:root {
      --bg-primary:   #060b1a;
      --bg-secondary: rgba(16, 24, 46, 0.55);
      --bg-card:      rgba(20, 30, 56, 0.62);
      --border:       rgba(96, 140, 220, 0.18);
      --border-focus: #2f8bff;
      --accent:       #2f8bff;
      --accent-dark:  #1467e6;
      --accent-light: #6fb4ff;
      --accent-cyan:  #34d6f0;
      --accent-glow:  rgba(47, 139, 255, 0.55);
      --text-primary: #eaf1ff;
      --text-secondary:#94a6c9;
      --text-muted:   #5a6c8e;
      --success:      #1fd18c;
      --warning:      #f5b73c;
      --danger:       #f0596b;
      --panel-w:      480px;
    }

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

    body {
      font-family: 'Inter', sans-serif;
      background: #04060f;
      color: var(--text-primary);
      font-size: 14px;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      position: relative;
    }

    body::before {
      content: '';
      position: fixed;
      inset: 0;
      z-index: -1;
      background:
        radial-gradient(900px 600px at 85% -10%, rgba(47,139,255,0.20), transparent 60%),
        radial-gradient(760px 560px at 8% 12%, rgba(52,214,240,0.12), transparent 58%),
        radial-gradient(1000px 700px at 50% 120%, rgba(31,92,220,0.18), transparent 60%),
        linear-gradient(180deg, #070d20 0%, #050912 55%, #04060f 100%);
    }

    h1,h2,h3,h4,h5,h6,.brand-font {
      font-family: 'Rajdhani', sans-serif;
      letter-spacing: 0.02em;
    }

    /* ─── LAYOUT ─── */
    .auth-shell {
      display: flex;
      min-height: 100vh;
    }

    /* LEFT — info panel */
    .auth-info {
      flex: 1;
      background: var(--bg-secondary);
      border-right: 1px solid var(--border);
      display: flex;
      flex-direction: column;
      padding: 2.5rem;
      position: relative;
      overflow: hidden;
    }

    /* subtle grid overlay */
    .auth-info::before {
      content: '';
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(var(--border) 1px, transparent 1px),
        linear-gradient(90deg, var(--border) 1px, transparent 1px);
      background-size: 40px 40px;
      opacity: 0.18;
      pointer-events: none;
    }

    /* vertical accent stripe */
    .auth-info::after {
      content: '';
      position: absolute;
      left: 0; top: 0; bottom: 0;
      width: 200px;
      background: radial-gradient(circle at left, rgba(47,139,255,0.32), transparent 70%);
      pointer-events: none;
    }

    .info-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      text-decoration: none;
      position: relative;
      z-index: 1;
    }

    .info-logo img { height: 38px; width: auto; filter: drop-shadow(0 0 10px var(--accent-glow)); }

    .info-brand-name {
      font-family: 'Rajdhani', sans-serif;
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--text-primary);
      letter-spacing: 0.05em;
    }
    .info-brand-name span { color: var(--accent); }

    .info-body {
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: center;
      position: relative;
      z-index: 1;
      padding: 2rem 0;
      max-width: 420px;
    }

    .info-tagline {
      font-size: clamp(1.6rem, 3vw, 2.1rem);
      font-weight: 700;
      line-height: 1.22;
      margin-bottom: 1rem;
      color: var(--text-primary);
    }

    .info-tagline span { color: var(--accent); }

    .info-sub {
      color: var(--text-secondary);
      font-size: 0.875rem;
      line-height: 1.65;
      margin-bottom: 2rem;
    }

    .info-stats {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
      margin-bottom: 2.5rem;
    }

    .info-stat {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: 14px; backdrop-filter: blur(12px);
      padding: 0.85rem 1rem;
    }

    .info-stat-val {
      font-family: 'Rajdhani', sans-serif;
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-primary);
      line-height: 1;
      margin-bottom: 3px;
    }

    .info-stat-label {
      font-size: 0.7rem;
      color: var(--text-muted);
      text-transform: uppercase;
      letter-spacing: 0.07em;
    }

    .info-pillars {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .pillar {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 10px 14px;
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: 14px;
    }

    .pillar-icon {
      width: 30px; height: 30px;
      background: rgba(26,122,255,0.1);
      border: 1px solid rgba(26,122,255,0.2);
      border-radius: 10px; box-shadow: 0 0 16px rgba(47,139,255,0.25);
      display: flex; align-items: center; justify-content: center;
      color: var(--accent);
      font-size: 0.85rem;
      flex-shrink: 0;
    }

    .pillar-text { font-size: 0.82rem; font-weight: 500; }
    .pillar-sub  { font-size: 0.72rem; color: var(--text-muted); }

    .info-footer {
      position: relative; z-index: 1;
      color: var(--text-muted);
      font-size: 0.72rem;
      line-height: 1.5;
      border-top: 1px solid var(--border);
      padding-top: 1.2rem;
    }

    /* RIGHT — form panel */
    .auth-form-panel {
      width: var(--panel-w);
      flex-shrink: 0;
      display: flex;
      flex-direction: column;
      background: rgba(8,13,28,0.5); backdrop-filter: blur(18px); border-left: 1px solid var(--border);
      overflow-y: auto;
    }

