:root {
        --accent: #25d366;
        --accent-hover: #20bd5a;
        --green: #25d366;
        --font-display: 'ClashDisplay', 'DM Sans', sans-serif;
        --font-body: 'DM Sans', sans-serif;
        --bg: #1e2025;
        --surface: #26282f;
        --surface2: #2e3038;
        --border: #3a3d47;
        --text: #e8eaf0;
        --muted: #9399a8;
        --header-bg: rgba(30,32,37,0.94);
        --card-shadow: 0 4px 24px rgba(0,0,0,0.2);
        --input-bg: #22242b;
    }
    [data-theme="light"] {
        --bg: #f4f7fb;
        --surface: #ffffff;
        --surface2: #eef2f7;
        --border: #d0dae8;
        --text: #0d1117;
        --muted: #1e2a38;
        --header-bg: rgba(244,247,251,0.95);
        --card-shadow: 0 4px 24px rgba(0,0,0,0.08);
        --input-bg: #f8fafc;
        --accent: #0043CE;
        --accent-hover: #0053ff;
        --green: #0043CE;
    }

    * { margin: 0; padding: 0; box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body { font-family: var(--font-body); background: var(--bg); color: var(--text); line-height: 1.7; display: flex; flex-direction: column; min-height: 100vh; }
    a { color: var(--accent); text-decoration: none; }
    a:hover { color: var(--accent-hover); }
    .container { width: 92%; max-width: 1100px; margin: 0 auto; }

    /* NAVBAR */
    header { background: var(--header-bg); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 1000; }
    .navbar { display: flex; justify-content: space-between; align-items: center; padding: 15px 0; gap: 12px; }
    .logo { font-family: var(--font-display); font-weight: 800; font-size: 22px; color: var(--text); letter-spacing: -0.5px; flex-shrink: 0; text-decoration: none; }
    .logo span { color: var(--accent); }
    .nav-right { display: flex; align-items: center; gap: 10px; }
    .nav-links { list-style: none; display: flex; gap: 22px; align-items: center; }
    .nav-links a { color: var(--text); font-weight: 500; font-size: 15px; transition: color 0.2s; }
    .nav-links a:hover { color: var(--accent); }

    .theme-toggle { background: var(--surface2); border: 1px solid var(--border); border-radius: 8px; width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; cursor: pointer; font-size: 16px; transition: 0.2s; flex-shrink: 0; }
    .theme-toggle:hover { border-color: var(--accent); }

    .hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; padding: 4px; flex-shrink: 0; }
    .hamburger span { display: block; width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: 0.3s; }
    .hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
    .hamburger.open span:nth-child(2) { opacity: 0; }
    .hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

    .mobile-nav { display: none; flex-direction: column; background: var(--surface); border-bottom: 1px solid var(--border); }
    .mobile-nav.open { display: flex; }
    .mobile-nav a { color: var(--text); font-weight: 500; font-size: 16px; padding: 14px 4%; border-bottom: 1px solid var(--border); transition: color 0.2s, background 0.2s; }
    .mobile-nav a:last-child { border-bottom: none; }
    .mobile-nav a:hover { color: var(--accent); background: var(--surface2); }

    @media (max-width: 900px) { .nav-links { display: none; } .hamburger { display: flex; } }

    /* HERO */
    #hero {
        display: flex; flex-direction: column; align-items: center; justify-content: center;
        padding: 48px 1.5rem 8px; position: relative; overflow: hidden; text-align:center;
    }
    #hero::before {
        content: ''; position: absolute; top: -100px; right: -100px; width: 500px; height: 500px;
        background: radial-gradient(circle, rgba(37,211,102,0.05) 0%, transparent 70%); pointer-events: none;
    }
    .section-label { font-size: 11px; font-weight: 600; color: var(--accent); text-transform: uppercase; letter-spacing: 2px; margin-bottom: 8px; text-align: center; }
    .entry-title { font-family: var(--font-display); font-size: clamp(2rem, 6vw, 3.6rem); font-weight: 800; line-height: 1.1; text-align: center; color: var(--text); letter-spacing: -1.5px; margin-bottom: 12px; }
    .entry-title span { color: var(--accent); }
    .entry-sub { font-size: 15px; color: var(--text); opacity: 0.65; text-align: center; max-width: 480px; line-height: 1.8; margin: 0 auto 36px; }

    main { flex: 1; padding-bottom: 80px; }

    /* PANEL */
    .panel { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 26px 28px; margin-bottom: 20px; box-shadow: var(--card-shadow); }
    .panel-label { font-size: 11px; font-weight: 600; color: var(--accent); text-transform: uppercase; letter-spacing: 2px; margin-bottom: 6px; }
    .panel-title { font-family: var(--font-display); font-size: 1.3rem; font-weight: 700; margin-bottom: 18px; letter-spacing: -0.3px; }

