/* ============================
   FinCalc Pro - Main Stylesheet
   ============================ */

:root {
    --primary: #1a56db;
    --primary-dark: #1340b0;
    --primary-light: #e8f0fe;
    --secondary: #0ea5e9;
    --accent: #f59e0b;
    --success: #10b981;
    --danger: #ef4444;
    --text: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --bg: #f8fafc;
    --white: #ffffff;
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -1px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 25px -5px rgba(0,0,0,0.1), 0 6px 10px -5px rgba(0,0,0,0.04);
    --radius: 12px;
    --radius-sm: 8px;
    --font: 'Plus Jakarta Sans', sans-serif;
    --mono: 'JetBrains Mono', monospace;
}

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

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    font-size: 15px;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ---- Topbar ---- */
.topbar {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    font-size: 12px;
    padding: 6px 0;
}
.topbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.topbar span { display: flex; align-items: center; gap: 6px; opacity: 0.9; }

/* ---- Header ---- */
.site-header {
    background: var(--white);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text);
}
.logo-icon {
    width: 44px; height: 44px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    color: white;
    font-size: 20px;
}
.logo-name { display: block; font-size: 20px; font-weight: 800; color: var(--primary); }
.logo-tagline { display: block; font-size: 11px; color: var(--text-muted); }

/* ---- Navigation ---- */
.main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
}
.main-nav > a, .dropdown-trigger {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 14px;
    color: var(--text);
    transition: all 0.2s;
    cursor: pointer;
    background: none;
    border: none;
}
.main-nav > a:hover, .dropdown-trigger:hover,
.main-nav > a.active { background: var(--primary-light); color: var(--primary); }

.nav-dropdown { position: relative; }
.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    min-width: 220px;
    padding: 8px;
    z-index: 999;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s, transform 0.2s;
    transform: translateY(8px);
}
.nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    pointer-events: all;
    transform: translateY(0);
}
.dropdown-menu a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text);
    transition: background 0.15s;
}
.dropdown-menu a:hover { background: var(--bg); }
.dropdown-menu a i { width: 16px; text-align: center; }

.hamburger { display: none; background: none; border: none; font-size: 22px; cursor: pointer; color: var(--text); }

.mobile-nav {
    display: none;
    flex-direction: column;
    background: var(--white);
    border-top: 1px solid var(--border);
    padding: 8px;
    max-height: 70vh;
    overflow-y: auto;
}
.mobile-nav a {
    padding: 10px 16px;
    color: var(--text);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
}
.mobile-nav a:hover { background: var(--bg); }
.mobile-nav.open { display: flex; }

/* ---- Hero ---- */
.hero {
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #1a56db 100%);
    color: white;
    padding: 70px 0 80px;
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.hero-content { position: relative; text-align: center; }
.hero h1 { font-size: clamp(28px, 5vw, 52px); font-weight: 800; line-height: 1.2; margin-bottom: 16px; }
.hero h1 span { color: var(--accent); }
.hero p { font-size: 18px; opacity: 0.85; margin-bottom: 32px; max-width: 600px; margin-left: auto; margin-right: auto; }
.hero-search {
    max-width: 520px;
    margin: 0 auto 32px;
    display: flex;
    background: white;
    border-radius: 50px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}
.hero-search input {
    flex: 1;
    border: none;
    outline: none;
    padding: 16px 24px;
    font-size: 15px;
    font-family: var(--font);
    color: var(--text);
}
.hero-search button {
    background: var(--accent);
    color: white;
    border: none;
    padding: 16px 28px;
    font-weight: 700;
    cursor: pointer;
    font-size: 15px;
    transition: background 0.2s;
}
.hero-search button:hover { background: #d97706; }
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}
.hero-stat strong { display: block; font-size: 24px; font-weight: 800; color: var(--accent); }
.hero-stat span { font-size: 13px; opacity: 0.7; }

/* ---- Calculator Grid ---- */
.section { padding: 60px 0; }
.section-title { font-size: 28px; font-weight: 800; margin-bottom: 8px; }
.section-subtitle { color: var(--text-muted); margin-bottom: 36px; }