    .auth-form-inner {
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: center;
      padding: 2.5rem 2.5rem;
    }

    /* Tab switcher */
    .auth-tabs {
      display: flex;
      background: var(--bg-secondary);
      border: 1px solid var(--border);
      border-radius: 999px;
      padding: 3px;
      margin-bottom: 2rem;
    }

    .auth-tab {
      flex: 1;
      padding: 9px 0;
      text-align: center;
      font-size: 0.875rem;
      font-weight: 600;
      border-radius: 999px;
      cursor: pointer;
      color: var(--text-secondary);
      transition: background 0.18s, color 0.18s;
      border: none;
      background: none;
    }

    .auth-tab.active {
      background: linear-gradient(135deg, var(--accent), var(--accent-dark));
      color: #fff;
      box-shadow: 0 4px 16px rgba(47,139,255,0.4);
    }

    /* Form heading */
    .form-heading { font-size: 1.5rem; font-weight: 700; margin-bottom: 4px; }
    .form-sub { color: var(--text-secondary); font-size: 0.82rem; margin-bottom: 1.8rem; }

    /* Inputs */
    .field { margin-bottom: 1.1rem; }

    .field-label {
      display: block;
      color: var(--text-secondary);
      font-size: 0.72rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      margin-bottom: 6px;
    }

    .field-wrap {
      position: relative;
    }

    .field-icon {
      position: absolute;
      left: 12px; top: 50%;
      transform: translateY(-50%);
      color: var(--text-muted);
      font-size: 0.9rem;
      pointer-events: none;
      transition: color 0.2s;
    }

    .field-input {
      width: 100%;
      background: rgba(8,14,30,0.72);
      border: 1px solid var(--border);
      border-radius: 12px;
      color: var(--text-primary);
      font-size: 0.875rem;
      padding: 10px 12px 10px 36px;
      outline: none;
      transition: border-color 0.2s, background 0.2s;
      font-family: 'Inter', sans-serif;
    }

    .field-input::placeholder { color: var(--text-muted); }

    .field-input:focus {
      border-color: var(--accent);
      background: rgba(8,14,30,0.9);
      box-shadow: 0 0 0 3px rgba(47,139,255,0.16);
    }

    .field-input:focus + .field-icon,
    .field-wrap:focus-within .field-icon { color: var(--accent); }

    /* Password toggle */
    .field-input.has-toggle { padding-right: 40px; }

    .pw-toggle {
      position: absolute;
      right: 12px; top: 50%;
      transform: translateY(-50%);
      background: none; border: none;
      color: var(--text-muted);
      cursor: pointer;
      font-size: 0.9rem;
      padding: 0;
      transition: color 0.2s;
    }
    .pw-toggle:hover { color: var(--text-secondary); }

    /* Strength meter */
    .strength-bar {
      display: flex;
      gap: 4px;
      margin-top: 6px;
    }
    .strength-seg {
      flex: 1; height: 3px;
      background: var(--border);
      border-radius: 2px;
      transition: background 0.3s;
    }
    .strength-seg.weak   { background: var(--danger); }
    .strength-seg.fair   { background: var(--warning); }
    .strength-seg.strong { background: var(--success); }
    .strength-label {
      font-size: 0.68rem;
      color: var(--text-muted);
      margin-top: 4px;
    }

    /* Validation states */
    .field-input.is-invalid { border-color: var(--danger); }
    .field-error { font-size: 0.72rem; color: var(--danger); margin-top: 5px; display: none; }
    .field-input.is-invalid ~ .field-error { display: block; }

    /* Row fields */
    .field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

    /* Checkbox */
    .pg-check {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      cursor: pointer;
      font-size: 0.8rem;
      color: var(--text-secondary);
      margin-bottom: 0.8rem;
      user-select: none;
    }
    .pg-check input[type=checkbox] {
      width: 16px; height: 16px;
      flex-shrink: 0;
      margin-top: 1px;
      accent-color: var(--accent);
      cursor: pointer;
    }
    .pg-check a { color: var(--accent); text-decoration: none; }
    .pg-check a:hover { text-decoration: underline; }

    /* Primary button */
    .btn-pg-primary {
      width: 100%;
      background: linear-gradient(135deg, var(--accent), var(--accent-dark)); box-shadow: 0 8px 24px rgba(47,139,255,0.4);
      color: #fff;
      border: none;
      border-radius: 999px;
      padding: 11px 0;
      font-family: 'Rajdhani', sans-serif;
      font-size: 1rem;
      font-weight: 700;
      letter-spacing: 0.05em;
      cursor: pointer;
      transition: background 0.2s;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
    }
    .btn-pg-primary:hover { filter: brightness(1.07); transform: translateY(-1px); box-shadow: 0 12px 30px rgba(47,139,255,0.5); }
    .btn-pg-primary:disabled { opacity: 0.5; cursor: not-allowed; }

