/* ============================================================
   MCRES 茶室 - 全局样式
   说明：
     · CSS 变量 + reset + 通用组件
     · 主色：琥珀 #e8a437
     · 组件样式在 components.css
     · 页面样式在 pages.css
   ============================================================ */

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    background: var(--bg-body);
    color: var(--text-primary);
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB",
        "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    min-height: 100vh;
    padding-top: var(--navbar-height);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    display: block;
}

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

input,
select,
textarea {
    font-family: inherit;
}

a {
    text-decoration: none;
    color: inherit;
}

ul,
ol {
    list-style: none;
}

/* ============================================================
   CSS 变量
   ============================================================ */
:root {
    /* ---- 背景 ---- */
    --bg-body: #11161c;
    --bg-card: #1a2028;
    --bg-card-hover: #232b36;
    --bg-elevated: #1e2630;

    /* ---- 边框 ---- */
    --border-light: #2a313b;
    --border-strong: #3b434d;
    --border-accent: rgba(232, 164, 55, 0.25);

    /* ---- 文字 ---- */
    --text-primary: #e8edf2;
    --text-secondary: #b0b8c2;
    --text-muted: #6a7a8a;

    /* ---- 主色（琥珀系）---- */
    --accent: #e8a437;
    --accent-bright: #f5b855;
    --accent-dark: #c8892a;
    --accent-glow: rgba(232, 164, 55, 0.25);
    --tea-brown: #8b6f47;

    /* ---- 话题档位色 ---- */
    --level-counter: #8b949e;
    --level-yajian: #e8a437;
    --level-chatai: #f5b855;
    --level-sanzuo: #8b949e;
    --level-sealed: #e05252;

    /* ---- 语义色 ---- */
    --success: #55d88b;
    --warning: #e67e22;
    --danger: #e74c3c;
    --info: #4A90D9;

    /* ---- 尺寸 ---- */
    --radius: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;
    --navbar-height: 64px;

    /* ---- 阴影 ---- */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
    --shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
    --shadow-accent: 0 8px 24px rgba(232, 164, 55, 0.4);

    /* ---- 过渡 ---- */
    --transition: 0.2s ease;
    --transition-slow: 0.3s ease;
}

/* ============================================================
   背景层
   ============================================================ */
.bg-layer {
    position: fixed;
    inset: 0;
    z-index: -1;
    background: var(--bg-body);
    background-image:
        radial-gradient(circle at 20% 20%, rgba(232, 164, 55, 0.05) 0%, transparent 55%),
        radial-gradient(circle at 80% 80%, rgba(139, 111, 71, 0.06) 0%, transparent 55%);
    pointer-events: none;
}

/* ============================================================
   主内容区
   ============================================================ */
.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 24px 16px 60px;
    min-height: calc(100vh - var(--navbar-height) - 100px);
}

/* ============================================================
   页脚
   ============================================================ */
.footer {
    border-top: 1px solid var(--border-light);
    padding: 24px 16px;
    background: rgba(0, 0, 0, 0.2);
    margin-top: auto;
}

.footer-inner {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 13px;
    color: var(--text-muted);
}

.footer-left {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.footer-brand {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
}

.footer-brand img {
    height: 22px;
}

.footer-brand:hover {
    color: var(--accent-bright);
}

.footer-sep {
    opacity: 0.4;
}

.footer-desc {
    color: var(--text-muted);
}

.footer-links {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
}

.footer-links a {
    color: var(--text-secondary);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--accent-bright);
}

.footer-links .sep {
    color: var(--text-muted);
    opacity: 0.4;
}

.footer-right {
    color: var(--text-muted);
}

/* ============================================================
   通用按钮
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 20px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    background: none;
    color: inherit;
    line-height: 1.5;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

.btn-primary {
    background: var(--accent);
    color: #1a1a1a;
    border-color: var(--accent);
    font-weight: 600;
}

.btn-primary:hover {
    background: var(--accent-bright);
    border-color: var(--accent-bright);
    transform: translateY(-1px);
    box-shadow: var(--shadow-accent);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border-color: var(--border-light);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent);
    transform: translateY(-1px);
}

.btn-ghost {
    color: var(--text-secondary);
}

.btn-ghost:hover {
    color: var(--accent-bright);
    background: rgba(232, 164, 55, 0.08);
}

.btn-danger {
    background: var(--danger);
    color: #fff;
    border-color: var(--danger);
}

.btn-danger:hover {
    filter: brightness(1.15);
}

.btn-sm {
    padding: 5px 12px;
    font-size: 13px;
}

.btn-lg {
    padding: 12px 28px;
    font-size: 16px;
}

/* ============================================================
   卡片
   ============================================================ */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    padding: 20px;
    transition: var(--transition);
}

.card-hover:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-strong);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.card-accent {
    border-color: var(--border-accent);
}

/* ============================================================
   空状态
   ------------------------------------------------------------
   ★ 修复：大图标只作用于直接子元素 <i>
     按钮内的 <i> 不再被污染（原先是后代选择器 .empty-state i，
     会把"发第一帖"按钮里的小图标也变成 48px 块级淡色图标）
   ============================================================ */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state > i {
    font-size: 48px;
    color: var(--accent);
    opacity: 0.3;
    margin-bottom: 16px;
    display: block;
}

.empty-state p {
    font-size: 15px;
    margin-bottom: 16px;
}

.empty-state a.btn {
    margin-top: 8px;
}

/* ============================================================
   表单控件
   ============================================================ */
.form-select,
.form-input,
.form-textarea {
    width: 100%;
    padding: 10px 14px;
    background: rgba(11, 15, 20, 0.6);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    transition: var(--transition);
    outline: none;
}

