:root {
      --primary: #6366f1;
      --primary-hover: #4f46e5;
      --primary-glow: rgba(99, 102, 241, 0.3);
      --secondary: #0ea5e9;
      --accent: #f43f5e;
      --bg: #060c1a;
      --card: rgba(20, 30, 50, 0.8);
      --border: rgba(255, 255, 255, 0.07);
      --text: #f1f5f9;
      --text-light: #94a3b8;
      --text-muted: #475569;
    }

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

    html,
    body {
      height: 100%;
    }

    body {
      font-family: 'Plus Jakarta Sans', sans-serif;
      background: var(--bg);
      color: var(--text);
      display: flex;
      align-items: center;
      justify-content: center;
      min-height: 100vh;
      padding: 20px;
      position: relative;
      overflow: hidden;
    }

    /* Gradient blobs */
    body::before {
      content: '';
      position: fixed;
      inset: 0;
      background:
        radial-gradient(ellipse at 15% 20%, rgba(99, 102, 241, 0.22) 0%, transparent 55%),
        radial-gradient(ellipse at 85% 80%, rgba(14, 165, 233, 0.2) 0%, transparent 55%);
      pointer-events: none;
    }

    /* Floating orbs */
    .orb {
      position: fixed;
      border-radius: 50%;
      filter: blur(70px);
      pointer-events: none;
      animation: floatOrb 8s ease-in-out infinite;
    }

    .orb-1 {
      width: 300px;
      height: 300px;
      background: rgba(99, 102, 241, 0.16);
      top: -80px;
      left: -80px;
    }

    .orb-2 {
      width: 240px;
      height: 240px;
      background: rgba(14, 165, 233, 0.13);
      bottom: -60px;
      right: -60px;
      animation-delay: -4s;
    }

    @keyframes floatOrb {

      0%,
      100% {
        transform: translate(0, 0);
      }

      50% {
        transform: translate(20px, -20px);
      }
    }

    /* Grid dots */
    body::after {
      content: '';
      position: fixed;
      inset: 0;
      background-image: radial-gradient(circle, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
      background-size: 44px 44px;
      pointer-events: none;
    }

    /* Login card */
    .login-box {
      background: rgba(15, 22, 40, 0.9);
      backdrop-filter: blur(28px);
      border: 1px solid rgba(255, 255, 255, 0.09);
      padding: 52px 44px;
      border-radius: 28px;
      width: 100%;
      max-width: 400px;
      box-shadow:
        0 0 0 1px rgba(255, 255, 255, 0.04) inset,
        0 40px 60px -16px rgba(0, 0, 0, 0.75),
        0 0 80px rgba(99, 102, 241, 0.08);
      position: relative;
      z-index: 1;
      text-align: center;
    }

    .login-logo {
      width: 60px;
      height: 60px;
      border-radius: 18px;
      background: linear-gradient(135deg, #6366f1, #0ea5e9);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 26px;
      margin: 0 auto 22px;
      box-shadow: 0 8px 28px rgba(99, 102, 241, 0.4);
    }

    .login-box h1 {
      font-size: 1.7rem;
      font-weight: 800;
      letter-spacing: -0.03em;
      margin-bottom: 5px;
    }

    .login-sub {
      color: var(--text-muted);
      font-size: 0.85rem;
      margin-bottom: 30px;
    }

    .login-form {
      display: flex;
      flex-direction: column;
      gap: 14px;
      text-align: left;
    }

    .input-group {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    label {
      font-size: 0.72rem;
      font-weight: 700;
      color: var(--text-light);
      text-transform: uppercase;
      letter-spacing: 0.08em;
    }

    .input-wrap {
      position: relative;
    }

    .input-icon {
      position: absolute;
      left: 14px;
      top: 50%;
      transform: translateY(-50%);
      font-size: 15px;
      opacity: 0.4;
      pointer-events: none;
    }

    input {
      width: 100%;
      background: rgba(6, 12, 26, 0.6);
      border: 1.5px solid rgba(255, 255, 255, 0.07);
      border-radius: 12px;
      padding: 13px 16px 13px 42px;
      color: var(--text);
      font-family: inherit;
      font-size: 0.92rem;
      font-weight: 500;
      transition: all 0.25s;
    }

    input::placeholder {
      color: #334155;
    }

    input:focus {
      outline: none;
      border-color: rgba(99, 102, 241, 0.55);
      background: rgba(6, 12, 26, 0.8);
      box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.12);
    }

