:root {
            --primary: #2563EB;
            --primary-dark: #1E40AF;
            --primary-light: #DBEAFE;
            --accent: #10B981;
            --gray-900: #1E293B;
            --gray-700: #334155;
            --gray-500: #64748B;
            --border: #E2E8F0;
            --white: #FFFFFF;
            --bg-secondary: #F8FAFC;
            --shadow-xl: 0 20px 40px rgba(15, 23, 42, 0.12);
            --font-display: 'Outfit', system-ui, sans-serif;
            --font-body: 'DM Sans', system-ui, sans-serif;
        }

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

        body {
            font-family: var(--font-body);
            background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--primary-light) 50%, var(--bg-secondary) 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 2rem;
        }

        .login-container {
            max-width: 480px;
            width: 100%;
            background: var(--white);
            border-radius: 24px;
            box-shadow: var(--shadow-xl);
            overflow: hidden;
            animation: slideUp 0.5s ease;
        }

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

        .login-header {
            text-align: center;
            padding: 3rem 2.5rem 2rem;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: white;
        }

        .logo-circle {
            width: 80px;
            height: 80px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(10px);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            font-size: 2.5rem;
            border: 3px solid rgba(255, 255, 255, 0.3);
        }

        .login-title {
            font-family: var(--font-display);
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 0.5rem;
        }

        .login-subtitle {
            font-size: 1rem;
            opacity: 0.9;
        }

        .login-form {
            padding: 2.5rem;
        }

        .form-group {
            margin-bottom: 1.5rem;
        }

        .form-label {
            display: block;
            font-weight: 600;
            color: var(--gray-900);
            margin-bottom: 0.5rem;
            font-size: 0.95rem;
        }

        .input-wrapper {
            position: relative;
        }

        .input-icon {
            position: absolute;
            left: 1rem;
            top: 50%;
            transform: translateY(-50%);
            color: var(--gray-500);
            font-size: 1.125rem;
        }

        .form-input {
            width: 100%;
            padding: 0.875rem 1rem 0.875rem 3rem;
            border: 1.5px solid var(--border);
            border-radius: 12px;
            font-size: 0.95rem;
            font-family: var(--font-body);
            color: var(--gray-900);
            transition: all 0.2s ease;
        }

        .form-input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px var(--primary-light);
        }

        .password-toggle {
            position: absolute;
            right: 1rem;
            top: 50%;
            transform: translateY(-50%);
            background: none;
            border: none;
            color: var(--gray-500);
            cursor: pointer;
            font-size: 1.125rem;
            padding: 0.25rem;
        }

        .password-toggle:hover {
            color: var(--primary);
        }

        .form-options {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 1.5rem;
        }

        .remember-me {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .remember-me input {
            width: 18px;
            height: 18px;
            accent-color: var(--primary);
            cursor: pointer;
        }

        .remember-me label {
            font-size: 0.9375rem;
            color: var(--gray-700);
            cursor: pointer;
        }

        .forgot-link {
            color: var(--primary);
            text-decoration: none;
            font-size: 0.9375rem;
            font-weight: 600;
            transition: color 0.2s ease;
        }

        .forgot-link:hover {
            color: var(--primary-dark);
        }

        .login-btn {
            width: 100%;
            padding: 1rem;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: white;
            border: none;
            border-radius: 12px;
            font-size: 1rem;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.75rem;
        }

        .login-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(37, 99, 235, 0.4);
        }

        .divider {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin: 2rem 0;
        }

        .divider-line {
            flex: 1;
            height: 1px;
            background: var(--border);
        }

        .divider-text {
            color: var(--gray-500);
            font-size: 0.875rem;
            font-weight: 500;
        }

        .social-login {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
        }

        .social-btn {
            padding: 0.875rem;
            border: 1.5px solid var(--border);
            border-radius: 12px;
            background: white;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            font-weight: 600;
            color: var(--gray-700);
            transition: all 0.2s ease;
        }

        .social-btn:hover {
            background: var(--bg-secondary);
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        .signup-link {
            text-align: center;
            margin-top: 2rem;
            padding-top: 2rem;
            border-top: 1px solid var(--border);
            color: var(--gray-700);
            font-size: 0.9375rem;
        }

        .signup-link a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 700;
            transition: color 0.2s ease;
        }

        .signup-link a:hover {
            color: var(--primary-dark);
        }

        .back-home {
            text-align: center;
            margin-top: 1.5rem;
        }

        .back-home a {
            color: var(--gray-500);
            text-decoration: none;
            font-size: 0.9375rem;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            transition: color 0.2s ease;
        }

        .back-home a:hover {
            color: var(--primary);
        }

        .error-message {
            background: #FEE2E2;
            border: 1px solid #EF4444;
            color: #DC2626;
            padding: 0.875rem 1rem;
            border-radius: 12px;
            margin-bottom: 1.5rem;
            display: none;
            align-items: center;
            gap: 0.75rem;
            font-size: 0.9375rem;
        }

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

        @media (max-width: 640px) {
            body {
                padding: 1rem;
            }

            .login-header {
                padding: 2rem 1.5rem 1.5rem;
            }

            .login-form {
                padding: 2rem 1.5rem;
            }

            .social-login {
                grid-template-columns: 1fr;
            }
        }