* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      transition: background 0.2s, color 0.2s, border-color 0.2s, box-shadow 0.2s;
    }

    :root {
      --bg-body: #f0f4f8;
      --surface: #ffffff;
      --surface-secondary: #f8fafc;
      --text-primary: #0f172a;
      --text-secondary: #475569;
      --border-light: #e2e8f0;
      --border-hover: #94a3b8;
      --accent: #2c6e2f;
      --accent-hover: #1f5422;
      --accent-soft: #e8f5e9;
      --accent-mid: #4caf50;
      --danger: #b91c1c;
      --danger-soft: #fef2f2;
      --card-shadow: 0 1px 3px rgba(0,0,0,0.06), 0 4px 16px rgba(0,0,0,0.06);
      --card-shadow-hover: 0 4px 12px rgba(0,0,0,0.08), 0 12px 32px rgba(0,0,0,0.1);
      --input-bg: #ffffff;
      --radius-card: 20px;
      --radius-btn: 12px;
      --radius-input: 12px;
      color-scheme: light;
    }

    body.dark {
      --bg-body: #0d1117;
      --surface: #161b22;
      --surface-secondary: #21262d;
      --text-primary: #e6edf3;
      --text-secondary: #8b949e;
      --border-light: #30363d;
      --border-hover: #6e7681;
      --accent: #3fb950;
      --accent-hover: #56d364;
      --accent-soft: #0d2918;
      --accent-mid: #3fb950;
      --danger: #f85149;
      --danger-soft: #2d0f0e;
      --input-bg: #0d1117;
      --card-shadow: 0 1px 3px rgba(0,0,0,0.3), 0 4px 16px rgba(0,0,0,0.3);
      --card-shadow-hover: 0 4px 12px rgba(0,0,0,0.4), 0 12px 32px rgba(0,0,0,0.4);
      color-scheme: dark;
    }

    body {
      font-family: 'Inter', sans-serif;
      background: var(--bg-body);
      color: var(--text-primary);
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }

    /* ── HEADER ── */
    .app-header {
      background: var(--surface);
      border-bottom: 1px solid var(--border-light);
      padding: 0.85rem 2rem;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
      position: sticky;
      top: 0;
      z-index: 100;
      box-shadow: 0 1px 0 var(--border-light), 0 2px 8px rgba(0,0,0,0.04);
    }

    .logo-area {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .logo-icon {
      background: linear-gradient(135deg, var(--accent), var(--accent-mid));
      width: 44px;
      height: 44px;
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      color: white;
      box-shadow: 0 2px 8px rgba(44,110,47,0.35);
    }

    .logo-text h1 {
      font-size: 1.3rem;
      font-weight: 700;
      letter-spacing: -0.02em;
    }

    .logo-text p {
      font-size: 0.72rem;
      color: var(--text-secondary);
      margin-top: 1px;
    }

    .controls {
      display: flex;
      gap: 10px;
      align-items: center;
      flex-wrap: wrap;
    }

    .currency-selector {
      background: var(--surface-secondary);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-btn);
      padding: 7px 14px;
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 500;
      font-size: 0.88rem;
      cursor: pointer;
    }

    .currency-selector:hover {
      border-color: var(--accent);
    }

    .currency-selector select {
      background: var(--surface-secondary);
      border: none;
      font-weight: 600;
      font-size: 0.88rem;
      color: var(--text-primary);
      outline: none;
      cursor: pointer;
      border-radius: 6px;
    }

    .sar-icon {
      width: 16px;
      height: auto;
      vertical-align: middle;
      fill: currentColor;
    }

    .theme-toggle {
      background: var(--surface-secondary);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-btn);
      padding: 7px 14px;
      display: flex;
      gap: 7px;
      cursor: pointer;
      font-weight: 500;
      font-size: 0.88rem;
      align-items: center;
      user-select: none;
    }

    .theme-toggle:hover {
      border-color: var(--accent);
    }

    /* ── LAYOUT ── */
    .container {
      max-width: 960px;
      margin: 2rem auto;
      padding: 0 1.5rem;
      flex: 1;
    }

    /* ── TABS ── */
    .tabs-modern {
      display: flex;
      flex-wrap: wrap;
      gap: 4px;
      margin-bottom: 2rem;
      background: var(--surface);
      border: 1px solid var(--border-light);
      border-radius: 16px;
      padding: 6px;
      box-shadow: var(--card-shadow);
    }

