:root {
      --bg-page: #f8fafc;
      --bg-surface: #ffffff;
      --bg-subtle: #f1f5f9;
      --border-subtle: #e2e8f0;
      --border-strong: #cbd5e1;
      --text-main: #0f172a;
      --text-secondary: #475569;
      --text-muted: #94a3b8;

      /* Approved Emerald Green Palette */
      --emerald-primary: #059669;
      --emerald-hover: #047857;
      --emerald-dark: #065f46;
      --emerald-deep: #022c22;
      --emerald-light: #ecfdf5;
      --emerald-border: #a7f3d0;
      --teal-accent: #0f766e;
      --teal-light: #f0fdfa;

      --rose: #e11d48;
      --rose-light: #fff1f2;
      --rose-border: #fecdd3;

      --shadow-sm: 0 1px 3px 0 rgba(15, 23, 42, 0.08), 0 1px 2px -1px rgba(15, 23, 42, 0.08);
      --shadow-card: 0 20px 35px -8px rgba(15, 23, 42, 0.08), 0 6px 16px -4px rgba(15, 23, 42, 0.04);
      --shadow-glass: 0 25px 50px -12px rgba(0, 0, 0, 0.35);
      --radius-sm: 6px;
      --radius-md: 9px;
      --radius-lg: 14px;
      --radius-xl: 20px;
    }

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

    body {
      background-color: var(--bg-page);
      color: var(--text-main);
      font-family: "Plus Jakarta Sans", system-ui, -apple-system, sans-serif;
      font-size: 12px;
      line-height: 1.45;
      -webkit-font-smoothing: antialiased;
      min-height: 100vh;
      display: flex;
      overflow-x: hidden;
    }

    .font-mono-nums {
      font-family: "JetBrains Mono", monospace;
      font-variant-numeric: tabular-nums;
    }

    /* Split Screen Layout Container */
    .split-layout {
      display: flex;
      width: 100%;
      min-height: 100vh;
    }

    /* =========================================================
       LEFT HERO BRAND PANEL (Executive Financial Governance)
       ========================================================= */
    .hero-panel {
      flex: 1.15;
      background: linear-gradient(150deg, #044e3b 0%, #065f46 45%, #0f766e 85%, #0d5f59 100%);
      color: #ffffff;
      padding: 48px 56px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      position: relative;
      overflow: hidden;
    }

    /* Ambient geometric grid and currency watermark */
    .hero-panel::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        radial-gradient(rgba(255, 255, 255, 0.12) 1px, transparent 1px),
        radial-gradient(circle at 15% 20%, rgba(16, 185, 129, 0.25) 0%, transparent 50%),
        radial-gradient(circle at 85% 80%, rgba(2, 44, 34, 0.6) 0%, transparent 60%);
      background-size: 28px 28px, 100% 100%, 100% 100%;
      background-position: 0 0, 0 0, 0 0;
      opacity: 0.85;
      pointer-events: none;
    }

    /* Currency Outline Watermark in background */
    .hero-watermark {
      position: absolute;
      right: -80px;
      top: 25%;
      width: 480px;
      height: 320px;
      opacity: 0.055;
      pointer-events: none;
      transform: rotate(-12deg);
      color: #ffffff;
    }

    .hero-content-top {
      position: relative;
      z-index: 2;
      max-width: 520px;
    }

    .hero-logo-circle {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: #ffffff;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18);
      margin-bottom: 24px;
      padding: 6px;
      border: 2px solid rgba(255, 255, 255, 0.3);
      transition: transform 0.2s ease;
    }

    .hero-logo-circle:hover {
      transform: scale(1.04);
    }

    .hero-logo-img {
      width: 100%;
      height: 100%;
      object-fit: contain;
    }

    .hero-title {
      font-size: 34px;
      font-weight: 800;
      line-height: 1.18;
      letter-spacing: -0.03em;
      color: #ffffff;
      margin-bottom: 14px;
      text-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
    }

    .hero-divider {
      width: 44px;
      height: 3px;
      background: #34d399;
      border-radius: 2px;
      margin-bottom: 16px;
    }

    .hero-desc {
      font-size: 13.5px;
      line-height: 1.55;
      color: rgba(255, 255, 255, 0.88);
      font-weight: 500;
      max-width: 440px;
    }

    /* Hero bottom badges */
    .hero-footer-strip {
      position: relative;
      z-index: 2;
      display: flex;
      align-items: center;
      gap: 20px;
      margin-top: 24px;
      font-size: 11px;
      color: rgba(255, 255, 255, 0.75);
    }

    .hero-footer-item {
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .hero-footer-item svg {
      color: #34d399;
    }

    /* =========================================================
       RIGHT AUTH PANEL (Clean Slate Ergonomics)
       ========================================================= */
    .auth-panel {
      flex: 1;
      background: var(--bg-page);
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      padding: 40px 32px;
      position: relative;
    }

    /* Subtle background grid on right panel */
    .auth-panel::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image: radial-gradient(var(--border-subtle) 1px, transparent 1px);
      background-size: 24px 24px;
      opacity: 0.75;
      pointer-events: none;
    }

    .auth-card-wrapper {
      width: 100%;
      max-width: 400px;
      position: relative;
      z-index: 1;
    }

    /* Main Login Card */
    .login-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-xl);
      box-shadow: var(--shadow-card);
      padding: 34px 28px 28px 28px;
      position: relative;
    }

    /* Top Centered Circular Logo Badge */
    .card-logo-center {
      display: flex;
      justify-content: center;
      margin-top: -12px;
      margin-bottom: 16px;
    }

    .card-logo-badge {
      width: 56px;
      height: 56px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--emerald-border);
      box-shadow: 0 4px 14px rgba(5, 150, 105, 0.16), 0 1px 3px rgba(0, 0, 0, 0.04);
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 7px;
      position: relative;
    }

