:root {
    --bg: #0d0f1a;
    --surface: #141728;
    --card: #1a1f35;
    --border: #2a3050;
    --accent: #f0a500;
    --accent2: #e05c00;
    --text: #e8eaf2;
    --muted: #7a82a0;
    --success: #22c55e;
    --error: #ef4444;
    --input-bg: #0f1220;
    --radius: 12px;
  }

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

  body {
    background: var(--bg);
    font-family: 'DM Sans', sans-serif;
    color: var(--text);
    min-height: 100vh;
    background-image: radial-gradient(ellipse at 20% 10%, #1e1040 0%, transparent 60%),
                      radial-gradient(ellipse at 80% 90%, #1a0a00 0%, transparent 60%);
  }

  /* TOP BAR */
  .topbar {
    background: #fdfdfd;
    border-bottom: 1px solid var(--border);
        padding: 7px 21px;
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .logo-mark {
    width: 36px; height: 36px;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    font-family: 'Playfair Display', serif;
    font-weight: 900; font-size: 18px; color: #fff;
  }
  .logo-text {
    font-family: 'Playfair Display', serif;
    font-weight: 700; font-size: 22px;
    background: linear-gradient(90deg, var(--accent), #fff);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  }

  /* MAIN CONTAINER */
  .container {
    max-width: 820px;
    margin: 40px auto;
    padding: 0 20px 80px;
  }

  /* PROGRESS BAR */
  .progress-wrap {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px 28px;
    margin-bottom: 28px;
  }
  .progress-label {
    font-size: 13px; color: var(--muted);
    margin-bottom: 12px;
    display: flex; justify-content: space-between;
  }
  .progress-label span { color: var(--accent); font-weight: 600; }
  .progress-bar-outer {
    height: 6px; background: var(--border);
    border-radius: 99px; overflow: hidden;
  }
  .progress-bar-inner {
    height: 100%;
    background: linear-gradient(90deg, var(--accent2), var(--accent));
    border-radius: 99px;
    transition: width 0.5s cubic-bezier(.4,0,.2,1);
  }
  .steps-dots {
    display: flex; gap: 8px; margin-top: 16px;
    flex-wrap: wrap;
  }
  .step-dot {
    flex: 1; min-width: 80px;
    text-align: center;
    font-size: 11px;
    padding: 6px 4px;
    border-radius: 8px;
    color: var(--muted);
    border: 1px solid var(--border);
    transition: all 0.3s;
    cursor: default;
  }
  .step-dot.active {
    background: rgba(240,165,0,0.12);
    border-color: var(--accent);
    color: var(--accent);
    font-weight: 600;
  }
  .step-dot.done {
    background: rgba(34,197,94,0.1);
    border-color: var(--success);
    color: var(--success);
  }

  /* CARD */
  .card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 36px 40px;
    display: none;
  }
  .card.active { display: block; animation: fadeUp 0.4s ease; }

  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
  }

  .step-heading {
    font-family: 'Playfair Display', serif;
    font-size: 28px; font-weight: 700;
    margin-bottom: 6px;
    background: linear-gradient(90deg, #fff 60%, var(--accent));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  }
  .step-sub {
    font-size: 14px; color: var(--muted);
    margin-bottom: 28px;
  }

  /* FORM ELEMENTS */
  .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
  .form-row.single { grid-template-columns: 1fr; }
  .form-group { margin-bottom: 20px; }
  label {
    display: block; font-size: 13px; font-weight: 500;
    color: var(--muted); margin-bottom: 7px; letter-spacing: 0.3px;
  }
  label span.req { color: var(--accent); margin-left: 2px; }

  input[type="text"], input[type="email"], input[type="tel"],
  input[type="date"], input[type="password"], input[type="number"],
  select, textarea {
    width: 100%;
    background: var(--input-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-family: 'DM Sans', sans-serif;
    font-size: 14px;
    padding: 12px 16px;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
  }
  input:focus, select:focus, textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(240,165,0,0.12);
  }
  input::placeholder, textarea::placeholder { color: #3a4060; }
  select option { background: #141728; }
  textarea { resize: vertical; min-height: 90px; }

  .char-count {
    text-align: right; font-size: 11px;
    color: var(--muted); margin-top: 4px;
  }

  /* ADDRESS GRID */
  .address-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .address-grid .full { grid-column: 1/-1; }

  /* CHECKBOX GROUPS */
  .check-group {
    display: flex; flex-wrap: wrap; gap: 10px;
  }
  .check-item {
    display: flex; align-items: center; gap: 8px;
    background: var(--input-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 8px 14px;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 13px;
    user-select: none;
  }
  .check-item:hover { border-color: var(--accent); }
  .check-item input[type="checkbox"] { accent-color: var(--accent); width: 15px; height: 15px; }
  .check-item.checked {
    background: rgba(240,165,0,0.1);
    border-color: var(--accent);
    color: var(--accent);
  }