    /* Outline button */
    .btn-pg-outline {
      width: 100%;
      background: transparent;
      color: var(--text-secondary);
      border: 1px solid var(--border);
      border-radius: 999px;
      padding: 10px 0;
      font-size: 0.875rem;
      font-weight: 500;
      cursor: pointer;
      transition: border-color 0.2s, color 0.2s;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
    }
    .btn-pg-outline:hover { border-color: var(--text-secondary); color: var(--text-primary); }

    /* Divider */
    .or-divider {
      display: flex;
      align-items: center;
      gap: 10px;
      margin: 1rem 0;
      color: var(--text-muted);
      font-size: 0.72rem;
    }
    .or-divider::before,
    .or-divider::after {
      content: '';
      flex: 1;
      height: 1px;
      background: var(--border);
    }

    /* Switch link */
    .switch-link {
      text-align: center;
      margin-top: 1.4rem;
      font-size: 0.82rem;
      color: var(--text-secondary);
    }
    .switch-link button {
      background: none; border: none;
      color: var(--accent);
      font-weight: 600;
      cursor: pointer;
      padding: 0;
      font-size: 0.82rem;
    }
    .switch-link button:hover { text-decoration: underline; }

    /* Alert */
    .pg-alert {
      border-radius: 5px;
      padding: 10px 14px;
      font-size: 0.8rem;
      margin-bottom: 1rem;
      display: none;
    }
    .pg-alert.error   { background: rgba(224,82,82,0.1); border: 1px solid rgba(224,82,82,0.25); color: var(--danger); }
    .pg-alert.success { background: rgba(14,184,127,0.1); border: 1px solid rgba(14,184,127,0.25); color: var(--success); }
    .pg-alert.show    { display: flex; align-items: center; gap: 8px; }

    /* Trust badges */
    .trust-row {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
      margin-top: 1.4rem;
    }
    .trust-badge {
      display: flex;
      align-items: center;
      gap: 5px;
      font-size: 0.7rem;
      color: var(--text-muted);
    }
    .trust-badge i { color: var(--success); font-size: 0.75rem; }

    /* Referral badge */
    .referral-hint {
      background: rgba(26,122,255,0.07);
      border: 1px solid rgba(26,122,255,0.2);
      border-radius: 5px;
      padding: 9px 14px;
      font-size: 0.78rem;
      color: var(--accent-light);
      margin-bottom: 1.1rem;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    /* Step progress (register) */
    .step-progress {
      display: flex;
      align-items: center;
      gap: 0;
      margin-bottom: 1.8rem;
    }
    .step-dot {
      width: 26px; height: 26px;
      border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      font-size: 0.72rem;
      font-weight: 700;
      border: 2px solid var(--border);
      color: var(--text-muted);
      background: var(--bg-secondary);
      flex-shrink: 0;
      transition: all 0.25s;
    }
    .step-dot.done  { background: var(--success); border-color: var(--success); color: #fff; }
    .step-dot.active{ background: var(--accent);  border-color: var(--accent);  color: #fff; }
    .step-line {
      flex: 1;
      height: 2px;
      background: var(--border);
      transition: background 0.25s;
    }
    .step-line.done { background: var(--success); }
    .step-label {
      font-size: 0.65rem;
      color: var(--text-muted);
      text-align: center;
      margin-top: 4px;
    }
    .step-group {
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    /* Country flag select prefix */
    .phone-wrap {
      display: flex;
      gap: 8px;
    }
    .phone-prefix {
      width: 72px;
      flex-shrink: 0;
      background: var(--bg-secondary);
      border: 1px solid var(--border);
      border-radius: 5px;
      color: var(--text-primary);
      font-size: 0.875rem;
      padding: 10px 8px;
      outline: none;
    }
    .phone-prefix:focus { border-color: var(--accent); }

    /* Tooltip hint */
    .field-hint {
      font-size: 0.68rem;
      color: var(--text-muted);
      margin-top: 4px;
    }

    /* Success checkmark animation */
    .check-circle {
      width: 56px; height: 56px;
      background: rgba(14,184,127,0.1);
      border: 2px solid var(--success);
      border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      font-size: 1.5rem;
      color: var(--success);
      margin: 0 auto 1.2rem;
    }

    /* Forgot password link */
    .forgot-link {
      background: none; border: none;
      color: var(--accent-light);
      font-size: 0.78rem;
      cursor: pointer;
      padding: 0;
      text-decoration: none;
    }
    .forgot-link:hover { text-decoration: underline; }

    /* Mobile */
    @media (max-width: 820px) {
      .auth-info { display: none; }
      .auth-form-panel { width: 100%; }
    }

    /* Scrollbar */
    ::-webkit-scrollbar { width: 5px; }
    ::-webkit-scrollbar-track { background: var(--bg-primary); }
    ::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

    /* Page visibility */
    .auth-view { display: none; }
    .auth-view.active { display: block; }

    /* Success page */
    #view-success { text-align: center; }

    /* Spinner */
    .spinner {
      width: 16px; height: 16px;
      border: 2px solid rgba(255,255,255,0.3);
      border-top-color: #fff;
      border-radius: 50%;
      animation: spin 0.7s linear infinite;
      display: none;
    }
    @keyframes spin { to { transform: rotate(360deg); } }