.calc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}
.calc-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px 20px;
    text-align: center;
    transition: all 0.25s;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}
.calc-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--card-color, var(--primary));
    transform: scaleX(0);
    transition: transform 0.25s;
    transform-origin: left;
}
.calc-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}
.calc-card:hover::before { transform: scaleX(1); }
.calc-card .card-icon {
    width: 56px; height: 56px;
    border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 14px;
    font-size: 22px;
    background: var(--card-bg, var(--primary-light));
    color: var(--card-color, var(--primary));
}
.calc-card h3 { font-size: 14px; font-weight: 700; margin-bottom: 6px; }
.calc-card p { font-size: 12px; color: var(--text-muted); line-height: 1.4; }

/* ---- Calculator Page Layout ---- */
.calc-page { padding: 40px 0 60px; }
.calc-page-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    padding: 40px 0;
    margin-bottom: 40px;
}
.calc-page-header h1 { font-size: 32px; font-weight: 800; margin-bottom: 8px; }
.calc-page-header p { opacity: 0.85; font-size: 15px; }
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    margin-bottom: 16px;
    opacity: 0.8;
}
.breadcrumb a { color: white; }
.breadcrumb i { font-size: 10px; }

.calc-layout {
    display: grid;
    grid-template-columns: 420px 1fr;
    gap: 28px;
    align-items: start;
}

.calc-form-card, .calc-result-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}
.calc-form-card .card-head, .calc-result-card .card-head {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 15px;
    background: var(--bg);
}
.calc-form-card .card-head i, .calc-result-card .card-head i {
    color: var(--primary);
    font-size: 16px;
}
.card-body { padding: 24px; }

/* ---- Form Inputs ---- */
.form-group { margin-bottom: 22px; }
.form-group label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.form-group label .label-val {
    font-family: var(--mono);
    font-size: 14px;
    font-weight: 700;
    color: var(--primary);
    background: var(--primary-light);
    padding: 2px 10px;
    border-radius: 20px;
}
.input-with-unit {
    display: flex;
    align-items: center;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: white;
    transition: border-color 0.2s;
}
.input-with-unit:focus-within { border-color: var(--primary); }
.input-unit {
    background: var(--bg);
    padding: 12px 14px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    border-right: 1px solid var(--border);
    white-space: nowrap;
}
.input-with-unit input {
    flex: 1;
    border: none;
    outline: none;
    padding: 12px 14px;
    font-size: 15px;
    font-family: var(--font);
    background: transparent;
    color: var(--text);
}
input[type="range"] {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: linear-gradient(to right, var(--primary) 0%, var(--primary) var(--val, 50%), var(--border) var(--val, 50%));
    outline: none;
    -webkit-appearance: none;
    cursor: pointer;
    margin-top: 8px;
}
input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px; height: 20px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 2px 8px rgba(26,86,219,0.3);
    cursor: pointer;
    transition: transform 0.15s;
}
input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.2); }

.calc-btn {
    width: 100%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    padding: 15px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    font-family: var(--font);
    letter-spacing: 0.5px;
}
.calc-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(26,86,219,0.35);
}
.calc-btn:active { transform: translateY(0); }

/* ---- Result Boxes ---- */
.result-highlight {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border-radius: var(--radius);
    padding: 28px;
    text-align: center;
    margin-bottom: 20px;
}
.result-highlight .result-label { font-size: 13px; opacity: 0.85; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px; }
.result-highlight .result-value { font-size: 38px; font-weight: 800; font-family: var(--mono); }

.result-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 20px;
}
.result-item {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px;
    text-align: center;
}
.result-item .item-label { font-size: 11px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 6px; }
.result-item .item-value { font-size: 18px; font-weight: 700; font-family: var(--mono); color: var(--text); }
.result-item.green .item-value { color: var(--success); }
.result-item.red .item-value { color: var(--danger); }
.result-item.blue .item-value { color: var(--primary); }
.result-item.orange .item-value { color: var(--accent); }

/* Chart */
.chart-wrap { padding: 20px 0; max-height: 280px; display: flex; align-items: center; justify-content: center; }

/* Amortization table */
.amort-table-wrap { overflow-x: auto; max-height: 300px; overflow-y: auto; margin-top: 16px; border: 1px solid var(--border); border-radius: var(--radius-sm); }
.amort-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.amort-table th { background: var(--primary); color: white; padding: 10px 14px; text-align: left; font-size: 12px; font-weight: 600; letter-spacing: 0.5px; position: sticky; top: 0; }
.amort-table td { padding: 9px 14px; border-bottom: 1px solid var(--border); }
.amort-table tr:hover td { background: var(--primary-light); }
.amort-table tr:last-child td { border-bottom: none; }

