/* ============================================================
           CSS VARIABLES - Same as Dashboard
           ============================================================ */
        :root {
            --primary-dark: #0a1628;
            --primary: #1a2a4a;
            --primary-medium: #1e3a6f;
            --primary-light: #2b4f8c;
            --primary-gradient: linear-gradient(135deg, #0a1628 0%, #1a2a4a 50%, #1e3a6f 100%);
            
            --accent: #4a90d9;
            --accent-light: #6aafe6;
            --accent-glow: #3a7bc8;
            
            --text-primary: #ffffff;
            --text-secondary: #b0c4de;
            --text-muted: #7a9bcb;
            
            --bg-dark: #0d1b2a;
            --bg-card: rgba(26, 42, 74, 0.88);
            --bg-card-hover: rgba(30, 58, 111, 0.4);
            --bg-sidebar: rgba(13, 27, 42, 0.98);
            --bg-modal: rgba(0, 0, 0, 0.85);
            
            --border-color: rgba(74, 144, 217, 0.25);
            --border-glow: rgba(74, 144, 217, 0.35);
            
            --shadow-glow: 0 4px 20px rgba(74, 144, 217, 0.2);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5);
            
            --radius: 12px;
            --radius-lg: 20px;
            
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
            background: var(--bg-dark);
            position: relative;
        }

        /* ============================================================
           BACKGROUND - Digital Marketing Image
           ============================================================ */
        .page-bg {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 0;
            background: var(--bg-dark);
        }

        .page-bg .bg-image {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('https://images.unsplash.com/photo-1432889821006-c6c5b1d7a2e0?w=1920&q=80') center center / cover no-repeat;
            opacity: 0.3;
            transition: opacity 0.5s ease;
        }

        /* Fallback if image doesn't load */
        .page-bg .bg-image::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(135deg, 
                rgba(10, 22, 40, 0.85) 0%,
                rgba(26, 42, 74, 0.7) 50%,
                rgba(13, 27, 42, 0.85) 100%
            );
        }

        .page-bg .gradient-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg,
                rgba(10, 22, 40, 0.6) 0%,
                rgba(13, 27, 42, 0.4) 30%,
                rgba(26, 42, 74, 0.3) 50%,
                rgba(13, 27, 42, 0.4) 70%,
                rgba(10, 22, 40, 0.7) 100%
            );
            z-index: 1;
        }

        .page-bg .grid-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 2;
            background-image: 
                linear-gradient(rgba(74, 144, 217, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(74, 144, 217, 0.03) 1px, transparent 1px);
            background-size: 60px 60px;
        }

        /* ============================================================
           LOGIN CONTAINER
           ============================================================ */
        .login-container {
            position: relative;
            z-index: 10;
            display: grid;
            grid-template-columns: 1fr 1fr;
            max-width: 1000px;
            width: 100%;
            background: var(--bg-card);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 60px rgba(0, 0, 0, 0.6);
            overflow: hidden;
        }

        /* Left side - Brand & Image */
        .login-image {
            background: linear-gradient(135deg, 
                rgba(10, 22, 40, 0.9) 0%,
                rgba(26, 42, 74, 0.7) 50%,
                rgba(30, 58, 111, 0.8) 100%
            );
            padding: 48px 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            text-align: center;
            min-height: 400px;
            position: relative;
            overflow: hidden;
            border-right: 1px solid var(--border-color);
        }

        .login-image::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -50%;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle, rgba(74, 144, 217, 0.1) 0%, transparent 70%);
            pointer-events: none;
        }

        .login-image .brand-icon {
            font-size: 56px;
            margin-bottom: 12px;
            position: relative;
            z-index: 2;
            filter: drop-shadow(0 4px 20px rgba(74, 144, 217, 0.3));
        }

        .login-image .brand-name {
            font-size: 32px;
            font-weight: 900;
            letter-spacing: -1px;
            margin-bottom: 4px;
            position: relative;
            z-index: 2;
            color: var(--text-primary);
            line-height: 1.2;
        }

        .login-image .brand-name span {
            color: var(--accent-light);
        }

        .login-image .brand-tagline {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 300;
            margin-bottom: 28px;
            position: relative;
            z-index: 2;
        }

        .login-image .brand-tagline strong {
            color: var(--text-primary);
        }

        .login-image .features {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 12px;
            margin-top: 16px;
            width: 100%;
            position: relative;
            z-index: 2;
        }

        .login-image .feature-item {
            padding: 14px 10px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--transition);
        }

        .login-image .feature-item:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
            border-color: rgba(255, 255, 255, 0.15);
        }

        .login-image .feature-item i {
            font-size: 20px;
            color: var(--accent-light);
            margin-bottom: 6px;
            display: block;
        }

        .login-image .feature-item span {
            font-size: 11px;
            color: var(--text-secondary);
            font-weight: 400;
        }

        .login-image .brand-decoration {
            position: absolute;
            bottom: -30px;
            right: -30px;
            font-size: 180px;
            opacity: 0.04;
            z-index: 1;
            transform: rotate(-10deg);
        }

        /* Right side - Form */
        .login-form {
            padding: 48px 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            background: rgba(13, 27, 42, 0.4);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .login-form .form-header {
            margin-bottom: 32px;
        }

        .login-form .form-header h2 {
            font-size: 28px;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 6px;
            color: var(--text-primary);
        }

        .login-form .form-header p {
            color: var(--text-secondary);
            font-size: 14px;
        }

        .login-form .form-group {
            margin-bottom: 20px;
        }

        .login-form .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            margin-bottom: 6px;
        }

        .login-form .form-group .input-wrapper {
            position: relative;
        }

