/* ===== ToolStack Pro — Design System ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

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

:root {
    /* Dark Mode (Default) - Refined Palette */
    --bg-primary: #05050C;
    --bg-secondary: #0A0A16;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.06);
    --bg-glass: rgba(255, 255, 255, 0.05);
    --border: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.12);
    --text-primary: #F8FAFC;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;
    --accent: #6366F1;
    --accent-glow: rgba(99, 102, 241, 0.25);
    --cyan: #06B6D4;
    --green: #10B981;
    --yellow: #F59E0B;
    --red: #EF4444;
    --purple: #8B5CF6;
    --radius: 24px;
    --radius-sm: 12px;
    --radius-xs: 8px;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1280px;
}

body.light-mode {
    --bg-primary: #F8FAFC;
    --bg-secondary: #FFFFFF;
    --bg-card: #FFFFFF;
    --bg-card-hover: #F1F5F9;
    --bg-glass: rgba(255, 255, 255, 0.7);
    --border: #E2E8F0;
    --border-hover: #CBD5E1;
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --text-muted: #94A3B8;
    --accent: #4F46E5;
    --accent-glow: rgba(79, 70, 229, 0.1);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

html {
    scroll-behavior: smooth;
}

html.light-mode-root {
    background-color: #F8FAFC;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Background glow effects */
body::before {
    content: '';
    position: fixed;
    top: -200px;
    left: -200px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    z-index: -1;
    animation: floatGlow 20s ease-in-out infinite;
}

body::after {
    content: '';
    position: fixed;
    bottom: -200px;
    right: -200px;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 217, 255, 0.1) 0%, transparent 70%);
    z-index: -1;
    animation: floatGlow 25s ease-in-out infinite reverse;
}

body.light-mode::before {
    background: radial-gradient(circle, rgba(79, 70, 229, 0.05) 0%, transparent 70%);
}

body.light-mode::after {
    background: radial-gradient(circle, rgba(0, 217, 255, 0.05) 0%, transparent 70%);
}

@keyframes floatGlow {

    0%,
    100% {
        transform: translate(0, 0);
    }

    33% {
        transform: translate(60px, -40px);
    }

    66% {
        transform: translate(-30px, 50px);
    }
}

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

a:hover {
    color: var(--cyan);
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== HEADER & NAVIGATION ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--bg-glass);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid var(--border);
    transition: background 0.3s ease, border 0.3s ease, backdrop-filter 0.3s ease;
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    padding: 0 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.logo-icon {
    width: 34px;
    height: 34px;
    background: linear-gradient(135deg, var(--accent), var(--purple));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

.logo span {
    color: var(--accent);
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 8px;
}

.main-nav a {
    padding: 6px 14px;
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
}

.main-nav a:hover {
    color: var(--text-primary);
}

.main-nav a.active {
    color: var(--accent);
    position: relative;
}

.main-nav a.active::after {
    content: '';
    position: absolute;
    bottom: -22px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent);
    box-shadow: 0 0 10px var(--accent);
}

.theme-toggle {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-primary);
    width: 42px;
    height: 42px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.25rem;
    transition: all var(--transition);
    margin-left: 12px;
    box-shadow: var(--shadow-sm);
}

.theme-toggle:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 8px;
}

/* ===== HERO SECTION ===== */
.hero {
    padding: 80px 24px 40px;
    text-align: center;
}

.hero h1 {
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    font-weight: 800;
    letter-spacing: -1.5px;
    line-height: 1.1;
    margin-bottom: 16px;
}

.hero h1 .gradient-text {
    background: linear-gradient(135deg, var(--accent), var(--cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 32px;
    line-height: 1.6;
}

/* ===== CATEGORY TABS ===== */
.cat-tabs {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin: 32px 0 48px;
}

.cat-tab {
    padding: 8px 20px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.cat-tab:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.cat-tab.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #FFFFFF;
    box-shadow: 0 4px 15px var(--accent-glow);
}

/* ===== TOOL GRID & CARDS ===== */
.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.tool-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 32px;
    transition: var(--transition);
    text-decoration: none;
    display: flex;
    flex-direction: column;
}

.tool-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--accent);
}

.tool-card-icon {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 24px;
}

.tool-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.tool-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 24px;
    flex: 1;
}

.tool-card-link {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent);
    display: flex;
    align-items: center;
    gap: 4px;
}