    .toggle-pass {
      position: absolute;
      right: 12px;
      top: 50%;
      transform: translateY(-50%);
      background: none;
      border: none;
      color: var(--text-muted);
      cursor: pointer;
      padding: 4px;
      font-size: 15px;
      transition: color 0.2s;
    }

    .toggle-pass:hover {
      color: var(--text-light);
    }

    #login-error {
      background: rgba(244, 63, 94, 0.1);
      border: 1px solid rgba(244, 63, 94, 0.25);
      color: #fb7185;
      font-size: 0.8rem;
      font-weight: 600;
      padding: 10px 14px;
      border-radius: 10px;
      text-align: center;
      display: none;
    }

    .login-btn {
      background: linear-gradient(135deg, #6366f1, #4f46e5);
      color: #fff;
      border: none;
      padding: 14px;
      border-radius: 12px;
      font-family: inherit;
      font-weight: 700;
      font-size: 0.95rem;
      cursor: pointer;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      width: 100%;
      margin-top: 2px;
      box-shadow: 0 8px 22px rgba(99, 102, 241, 0.35);
    }

    .login-btn:hover {
      background: linear-gradient(135deg, #818cf8, #6366f1);
      transform: translateY(-2px);
      box-shadow: 0 14px 30px rgba(99, 102, 241, 0.5);
    }

    .login-btn:disabled {
      opacity: 0.6;
      cursor: not-allowed;
      transform: none;
    }

    .session-note {
      margin-top: 18px;
      font-size: 0.72rem;
      color: var(--text-muted);
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 5px;
    }

    @keyframes shake {

      0%,
      100% {
        transform: translateX(0);
      }

      25% {
        transform: translateX(-10px);
      }

      75% {
        transform: translateX(10px);
      }
    }

    .back-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-top: 28px;
      padding: 8px 16px;
      color: var(--text-muted);
      text-decoration: none;
      font-size: 0.78rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      transition: all 0.2s;
      border-radius: 12px;
      border: 1px solid transparent;
    }

    .back-link:hover {
      color: var(--text-light);
      background: rgba(255, 255, 255, 0.03);
      border-color: var(--border);
    }

    /* ── Theme Toggle ────────────────────────────────────── */
    #theme-toggle {
      position: fixed;
      top: 16px;
      right: 16px;
      z-index: 100;
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.12);
      cursor: pointer;
      font-size: 18px;
      transition: all 0.2s;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    #theme-toggle:hover {
      background: rgba(99, 102, 241, 0.12);
      border-color: rgba(99, 102, 241, 0.3);
    }

    /* ── Light Theme ────────────────────────────────────── */
    [data-theme="light"] {
      --bg: #f0f4fb;
      --card: rgba(255, 255, 255, 0.97);
      --border: rgba(0, 0, 0, 0.09);
      --text: #0f172a;
      --text-light: #475569;
      --text-muted: #94a3b8;
    }

    [data-theme="light"] body {
      background: #f0f4fb;
    }

    [data-theme="light"] body::before {
      background:
        radial-gradient(ellipse at 15% 20%, rgba(99, 102, 241, 0.08) 0%, transparent 55%),
        radial-gradient(ellipse at 85% 80%, rgba(14, 165, 233, 0.06) 0%, transparent 55%);
    }

    [data-theme="light"] body::after {
      background-image: radial-gradient(circle, rgba(0, 0, 0, 0.04) 1px, transparent 1px);
    }

    [data-theme="light"] .orb-1 {
      background: rgba(99, 102, 241, 0.06);
    }

    [data-theme="light"] .orb-2 {
      background: rgba(14, 165, 233, 0.05);
    }

    [data-theme="light"] .login-box {
      background: rgba(255, 255, 255, 0.97);
      border-color: rgba(0, 0, 0, 0.08);
      box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.03) inset, 0 40px 60px -16px rgba(0, 0, 0, 0.12), 0 0 80px rgba(99, 102, 241, 0.04);
    }

