form, .lab-form {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    margin-bottom: 20px;
}

@media (min-width: 640px) {
    .dosage-form, .assessment-form, .lab-form {
        grid-template-columns: 1fr 1fr;
    }
}

.dosage-highlight {
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 12px 0;
    text-align: center;
}

.dosage-result {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-top: 20px;
    animation: fadeIn 0.3s ease;
}

/* === Lab Interpreter === */
.lab-result {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-top: 20px;
    animation: fadeIn 0.3s ease;
}

.lab-status {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.lab-normal { background: rgba(22, 163, 74, 0.2); color: #4ade80; }
.lab-high { background: rgba(220, 38, 38, 0.2); color: #f87171; }
.lab-low { background: rgba(202, 138, 4, 0.2); color: #fbbf24; }

/* === Care Plan === */
.careplan-output {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-top: 20px;
    white-space: pre-wrap;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.85rem;
    line-height: 1.7;
    max-height: 60vh;
    overflow-y: auto;
    color: var(--text-light);
}

/* === Scrollbar === */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.25);
}

/* === Utility === */
.text-center { text-align: center; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }

/* === Mobile Optimizations === */
@media (max-width: 480px) {
    .container { padding: 0 12px; }
    
    .header .container { padding: 10px 12px; }
    
    .logo { font-size: 1.15rem; }
    .logo i { font-size: 1.3rem; }
    
    .hero { padding: 32px 0 28px; }
    .hero-content h1 { font-size: 1.6rem; }
    .hero-content p { font-size: 0.9rem; }
    
    .hero-buttons { flex-direction: column; }
    .btn { width: 100%; }
    
    .hero-stats { gap: 8px; }
    .stat-card { padding: 12px 6px; }
    .stat-number { font-size: 1.3rem; }
    .stat-label { font-size: 0.6rem; }
    
    .section { padding: 32px 0; }
    .section-title { font-size: 1.2rem; }
    
    .tool-card { padding: 20px; }
    .tool-icon { font-size: 2rem; }
    
    .tool-panel { padding: 8px; }
    .tool-panel .container { padding: 20px 16px; border-radius: var(--radius-md); }
    
    .close-btn {
        position: fixed;
        top: 12px;
        right: 12px;
    }
    
    input, select, textarea { font-size: 16px; } /* Prevent zoom on iOS */
    
    .footer-links { flex-direction: column; gap: 8px; }
}

/* === Safe Area (notch phones) === */
@supports (padding: max(0px)) {
    .header .container {
        padding-left: max(16px, env(safe-area-inset-left));
        padding-right: max(16px, env(safe-area-inset-right));
    }
    
    .container {
        padding-left: max(16px, env(safe-area-inset-left));
        padding-right: max(16px, env(safe-area-inset-right));
    }
    
    .tool-panel {
        padding-top: max(16px, env(safe-area-inset-top));
        padding-bottom: max(16px, env(safe-area-inset-bottom));
    }
}

/* === Dark mode preference === */
@media (prefers-color-scheme: light) {
    :root {
        --bg-0: #f0fdfa;
        --bg-1: #ffffff;
        --bg-2: #f1f5f9;
        --bg-card: rgba(255, 255, 255, 0.8);
        --bg-card-hover: rgba(255, 255, 255, 0.95);
        --text: #1e293b;
        --text-light: #475569;
        --text-muted: #64748b;
        --border: #cbd5e1;
        --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
        --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
        --shadow-lg: 0 16px 48px rgba(0,0,0,0.1);
    }
    
    body::before {
        background:
            radial-gradient(ellipse 80% 50% at 20% -10%, rgba(13, 148, 136, 0.08), transparent),
            radial-gradient(ellipse 60% 40% at 80% 10%, rgba(59, 130, 246, 0.05), transparent);
    }
    
    .header {
        background: rgba(255, 255, 255, 0.85);
    }
    
    .tool-panel .container {
        background: var(--bg-1);
    }
    
    input, select, textarea {
        background: var(--bg-2);
        color: var(--text);
    }
    
    .symptom-search {
        background: var(--bg-2);
        color: var(--text);
    }
    
    .symptom-tag, .diagnosis-tag {
        background: var(--bg-2);
        color: var(--text-light);
    }
    
    .close-btn {
        position: fixed;
    }
}

/* === Reduced Motion === */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}