/* 
 * SMSI Monitor - 登录页面样式
 */

/* ==================== 登录容器 ==================== */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: var(--bg-page);
}

.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow-lg);
}

/* ==================== 登录头部 ==================== */
.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-logo {
    width: 64px;
    height: 64px;
    background: var(--text-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.login-logo svg {
    width: 36px;
    height: 36px;
    color: var(--bg-card);
}

.login-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.login-subtitle {
    font-size: var(--font-size-md);
    color: var(--text-secondary);
}

/* ==================== 表单样式 ==================== */
.login-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

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

.form-label {
    font-size: var(--font-size-md);
    font-weight: 500;
    color: var(--text-primary);
}

.form-input {
    padding: 12px 16px;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-md);
    color: var(--text-primary);
    transition: all 0.3s;
}

.form-input:focus {
    outline: none;
    border-color: var(--text-primary);
    background: var(--bg-card);
}

.form-input::placeholder {
    color: var(--text-tertiary);
}

.btn-login {
    padding: 12px 24px;
    background: var(--text-primary);
    color: var(--bg-card);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-md);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    margin-top: 8px;
}

.btn-login:hover {
    opacity: 0.9;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-login:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* ==================== 登录底部 ==================== */
.login-footer {
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.login-footer-text {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

/* ==================== 错误提示 ==================== */
.error-message {
    padding: 12px 16px;
    background: rgba(229, 115, 115, 0.1);
    border: 1px solid var(--color-danger);
    border-radius: var(--radius-md);
    color: var(--color-danger);
    font-size: var(--font-size-sm);
    text-align: center;
    margin-bottom: 20px;
}

/* ==================== 加载动画 ==================== */
.loading-spinner {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ==================== 主题切换按钮（登录页） ==================== */
.login-theme-toggle {
    position: fixed;
    top: 20px;
    left: 20px;
    width: 44px;
    height: 44px;
    background: var(--bg-card);
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    z-index: 100;
}

.login-theme-toggle:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md);
}

.login-theme-toggle::before {
    content: '';
    width: 20px;
    height: 20px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236c757d' stroke-width='2'%3E%3Ccircle cx='12' cy='12' r='5'/%3E%3Cline x1='12' y1='1' x2='12' y2='3'/%3E%3Cline x1='12' y1='21' x2='12' y2='23'/%3E%3Cline x1='4.22' y1='4.22' x2='5.64' y2='5.64'/%3E%3Cline x1='18.36' y1='18.36' x2='19.78' y2='19.78'/%3E%3Cline x1='1' y1='12' x2='3' y2='12'/%3E%3Cline x1='21' y1='12' x2='23' y2='12'/%3E%3Cline x1='4.22' y1='19.78' x2='5.64' y2='18.36'/%3E%3Cline x1='18.36' y1='5.64' x2='19.78' y2='4.22'/%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

[data-theme="dark"] .login-theme-toggle::before {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23b0b0b0' stroke-width='2'%3E%3Cpath d='M21 12.79A9 9 0 1 1 11.21 3 7 7 0 0 0 21 12.79z'/%3E%3C/svg%3E");
}

/* ==================== 语言切换按钮（登录页） ==================== */
.login-lang-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 100;
}

/* ==================== 移动端优化 ==================== */
@media (max-width: 768px) {
    .login-card {
        padding: 32px 24px;
        max-width: 100%;
    }

    .login-title {
        font-size: var(--font-size-2xl);
    }

    .login-logo {
        width: 56px;
        height: 56px;
    }

    .login-logo svg {
        width: 30px;
        height: 30px;
    }

    .login-theme-toggle,
    .login-lang-toggle {
        width: 40px;
        height: 40px;
        top: 16px;
    }

    .login-theme-toggle {
        left: 16px;
    }

    .login-lang-toggle {
        right: 16px;
    }
}