@font-face {
            font-family: 'IRANYekanXVF';
            src: url('/fonts/IRANYekanXVF.woff2') format('woff2'),
                 url('/fonts/IRANYekanXVF.woff') format('woff');
            font-weight: normal;
            font-style: normal;
            font-display: swap;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: IRANYekanXVF, -apple-system, sans-serif;
        }
        
        body {
            background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }
        
        .login-container {
            background: white;
            border-radius: 16px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
            width: 100%;
            max-width: 400px;
            overflow: hidden;
        }
        
        .login-header {
            background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
            color: white;
            padding: 2rem;
            text-align: center;
        }
        
        .logo {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            margin-bottom: 1rem;
        }
        
        .logo-icon {
            width: 50px;
            height: 50px;
            background: white;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #3b82f6;
            font-size: 1.5rem;
        }
        
        .logo-text {
            font-size: 1.5rem;
            font-weight: 700;
        }
        
        .login-form {
            padding: 2rem;
        }
        
        .input-group {
            margin-bottom: 1.5rem;
        }
        
        .input-label {
            display: block;
            margin-bottom: 0.5rem;
            color: #1e293b;
            font-weight: 500;
            font-size: 0.95rem;
        }
        
        .input-field {
            width: 100%;
            padding: 1rem;
            border: 1px solid #e2e8f0;
            border-radius: 10px;
            font-size: 1rem;
            transition: all 0.3s ease;
            background: #f8fafc;
        }
        
        .input-field:focus {
            outline: none;
            border-color: #3b82f6;
            background: white;
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
        }
        
        .login-btn {
            width: 100%;
            background: linear-gradient(135deg, #10b981 0%, #34d399 100%);
            color: white;
            border: none;
            padding: 1rem;
            border-radius: 10px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            margin-top: 1rem;
        }
        
        .login-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(16, 185, 129, 0.3);
        }
        
        .alert {
            padding: 1rem;
            border-radius: 10px;
            margin-bottom: 1.5rem;
            display: none;
        }
        
        .alert-error {
            background: #fee2e2;
            border: 1px solid #fecaca;
            color: #dc2626;
        }
        
        .loading-spinner {
            display: inline-block;
            width: 20px;
            height: 20px;
            border: 2px solid rgba(255, 255, 255, 0.3);
            border-radius: 50%;
            border-top-color: white;
            animation: spin 1s linear infinite;
        }
        
        @keyframes spin {
            to { transform: rotate(360deg); }
        }