    .tab-btn {
      background: transparent;
      padding: 0.6rem 1.2rem;
      font-size: 0.9rem;
      font-weight: 600;
      border-radius: 10px;
      cursor: pointer;
      color: var(--text-secondary);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      border: none;
      flex: 1;
      justify-content: center;
      min-width: 120px;
      transition: background 0.15s, color 0.15s;
    }

    .tab-btn:hover:not(.active) {
      background: var(--surface-secondary);
      color: var(--text-primary);
    }

    .tab-btn.active {
      background: var(--accent);
      color: white;
      box-shadow: 0 2px 8px rgba(44,110,47,0.3);
    }

    /* ── SECTION ANIMATION ── */
    .section {
      animation: fadeUp 0.22s ease both;
    }

    @keyframes fadeUp {
      from { opacity: 0; transform: translateY(8px); }
      to   { opacity: 1; transform: translateY(0); }
    }

    .hidden { display: none; }

    /* ── CARDS ── */
    .card-modern {
      background: var(--surface);
      border-radius: var(--radius-card);
      padding: 1.75rem;
      margin-bottom: 1.25rem;
      box-shadow: var(--card-shadow);
      border: 1px solid var(--border-light);
      transition: box-shadow 0.2s;
    }

    .card-modern:hover {
      box-shadow: var(--card-shadow-hover);
    }

    .card-modern h3 {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 1.25rem;
      display: flex;
      align-items: center;
      gap: 10px;
      padding-bottom: 0.875rem;
      border-bottom: 1px solid var(--border-light);
      color: var(--text-primary);
    }

    .card-modern h3 i {
      color: var(--accent);
      font-size: 1rem;
    }

    .card-modern h4 {
      font-size: 0.95rem;
      font-weight: 700;
      margin-bottom: 1rem;
      display: flex;
      align-items: center;
      gap: 8px;
      color: var(--text-primary);
    }

    .card-modern h4 i {
      color: var(--accent);
    }

    /* ── GRID ── */
    .grid-2col {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 1rem;
    }

    /* ── INPUTS ── */
    .input-group {
      margin-bottom: 0;
    }

    .input-group label {
      font-size: 0.8rem;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-secondary);
      display: flex;
      align-items: center;
      gap: 6px;
      letter-spacing: 0.01em;
    }

    .input-group label i {
      color: var(--accent);
      font-size: 0.8rem;
      width: 14px;
      text-align: center;
    }

    input, select {
      width: 100%;
      padding: 10px 13px;
      background: var(--input-bg);
      border: 1.5px solid var(--border-light);
      border-radius: var(--radius-input);
      font-size: 0.92rem;
      color: var(--text-primary);
      outline: none;
      font-family: 'Inter', sans-serif;
      transition: border-color 0.15s, box-shadow 0.15s;
    }

    input:hover, select:hover {
      border-color: var(--border-hover);
    }

    input:focus {
      border-color: var(--accent);
      box-shadow: 0 0 0 3px rgba(44, 110, 47, 0.15);
    }

    /* ── BUTTONS ── */
    button {
      font-family: 'Inter', sans-serif;
      font-weight: 600;
      border: none;
      cursor: pointer;
      border-radius: var(--radius-btn);
      transition: background 0.15s, transform 0.1s, box-shadow 0.15s;
    }

    .btn-primary {
      background: var(--accent);
      color: white;
      padding: 10px 20px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 0.9rem;
      box-shadow: 0 2px 6px rgba(44,110,47,0.25);
    }

    .btn-primary:hover {
      background: var(--accent-hover);
      box-shadow: 0 4px 12px rgba(44,110,47,0.35);
      transform: translateY(-1px);
    }

    .btn-primary:active {
      transform: translateY(0);
    }

    .btn-danger {
      background: var(--danger-soft);
      color: var(--danger);
      padding: 7px 13px;
      font-size: 0.8rem;
      border: 1px solid transparent;
    }

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

    /* ── DPS ITEMS ── */
    .dps-item {
      background: var(--surface-secondary);
      border-radius: 16px;
      padding: 1.25rem;
      margin-bottom: 1rem;
      border: 1px solid var(--border-light);
      border-left: 4px solid var(--accent);
      transition: box-shadow 0.2s;
    }

    .dps-item:hover {
      box-shadow: var(--card-shadow);
    }

    .dps-plan-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      margin-bottom: 1rem;
      gap: 0.5rem;
    }

    .dps-plan-header strong {
      font-size: 0.9rem;
      color: var(--accent);
      display: flex;
      align-items: center;
      gap: 6px;
    }

