/* ── Reset & Base ── */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    :root {
      --navy:    #0d2340;
      --blue:    #1a4a7a;
      --teal:    #0e8c8c;
      --accent:  #f5a623;
      --light:   #f4f7fb;
      --border:  #d8e3ef;
      --text:    #1c2b3a;
      --muted:   #6b7e95;
      --white:   #ffffff;
      --green:   #1a9e6f;
      --red:     #d94040;
      --radius:  10px;
      --shadow:  0 4px 24px rgba(13,35,64,.10);
    }
    html { scroll-behavior: smooth; }
    body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif; background: var(--light); color: var(--text); font-size: 16px; line-height: 1.6; }
    a { color: var(--teal); text-decoration: none; }
    a:hover { text-decoration: underline; }

    /* ── Header ── */
    header {
      background: var(--navy);
      padding: 0 24px;
      position: sticky; top: 0; z-index: 100;
      box-shadow: 0 2px 8px rgba(0,0,0,.25);
    }
    .header-inner {
      max-width: 1200px; margin: 0 auto;
      display: flex; align-items: center; justify-content: space-between;
      height: 60px;
    }
    .logo { display: flex; align-items: center; gap: 10px; color: var(--white); font-size: 1.3rem; font-weight: 700; letter-spacing: -.5px; }
    .logo-icon { width: 34px; height: 34px; background: var(--teal); border-radius: 8px; display:flex;align-items:center;justify-content:center; font-size:18px; }
    nav { display: flex; gap: 4px; }
    nav a {
      color: rgba(255,255,255,.75); font-size: .875rem; font-weight: 500;
      padding: 6px 14px; border-radius: 6px; transition: background .2s, color .2s;
    }
    nav a:hover, nav a.active { background: rgba(255,255,255,.12); color: var(--white); text-decoration: none; }

    /* ── Hero Banner ── */
    .hero {
      background: linear-gradient(135deg, var(--navy) 0%, var(--blue) 100%);
      color: var(--white); text-align: center; padding: 48px 24px 40px;
    }
    .hero h1 { font-size: clamp(1.6rem, 4vw, 2.4rem); font-weight: 800; line-height: 1.2; margin-bottom: 10px; }
    .hero p { color: rgba(255,255,255,.78); font-size: 1.05rem; max-width: 580px; margin: 0 auto; }

    /* ── Ad Slot Styles ── */
    .ad-slot {
      background: #e8f0fb;
      border: 2px dashed #aabdd8;
      border-radius: var(--radius);
      display: flex; align-items: center; justify-content: center;
      color: #7a93af; font-size: .8rem; font-weight: 600;
      text-transform: uppercase; letter-spacing: .5px;
    }
    /* ══ TEMPORARY: ad slots hidden until AdSense approval ══
       Delete this rule (or comment it out) once ads are live to
       bring the placeholder boxes back / start showing real ads. */
    .ad-slot { display: none !important; }
    .ad-leaderboard { width: 100%; height: 90px; margin: 18px 0; }
    .ad-sidebar { width: 100%; height: 250px; margin-bottom: 20px; }
    .ad-in-content { width: 100%; height: 120px; margin: 28px 0; }

    /* ── Page Layout ── */
    .page-wrap { max-width: 1200px; margin: 0 auto; padding: 28px 16px 60px; }
    .content-grid { display: grid; grid-template-columns: 1fr 300px; gap: 28px; align-items: start; }
    @media (max-width: 860px) { .content-grid { grid-template-columns: 1fr; } nav { display: none; } }

    /* ── Tool Tabs ── */
    .tool-tabs {
      display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 22px;
    }
    .tool-tab {
      padding: 9px 18px; border-radius: 24px; font-size: .875rem; font-weight: 600;
      cursor: pointer; border: 2px solid var(--border); background: var(--white);
      color: var(--muted); transition: all .2s;
    }
    .tool-tab:hover { border-color: var(--teal); color: var(--teal); }
    .tool-tab.active { background: var(--teal); border-color: var(--teal); color: var(--white); }

    /* ── Calculator Card ── */
    .calc-card {
      background: var(--white); border-radius: 14px; box-shadow: var(--shadow);
      overflow: hidden;
    }
    .calc-card-header {
      background: var(--teal); padding: 18px 24px;
      display: flex; align-items: center; gap: 12px;
    }
    .calc-card-header .icon { font-size: 1.5rem; }
    .calc-card-header h2 { color: var(--white); font-size: 1.2rem; font-weight: 700; }
    .calc-card-header p { color: rgba(255,255,255,.8); font-size: .85rem; }
    .calc-body { padding: 24px; }