/* ---- How It Works ---- */
.how-it-works { background: white; border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; margin-top: 24px; }
.how-it-works h3 { font-size: 16px; font-weight: 700; margin-bottom: 16px; color: var(--text); }
.how-steps { display: grid; gap: 14px; }
.how-step { display: flex; gap: 14px; align-items: flex-start; }
.step-num {
    width: 28px; height: 28px; min-width: 28px;
    background: var(--primary); color: white;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 12px; font-weight: 700;
}
.step-text h4 { font-size: 14px; font-weight: 600; margin-bottom: 2px; }
.step-text p { font-size: 13px; color: var(--text-muted); }

/* Tabs */
.result-tabs { display: flex; gap: 4px; margin-bottom: 20px; background: var(--bg); padding: 4px; border-radius: var(--radius-sm); }
.tab-btn {
    flex: 1; padding: 9px; text-align: center; border: none; background: none;
    border-radius: 6px; font-size: 13px; font-weight: 600; cursor: pointer;
    color: var(--text-muted); transition: all 0.2s; font-family: var(--font);
}
.tab-btn.active { background: white; color: var(--primary); box-shadow: var(--shadow); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ---- Home page features ---- */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature-card {
    background: white; border: 1px solid var(--border);
    border-radius: var(--radius); padding: 28px; text-align: center;
}
.feature-icon { font-size: 32px; margin-bottom: 14px; }
.feature-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.feature-card p { font-size: 14px; color: var(--text-muted); }

/* ---- Footer ---- */
.site-footer { background: #0f172a; color: #94a3b8; padding: 60px 0 0; margin-top: 80px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-logo { display: flex; align-items: center; gap: 10px; color: white; font-size: 20px; font-weight: 800; margin-bottom: 14px; }
.footer-logo i { color: var(--accent); font-size: 22px; }
.footer-col p { font-size: 14px; line-height: 1.7; }
.footer-col h4 { color: white; font-size: 14px; font-weight: 700; margin-bottom: 16px; text-transform: uppercase; letter-spacing: 1px; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { color: #94a3b8; font-size: 14px; transition: color 0.2s; }
.footer-col ul li a:hover { color: white; }
.footer-social { display: flex; gap: 10px; margin-top: 16px; }
.footer-social a {
    width: 36px; height: 36px;
    background: rgba(255,255,255,0.08);
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    color: #94a3b8; font-size: 15px; transition: all 0.2s;
}
.footer-social a:hover { background: var(--primary); color: white; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 20px 0;
    display: flex; justify-content: space-between; align-items: center;
    flex-wrap: wrap; gap: 10px;
    font-size: 13px;
}
.footer-links { display: flex; gap: 20px; }
.footer-links a { color: #94a3b8; font-size: 13px; transition: color 0.2s; }
.footer-links a:hover { color: white; }