    .card-logo-badge::after {
      content: "";
      position: absolute;
      inset: -4px;
      border-radius: 50%;
      border: 1px solid var(--emerald-border);
      opacity: 0.6;
    }

    .card-logo-img {
      width: 100%;
      height: 100%;
      object-fit: contain;
    }

    /* Title Block */
    .auth-title-block {
      text-align: center;
      margin-bottom: 22px;
    }

    .auth-title {
      font-size: 22px;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.025em;
    }

    .auth-subtitle {
      font-size: 12.5px;
      color: var(--text-secondary);
      margin-top: 4px;
      font-weight: 500;
    }

    /* Alert notification boxes */
    .alert-box {
      padding: 9px 12px;
      background: var(--rose-light);
      border: 1px solid var(--rose-border);
      border-radius: var(--radius-md);
      color: #9f1239;
      font-size: 11.5px;
      font-weight: 600;
      display: flex;
      align-items: flex-start;
      gap: 8px;
      margin-bottom: 16px;
      line-height: 1.4;
    }

    .alert-box-success {
      background: var(--emerald-light);
      border-color: var(--emerald-border);
      color: var(--emerald-dark);
    }

    /* Form Fields */
    .form-group {
      margin-bottom: 14px;
    }

    .field-label {
      display: block;
      font-size: 12px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .input-wrapper {
      position: relative;
      display: flex;
      align-items: center;
    }

    .input-icon-left {
      position: absolute;
      left: 11px;
      color: var(--text-muted);
      pointer-events: none;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .input-control {
      width: 100%;
      height: 38px;
      padding: 0 12px 0 36px;
      font-family: inherit;
      font-size: 12px;
      font-weight: 500;
      color: var(--text-main);
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      transition: all 0.15s ease;
      outline: none;
    }

    .input-control::placeholder {
      color: var(--text-muted);
      font-size: 12px;
    }

    .input-control:hover {
      border-color: var(--border-strong);
    }

    .input-control:focus {
      border-color: var(--emerald-primary);
      box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.16);
    }

    .input-password {
      padding-right: 36px;
    }

    .password-toggle-btn {
      position: absolute;
      right: 8px;
      height: 26px;
      width: 26px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: transparent;
      border: none;
      border-radius: var(--radius-sm);
      color: var(--text-muted);
      cursor: pointer;
      transition: all 0.15s ease;
    }

    .password-toggle-btn:hover {
      color: var(--text-main);
      background: var(--bg-subtle);
    }

    /* Remember Me Row */
    .form-options-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin: 12px 0 18px 0;
    }

    .checkbox-label {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      cursor: pointer;
      user-select: none;
      font-size: 12px;
      font-weight: 600;
      color: var(--text-secondary);
    }

    .checkbox-custom {
      width: 16px;
      height: 16px;
      border: 1px solid var(--border-strong);
      border-radius: 4px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: #ffffff;
      transition: all 0.15s ease;
      position: relative;
    }

    .checkbox-custom svg {
      opacity: 0;
      transition: opacity 0.15s ease;
    }

    input[type="checkbox"] {
      position: absolute;
      opacity: 0;
      width: 0;
      height: 0;
    }

    input[type="checkbox"]:checked + .checkbox-custom {
      background: var(--emerald-primary);
      border-color: var(--emerald-primary);
      color: #ffffff;
    }

    input[type="checkbox"]:checked + .checkbox-custom svg {
      opacity: 1;
    }

    input[type="checkbox"]:focus + .checkbox-custom {
      box-shadow: 0 0 0 2px rgba(5, 150, 105, 0.2);
    }

    /* Log In Button */
    .btn-login {
      width: 100%;
      height: 40px;
      background: linear-gradient(135deg, var(--emerald-primary) 0%, var(--emerald-dark) 100%);
      color: #ffffff;
      border: none;
      border-radius: var(--radius-md);
      font-family: inherit;
      font-size: 13px;
      font-weight: 700;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      transition: all 0.15s ease;
      box-shadow: 0 3px 6px rgba(5, 150, 105, 0.2);
    }

    .btn-login:hover {
      background: linear-gradient(135deg, var(--emerald-hover) 0%, #064e3b 100%);
      box-shadow: 0 6px 14px rgba(5, 150, 105, 0.3);
      transform: translateY(-1px);
    }

    .btn-login:active {
      transform: translateY(0);
      box-shadow: 0 1px 3px rgba(5, 150, 105, 0.2);
    }

    .btn-login:disabled {
      opacity: 0.8;
      cursor: not-allowed;
      transform: none;
    }

    /* Card Footer Copyright */
    .card-footer-copyright {
      margin-top: 20px;
      text-align: center;
      font-size: 11px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    @keyframes spin {
      100% { transform: rotate(360deg); }
    }

    /* Responsive Breakpoints */
    @media (max-width: 960px) {
      .split-layout {
        flex-direction: column;
      }

      .hero-panel {
        padding: 32px 24px;
        flex: none;
      }

      .auth-panel {
        padding: 36px 20px;
      }

      .hero-title {
        font-size: 26px;
      }
    }

    @media (max-width: 480px) {
      .hero-panel {
        padding: 28px 20px;
      }

      .hero-footer-strip {
        flex-wrap: wrap;
        gap: 10px;
      }

      .login-card {
        padding: 26px 18px 20px 18px;
      }
    }

    .forgot-password-link {
      font-size: 11px;
      font-weight: 600;
      color: var(--emerald-primary);
      text-decoration: none;
    }

    .btn-login.is-loading {
      pointer-events: none;
      opacity: 0.88;
    }

    .login-spinner {
      animation: spin 0.8s linear infinite;
    }