    /* ── Form Controls ── */
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    @media (max-width: 540px) { .form-grid { grid-template-columns: 1fr; } }
    .form-group { display: flex; flex-direction: column; gap: 6px; }
    .form-group.full { grid-column: 1 / -1; }
    label { font-size: .85rem; font-weight: 600; color: var(--navy); }
    .hint { font-size: .78rem; color: var(--muted); margin-top: -4px; }
    input[type="number"], select {
      width: 100%; padding: 10px 14px; border: 1.5px solid var(--border); border-radius: 8px;
      font-size: 1rem; color: var(--text); background: var(--white);
      transition: border-color .2s, box-shadow .2s; appearance: none;
    }
    input[type="number"]:focus, select:focus { outline: none; border-color: var(--teal); box-shadow: 0 0 0 3px rgba(14,140,140,.15); }
    .input-prefix { position: relative; }
    .input-prefix span { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--muted); font-weight: 600; pointer-events: none; }
    .input-prefix input { padding-left: 26px; }
    .input-suffix { position: relative; }
    .input-suffix span { position: absolute; right: 12px; top: 50%; transform: translateY(-50%); color: var(--muted); font-weight: 600; pointer-events: none; }
    .input-suffix input { padding-right: 30px; }
    .section-divider { grid-column: 1/-1; border: none; border-top: 1.5px dashed var(--border); margin: 4px 0; }
    .section-label { grid-column: 1/-1; font-size: .78rem; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: .8px; }

    /* ── Calculate Button ── */
    .btn-calc {
      width: 100%; margin-top: 20px; padding: 14px; background: var(--teal); color: var(--white);
      border: none; border-radius: 10px; font-size: 1.05rem; font-weight: 700;
      cursor: pointer; transition: background .2s, transform .1s;
    }
    .btn-calc:hover { background: #0a7070; }
    .btn-calc:active { transform: scale(.98); }

    /* ── Results Panel ── */
    .results-panel {
      margin-top: 24px; border-radius: 12px; overflow: hidden;
      border: 1.5px solid var(--border); display: none;
    }
    .results-panel.visible { display: block; animation: fadeUp .3s ease; }
    @keyframes fadeUp { from { opacity:0; transform:translateY(8px); } to { opacity:1; transform:translateY(0); } }
    .results-top {
      background: var(--navy); padding: 20px 24px; text-align: center;
    }
    .results-top .take-home-label { color: rgba(255,255,255,.7); font-size: .85rem; font-weight: 600; text-transform: uppercase; letter-spacing: .5px; margin-bottom: 4px; }
    .results-top .take-home-amount { color: var(--white); font-size: 2.6rem; font-weight: 800; line-height: 1; }
    .results-top .per-period { color: rgba(255,255,255,.65); font-size: .9rem; margin-top: 4px; }
    .results-breakdown { padding: 20px 24px; background: var(--white); }
    .breakdown-row {
      display: flex; justify-content: space-between; align-items: center;
      padding: 9px 0; border-bottom: 1px solid var(--border); font-size: .92rem;
    }
    .breakdown-row:last-child { border-bottom: none; }
    .breakdown-row .label { color: var(--text); }
    .breakdown-row .amount { font-weight: 600; color: var(--navy); }
    .breakdown-row .amount.deduction { color: var(--red); }
    .breakdown-row .amount.takeHome { color: var(--green); font-size: 1.05rem; }
    .breakdown-row.total { background: #f0faf6; margin: 8px -24px -20px; padding: 12px 24px; }
    .period-toggle { display: flex; gap: 6px; margin-bottom: 16px; }
    .period-btn { padding: 5px 12px; border-radius: 20px; font-size: .8rem; font-weight: 600; cursor: pointer; border: 1.5px solid var(--border); background: var(--white); color: var(--muted); transition: all .15s; }
    .period-btn.active { background: var(--navy); border-color: var(--navy); color: var(--white); }
    .tax-bar { margin: 16px 0 0; }
    .tax-bar-label { font-size: .8rem; color: var(--muted); margin-bottom: 6px; font-weight: 600; }
    .bar-track { height: 12px; border-radius: 10px; background: var(--light); overflow: hidden; display: flex; }
    .bar-segment { height: 100%; transition: width .5s ease; }
    .bar-legend { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 10px; }
    .legend-item { display: flex; align-items: center; gap: 5px; font-size: .78rem; color: var(--muted); }
    .legend-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }

    /* ── Sidebar ── */
    .sidebar {}
    .sidebar-card { background: var(--white); border-radius: 14px; box-shadow: var(--shadow); padding: 20px; margin-bottom: 20px; }
    .sidebar-card h3 { font-size: 1rem; font-weight: 700; color: var(--navy); margin-bottom: 14px; padding-bottom: 10px; border-bottom: 1.5px solid var(--border); }
    .quick-fact { display: flex; justify-content: space-between; font-size: .88rem; padding: 6px 0; border-bottom: 1px dashed var(--border); }
    .quick-fact:last-child { border: none; }
    .quick-fact .fact-label { color: var(--muted); }
    .quick-fact .fact-val { font-weight: 700; color: var(--navy); }

    /* ── Related Tools ── */
    .tools-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 14px; margin-top: 10px; }
    .tool-link-card {
      background: var(--white); border-radius: 12px; padding: 16px;
      border: 1.5px solid var(--border); transition: border-color .2s, box-shadow .2s;
      cursor: pointer; display: block;
    }
    .tool-link-card:hover { border-color: var(--teal); box-shadow: 0 4px 16px rgba(14,140,140,.12); text-decoration: none; }
    .tool-link-card .t-icon { font-size: 1.6rem; margin-bottom: 8px; }
    .tool-link-card .t-title { font-size: .95rem; font-weight: 700; color: var(--navy); margin-bottom: 4px; }
    .tool-link-card .t-desc { font-size: .8rem; color: var(--muted); line-height: 1.4; }

    /* ── Info Section ── */
    .info-section { background: var(--white); border-radius: 14px; box-shadow: var(--shadow); padding: 28px; margin-top: 28px; }
    .info-section h2 { font-size: 1.3rem; font-weight: 700; color: var(--navy); margin-bottom: 14px; }
    .info-section h3 { font-size: 1.05rem; font-weight: 700; color: var(--navy); margin: 20px 0 8px; }
    .info-section p { color: var(--muted); font-size: .92rem; line-height: 1.7; margin-bottom: 10px; }
    .tax-table { width: 100%; border-collapse: collapse; font-size: .85rem; margin-top: 10px; }
    .tax-table th { background: var(--navy); color: var(--white); padding: 8px 12px; text-align: left; font-weight: 600; }
    .tax-table td { padding: 8px 12px; border-bottom: 1px solid var(--border); }
    .tax-table tr:nth-child(even) td { background: var(--light); }

    /* ── Footer ── */
    footer { background: var(--navy); color: rgba(255,255,255,.55); text-align: center; font-size: .82rem; padding: 24px 16px; }
    footer a { color: rgba(255,255,255,.7); }
    .footer-links { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; margin-bottom: 10px; }

    /* ── Tool Panels ── */
    .tool-panel { display: none; }
    .tool-panel.active { display: block; }

    /* ── Hourly ↔ Salary ── */
    .conv-result { background: var(--light); border-radius: 10px; padding: 18px 20px; margin-top: 20px; display: none; }
    .conv-result.visible { display: block; animation: fadeUp .3s; }
    .conv-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 12px; margin-top: 12px; }
    .conv-item { background: var(--white); border-radius: 8px; padding: 12px 14px; border: 1.5px solid var(--border); }
    .conv-item .c-label { font-size: .75rem; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .4px; }
    .conv-item .c-val { font-size: 1.2rem; font-weight: 800; color: var(--navy); margin-top: 2px; }

    /* ── Overtime ── */
    .ot-result { background: var(--light); border-radius: 10px; padding: 18px 20px; margin-top: 20px; display: none; }
    .ot-result.visible { display: block; animation: fadeUp .3s; }
    .ot-row { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--border); font-size: .93rem; }
    .ot-row:last-child { border: none; font-weight: 700; font-size: 1rem; }

    /* ── Raise ── */
    .raise-result { background: var(--light); border-radius: 10px; padding: 18px 20px; margin-top: 20px; display: none; }
    .raise-result.visible { display: block; animation: fadeUp .3s; }
    .raise-big { text-align: center; padding: 16px 0; }
    .raise-big .rb-label { font-size: .85rem; color: var(--muted); font-weight: 600; }
    .raise-big .rb-val { font-size: 2rem; font-weight: 800; color: var(--green); }