  /* UPLOAD AREA */
  .upload-area {
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    background: var(--input-bg);
    position: relative;
  }
  .upload-area:hover { border-color: var(--accent); }
  .upload-area input[type="file"] {
    position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%;
  }
  .upload-icon { font-size: 28px; margin-bottom: 6px; }
  .upload-label { font-size: 13px; color: var(--muted); }
  .upload-label strong { color: var(--accent); }
  .file-name {
    margin-top: 8px; font-size: 12px;
    color: var(--success); display: none;
  }

  /* OTP */
  .otp-row {
    display: flex; gap: 10px; align-items: flex-end;
  }
  .otp-row .form-group { flex: 1; margin-bottom: 0; }

  .btn-send-otp {
    background: var(--input-bg);
    border: 1px solid var(--accent);
    color: var(--accent);
    border-radius: var(--radius);
    padding: 12px 18px;
    font-size: 13px;
    font-family: 'DM Sans', sans-serif;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s;
  }
  .btn-send-otp:hover { background: rgba(240,165,0,0.1); }

  /* SECURITY NOTE */
  .security-note {
    display: flex; align-items: center; gap: 8px;
    background: rgba(34,197,94,0.06);
    border: 1px solid rgba(34,197,94,0.2);
    border-radius: 10px;
    padding: 12px 16px;
    font-size: 13px;
    color: var(--success);
    margin-bottom: 20px;
  }

  /* PASSWORD RULES */
  .pw-rules {
    display: flex; flex-wrap: wrap; gap: 8px;
    margin-top: 8px;
  }
  .pw-rule {
    font-size: 11px; padding: 3px 10px;
    background: var(--input-bg);
    border: 1px solid var(--border);
    border-radius: 99px;
    color: var(--muted);
    transition: all 0.2s;
  }
  .pw-rule.ok { border-color: var(--success); color: var(--success); background: rgba(34,197,94,0.08); }

  /* BUTTONS */
  .btn-row {
    display: flex; gap: 12px; margin-top: 32px;
    justify-content: flex-end;
  }
  .btn {
    padding: 13px 28px;
    border-radius: var(--radius);
    font-family: 'DM Sans', sans-serif;
    font-size: 14px; font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
    display: flex; align-items: center; gap: 8px;
  }
  .btn-back {
    background: var(--input-bg);
    color: var(--muted);
    border: 1px solid var(--border);
  }
  .btn-back:hover { color: var(--text); border-color: var(--muted); }
  .btn-next {
    background: linear-gradient(135deg, var(--accent2), var(--accent));
    color: #fff;
    box-shadow: 0 4px 24px rgba(240,165,0,0.25);
  }
  .btn-next:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(240,165,0,0.35); }
  .btn-next:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

  /* INLINE CHECKBOX */
  .inline-check {
    display: flex; align-items: center; gap: 8px;
    font-size: 13px; color: var(--muted);
    margin-top: 8px; cursor: pointer;
  }
  .inline-check input { accent-color: var(--accent); }

  /* SUCCESS PAGE */
  .success-card {
    text-align: center;
    padding: 60px 40px;
  }
  .success-icon {
    width: 90px; height: 90px;
    background: linear-gradient(135deg, #22c55e, #16a34a);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 40px;
    margin: 0 auto 24px;
    animation: popIn 0.5s cubic-bezier(.175,.885,.32,1.275);
    box-shadow: 0 0 60px rgba(34,197,94,0.3);
  }
  @keyframes popIn {
    from { transform: scale(0); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
  }
  .success-title {
    font-family: 'Playfair Display', serif;
    font-size: 32px; font-weight: 700;
    color: var(--success);
    margin-bottom: 12px;
  }
  .success-msg { color: var(--muted); font-size: 15px; line-height: 1.7; }

  /* FIELD ERROR */
  .field-error {
    font-size: 11px; color: var(--error);
    margin-top: 4px; display: none;
  }
  input.invalid, select.invalid, textarea.invalid {
    border-color: var(--error);
  }

  /* LOADING SPINNER */
  .spinner {
    display: none;
    width: 18px; height: 18px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
  }
  @keyframes spin { to { transform: rotate(360deg); } }

  /* TOAST */
  .toast {
    position: fixed; bottom: 24px; right: 24px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 14px 20px;
    font-size: 14px;
    display: flex; align-items: center; gap: 10px;
    opacity: 0; transform: translateY(20px);
    transition: all 0.3s;
    z-index: 9999;
    max-width: 320px;
  }
  .toast.show { opacity: 1; transform: translateY(0); }
  .toast.success { border-color: var(--success); color: var(--success); }
  .toast.error { border-color: var(--error); color: var(--error); }

  /* DIVIDER */
  .divider {
    height: 1px; background: var(--border);
    margin: 24px 0;
  }

  @media (max-width: 600px) {
    .card { padding: 24px 20px; }
    .form-row { grid-template-columns: 1fr; }
    .address-grid { grid-template-columns: 1fr; }
    .address-grid .full { grid-column: 1; }
    .step-dot { font-size: 10px; min-width: 60px; }
    .topbar { padding: 14px 20px; }
  }