/* تصميم صفحة تسجيل الدخول - هادئ ومريح للعين */

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
    overflow: hidden;
}

body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.login-container {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
    padding: 45px;
    width: 100%;
    max-width: 420px;
    position: relative;
    z-index: 1;
    animation: slideUp 0.5s ease;
}

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

.login-header {
    text-align: center;
    margin-bottom: 35px;
}

.login-header h1 {
    color: #667eea;
    font-size: 30px;
    margin-bottom: 12px;
    font-weight: 700;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.login-header h1 i {
    font-size: 32px;
}

.login-header p {
    color: #6c757d;
    font-size: 15px;
    font-weight: 400;
}

.form-group {
    margin-bottom: 22px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    color: #495057;
    font-weight: 600;
    font-size: 14px;
    letter-spacing: 0.2px;
}

.form-group label i {
    margin-left: 8px;
    color: #667eea;
    font-size: 14px;
}

.form-group input {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid #e9ecef;
    border-radius: 12px;
    font-size: 15px;
    transition: all 0.3s ease;
    background: white;
    color: #495057;
    font-family: inherit;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
    background: #f8f9fa;
}

.btn-login {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 0.3px;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

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

.alert-error {
    background: #ffebee;
    color: #c62828;
    padding: 14px 18px;
    border-radius: 12px;
    margin-bottom: 25px;
    border-right: 4px solid #f44336;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 500;
    animation: shake 0.4s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.alert-error i {
    font-size: 16px;
}

.default-credentials {
    background: linear-gradient(135deg, #f8f9fa 0%, #f0f0f0 100%);
    padding: 18px;
    border-radius: 12px;
    margin-top: 25px;
    font-size: 13px;
    color: #6c757d;
    border: 1px solid #e9ecef;
    line-height: 1.8;
}

.default-credentials strong {
    color: #495057;
    font-weight: 600;
}

@media (max-width: 480px) {
    .login-container {
        padding: 30px 25px;
    }
    
    .login-header h1 {
        font-size: 24px;
    }
}