/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

/* Login container */
.login-container {
    width: 100%;
    max-width: 420px;
}

/* Login box */
.login-box {
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    padding: 48px 40px;
    animation: slideUp 0.6s ease-out;
}

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

/* Header */
.login-header {
    text-align: center;
    margin-bottom: 40px;
}

.logo {
    font-size: 64px;
    margin-bottom: 16px;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.login-header h1 {
    font-size: 24px;
    color: #333;
    font-weight: 600;
    margin-bottom: 8px;
}

.subtitle {
    font-size: 14px;
    color: #999;
    letter-spacing: 1px;
}

/* Form */
.login-form {
    margin-bottom: 32px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 14px;
    color: #666;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input[type="text"],
.form-group input[type="password"] {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #e8e8e8;
    border-radius: 10px;
    font-size: 15px;
    transition: all 0.3s ease;
    outline: none;
}

.form-group input[type="text"]:focus,
.form-group input[type="password"]:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group input[type="text"]::placeholder,
.form-group input[type="password"]::placeholder {
    color: #ccc;
}

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

.remember-me label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 14px;
    color: #666;
}

.remember-me input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-right: 8px;
    cursor: pointer;
    accent-color: #667eea;
}

/* Error message */
.error-message {
    background: #fee;
    border: 1px solid #fcc;
    color: #c33;
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

/* Login button */
.login-button {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.login-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
}

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

.login-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Button loader */
.loader {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

@keyframes spin {
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

/* Footer */
.login-footer {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid #eee;
}

.login-footer p {
    font-size: 13px;
    color: #999;
    margin-bottom: 12px;
}

.demo-accounts {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.account {
    font-size: 13px;
    padding: 8px 16px;
    border-radius: 6px;
    display: inline-block;
}

.account.admin {
    background: #e3f2fd;
    color: #1976d2;
}

.account.user {
    background: #f3e5f5;
    color: #7b1fa2;
}

/* Responsive */
@media (max-width: 480px) {
    .login-box {
        padding: 32px 24px;
    }

    .login-header h1 {
        font-size: 20px;
    }

    .logo {
        font-size: 48px;
    }
}

/* Success state */
.login-success {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.success-content {
    text-align: center;
    color: white;
    animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.success-icon {
    font-size: 80px;
    margin-bottom: 24px;
}

.success-content h2 {
    font-size: 28px;
    margin-bottom: 12px;
}

.success-content p {
    font-size: 16px;
    opacity: 0.9;
}

.role-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    margin-top: 20px;
    font-size: 14px;
}

.role-badge.admin {
    background: rgba(255, 193, 7, 0.3);
}

.role-badge.user {
    background: rgba(76, 175, 80, 0.3);
}