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

    :root {
      --bg:        #0D0D0F;
      --surface:   #16161A;
      --surface-2: #1E1E24;
      --border:    #2A2A32;
      --border-2:  #38383F;
      --accent:    #146059;
      --primary:    #ebbb34;
      --accent-dim: rgba(123, 97, 255, 0.15);
      --accent-glow: rgba(123, 97, 255, 0.35);
      --text:      #d1dbc2;
      --text-muted: #6E6E82;
      --text-sub:  #44444F;
      --error:     #FF6B6B;
      --success:   #4ECDC4;
    }

    html, body {
      height: 100%;
      font-family: 'Inter', sans-serif;
      background: var(--bg);
      color: var(--text);
      -webkit-font-smoothing: antialiased;
    }


    .stat-pill {
      display: flex;
      flex-direction: column;
      gap: 4px;
      padding: 14px 18px;
      background: var(--surface-2);
      border: 1px solid var(--border);
      border-radius: 10px;
    }

    .stat-pill .num {
      font-family: 'DM Mono', monospace;
      font-size: 20px;
      font-weight: 500;
      color: var(--text);
    }

    .stat-pill .lbl {
      font-size: 11px;
      color: var(--text-muted);
      letter-spacing: 0.04em;
    }

    /* ── Right panel ── */
    .auth-panel-right {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 15px 32px;
      background: var(--bg);
    }

    .login-page-title{
        color: var(--primary);
        padding-bottom: 20px;
    }

    .auth-card {
      width: 100%;
      max-width: 400px;
    }

    /* ── Tab switcher ── */
    .auth-tabs {
      display: flex;
      gap: 0;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 4px;
      margin-bottom: 40px;
      position: relative;
    }

    .auth-tab-indicator {
      position: absolute;
      top: 4px;
      left: 4px;
      width: calc(50% - 4px);
      height: calc(100% - 8px);
      background: var(--surface-2);
      border: 1px solid var(--border-2);
      border-radius: 8px;
      transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
      will-change: transform;
    }

    .auth-tabs[data-active="register"] .auth-tab-indicator {
      transform: translateX(calc(100% + 0px));
    }

    .auth-tab-btn {
      flex: 1;
      position: relative;
      z-index: 1;
      padding: 10px 16px;
      background: none;
      border: none;
      cursor: pointer;
      font-family: 'Inter', sans-serif;
      font-size: 13px;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: 8px;
      transition: color 0.25s ease;
      letter-spacing: 0.01em;
    }

    .auth-tab-btn.active {
      color: var(--text);
    }

    /* ── Form panels ── */
    .auth-forms-wrap {
      position: relative;
      overflow: hidden;
    }

    .auth-form-panel {
      transition: opacity 0.35s ease, transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
      will-change: opacity, transform;
    }

    .auth-form-panel.hidden {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      pointer-events: none;
      opacity: 0;
    }

    .auth-form-panel.hidden.slide-left {
      transform: translateX(-28px);
    }

    .auth-form-panel.hidden.slide-right {
      transform: translateX(28px);
    }

    .auth-form-panel.visible {
      opacity: 1;
      transform: translateX(0);
    }

    /* ── Form header ── */
    .form-header {
      margin-bottom: 32px;
    }

    .form-eyebrow {
      font-family: 'DM Mono', monospace;
      font-size: 11px;
      font-weight: 400;
      letter-spacing: 0.14em;
      text-transform: uppercase;
      color: var(--primary);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .form-eyebrow::before {
      content: '';
      display: block;
      width: 16px;
      height: 1px;
      background: var(--accent);
      flex-shrink: 0;
    }

    .form-header h1 {
      font-size: 26px;
      font-weight: 600;
      letter-spacing: -0.03em;
      margin-bottom: 8px;
    }

    .form-header p {
      font-size: 13.5px;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* ── Inputs ── */
    .field-group {
      display: flex;
      flex-direction: column;
      gap: 20px;
      margin-bottom: 28px;
    }

    .field {
      position: relative;
    }

    .field label {
      display: block;
      font-size: 11.5px;
      font-weight: 500;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      color: var(--text-muted);
      margin-bottom: 8px;
      transition: color 0.2s ease;
    }

    .field:focus-within label {
      color: var(--accent);
    }

    .field-input-wrap {
      position: relative;
    }

    .field input {
      width: 100%;
      padding: 13px 16px;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 10px;
      color: var(--text);
      font-family: 'Inter', sans-serif;
      font-size: 14px;
      font-weight: 400;
      outline: none;
      transition: border-color 0.2s ease, background 0.2s ease;
      letter-spacing: 0.01em;
    }

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

    .field input:focus {
      background: var(--surface-2);
      border-color: var(--border-2);
    }

    /* The animated underline */
    .field-line {
      position: absolute;
      bottom: 0;
      left: 50%;
      transform: translateX(-50%);
      width: 0%;
      height: 2px;
      background: var(--accent);
      border-radius: 0 0 10px 10px;
      transition: width 0.35s cubic-bezier(0.4, 0, 0.2, 1);
      pointer-events: none;
    }

    .field input:focus ~ .field-line {
      width: 100%;
    }

    /* Glow on the input when focused */
    .field-input-wrap::before {
      content: '';
      position: absolute;
      inset: -1px;
      border-radius: 11px;
      background: transparent;
      box-shadow: 0 0 0 0 var(--accent-glow);
      transition: box-shadow 0.3s ease;
      pointer-events: none;
      z-index: 0;
    }