/* ---- Admin ---- */
.admin-layout { display: flex; min-height: 100vh; }
.admin-sidebar {
    width: 250px; min-width: 250px;
    background: #0f172a; color: white;
    padding: 0;
    display: flex; flex-direction: column;
}
.sidebar-brand {
    padding: 22px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    font-size: 18px; font-weight: 800;
    display: flex; align-items: center; gap: 10px;
    color: white;
}
.sidebar-brand i { color: var(--accent); }
.sidebar-nav { flex: 1; padding: 12px 0; }
.sidebar-nav a {
    display: flex; align-items: center; gap: 12px;
    padding: 11px 20px; color: #94a3b8;
    font-size: 14px; font-weight: 500;
    transition: all 0.2s;
}
.sidebar-nav a:hover, .sidebar-nav a.active { color: white; background: rgba(255,255,255,0.07); }
.sidebar-nav a.active { border-left: 3px solid var(--primary); }
.sidebar-nav a i { width: 18px; text-align: center; }
.sidebar-divider { height: 1px; background: rgba(255,255,255,0.08); margin: 8px 0; }
.admin-content { flex: 1; background: var(--bg); overflow: auto; }
.admin-topbar {
    background: white; border-bottom: 1px solid var(--border);
    padding: 16px 28px;
    display: flex; justify-content: space-between; align-items: center;
    box-shadow: var(--shadow);
}
.admin-topbar h1 { font-size: 18px; font-weight: 700; }
.admin-body { padding: 28px; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 28px; }
.stat-card {
    background: white; border: 1px solid var(--border);
    border-radius: var(--radius); padding: 22px;
    display: flex; align-items: center; gap: 16px;
}
.stat-icon { width: 52px; height: 52px; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 22px; }
.stat-info .stat-num { font-size: 26px; font-weight: 800; }
.stat-info .stat-label { font-size: 13px; color: var(--text-muted); }
.admin-card {
    background: white; border: 1px solid var(--border);
    border-radius: var(--radius); overflow: hidden; margin-bottom: 24px;
}
.admin-card-head {
    padding: 16px 22px; border-bottom: 1px solid var(--border);
    font-weight: 700; font-size: 15px;
    display: flex; justify-content: space-between; align-items: center;
}
.admin-card-body { padding: 22px; }
.admin-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.admin-table th { background: var(--bg); padding: 10px 14px; text-align: left; font-size: 12px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }
.admin-table td { padding: 11px 14px; border-bottom: 1px solid var(--border); }
.admin-table tr:last-child td { border-bottom: none; }
.admin-table tr:hover td { background: var(--bg); }
.badge { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: 11px; font-weight: 700; text-transform: uppercase; }
.badge-green { background: #d1fae5; color: #065f46; }
.badge-blue { background: var(--primary-light); color: var(--primary); }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.admin-form-group { margin-bottom: 18px; }
.admin-form-group label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.4px; }
.admin-form-group input, .admin-form-group textarea, .admin-form-group select {
    width: 100%; border: 2px solid var(--border); border-radius: var(--radius-sm);
    padding: 10px 14px; font-size: 14px; font-family: var(--font);
    outline: none; transition: border-color 0.2s; background: white; color: var(--text);
}
.admin-form-group input:focus, .admin-form-group textarea:focus, .admin-form-group select:focus { border-color: var(--primary); }
.admin-form-group textarea { min-height: 80px; resize: vertical; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 20px; border-radius: var(--radius-sm); font-size: 14px; font-weight: 600; cursor: pointer; border: none; font-family: var(--font); transition: all 0.2s; }
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-danger { background: var(--danger); color: white; }
.btn-success { background: var(--success); color: white; }
.btn-sm { padding: 7px 14px; font-size: 13px; }

.alert { padding: 14px 18px; border-radius: var(--radius-sm); margin-bottom: 16px; font-size: 14px; }
.alert-success { background: #d1fae5; color: #065f46; border: 1px solid #6ee7b7; }
.alert-error { background: #fee2e2; color: #7f1d1d; border: 1px solid #fca5a5; }

/* ---- Utilities ---- */
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.mt-4 { margin-top: 16px; }
.mt-8 { margin-top: 32px; }
.fw-700 { font-weight: 700; }
.hidden { display: none !important; }

/* ---- Responsive ---- */
@media (max-width: 900px) {
    .main-nav { display: none; }
    .hamburger { display: block; }
    .calc-layout { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .features-grid { grid-template-columns: 1fr; }
    .calc-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
}
@media (max-width: 600px) {
    .hero { padding: 50px 0 60px; }
    .footer-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .result-grid { grid-template-columns: 1fr; }
    .admin-layout { flex-direction: column; }
    .admin-sidebar { width: 100%; min-width: unset; }
    .topbar .container { flex-direction: column; gap: 4px; font-size: 11px; }
}

/* ---- Print ---- */
@media print {
    .site-header, .site-footer, .calc-form-card, .topbar { display: none !important; }
    .calc-layout { grid-template-columns: 1fr; }
    .calc-page-header { background: none !important; color: black !important; }
}

/* ---- Loader ---- */
.calc-loading { opacity: 0.5; pointer-events: none; }
.spinner { display: inline-block; width: 18px; height: 18px; border: 2px solid rgba(255,255,255,0.4); border-top-color: white; border-radius: 50%; animation: spin 0.7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- Tooltip ---- */
.tooltip { position: relative; cursor: help; }
.tooltip::after { content: attr(data-tip); position: absolute; bottom: 100%; left: 50%; transform: translateX(-50%); background: #1e293b; color: white; font-size: 12px; padding: 6px 10px; border-radius: 6px; white-space: nowrap; opacity: 0; pointer-events: none; transition: opacity 0.2s; margin-bottom: 6px; }
.tooltip:hover::after { opacity: 1; }

/* Smooth scroll */
html { scroll-behavior: smooth; }