    /* FORM */
    .field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px 20px; }
    .field { display: flex; flex-direction: column; }
    .field label { font-size: 11px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px; }
    .field input[type="number"] {
        width: 100%; background: var(--input-bg); border: 1px solid var(--border); color: var(--text);
        font-family: var(--font-body); font-size: 14.5px; padding: 10px 13px; border-radius: 8px; outline: none;
        transition: border-color 0.2s, box-shadow 0.2s; font-variant-numeric: tabular-nums;
    }
    .field input[type="number"]:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(37,211,102,0.1); }
    [data-theme="light"] .field input[type="number"]:focus { box-shadow: 0 0 0 3px rgba(0,67,206,0.1); }
    .field input[type="text"] {
        width: 100%; background: var(--input-bg); border: 1px solid var(--border); color: var(--text);
        font-family: var(--font-body); font-size: 14.5px; padding: 10px 13px; border-radius: 8px; outline: none;
        transition: border-color 0.2s, box-shadow 0.2s; font-variant-numeric: tabular-nums;
    }
    .field input[type="text"]:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(37,211,102,0.1); }
    [data-theme="light"] .field input[type="text"]:focus { box-shadow: 0 0 0 3px rgba(0,67,206,0.1); }
    .amount-words { font-size: 11.5px; color: var(--accent); margin-top: 6px; min-height: 14px; font-style: italic; }
    .subsection-title { grid-column: 1 / -1; font-size: 11px; font-weight: 700; color: var(--accent); text-transform: uppercase; letter-spacing: 1.6px; margin-top: 10px; padding-top: 14px; border-top: 1px solid var(--border); }
    .helper-note { grid-column: 1 / -1; font-size: 12px; color: var(--muted); margin-top: -6px; line-height: 1.55; }


    .adv-link { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; font-weight: 600; color: var(--accent); text-transform: uppercase; letter-spacing: 1px; cursor: pointer; margin: 6px 0 4px; user-select: none; background:none; border:none; font-family: var(--font-body); padding:0; }
    .adv-link .car { transition: transform 0.2s; display:inline-block; }
    .adv-link.open .car { transform: rotate(90deg); }
    #advFields { display: none; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 18px 20px; margin-top: 6px; }
    #advFields.show { display: grid; }

    .btn-start { width: 100%; margin-top: 22px; background: var(--accent); color: #000; border: none; font-family: var(--font-body); font-size: 15px; font-weight: 700; padding: 13px; border-radius: 8px; cursor: pointer; transition: background 0.2s, transform 0.15s; }
    .btn-start:hover { background: var(--accent-hover); transform: translateY(-1px); }
    .btn-start:active { transform: translateY(0); }
    [data-theme="light"] .btn-start { color: #fff; }

    /* HEADLINE */
    .dash-header { text-align: center; padding: 8px 0 0; margin-bottom: 8px; }
    .age-display { font-family: var(--font-display); font-size: clamp(1.6rem, 4.4vw, 2.7rem); font-weight: 800; color: var(--text); letter-spacing: -1px; line-height: 1.2; margin: 8px 0 6px; font-variant-numeric: tabular-nums; }
    .age-display .accent { color: var(--accent); }
    .age-display .warn { color: #e05252; }
    .since { font-size: 13px; color: var(--muted); letter-spacing: 0.05em; font-weight: 400; }

    .real-toggle {
        margin-top: 14px; background: var(--surface2); border: 1px solid var(--border); color: var(--muted);
        font-family: var(--font-body); font-size: 12px; font-weight: 600; padding: 7px 16px; border-radius: 99px;
        cursor: pointer; transition: 0.2s; display: inline-flex; align-items: center; gap: 6px;
    }
    .real-toggle::before { content: '↺'; font-size: 13px; }
    .real-toggle:hover { border-color: var(--accent); }
    .real-toggle.on { background: rgba(37,211,102,0.12); border-color: var(--accent); color: var(--accent); }

    /* FIRE Journey stepper */
    .journey { display: flex; justify-content: space-between; position: relative; padding: 36px 6px 6px; }
    .journey-track { position: absolute; top: 49px; left: 6%; right: 6%; height: 2px; background: var(--border); z-index: 0; }
    .journey-stop { flex: 1; text-align: center; position: relative; z-index: 1; }
    .journey-stop .dot { width: 16px; height: 16px; border-radius: 50%; background: var(--surface); border: 2.5px solid var(--border); margin: 0 auto 10px; transition: 0.3s; }
    .journey-stop .dot.reached { background: var(--accent); border-color: var(--accent); box-shadow: 0 0 0 4px rgba(37,211,102,0.15); }
    .journey-stop .stop-name { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); margin-bottom: 4px; }
    .journey-stop .stop-age { font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; }
    .journey-stop .stop-mult { font-size: 10.5px; color: var(--muted); opacity: 0.8; }
    .coast-box { margin-top: 24px; padding: 16px 20px; background: var(--surface2); border-radius: 10px; border: 1px solid var(--border); display: flex; align-items: center; gap: 14px; }
    .coast-box .ci { font-size: 22px; flex-shrink: 0; }
    .coast-box .ct { font-size: 13px; color: var(--text); line-height: 1.6; }
    .coast-box .ct strong { color: var(--accent); }
    @media (max-width: 600px) { .journey { flex-wrap: wrap; gap: 16px 0; } .journey-track { display: none; } .journey-stop { flex: 0 0 50%; } }