    /* ── RESULT HERO ── */
    .result-hero {
      text-align: center;
      background: linear-gradient(135deg, var(--accent-soft) 0%, var(--surface) 100%);
      border: 1px solid var(--border-light);
      padding: 2.5rem 2rem;
      border-radius: var(--radius-card);
      position: relative;
      overflow: hidden;
    }

    .result-hero::before {
      content: '';
      position: absolute;
      top: -40px;
      right: -40px;
      width: 160px;
      height: 160px;
      background: radial-gradient(circle, rgba(44,110,47,0.08) 0%, transparent 70%);
      pointer-events: none;
    }

    .result-hero .hero-icon {
      font-size: 2rem;
      color: var(--accent);
      margin-bottom: 0.75rem;
      display: block;
    }

    .result-hero > p {
      font-size: 0.85rem;
      color: var(--text-secondary);
      margin: 0.5rem 0 1.25rem;
      font-weight: 500;
      text-transform: uppercase;
      letter-spacing: 0.05em;
    }

    .zakat-amount {
      font-size: 3rem;
      font-weight: 800;
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      flex-wrap: wrap;
      letter-spacing: -0.03em;
      line-height: 1.1;
      margin: 0.5rem 0;
    }

    /* ── BREAKDOWN ── */
    .breakdown-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 0.875rem;
      margin-bottom: 1.25rem;
    }

    .breakdown-card {
      background: var(--surface-secondary);
      border: 1px solid var(--border-light);
      border-radius: 14px;
      padding: 1rem 1.125rem;
      display: flex;
      flex-direction: column;
      gap: 5px;
      transition: box-shadow 0.2s, transform 0.2s;
    }

    .breakdown-card:hover {
      box-shadow: var(--card-shadow);
      transform: translateY(-2px);
    }

    .breakdown-card.negative { border-left: 4px solid var(--danger); }
    .breakdown-card.positive { border-left: 4px solid var(--accent); }

    .breakdown-card .bc-label {
      font-size: 0.72rem;
      font-weight: 700;
      color: var(--text-secondary);
      text-transform: uppercase;
      letter-spacing: 0.06em;
    }

    .breakdown-card .bc-value {
      font-size: 1.2rem;
      font-weight: 800;
      color: var(--text-primary);
      letter-spacing: -0.02em;
    }

    .breakdown-card .bc-sub {
      font-size: 0.72rem;
      color: var(--text-secondary);
    }

    .breakdown-total {
      background: var(--accent-soft);
      border: 2px solid var(--accent);
      border-radius: 14px;
      padding: 1rem 1.5rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 0.5rem;
    }

    .breakdown-total .bt-label {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-secondary);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .breakdown-total .bt-value {
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--accent);
      letter-spacing: -0.02em;
    }

    /* ── MISC ── */
    .help-text {
      font-size: 0.75rem;
      color: var(--text-secondary);
      margin-top: 0.5rem;
      line-height: 1.5;
    }

    hr {
      border: none;
      border-top: 1px solid var(--border-light);
      margin: 1.25rem 0;
    }

    .currency-icon-svg {
      width: 32px;
      height: 32px;
      fill: currentColor;
    }

    /* ── FOOTER ── */
    footer {
      background: var(--surface);
      border-top: 1px solid var(--border-light);
      text-align: center;
      padding: 1rem 2rem;
      font-size: 0.78rem;
      color: var(--text-secondary);
      margin-top: auto;
    }

    footer a {
      color: var(--accent);
      text-decoration: none;
      font-weight: 600;
    }

    footer a:hover {
      text-decoration: underline;
    }

    /* ── RESPONSIVE ── */
    @media (max-width: 640px) {
      .app-header { padding: 0.75rem 1rem; }
      .container { padding: 0 1rem; margin: 1rem auto; }
      .card-modern { padding: 1.25rem; }
      .tabs-modern { gap: 4px; }
      .tab-btn { padding: 0.55rem 0.75rem; font-size: 0.82rem; min-width: unset; }
      .zakat-amount { font-size: 2.2rem; }
      .result-hero { padding: 1.75rem 1.25rem; }
    }

    /* ── CONVERTER BUTTON ── */
    .converter-btn {
      background: var(--surface-secondary);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-btn);
      padding: 7px 14px;
      display: inline-flex;
      align-items: center;
      gap: 7px;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-primary);
      cursor: pointer;
      transition: border-color 0.15s, background 0.15s;
    }
    .converter-btn:hover {
      border-color: var(--accent);
      color: var(--accent);
    }

    /* ── CONVERTER OVERLAY ── */
    .conv-overlay {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(0,0,0,0.35);
      z-index: 200;
      backdrop-filter: blur(2px);
    }
    .conv-overlay.open { display: block; }

