:root {
            --font-family-base: 'Lato', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
            --font-family-display: 'Oswald', 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
            --bg-raised: #151A21;
            --text-primary: #F2F5F8;
            --text-muted: #B5C0CC;
            --brand-teal: #12DAD1;
            --accent-copper: #FF9A3C;
        }

        /* ===== BODY ===== */
        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-family-base);
            background: linear-gradient(135deg, #0B0E13 0%, #1a1d26 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            color: var(--text-primary);
        }

        /* ===== NAVBAR ===== */
        .navbar {
            display: flex !important;
            justify-content: space-between !important;
            align-items: center !important;
            background: var(--bg-raised) !important;
            padding: 12px 24px !important;
            color: var(--text-primary) !important;
            position: fixed !important;
            top: 0 !important;
            left: 0 !important;
            right: 0 !important;
            z-index: 9999 !important;
            box-shadow: 0 3px 20px #0005 !important;
            gap: 20px !important;
            min-height: 68px !important;
            flex-wrap: nowrap !important;
        }

        /* ===== BRAND SECTION ===== */
        .brand {
            display: flex;
            align-items: center;
            gap: 18px;
            text-decoration: none;
            color: var(--text-primary);
            min-width: fit-content;
            flex-shrink: 0;
        }

        .brand-logo {
            height: 58px;
            width: 58px;
            object-fit: contain;
            display: block;
            background: none;
            border-radius: 10px;
            box-shadow: 0 1px 10px rgba(30, 220, 230, 0.10), 0 2px 14px rgba(16, 38, 65, 0.19), 0 8px 36px rgba(0, 0, 0, 0.18);
            filter: drop-shadow(0 0 4px #0ff5) brightness(1.18) contrast(1.15);
            transition: filter .21s, transform .19s;
        }

        .brand-logo:hover {
            filter: drop-shadow(0 0 12px #12dad1bb) brightness(1.28) contrast(1.19);
            transform: scale(1.09);
        }

        .brand-center {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: 2px;
            line-height: 1.1;
        }

        .brand-text {
            font-family: var(--font-family-display);
            font-size: 1.6rem;
            font-weight: 700;
            letter-spacing: 2.5px;
            line-height: 1.1;
            white-space: nowrap;
            text-transform: uppercase;
        }

        .nextgen-highlight {
            color: var(--brand-teal);
            font-weight: 700;
            letter-spacing: 2.5px;
            text-transform: uppercase;
        }

        .facade-highlight {
            color: var(--accent-copper);
            font-weight: 700;
            letter-spacing: 2.5px;
            text-transform: uppercase;
        }

        .brand-tagline {
            font-family: var(--font-family-base);
            color: var(--text-muted);
            font-size: 0.95rem;
            letter-spacing: .8px;
            font-weight: 300;
            margin-top: 2px;
            text-shadow: 0 2px 8px #141e1e4a;
            line-height: 1.33;
            white-space: nowrap;
        }

        .navbar-right {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
            min-width: fit-content;
        }

        .home-btn {
            font-family: var(--font-family-base);
            color: var(--text-primary);
            text-decoration: none;
            font-size: 1.02rem;
            font-weight: 700;
            padding: 10px 20px;
            border-radius: 8px;
            transition: all .24s ease;
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            border: 1.5px solid rgba(18, 218, 209, 0.3);
        }

        .home-btn:hover {
            color: var(--brand-teal);
            background: rgba(18, 218, 209, 0.08);
            border-color: var(--brand-teal);
        }

        .home-btn:focus-visible {
            box-shadow: 0 0 0 3px rgba(18, 218, 209, 0.25);
            outline: 2px solid var(--brand-teal);
            outline-offset: 2px;
        }

        /* ===== LOGIN CONTAINER ===== */
        .login-container {
            flex: 1;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 90px 20px 30px 20px;
            min-height: calc(100vh - 68px);
        }

        .login-card {
            background: rgba(32, 38, 48, 0.95);
            border-radius: 14px;
            padding: 32px 36px;
            max-width: 440px;
            width: 100%;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4), 0 0 1px rgba(18, 218, 209, 0.3);
            border: 1px solid rgba(18, 218, 209, 0.1);
            animation: slideUp 0.6s cubic-bezier(0.4, 0, 0.2, 1);
        }

        @keyframes slideUp {
            0% { opacity: 0; transform: translateY(30px); }
            100% { opacity: 1; transform: translateY(0); }
        }

        .login-header {
            text-align: center;
            margin-bottom: 24px;
        }

        .login-icon {
            font-size: 2.5rem;
            background: linear-gradient(135deg, var(--brand-teal) 0%, var(--accent-copper) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 8px;
            display: block;
        }

        .login-header h1 {
            font-family: var(--font-family-display);
            font-size: 1.65rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 6px 0;
            letter-spacing: 0.8px;
        }

        .login-subtitle {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.4;
            margin: 0;
        }

        .input-group {
            margin-bottom: 16px;
        }

        .input-group label {
            display: block;
            font-weight: 600;
            font-size: 0.88rem;
            color: #b2e3fc;
            margin-bottom: 6px;
            letter-spacing: 0.3px;
        }

        .input-group input {
            width: 100%;
            height: 46px;
            padding: 0 14px;
            border: 2px solid #313b4e;
            border-radius: 8px;
            background: #1a1d26;
            font-size: 0.95rem;
            color: var(--text-primary);
            outline: none;
            font-family: var(--font-family-base);
            transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            box-sizing: border-box;
        }

        .input-group input:focus {
            border-color: var(--brand-teal);
            box-shadow: 0 0 0 3px rgba(18, 218, 209, 0.12);
            background: #23252b;
        }

        .password-group {
            position: relative;
            display: flex;
            align-items: center;
        }

