/* public/assets/css/video/m3u-generator.css */

.m3g-wrapper { padding: 32px; border-radius: var(--radius-lg); }
.m3g-header { text-align: center; margin-bottom: 32px; }
.m3g-title { font-size: 2rem; font-weight: 800; color: var(--text-main); margin-bottom: 12px; letter-spacing: -0.5px; }
.m3g-subtitle { font-size: 1.05rem; color: var(--text-muted); max-width: 700px; margin: 0 auto; line-height: 1.6; }

/* 布局 */
.m3g-global-settings { margin-bottom: 24px; max-width: 1200px; margin-left: auto; margin-right: auto; }

/* 🌟 核心布局：Grid 列拉伸，底部通栏 */
.m3g-workspace { 
    display: grid; 
    grid-template-columns: 420px 1fr; 
    gap: 24px; 
    max-width: 1200px; 
    margin: 0 auto; 
    align-items: stretch; /* 让左右两侧的卡片高度严格对齐 */
}

.m3g-panel { background: var(--bg-surface); padding: 24px; border: 1px solid var(--border-color); border-radius: 16px; box-shadow: 0 4px 20px rgba(0,0,0,0.03); }
.m3g-panel-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px dashed var(--border-color); }
.m3g-panel-title { font-size: 1.1rem; font-weight: 700; color: var(--text-main); }
.m3g-badge { background: rgba(var(--primary-rgb), 0.1); color: var(--primary-color); padding: 2px 10px; border-radius: 12px; font-weight: bold; font-size: 0.85rem; }

/* Tabs */
.m3g-tabs { display: flex; flex-wrap: wrap; gap: 8px; background: var(--bg-body); padding: 6px; border-radius: 12px; margin-bottom: 20px; border: 1px solid var(--border-color); }
.m3g-tab { flex: 1; min-width: 100px; padding: 10px 8px; text-align: center; border-radius: 8px; border: none; background: transparent; cursor: pointer; font-size: 0.95rem; font-weight: 600; color: var(--text-muted); transition: all 0.2s ease; }
.m3g-tab:hover { color: var(--text-main); }
.m3g-tab.active { background: var(--bg-surface); color: var(--primary-color); box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
.m3g-tab-content { display: none; animation: m3gFadeIn 0.3s ease; }
.m3g-tab-content.active { display: block; }
@keyframes m3gFadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }

/* 表单控件 */
.m3g-form-group { margin-bottom: 16px; }
.m3g-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.m3g-label { display: block; font-weight: 600; color: var(--text-main); font-size: 0.9rem; margin-bottom: 8px; }
.m3g-input, .m3g-textarea { width: 100%; padding: 12px 14px; border: 1.5px solid var(--border-color); border-radius: 10px; font-size: 0.95rem; background: var(--bg-body); color: var(--text-main); outline: none; transition: all 0.2s; box-sizing: border-box; }
.m3g-textarea { min-height: 220px; resize: vertical; font-family: monospace; line-height: 1.5; }
.m3g-input:focus, .m3g-textarea:focus { border-color: var(--primary-color); box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.15); }
.m3g-desc-text { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 12px; line-height: 1.5; }

/* 按钮 */
.m3g-btn-group { display: flex; gap: 12px; margin-top: 20px; }
.m3g-btn-primary { flex: 1; background: var(--primary-color); color: #fff; border: none; padding: 12px; border-radius: 10px; font-size: 1rem; font-weight: bold; cursor: pointer; transition: 0.3s; }
.m3g-btn-primary:hover { transform: translateY(-2px); filter: brightness(1.1); box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.3); }
.m3g-btn-outline { flex: 1; background: var(--bg-body); color: var(--text-main); border: 1px solid var(--border-color); border-radius: 10px; font-size: 1rem; font-weight: bold; cursor: pointer; transition: 0.2s; }
.m3g-btn-outline:hover { background: rgba(var(--primary-rgb), 0.05); color: var(--primary-color); border-color: var(--primary-color); }

/* 小型按钮组 (包含全新的 Danger 红色按钮样式) */
.m3g-btn-group-sm { display: flex; gap: 8px; align-items: center; }
.m3g-btn-sm { background: var(--bg-body); color: var(--text-main); border: 1px solid var(--border-color); padding: 6px 16px; border-radius: 8px; font-size: 0.85rem; font-weight: 600; cursor: pointer; transition: 0.2s; }
.m3g-btn-sm:hover { background: #e2e8f0; border-color: #cbd5e1; }
.m3g-btn-sm-primary { background: var(--primary-color); color: #fff; border-color: var(--primary-color); }
.m3g-btn-sm-primary:hover { background: #2563eb; }
.m3g-btn-sm-danger { background: #fee2e2; color: #ef4444; border-color: #fca5a5; }
.m3g-btn-sm-danger:hover { background: #fecaca; color: #b91c1c; border-color: #f87171; }