    /* ── Input Overrides ── */
    [data-theme="light"] input,
    [data-theme="light"] textarea,
    [data-theme="light"] select {
      background: #f8fafc !important;
      border-color: rgba(0, 0, 0, 0.1) !important;
      color: #0f172a !important;
    }

    [data-theme="light"] input:focus,
    [data-theme="light"] textarea:focus,
    [data-theme="light"] select:focus {
      background: #fff !important;
      border-color: rgba(99, 102, 241, 0.5) !important;
      box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1) !important;
    }

    [data-theme="light"] input::placeholder,
    [data-theme="light"] textarea::placeholder {
      color: #94a3b8 !important;
    }

    [data-theme="light"] #login-error {
      background: rgba(244, 63, 94, 0.06);
    }

    [data-theme="light"] .back-link:hover {
      background: rgba(0, 0, 0, 0.03);
      border-color: rgba(0, 0, 0, 0.08);
    }

    [data-theme="light"] #theme-toggle {
      background: rgba(0, 0, 0, 0.04);
      border-color: rgba(0, 0, 0, 0.1);
    }

    [data-theme="light"] #theme-toggle:hover {
      background: rgba(99, 102, 241, 0.08);
    }
  


    [data-theme="light"] body {
      background: #f0f4fb !important;
    }

    [data-theme="light"] body::before {
      background:
        radial-gradient(ellipse at 15% 20%, rgba(99, 102, 241, 0.08) 0%, transparent 55%),
        radial-gradient(ellipse at 85% 80%, rgba(14, 165, 233, 0.06) 0%, transparent 55%) !important;
    }

    [data-theme="light"] body::after {
      background-image: radial-gradient(circle, rgba(0, 0, 0, 0.035) 1px, transparent 1px) !important;
    }

    [data-theme="light"] .orb-1 {
      background: rgba(99, 102, 241, 0.06) !important;
    }

    [data-theme="light"] .orb-2 {
      background: rgba(14, 165, 233, 0.05) !important;
    }

    [data-theme="light"] .login-box {
      background: rgba(255, 255, 255, 0.99) !important;
      border-color: rgba(0, 0, 0, 0.08) !important;
      box-shadow: 0 40px 60px -16px rgba(0, 0, 0, 0.12), 0 0 0 1px rgba(0, 0, 0, 0.02) !important;
    }

    [data-theme="light"] .login-box h1,
    [data-theme="light"] .login-box h2 {
      background: linear-gradient(to right, #4f46e5, #0ea5e9) !important;
      background-clip: text !important;
      -webkit-text-fill-color: transparent !important;
    }

    [data-theme="light"] .login-sub,
    [data-theme="light"] .login-box p {
      color: #64748b !important;
    }

    [data-theme="light"] label {
      color: #475569 !important;
    }

    [data-theme="light"] input {
      background: #f1f5f9 !important;
      border-color: rgba(0, 0, 0, 0.1) !important;
      color: #0f172a !important;
    }

    [data-theme="light"] input:focus {
      background: #fff !important;
      border-color: rgba(99, 102, 241, 0.5) !important;
    }

    [data-theme="light"] input::placeholder {
      color: #94a3b8 !important;
    }

    [data-theme="light"] .toggle-pass {
      color: #94a3b8 !important;
    }

    [data-theme="light"] #login-error {
      background: rgba(244, 63, 94, 0.06) !important;
      color: #f43f5e !important;
    }

    [data-theme="light"] .back-link {
      color: #94a3b8 !important;
      border-color: rgba(0, 0, 0, 0.06) !important;
    }

    [data-theme="light"] .back-link:hover {
      background: rgba(0, 0, 0, 0.03) !important;
      color: #475569 !important;
      border-color: rgba(0, 0, 0, 0.09) !important;
    }

    [data-theme="light"] .login-divider {
      color: #94a3b8 !important;
    }

    [data-theme="light"] .login-logo-text span:first-child {
      color: #1e293b !important;
    }

    [data-theme="light"] #theme-toggle {
      background: #f1f5f9 !important;
      border-color: rgba(0, 0, 0, 0.09) !important;
    }

    [data-theme="light"] #theme-toggle:hover {
      background: rgba(99, 102, 241, 0.08) !important;
    }