/* ===== TOOL PAGE LAYOUT ===== */
.tool-page {
    padding: 32px 0 80px;
}

.tool-page-grid {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 32px;
    align-items: start;
}

.tool-main {}

.tool-sidebar {}

.tool-widget {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    margin-bottom: 24px;
}

.tool-widget h1 {
    font-size: 1.6rem;
    font-weight: 800;
    margin-bottom: 6px;
    letter-spacing: -0.5px;
}

.tool-widget .tool-subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 28px;
}

/* Form elements */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-row {
    display: flex;
    gap: 16px;
}

.form-row .form-group {
    flex: 1;
}

input[type="text"],
input[type="number"],
input[type="date"],
input[type="email"],
select,
textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-xs);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    outline: none;
    transition: all var(--transition);
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

textarea {
    resize: vertical;
    min-height: 120px;
}

select {
    cursor: pointer;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-xs);
    font-size: 0.95rem;
    font-weight: 600;
    font-family: inherit;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), #8B7FFF);
    color: #fff;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--accent-glow);
}

.btn-secondary {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-primary);
}

.btn-secondary:hover {
    border-color: var(--border-hover);
}

.btn-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* ===== SEARCH INTERFACE ===== */
.search-wrap {
    max-width: 560px;
    margin: 0 auto;
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    transition: var(--transition);
}

.search-wrap:focus-within {
    border-color: var(--accent);
    background: var(--bg-card-hover);
    box-shadow: 0 0 15px var(--accent-glow);
}

.search-wrap input {
    width: 100%;
    padding: 18px 24px 18px 64px;
    /* Sufficient padding for the icon */
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
}

.search-wrap .search-icon {
    position: absolute;
    left: 24px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 1.25rem;
    pointer-events: none;
}

/* Results */
.result-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 24px;
    margin-top: 24px;
}

.result-box h3 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.result-item:last-child {
    border-bottom: none;
}

.result-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.result-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--cyan);
}

.result-value.big {
    font-size: 1.8rem;
}

/* Copy button */
.copy-btn {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 6px 14px;
    border-radius: var(--radius-xs);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    font-family: inherit;
}

.copy-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.copy-btn.copied {
    background: var(--green);
    border-color: var(--green);
    color: #fff;
}

/* ===== SIDEBAR WIDGETS ===== */
.sidebar-widget {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    margin-bottom: 24px;
}

.sidebar-widget h3 {
    font-size: 1.1rem;
    font-weight: 800;
    margin-bottom: 24px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
    border: none;
}

.sidebar-tool-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
    margin-bottom: 4px;
}

.sidebar-tool-link:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    transform: translateX(4px);
}

.sidebar-tool-link .stl-icon {
    font-size: 1.2rem;
}

/* Ad placeholder */
.ad-slot {
    background: var(--bg-card);
    border: 1px dashed var(--border);
    border-radius: var(--radius-sm);
    padding: 40px 20px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-bottom: 20px;
}

/* ===== CONTENT SECTION ===== */
.content-section {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    margin-top: 24px;
}

.content-section h2 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.content-section p {
    color: var(--text-secondary);
    margin-bottom: 14px;
    font-size: 0.92rem;
}

.content-section ul,
.content-section ol {
    color: var(--text-secondary);
    padding-left: 20px;
    margin-bottom: 14px;
}

.content-section li {
    margin-bottom: 6px;
    font-size: 0.92rem;
}

/* ===== STATS BAR ===== */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    margin: 100px 0;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 48px 32px;
    text-align: center;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-8px);
    background: var(--bg-card-hover);
    border-color: var(--accent);
}

.stat-number {
    font-size: 3rem;
    font-weight: 950;
    letter-spacing: -2px;
    background: linear-gradient(135deg, var(--accent), var(--cyan), var(--purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-top: 8px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Advertisement Slot */
.ad-slot {
    background: var(--bg-card);
    border: 1px dashed var(--border);
    border-radius: var(--radius);
    padding: 60px 20px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    margin: 40px 0;
    position: relative;
    overflow: hidden;
}
.ad-slot::before {
    content: 'Advertisement';
    position: absolute;
    top: 10px; left: 50%;
    transform: translateX(-50%);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    opacity: 0.5;
}

/* ===== FOOTER ===== */
.site-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 100px 0 40px;
    margin-top: 100px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 64px;
    margin-bottom: 80px;
}