    .field input:focus ~ .field-glow {
      box-shadow: 0 0 0 3px var(--accent-dim);
    }

    .field-glow {
      position: absolute;
      inset: -1px;
      border-radius: 11px;
      box-shadow: 0 0 0 0px var(--accent-dim);
      transition: box-shadow 0.3s ease;
      pointer-events: none;
      z-index: 0;
    }

    .field input:focus + .field-line + .field-glow {
      box-shadow: 0 0 0 3px var(--accent-dim);
    }

    /* Row layout for name fields */
    .field-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
    }

    /* Password toggle */
    .field-action {
      position: absolute;
      right: 14px;
      top: 50%;
      transform: translateY(-50%);
      background: none;
      border: none;
      cursor: pointer;
      color: var(--text-muted);
      padding: 4px;
      display: flex;
      align-items: center;
      transition: color 0.2s ease;
      z-index: 1;
    }

    .field-action:hover {
      color: var(--text);
    }

    .field-action svg {
      width: 16px;
      height: 16px;
    }

    /* ── Submit button ── */
    .btn-primary {
      width: 100%;
      padding: 14px 20px;
      background: var(--accent);
      border: none;
      border-radius: 10px;
      color: #fff;
      font-family: 'Inter', sans-serif;
      font-size: 14px;
      font-weight: 500;
      letter-spacing: 0.02em;
      cursor: pointer;
      position: relative;
      overflow: hidden;
      transition: transform 0.15s ease, box-shadow 0.25s ease;
    }

    .btn-primary::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(255,255,255,0.12) 0%, transparent 60%);
      pointer-events: none;
    }

    /* Ripple layer */
    .btn-primary::after {
      content: '';
      position: absolute;
      inset: 0;
      background: radial-gradient(circle at var(--mx, 50%) var(--my, 50%), rgba(255,255,255,0.2) 0%, transparent 70%);
      opacity: 0;
      transition: opacity 0.4s ease;
      pointer-events: none;
    }

    .btn-primary:hover {
      box-shadow: 0 0 0 4px var(--accent-dim), 0 8px 24px rgba(123, 97, 255, 0.35);
      transform: translateY(-1px);
    }

    .btn-primary:hover::after {
      opacity: 1;
    }

    .btn-primary:active {
      transform: translateY(0px);
      box-shadow: 0 0 0 2px var(--accent-dim);
    }

    .btn-primary span {
      position: relative;
      z-index: 1;
    }

    /* ── Footer note ── */
    .form-footer-note {
      margin-top: 24px;
      text-align: center;
      font-size: 12.5px;
      color: var(--text-muted);
    }

    .form-footer-note a {
      color: var(--accent);
      text-decoration: none;
      font-weight: 500;
      cursor: pointer;
    }

    .form-footer-note a:hover {
      text-decoration: underline;
    }

    /* Divider */
    .form-divider {
      display: flex;
      align-items: center;
      gap: 14px;
      margin: 24px 0;
      color: var(--text-sub);
      font-size: 11.5px;
      letter-spacing: 0.06em;
      text-transform: uppercase;
    }

    .form-divider::before,
    .form-divider::after {
      content: '';
      flex: 1;
      height: 1px;
      background: var(--border);
    }

    /* Password strength bar */
    .pw-strength {
      margin-top: 8px;
      display: flex;
      gap: 4px;
      height: 2px;
    }

    .pw-strength-seg {
      flex: 1;
      border-radius: 2px;
      background: var(--border);
      transition: background 0.3s ease;
    }

    .pw-strength-seg.filled-weak   { background: #FF6B6B; }
    .pw-strength-seg.filled-mid    { background: #FFB347; }
    .pw-strength-seg.filled-strong { background: var(--success); }

    /* Forgot password link */
    .field-meta {
      display: flex;
      justify-content: flex-end;
      margin-top: 6px;
    }

    .field-meta a {
      font-size: 11.5px;
      color: var(--text-muted);
      text-decoration: none;
      transition: color 0.2s ease;
    }

    .field-meta a:hover {
      color: var(--accent);
    }

    /* ── SVG animation keyframes ── */
    @keyframes markRotate {
      from { transform: rotate(0deg); }
      to   { transform: rotate(360deg); }
    }

    @keyframes pulse-ring {
      0%   { r: 14; opacity: 0.6; }
      100% { r: 20; opacity: 0; }
    }

    @keyframes breathe {
      0%, 100% { opacity: 0.6; transform: scale(1); }
      50%       { opacity: 1;   transform: scale(1.04); }
    }

    .brand-mark-anim {
      animation: breathe 4s ease-in-out infinite;
      transform-origin: center;
    }

    /* Left panel visual animation */
    @keyframes floatY {
      0%, 100% { transform: translateY(0px); }
      50%       { transform: translateY(-10px); }
    }

    .left-visual-graphic {
      animation: floatY 6s ease-in-out infinite;
    }

    /* ── Responsive ── */
    @media (max-width: 860px) {
      .auth-panel-left {
        display: none;
      }

      .auth-panel-right {
        padding: 40px 24px;
        min-height: 100vh;
      }
    }

    @media (max-width: 480px) {
      .field-row {
        grid-template-columns: 1fr;
      }
    }