/* Login Page Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    background: linear-gradient(135deg, #0a0e1a 0%, #1a1f35 50%, #0d1225 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #e0e0e0;
}

.login-container {
    width: 100%;
    max-width: 440px;
    padding: 20px;
}

.login-card {
    background: rgba(30, 35, 55, 0.9);
    border: 1px solid rgba(100, 120, 200, 0.15);
    border-radius: 16px;
    padding: 40px 36px;
    backdrop-filter: blur(20px);
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5);
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-logo {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #7c8bdb;
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
}

.login-logo svg {
    color: #7c8bdb;
}

.login-header h1 {
    font-size: 22px;
    font-weight: 700;
    color: #f0f0f0;
    margin-bottom: 8px;
}

.login-subtitle {
    font-size: 14px;
    color: #8892b0;
    line-height: 1.5;
}

/* Form */
.login-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-label {
    font-size: 13px;
    font-weight: 600;
    color: #c0c8e0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.input-wrap {
    position: relative;
}

.input-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: #5a6390;
    pointer-events: none;
}

.form-input {
    width: 100%;
    padding: 14px 14px 14px 42px;
    background: rgba(20, 24, 42, 0.8);
    border: 1px solid rgba(100, 120, 200, 0.2);
    border-radius: 10px;
    color: #e0e0e0;
    font-size: 15px;
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    transition: all 0.2s ease;
    outline: none;
}

.form-input:focus {
    border-color: #7c8bdb;
    box-shadow: 0 0 0 3px rgba(124, 139, 219, 0.15);
    background: rgba(24, 28, 50, 0.9);
}

.form-input::placeholder {
    color: #4a5580;
    font-family: inherit;
}

/* Login Button */
.btn-login {
    padding: 14px 24px;
    background: linear-gradient(135deg, #5a6bd1 0%, #7c8bdb 100%);
    border: none;
    border-radius: 10px;
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-login:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 25px rgba(90, 107, 209, 0.3);
}

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

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

.btn-loading {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-loading svg {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Error */
.login-error {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: rgba(255, 70, 70, 0.1);
    border: 1px solid rgba(255, 70, 70, 0.25);
    border-radius: 10px;
    color: #ff6b6b;
    font-size: 14px;
    margin-top: 16px;
}

.login-error svg {
    flex-shrink: 0;
}

/* Tips */
.login-tips {
    margin-top: 28px;
    padding: 16px;
    background: rgba(124, 139, 219, 0.06);
    border: 1px solid rgba(124, 139, 219, 0.12);
    border-radius: 10px;
}

.tip-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
    color: #8892b0;
    font-size: 13px;
}

.tip-header svg {
    color: #7c8bdb;
}

.login-tips ul {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.login-tips li {
    font-size: 13px;
    color: #8892b0;
    padding-left: 14px;
    position: relative;
    line-height: 1.5;
}

.login-tips li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: #7c8bdb;
}

.login-tips strong {
    color: #c0c8e0;
}

/* Responsive */
@media (max-width: 480px) {
    .login-card {
        padding: 28px 24px;
    }
}