        .password-group input {
            width: 100%;
            height: 46px;
            padding-right: 44px;
            box-sizing: border-box;
        }

        .toggle-password {
            position: absolute;
            right: 12px;
            top: 50%;
            transform: translateY(-50%);
            cursor: pointer;
            color: #9ca3af;
            font-size: 1.1em;
            background: transparent;
            border: none;
            padding: 4px;
            outline: none;
            transition: color 0.15s;
            z-index: 10;
        }

        .toggle-password:hover,
        .toggle-password:focus {
            color: var(--brand-teal);
        }

        .forgot-password {
            text-align: right;
            margin: -6px 0 16px 0;
        }

        .forgot-link {
            color: var(--brand-teal);
            text-decoration: none;
            font-size: 0.85rem;
            font-weight: 600;
            transition: color 0.2s;
        }

        .forgot-link:hover {
            color: var(--accent-copper);
            text-decoration: underline;
        }

        .button-row {
            display: flex;
            gap: 10px;
            margin-top: 18px;
        }

        .login-btn,
        .register-btn {
            flex: 1;
            height: 46px;
            font-size: 0.95rem;
            font-weight: 700;
            font-family: var(--font-family-display);
            letter-spacing: 0.6px;
            border-radius: 8px;
            border: none;
            cursor: pointer;
            text-transform: uppercase;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .login-btn {
            background: linear-gradient(135deg, var(--brand-teal) 0%, #0088ff 100%);
            color: #fff;
            box-shadow: 0 4px 16px rgba(18, 218, 209, 0.3);
        }

        .login-btn:hover {
            background: linear-gradient(135deg, #00e5e5 0%, #0099ff 100%);
            box-shadow: 0 6px 24px rgba(18, 218, 209, 0.4);
            transform: translateY(-2px);
        }

        .login-btn:active {
            transform: translateY(0);
        }

        .register-btn {
            background: rgba(54, 63, 85, 0.8);
            color: var(--accent-copper);
            border: 1.5px solid rgba(255, 154, 60, 0.2);
        }

        .register-btn:hover {
            background: rgba(35, 42, 56, 0.9);
            color: #ffd740;
            border-color: rgba(255, 154, 60, 0.4);
        }

        .divider {
            display: flex;
            align-items: center;
            text-align: center;
            margin: 16px 0;
            color: var(--text-muted);
            font-size: 0.8rem;
        }

        .divider::before,
        .divider::after {
            content: '';
            flex: 1;
            border-bottom: 1px solid #313b4e;
        }

        .divider span {
            padding: 0 10px;
        }

        .google-btn {
            width: 100%;
            height: 44px;
            background: #fff;
            color: #333;
            border: 2px solid #e0e0e0;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.25s;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            text-decoration: none;
        }

        .google-btn:hover {
            background: #f8f8f8;
            border-color: #d0d0d0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }

        .error-msg {
            background: rgba(255, 107, 107, 0.1);
            border: 1.5px solid rgba(255, 107, 107, 0.3);
            border-left: 3px solid #ff6b6b;
            padding: 10px 14px;
            margin-top: 14px;
            border-radius: 8px;
            color: #ff6b6b;
            font-size: 0.85rem;
            font-weight: 600;
            text-align: center;
            animation: shake 0.5s ease-in-out;
        }

        @keyframes shake {
            0%, 100% { transform: translateX(0); }
            25% { transform: translateX(-8px); }
            75% { transform: translateX(8px); }
        }

        .success-message,
        .logout-message {
            background: rgba(76, 175, 80, 0.1);
            border: 1.5px solid rgba(76, 175, 80, 0.3);
            border-left: 3px solid #4caf50;
            padding: 10px 14px;
            margin-top: 14px;
            border-radius: 8px;
            color: #4caf50;
            font-size: 0.85rem;
            font-weight: 600;
            text-align: center;
        }

        .alert-warning {
            background: rgba(255, 193, 7, 0.1);
            border: 1.5px solid rgba(255, 193, 7, 0.3);
            border-left: 3px solid #ffc107;
            padding: 10px 14px;
            margin: 14px 0 0 0;
            border-radius: 8px;
            color: #ffc107;
            font-size: 0.85rem;
            font-weight: 600;
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 900px) {
            .navbar {
                padding: 8px 12px !important;
                gap: 12px !important;
            }
            .brand {
                gap: 12px;
            }
            .brand-logo {
                height: 44px;
                width: 44px;
            }
            .brand-text {
                font-size: 1.2rem;
                letter-spacing: 1.8px;
            }
            .brand-tagline {
                font-size: 0.9rem;
                display: none;
            }
            .home-btn {
                font-size: 0.88rem;
                padding: 6px 12px;
            }
        }

        @media (max-width: 600px) {
            .navbar {
                padding: 6px 8px !important;
            }
            .brand {
                gap: 8px;
            }
            .brand-logo {
                height: 36px;
                width: 36px;
            }
            .brand-text {
                font-size: 1rem;
                letter-spacing: 1.2px;
            }
            .home-btn {
                font-size: 0.8rem;
                padding: 5px 10px;
            }

            .login-container {
                padding: 80px 16px 24px 16px;
            }

            .login-card {
                padding: 28px 24px;
            }

            .login-header h1 {
                font-size: 1.45rem;
            }

            .login-icon {
                font-size: 2.2rem;
            }

            .input-group input {
                height: 44px;
                font-size: 0.9rem;
            }

            .password-group input {
                height: 44px;
            }

            .login-btn,
            .register-btn {
                height: 44px;
                font-size: 0.9rem;
            }

            .button-row {
                flex-direction: column;
                gap: 8px;
            }

            .google-btn {
                height: 42px;
                font-size: 0.88rem;
            }
        }