.form-select {
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23e8a437' stroke-width='3'><polyline points='6 9 12 15 18 9'></polyline></svg>");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
}

.form-select:hover,
.form-input:hover,
.form-textarea:hover {
    border-color: var(--border-strong);
}

.form-select:focus,
.form-input:focus,
.form-textarea:focus {
    border-color: var(--accent);
    background-color: rgba(11, 15, 20, 0.85);
    box-shadow: 0 0 0 3px rgba(232, 164, 55, 0.15);
}

.form-select option {
    background: #11161c;
    color: var(--text-primary);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-muted);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
    line-height: 1.6;
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
    letter-spacing: 0.3px;
}

.form-label .required {
    color: var(--danger);
    margin-left: 3px;
}

.form-field {
    margin-bottom: 18px;
}

/* ============================================================
   徽章
   ============================================================ */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    line-height: 1.6;
    background: rgba(232, 164, 55, 0.12);
    color: var(--accent-bright);
}

.badge-success {
    background: rgba(85, 216, 139, 0.12);
    color: var(--success);
}

.badge-warning {
    background: rgba(230, 126, 34, 0.12);
    color: var(--warning);
}

.badge-danger {
    background: rgba(231, 76, 60, 0.12);
    color: var(--danger);
}

.badge-info {
    background: rgba(74, 144, 217, 0.12);
    color: var(--info);
}

/* ============================================================
   分页
   ============================================================ */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6px;
    margin: 32px 0;
    flex-wrap: wrap;
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 10px;
    border-radius: 6px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
    font-size: 14px;
    transition: var(--transition);
}

.pagination a:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent);
    color: var(--accent-bright);
}

.pagination .active {
    background: var(--accent);
    border-color: var(--accent);
    color: #1a1a1a;
    font-weight: 600;
}

.pagination .disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

.pagination .ellipsis {
    border: none;
    background: none;
    color: var(--text-muted);
}

/* ============================================================
   提示条
   ============================================================ */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    border-left: 3px solid;
    font-size: 14px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 16px;
}

.alert i {
    margin-top: 2px;
    flex-shrink: 0;
}

.alert-info {
    background: rgba(74, 144, 217, 0.08);
    border-color: var(--info);
    color: var(--info);
}

.alert-success {
    background: rgba(85, 216, 139, 0.08);
    border-color: var(--success);
    color: var(--success);
}

.alert-warning {
    background: rgba(230, 126, 34, 0.08);
    border-color: var(--warning);
    color: var(--warning);
}

.alert-danger {
    background: rgba(231, 76, 60, 0.08);
    border-color: var(--danger);
    color: var(--danger);
}

/* ============================================================
   工具类
   ============================================================ */
.text-muted     { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-primary   { color: var(--text-primary); }
.text-accent    { color: var(--accent-bright); }
.text-success   { color: var(--success); }
.text-warning   { color: var(--warning); }
.text-danger    { color: var(--danger); }

.text-center { text-align: center; }
.text-left   { text-align: left; }
.text-right  { text-align: right; }

.fw-500 { font-weight: 500; }
.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }

.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 16px; }
.mt-5 { margin-top: 24px; }

.mb-1 { margin-bottom: 4px; }
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 12px; }
.mb-4 { margin-bottom: 16px; }
.mb-5 { margin-bottom: 24px; }

.flex { display: flex; }
.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}
.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.flex-col {
    display: flex;
    flex-direction: column;
}
.gap-1 { gap: 4px; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }

.hidden { display: none !important; }

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

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

::-webkit-scrollbar-thumb {
    background: var(--border-strong);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-dark);
}

/* ============================================================
   选中文本
   ============================================================ */
::selection {
    background: var(--accent);
    color: #1a1a1a;
}

/* ============================================================
   Toast 轻提示
   ============================================================ */
.mcres-toast-container {
    position: fixed;
    top: 80px;
    right: 24px;
    z-index: 99999;
    display: flex;
    flex-direction: column;
    gap: 10px;
    pointer-events: none;
}

.mcres-toast {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    background: rgba(18, 22, 30, 0.97);
    border: 1px solid var(--border-light);
    border-left: 3px solid var(--accent);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 14px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    pointer-events: auto;
    opacity: 0;
    transform: translateX(20px);
    transition: opacity 0.25s ease, transform 0.25s ease;
    max-width: 360px;
}

.mcres-toast.show {
    opacity: 1;
    transform: translateX(0);
}

.mcres-toast i {
    font-size: 16px;
    flex-shrink: 0;
}

.mcres-toast-info    { border-left-color: var(--info); }
.mcres-toast-info i  { color: var(--info); }

.mcres-toast-success { border-left-color: var(--success); }
.mcres-toast-success i { color: var(--success); }

.mcres-toast-warning { border-left-color: var(--warning); }
.mcres-toast-warning i { color: var(--warning); }

.mcres-toast-error   { border-left-color: var(--danger); }
.mcres-toast-error i { color: var(--danger); }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 900px) {
    :root {
        --navbar-height: 60px;
    }
    .main-content {
        padding: 16px 12px 40px;
    }
    .footer-inner {
        flex-direction: column;
        text-align: center;
        gap: 12px;
    }
    .footer-left,
    .footer-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    :root {
        --navbar-height: 56px;
    }
    .main-content {
        padding: 12px 10px 32px;
    }
    .mcres-toast-container {
        top: 72px;
        right: 12px;
        left: 12px;
    }
    .mcres-toast {
        max-width: none;
    }
}