/* ============ 公共基础样式 ============ */
:root {
    --mk-primary: #2f7cf6;
    --mk-primary-dark: #1f66d6;
    --mk-primary-light: #eaf2ff;
    --mk-bg: #f2f4f8;
    --mk-panel: #ffffff;
    --mk-border: #e6e9f0;
    --mk-text: #22262e;
    --mk-text-sub: #7a8291;
    --mk-text-light: #a5acb8;
    --mk-danger: #e8453c;
    --mk-success: #23a35a;
    --mk-warning: #f0a020;
    --mk-radius: 10px;
    --mk-radius-lg: 16px;
    --mk-shadow: 0 6px 24px rgba(24, 39, 75, 0.12);
    --mk-shadow-sm: 0 2px 8px rgba(24, 39, 75, 0.08);
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    font-size: 14px;
    color: var(--mk-text);
    background: var(--mk-bg);
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--mk-primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

button {
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
    outline: none;
}

/* 滚动条 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-thumb {
    background: #cfd5e0;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #b6bdcb;
}

::-webkit-scrollbar-track {
    background: transparent;
}

/* 按钮 */
.mk-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    height: 36px;
    padding: 0 16px;
    border: 1px solid var(--mk-border);
    border-radius: 8px;
    background: #fff;
    color: var(--mk-text);
    transition: all .15s;
    white-space: nowrap;
}

.mk-btn:hover {
    border-color: #cdd6e6;
    background: #fafbfe;
}

.mk-btn-primary {
    background: linear-gradient(135deg, #3f8bff, #2f7cf6);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 3px 10px rgba(47, 124, 246, .3);
}

.mk-btn-primary:hover {
    background: linear-gradient(135deg, #4a93ff, #276fe0);
}

.mk-btn-danger {
    color: var(--mk-danger);
    border-color: #f4c7c4;
}

.mk-btn-danger:hover {
    background: #fff5f5;
}

.mk-btn-sm {
    height: 30px;
    padding: 0 12px;
    font-size: 13px;
}

.mk-btn:disabled {
    opacity: .55;
    cursor: not-allowed;
}

/* 表单 */
.mk-input {
    width: 100%;
    height: 38px;
    padding: 0 12px;
    border: 1px solid var(--mk-border);
    border-radius: 8px;
    background: #fff;
    transition: border-color .15s, box-shadow .15s;
}

.mk-input:focus {
    border-color: var(--mk-primary);
    box-shadow: 0 0 0 3px rgba(47, 124, 246, .12);
}

textarea.mk-input {
    height: auto;
    padding: 10px 12px;
    resize: vertical;
    line-height: 1.6;
}

.mk-field {
    margin-bottom: 14px;
}

.mk-label {
    display: block;
    margin-bottom: 6px;
    font-size: 13px;
    color: var(--mk-text-sub);
}

.mk-hint {
    margin-top: 4px;
    font-size: 12px;
    color: var(--mk-text-light);
}

/* 卡片 */
.mk-card {
    background: var(--mk-panel);
    border-radius: var(--mk-radius);
    box-shadow: var(--mk-shadow-sm);
}

/* 轻提示 */
.mk-toast {
    position: fixed;
    left: 50%;
    top: 24px;
    z-index: 99999;
    max-width: 80vw;
    padding: 10px 18px;
    border-radius: 8px;
    background: rgba(38, 44, 56, .94);
    color: #fff;
    font-size: 13px;
    line-height: 1.5;
    box-shadow: 0 6px 20px rgba(0, 0, 0, .18);
    opacity: 0;
    transform: translate(-50%, -12px);
    transition: all .24s ease;
    pointer-events: none;
    white-space: pre-wrap;
    text-align: center;
}

.mk-toast-show {
    opacity: 1;
    transform: translate(-50%, 0);
}

.mk-toast-success {
    background: rgba(35, 163, 90, .96);
}

.mk-toast-error {
    background: rgba(232, 69, 60, .96);
}

/* 空状态 */
.mk-empty {
    padding: 40px 16px;
    text-align: center;
    color: var(--mk-text-light);
    font-size: 13px;
}

/* 加载中的小圆点 */
.mk-loading::after {
    content: '';
    display: inline-block;
    width: 12px;
    height: 12px;
    margin-left: 6px;
    border: 2px solid rgba(255, 255, 255, .4);
    border-top-color: #fff;
    border-radius: 50%;
    animation: mk-spin .7s linear infinite;
    vertical-align: -2px;
}

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