    /* What-if table */
    .whatif-table th:nth-child(2), .whatif-table th:nth-child(3),
    .whatif-table td:nth-child(2), .whatif-table td:nth-child(3) { text-align: right; }
    .whatif-table td:first-child { text-align: left; }

    /* Progress bar */
    .bar-row { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 12px; }
    .bar-label { font-size: 11px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; }
    .bar-pct { font-family: var(--font-display); font-size: 1.1rem; font-weight: 700; color: var(--accent); }
    .track { height: 6px; background: var(--surface2); border-radius: 99px; overflow: hidden; border: 1px solid var(--border); }
    .fill { height: 100%; background: linear-gradient(to right, var(--accent), #b8f0d0); border-radius: 99px; width: 0; transition: width 1.2s cubic-bezier(0.16, 1, 0.3, 1); }
    .ticks { display: flex; justify-content: space-between; margin-top: 8px; }
    .tick { font-size: 10px; color: var(--muted); letter-spacing: 0.05em; }

    /* Cards grid */
    .cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 16px; margin-bottom: 20px; }
    .card { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 22px 24px; box-shadow: var(--card-shadow); transition: border-color 0.25s, transform 0.25s; position: relative; overflow: hidden; }
    .card::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 3px; background: var(--card-accent, var(--accent)); transform: scaleX(0); transform-origin: left; transition: transform 0.35s ease; border-radius: 0 0 14px 14px; }
    .card:hover { border-color: var(--accent); transform: translateY(-3px); }
    .card:hover::after { transform: scaleX(1); }

    .card-age      { --card-accent: #5a9fc8; }
    .card-fiage    { --card-accent: #25d366; }
    .card-years    { --card-accent: #8b6fc4; }
    .card-firenum  { --card-accent: #e8a838; }
    .card-invest   { --card-accent: #c07850; }
    .card-progress { --card-accent: #2fb8a6; }
    .card-sustain  { --card-accent: #e05252; }
    .card-networth { --card-accent: #7080c0; }
    .card-savings  { --card-accent: #d46a9c; }

    @keyframes floatUp { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-5px)} }
    @keyframes sunSpin { from{transform:rotate(0deg)} to{transform:rotate(360deg)} }
    @keyframes flicker { 0%,100%{transform:scale(1) rotate(0deg)} 50%{transform:scale(1.12) rotate(-4deg)} }
    .card-icon { font-size: 26px; margin-bottom: 12px; display: inline-block; color: var(--card-accent); }
    .card-fiage .card-icon { animation: floatUp 3s ease-in-out infinite; }
    .card-years .card-icon { animation: sunSpin 7s linear infinite; }
    .card-firenum .card-icon { animation: flicker 1.6s ease-in-out infinite; }
    .card-label { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 1.5px; color: var(--muted); margin-bottom: 6px; }
    .card-value { font-family: var(--font-display); font-size: clamp(1.2rem, 2.4vw, 1.7rem); font-weight: 800; color: var(--text); line-height: 1.15; font-variant-numeric: tabular-nums; word-break: break-word; letter-spacing: -0.5px; margin: 6px 0; }
    .card-sub { font-size: 12px; color: var(--text); opacity: 0.6; margin-top: 8px; line-height: 1.6; }
    .card-sub strong { color: var(--text); font-weight: 600; }
    .card-sub.ok { color: var(--accent); opacity: 1; font-weight: 600; }
    .card-sub.warn { color: #e05252; opacity: 1; font-weight: 600; }

    /* Quote */
    .quote-card { background: linear-gradient(135deg, rgba(37,211,102,0.06), rgba(37,211,102,0.02)); border: 1px solid rgba(37,211,102,0.15); border-radius: 14px; padding: 26px 30px; text-align: center; margin-bottom: 24px; }
    [data-theme="light"] .quote-card { background: linear-gradient(135deg, rgba(0,67,206,0.05), rgba(0,67,206,0.01)); border-color: rgba(0,67,206,0.12); }
    .quote-text { font-size: clamp(0.9rem, 2vw, 1.05rem); color: var(--muted); line-height: 1.8; font-style: italic; }
    .quote-text em { color: var(--accent); font-style: normal; font-weight: 700; }
    .quote-card.warn { background: linear-gradient(135deg, rgba(224,82,82,0.08), rgba(224,82,82,0.02)); border-color: rgba(224,82,82,0.2); }
    .quote-card.warn .quote-text em { color: #e05252; }

