:root {
            --primary: #4361ee;
            --primary-dark: #3a56d4;
            --secondary: #3f37c9;
            --accent: #4895ef;
            --success: #4cc9f0;
            --light: #f8f9fa;
            --dark: #212529;
            --card-bg: #f8f6f6;
            --text: #333333;
            --text-light: #6c757d;
            --border: #e9ecef;
            --input-bg: #ffffff;
        }

        [data-theme="dark"] {
            --card-bg: #1f2937;
            --text: #e2e8f0;
            --text-light: #94a3b8;
            --border: #334155;
            --input-bg: #374151;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, sans-serif;
            color: var(--text);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #f0f2f5 0%, #e6e9f0 100%);
            padding: 20px;
        }

        [data-theme="dark"] body {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
        }

        .login-container {
            background: var(--card-bg);
            border-radius: 20px;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
            width: 100%;
            max-width: 440px;
            padding: 40px 35px;
            transition: all 0.3s ease;
            border: 1px solid var(--border);
        }

        .logo-container {
            text-align: center;
            margin-bottom: 25px;
        }

        .logo-text {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
        }

        .logo-subtext {
            font-size: 14px;
            color: var(--text-light);
            margin-top: 5px;
        }

        .login-header {
            text-align: center;
            margin-bottom: 30px;
        }

        .login-header h2 {
            font-size: 24px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text);
        }

        .login-header p {
            color: var(--text-light);
            font-size: 15px;
        }

        .input-group {
            position: relative;
            margin-bottom: 20px;
        }

        .input-group i {
            position: absolute;
            left: 18px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-light);
            z-index: 2;
            font-size: 18px;
        }

        .input-group input {
            width: 100%;
            padding: 16px 20px 16px 50px;
            border: 1px solid var(--border);
            background: var(--input-bg);
            border-radius: 12px;
            font-size: 16px;
            color: var(--text);
            transition: all 0.3s;
        }

        .input-group input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.2);
        }

        .password-toggle {
            position: absolute;
            right: 18px;
            top: 50%;
            transform: translateY(-50%);
            cursor: pointer;
            color: var(--text-light);
            background: none;
            border: none;
            font-size: 18px;
        }

        .remember-forgot {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 25px;
            font-size: 14px;
        }

        .remember-me {
            display: flex;
            align-items: center;
        }

        .remember-me input {
            margin-right: 8px;
            accent-color: var(--primary);
            width: 16px;
            height: 16px;
        }

        .forgot-password {
            color: var(--primary);
            text-decoration: none;
            transition: all 0.2s;
            font-weight: 500;
        }

        .forgot-password:hover {
            text-decoration: underline;
        }

        .login-btn {
            width: 100%;
            padding: 16px;
            background: var(--primary);
            color: white;
            border: none;
            border-radius: 12px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            margin-bottom: 20px;
            box-shadow: 0 4px 6px rgba(67, 97, 238, 0.2);
        }

        .login-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 7px 14px rgba(67, 97, 238, 0.3);
        }

        .login-error {
            text-align: center;
            color: #e53e3e;
            margin-bottom: 20px;
            font-size: 14px;
            min-height: 20px;
            font-weight: 500;
        }

        .divider {
            display: flex;
            align-items: center;
            text-align: center;
            color: var(--text-light);
            margin: 25px 0;
            font-size: 14px;
        }

        .divider::before,
        .divider::after {
            content: '';
            flex: 1;
            border-bottom: 1px solid var(--border);
        }

        .divider::before {
            margin-right: 10px;
        }

        .divider::after {
            margin-left: 10px;
        }

        .app-download {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-bottom: 10px;
        }

        .app-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 12px 20px;
            background: var(--primary);
            color: white;
            text-decoration: none;
            border-radius: 10px;
            transition: all 0.3s;
            font-weight: 500;
            flex: 1;
            max-width: 160px;
        }

        .app-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(67, 97, 238, 0.3);
        }

        .app-btn i {
            margin-right: 8px;
            font-size: 18px;
        }

        .theme-toggle {
            position: fixed;
            top: 20px;
            right: 20px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            width: 45px;
            height: 45px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s;
            z-index: 10;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }

        .theme-toggle:hover {
            transform: rotate(30deg);
        }

        @media (max-width: 576px) {
            .login-container {
                padding: 30px 25px;
                width: 95%;
            }
            
            .logo-text {
                font-size: 28px;
            }
            
            .login-header h2 {
                font-size: 22px;
            }
            
            .remember-forgot {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            
            .app-download {
                flex-direction: column;
                align-items: center;
            }
            
            .app-btn {
                max-width: 100%;
            }
            
            .theme-toggle {
                top: 15px;
                right: 15px;
                width: 40px;
                height: 40px;
            }
        }