        .login-form .form-group .input-wrapper i {
            position: absolute;
            left: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 16px;
            transition: var(--transition);
            z-index: 2;
        }

        .login-form .form-group input:focus + i,
        .login-form .form-group input:focus ~ i {
            color: var(--accent-light);
        }

        .login-form .form-group input {
            width: 100%;
            padding: 12px 16px 12px 44px;
            background: rgba(10, 22, 40, 0.7);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            color: var(--text-primary);
            font-size: 14px;
            font-family: 'Inter', sans-serif;
            transition: var(--transition);
            outline: none;
        }

        .login-form .form-group input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(74, 144, 217, 0.15);
            background: rgba(10, 22, 40, 0.9);
        }

        .login-form .form-group input::placeholder {
            color: var(--text-muted);
        }

        .login-form .btn-login {
            width: 100%;
            padding: 14px;
            background: linear-gradient(135deg, #1e3a6f 0%, #2b4f8c 50%, #3a7bc8 100%);
            border: none;
            border-radius: var(--radius);
            color: white;
            font-size: 16px;
            font-weight: 600;
            font-family: 'Inter', sans-serif;
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            margin-top: 4px;
            position: relative;
            overflow: hidden;
        }

        .login-form .btn-login::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
            transition: left 0.6s ease;
        }

        .login-form .btn-login:hover::before {
            left: 100%;
        }

        .login-form .btn-login:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 25px rgba(74, 144, 217, 0.4);
            background: linear-gradient(135deg, #2b4f8c 0%, #4a90d9 100%);
        }

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

        .login-form .btn-login i {
            font-size: 18px;
            transition: var(--transition);
        }

        .login-form .btn-login:hover i {
            transform: translateX(4px);
        }

        .login-form .btn-login:disabled {
            opacity: 0.7;
            cursor: not-allowed;
            transform: none !important;
        }

        .login-form .btn-login:disabled::before {
            display: none;
        }

        .login-form .error-message {
            background: rgba(231, 76, 60, 0.12);
            border: 1px solid rgba(231, 76, 60, 0.2);
            color: #e74c3c;
            padding: 12px 16px;
            border-radius: var(--radius);
            font-size: 13px;
            margin-bottom: 16px;
            display: none;
            align-items: center;
            gap: 10px;
        }

        .login-form .error-message i {
            font-size: 16px;
            flex-shrink: 0;
        }

        .login-form .error-message.show {
            display: flex;
        }

        .login-form .form-footer {
            margin-top: 24px;
            text-align: center;
            color: var(--text-muted);
            font-size: 12px;
            border-top: 1px solid var(--border-color);
            padding-top: 20px;
        }

        .login-form .form-footer a {
            color: var(--accent-light);
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
        }

        .login-form .form-footer a:hover {
            color: var(--text-primary);
            text-decoration: underline;
        }

        .spinner {
            display: none;
            width: 20px;
            height: 20px;
            border: 2px solid rgba(255, 255, 255, 0.15);
            border-top-color: white;
            border-radius: 50%;
            animation: spin 0.6s linear infinite;
        }

        .spinner.active {
            display: inline-block;
        }

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

        /* ============================================================
           RESPONSIVE
           ============================================================ */

        /* Tablet (max-width: 900px) */
        @media (max-width: 900px) {
            .login-container {
                grid-template-columns: 1fr;
                max-width: 480px;
            }

            .login-image {
                padding: 32px 24px;
                min-height: auto;
                border-radius: var(--radius-lg) var(--radius-lg) 0 0;
                border-right: none;
                border-bottom: 1px solid var(--border-color);
            }

            .login-image .brand-name {
                font-size: 28px;
            }

            .login-image .features {
                grid-template-columns: 1fr 1fr 1fr;
                margin-top: 16px;
            }

            .login-form {
                padding: 32px 24px;
                background: var(--bg-card);
            }

            .login-form .form-header h2 {
                font-size: 24px;
            }

            .login-image .brand-decoration {
                display: none;
            }

            .page-bg .bg-image {
                background-position: center 30%;
            }
        }

        /* Mobile (max-width: 640px) */
        @media (max-width: 640px) {
            body {
                padding: 12px;
            }

            .login-image {
                padding: 24px 16px;
            }

            .login-image .brand-name {
                font-size: 24px;
            }

            .login-image .brand-tagline {
                font-size: 13px;
                margin-bottom: 16px;
            }

            .login-image .features {
                display: none !important;
            }

            .login-form {
                padding: 24px 16px;
            }

            .login-form .form-header h2 {
                font-size: 22px;
            }

            .login-form .form-header {
                margin-bottom: 24px;
            }

            .login-form .form-group label {
                font-size: 12px;
            }

            .login-form .form-group input {
                font-size: 13px;
                padding: 10px 14px 10px 38px;
            }

            .login-form .btn-login {
                font-size: 14px;
                padding: 12px;
            }

            .login-image .brand-icon {
                font-size: 40px;
            }

            .page-bg .bg-image {
                background-position: center 20%;
                opacity: 0.2;
            }
        }

        /* Very small screens */
        @media (max-width: 400px) {
            .login-image .brand-name {
                font-size: 20px;
            }

            .login-form .form-header h2 {
                font-size: 20px;
            }

            .login-form {
                padding: 20px 12px;
            }

            .login-image {
                padding: 20px 12px;
            }

            .login-image .brand-icon {
                font-size: 32px;
            }
        }

        @media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
            .page-bg .bg-image {
                background-image: url('https://images.unsplash.com/photo-1432889821006-c6c5b1d7a2e0?w=2560&q=80');
            }
        }