    /* Donut */
    .donut-wrap { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
    .donut-canvas-box { width: 140px; height: 140px; position: relative; flex-shrink: 0; }
    .donut-canvas-box .center-label { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; pointer-events: none; }
    .donut-canvas-box .center-label b { font-family: var(--font-display); font-size: 19px; color: var(--text); }
    .donut-canvas-box .center-label span { font-size: 9px; color: var(--muted); letter-spacing: 0.08em; text-transform: uppercase; }
    .legend-mini { font-size: 13px; }
    .legend-mini div { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; color: var(--text); }
    .legend-mini .sw { width: 10px; height: 10px; border-radius: 2px; display: inline-block; flex-shrink: 0; }

    .chart-box { height: 320px; position: relative; }

    /* Table */
    .table-scroll { max-height: 420px; overflow-y: auto; border: 1px solid var(--border); border-radius: 10px; }
    table { width: 100%; border-collapse: collapse; font-size: 13px; font-variant-numeric: tabular-nums; }
    thead th { position: sticky; top: 0; background: var(--surface2); text-align: right; padding: 12px 16px; font-weight: 600; font-size: 10.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); border-bottom: 1.5px solid var(--accent); z-index: 2; }
    thead th:first-child, tbody td:first-child { text-align: left; }
    tbody td { padding: 10px 16px; text-align: right; border-bottom: 1px solid var(--border); color: var(--text); }
    tbody tr:nth-child(even) { background: var(--surface2); }
    tbody tr.fi-row { background: rgba(37,211,102,0.12) !important; }
    tbody tr.fi-row td { font-weight: 700; }
    tbody tr.depleted-row { background: rgba(224,82,82,0.12) !important; }
    tbody tr.depleted-row td { font-weight: 700; }
    .neg { color: #e05252; }
    .pos { color: var(--accent); }
    .phase-tag { font-size: 10.5px; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; padding: 2px 7px; border-radius: 5px; }
    .phase-saving { background: rgba(37,211,102,0.15); color: var(--accent); }
    .phase-retired { background: rgba(90,159,200,0.18); color: #5a9fc8; }
    .table-scroll::-webkit-scrollbar { width: 8px; }
    .table-scroll::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 4px; }
    .table-scroll::-webkit-scrollbar-track { background: var(--surface2); }

    .btn-reset { display: block; margin: 8px auto 0; background: var(--surface); border: 1px solid var(--border); font-family: var(--font-body); font-size: 13px; font-weight: 500; color: var(--muted); cursor: pointer; padding: 10px 24px; border-radius: 8px; transition: border-color 0.2s, color 0.2s; }
    .btn-reset:hover { border-color: var(--accent); color: var(--accent); }

    footer { border-top: 1px solid var(--border); padding: 24px 0; text-align: center; color: var(--muted); background: var(--bg); font-size: 13px; }

    .back-to-top { position: fixed; bottom: 24px; right: 22px; width: 50px; height: 50px; background: var(--surface); border: 1px solid var(--border); border-radius: 50%; display: flex; align-items: center; justify-content: center; cursor: pointer; z-index: 998; transition: 0.25s; opacity: 0; pointer-events: none; color: var(--accent); font-size: 20px; text-decoration: none; font-weight: 700; }
    .back-to-top.visible { opacity: 1; pointer-events: auto; }
    .back-to-top:hover { border-color: var(--accent); background: var(--surface2); transform: translateY(-2px); color: var(--accent); }

    @keyframes up { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }
    .anim { opacity: 0; animation: up 0.6s ease forwards; }
    .anim-1 { animation-delay: 0.05s; }
    .anim-2 { animation-delay: 0.15s; }
    .anim-3 { animation-delay: 0.25s; }
    .anim-4 { animation-delay: 0.35s; }

    @media (max-width: 768px) { .cards { grid-template-columns: 1fr 1fr; } .panel { padding: 20px; } }
    @media (max-width: 480px) { .cards { grid-template-columns: 1fr 1fr; } .field-grid, #advFields.show { grid-template-columns: 1fr; } .donut-wrap { flex-direction: column; align-items: flex-start; } }

/* Utility classes moved from inline styles during refactor */
.panel-progress { margin-top: 24px; }
.cards-tight { margin-bottom: 0; }
.input-warnings { display: none; color: #e05252; text-align: center; margin: 10px 0; }
.footer-disclaimer { margin-top: 6px; font-size: 11.5px; opacity: 0.75; }
.hidden-dot { display: none; }