.footer-brand p {
    color: var(--text-secondary);
    margin-top: 24px;
    line-height: 1.7;
    max-width: 340px;
    font-size: 1rem;
}

.footer-col h4 {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 28px;
    text-transform: none;
    letter-spacing: 0;
}

.footer-col a {
    display: block;
    color: var(--text-secondary);
    margin-bottom: 14px;
    font-size: 0.95rem;
    padding: 0;
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--accent);
    transform: translateX(4px);
}

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ===== BREADCRUMB ===== */
.breadcrumb ol {
    display: flex;
    gap: 12px;
    align-items: center;
    list-style: none;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 32px;
}

.breadcrumb li {
    display: flex;
    align-items: center;
    gap: 12px;
}

.breadcrumb li:not(:last-child)::after {
    content: '/';
    color: var(--text-muted);
    opacity: 0.4;
    font-weight: 400;
}

.breadcrumb a {
    color: var(--text-muted);
    transition: var(--transition);
}

.breadcrumb a:hover {
    color: var(--accent);
}

.breadcrumb li:last-child span {
    color: var(--text-primary);
}

/* ===== PAGE CONTENT ===== */
.page-hero {
    padding: 60px 0 40px;
    text-align: center;
}

.page-hero h1 {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 12px;
}

.page-hero p {
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.page-content {
    max-width: 800px;
    margin: 0 auto;
    padding-bottom: 60px;
}

.page-content h2 {
    font-size: 1.3rem;
    margin: 32px 0 12px;
    font-weight: 700;
}

.page-content p {
    color: var(--text-secondary);
    margin-bottom: 14px;
    font-size: 0.93rem;
}

.page-content ul {
    padding-left: 20px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.page-content li {
    margin-bottom: 8px;
    font-size: 0.93rem;
}

/* Contact form */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .tool-page-grid {
        grid-template-columns: 1fr;
    }

    .tool-sidebar {
        order: 2;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .main-nav {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        border-bottom: 1px solid var(--border);
        flex-direction: column;
        padding: 16px;
    }

    .main-nav.open {
        display: flex;
    }

    .mobile-toggle {
        display: block;
    }

    .hero {
        padding: 50px 0 40px;
    }

    .stats-bar {
        grid-template-columns: repeat(2, 1fr);
    }

    .tool-grid {
        grid-template-columns: 1fr;
    }

    .form-row {
        flex-direction: column;
        gap: 0;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
}

/* ===== CATEGORY BADGE ===== */
.cat-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-muted);
}

/* ===== ANIMATIONS ===== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
}

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

.tool-card:nth-child(1) {
    animation-delay: 0.05s;
}

.tool-card:nth-child(2) {
    animation-delay: 0.1s;
}

.tool-card:nth-child(3) {
    animation-delay: 0.15s;
}

.tool-card:nth-child(4) {
    animation-delay: 0.2s;
}

.tool-card:nth-child(5) {
    animation-delay: 0.25s;
}

/* Toggle buttons for tools */
.toggle-group {
    display: flex;
    gap: 0;
}

.toggle-btn {
    padding: 10px 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
    transition: all var(--transition);
}

.toggle-btn:first-child {
    border-radius: var(--radius-xs) 0 0 var(--radius-xs);
}

.toggle-btn:last-child {
    border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
}

.toggle-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

/* Range input */
input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    outline: none;
    margin: 10px 0;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: var(--accent);
    border-radius: 50%;
    cursor: pointer;
}

/* Output box for text tools */
.output-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-xs);
    padding: 16px;
    min-height: 120px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    color: var(--text-primary);
    white-space: pre-wrap;
    word-break: break-all;
    position: relative;
}

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

.output-header h3 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Color preview */
.color-preview {
    width: 100%;
    height: 80px;
    border-radius: var(--radius-xs);
    border: 1px solid var(--border);
    margin-bottom: 16px;
}

/* BMI gauge */
.bmi-gauge {
    height: 12px;
    border-radius: 6px;
    background: linear-gradient(90deg, var(--cyan), var(--green), var(--yellow), #FF6B35, var(--red));
    position: relative;
    margin: 20px 0 8px;
}

.bmi-marker {
    width: 4px;
    height: 20px;
    background: #fff;
    border-radius: 2px;
    position: absolute;
    top: -4px;
    transition: left var(--transition);
}

.bmi-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.7rem;
    color: var(--text-muted);
}