    /* ── CONVERTER PANEL ── */
    .conv-panel {
      position: fixed;
      top: 0;
      right: 0;
      height: 100vh;
      width: 360px;
      max-width: 95vw;
      background: var(--surface);
      border-left: 1px solid var(--border-light);
      box-shadow: -4px 0 32px rgba(0,0,0,0.15);
      z-index: 201;
      transform: translateX(110%);
      transition: transform 0.3s cubic-bezier(0.4,0,0.2,1);
      display: flex;
      flex-direction: column;
      overflow-y: auto;
    }
    .conv-panel.open { transform: translateX(0); }

    .conv-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 1.1rem 1.25rem;
      border-bottom: 1px solid var(--border-light);
      font-weight: 700;
      font-size: 0.95rem;
      gap: 1rem;
      position: sticky;
      top: 0;
      background: var(--surface);
      z-index: 1;
    }
    .conv-header i { color: var(--accent); margin-right: 6px; }

    .conv-close {
      background: var(--surface-secondary);
      border: 1px solid var(--border-light);
      border-radius: 8px;
      width: 32px;
      height: 32px;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--text-secondary);
      font-size: 0.9rem;
      flex-shrink: 0;
    }
    .conv-close:hover { border-color: var(--danger); color: var(--danger); }

    .conv-section {
      padding: 1.1rem 1.25rem;
      border-bottom: 1px solid var(--border-light);
    }
    .conv-section h4 {
      font-size: 0.9rem;
      font-weight: 700;
      margin-bottom: 0.85rem;
      display: flex;
      align-items: center;
      gap: 7px;
      color: var(--text-primary);
    }

    .conv-gold-icon   { color: #f59e0b; }
    .conv-silver-icon { color: #94a3b8; }

    .conv-row {
      display: grid;
      grid-template-columns: 1fr auto 1fr;
      gap: 8px;
      align-items: end;
      margin-bottom: 0.5rem;
    }
    .conv-arrow {
      color: var(--text-secondary);
      font-size: 1rem;
      padding-bottom: 10px;
      display: flex;
      align-items: center;
    }

    .conv-field {
      display: flex;
      flex-direction: column;
      gap: 5px;
    }
    .conv-field label {
      font-size: 0.75rem;
      font-weight: 600;
      color: var(--text-secondary);
      letter-spacing: 0.01em;
    }
    .conv-field input {
      width: 100%;
      padding: 8px 10px;
      background: var(--input-bg);
      border: 1.5px solid var(--border-light);
      border-radius: var(--radius-input);
      font-size: 0.88rem;
      color: var(--text-primary);
      outline: none;
      font-family: 'Inter', sans-serif;
    }
    .conv-field input:focus {
      border-color: var(--accent);
      box-shadow: 0 0 0 3px rgba(44,110,47,0.12);
    }

    .conv-note {
      font-size: 0.72rem;
      color: var(--text-secondary);
      margin-top: 4px;
    }

    .conv-unit-row {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 0.75rem;
      font-size: 0.78rem;
      color: var(--text-secondary);
      font-weight: 500;
    }

    .conv-unit-toggle {
      display: flex;
      gap: 4px;
    }
    .cut-btn {
      background: var(--surface-secondary);
      border: 1px solid var(--border-light);
      border-radius: 7px;
      padding: 4px 10px;
      font-size: 0.78rem;
      font-weight: 600;
      color: var(--text-secondary);
      cursor: pointer;
    }
    .cut-btn.active {
      background: var(--accent);
      color: white;
      border-color: var(--accent);
    }
    .cut-btn:not(.active):hover { border-color: var(--accent); color: var(--accent); }

    .conv-result {
      margin-top: 0.75rem;
      padding: 0.75rem 1rem;
      background: var(--surface-secondary);
      border-radius: 10px;
      font-size: 0.82rem;
      color: var(--text-secondary);
      border: 1px solid var(--border-light);
      line-height: 1.6;
    }
    .conv-result.has-value {
      background: var(--accent-soft);
      border-color: var(--accent);
      color: var(--text-primary);
    }
    .conv-result strong {
      display: block;
      font-size: 1.1rem;
      font-weight: 800;
      color: var(--accent);
      letter-spacing: -0.02em;
    }
    .conv-result-sub {
      display: block;
      font-size: 0.72rem;
      color: var(--text-secondary);
      margin-top: 2px;
    }

    input#goldPrice,
    input#silverPrice {
      width: 158px;
    }