/* 🌟 核心修改：弹性拉伸的频道列表，撑满父级高度 */
.m3g-list-section { display: flex; flex-direction: column; }
.m3g-channel-list { flex: 1 1 0; min-height: 350px; overflow-y: auto; padding-right: 4px; display: flex; flex-direction: column; gap: 10px; }
.m3g-channel-list::-webkit-scrollbar { width: 6px; }
.m3g-channel-list::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 4px; }
.m3g-empty-state { text-align: center; padding: 40px 20px; color: var(--text-muted); font-size: 0.95rem; background: rgba(0,0,0,0.02); border-radius: 12px; border: 1px dashed var(--border-color); }

/* 单个频道卡片 */
.m3g-card { display: flex; align-items: center; justify-content: space-between; background: var(--bg-body); border: 1px solid var(--border-color); border-radius: 10px; padding: 12px 16px; transition: 0.2s; }
.m3g-card:hover { border-color: #cbd5e1; box-shadow: 0 2px 8px rgba(0,0,0,0.05); }
.m3g-card-info { flex: 1; min-width: 0; display: flex; align-items: center; gap: 12px; }
.m3g-card-logo { width: 36px; height: 36px; border-radius: 6px; background: rgba(0,0,0,0.05); object-fit: cover; flex-shrink: 0; border: 1px solid rgba(0,0,0,0.05); }
.m3g-card-text { flex: 1; min-width: 0; }
.m3g-card-text h5 { margin: 0 0 4px 0; font-size: 0.95rem; color: var(--text-main); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.m3g-card-meta { margin: 0; font-size: 0.75rem; color: var(--text-muted); display: flex; gap: 8px; }
.m3g-card-meta span { background: rgba(0,0,0,0.05); padding: 2px 6px; border-radius: 4px; }

.m3g-card-actions { display: flex; gap: 6px; flex-shrink: 0; }
.m3g-action-btn { width: 28px; height: 28px; border-radius: 6px; border: none; background: rgba(0,0,0,0.04); color: var(--text-muted); display: flex; align-items: center; justify-content: center; cursor: pointer; transition: 0.2s; }
.m3g-action-btn:hover { background: #e2e8f0; color: var(--text-main); }
.m3g-action-edit:hover { background: rgba(var(--primary-rgb), 0.1); color: var(--primary-color); }
.m3g-action-del:hover { background: #fee2e2; color: #ef4444; }


/* 🌟 核心修改：通栏霸气代码预览区 */
.m3g-preview-section { grid-column: 1 / -1; }
.m3g-code-preview { width: 100%; height: 320px; padding: 16px; background: #1e293b; color: #a5b4fc; border: 1px solid #334155; border-radius: 12px; font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 0.9rem; resize: vertical; outline: none; line-height: 1.6; box-sizing: border-box; box-shadow: inset 0 4px 10px rgba(0,0,0,0.2); }

/* SEO Blocks */
.m3g-info-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; max-width: 1200px; margin: 0 auto; }
.m3g-info-card { background: var(--bg-surface); padding: 24px; border-radius: 16px; border: 1px solid var(--border-color); }
.m3g-info-card h3 { color: var(--text-main); font-size: 1.15rem; margin-bottom: 16px; }
.m3g-list { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 12px; }
.m3g-list li { font-size: 0.95rem; color: var(--text-muted); line-height: 1.5; }

@media (max-width: 900px) {
    .m3g-workspace, .m3g-info-grid { grid-template-columns: 1fr; }
    .m3g-preview-section { grid-column: 1; }
    .m3g-code-preview { height: 250px; }
}

/* 深色模式适配 */
[data-theme="dark"] .m3g-panel, [data-theme="dark"] .m3g-info-card { background: #1e293b; border-color: #334155; }
[data-theme="dark"] .m3g-tabs { background: #0f172a; border-color: #334155; }
[data-theme="dark"] .m3g-tab.active { background: #1e293b; }
[data-theme="dark"] .m3g-input, [data-theme="dark"] .m3g-textarea { background: #0f172a; border-color: #475569; color: #f8fafc; }
[data-theme="dark"] .m3g-empty-state { background: rgba(255,255,255,0.02); border-color: #334155; }
[data-theme="dark"] .m3g-card { background: #0f172a; border-color: #334155; }
[data-theme="dark"] .m3g-card-meta span { background: rgba(255,255,255,0.05); }
[data-theme="dark"] .m3g-action-btn { background: rgba(255,255,255,0.05); color: #94a3b8; }
[data-theme="dark"] .m3g-action-btn:hover { background: #334155; color: #fff; }
[data-theme="dark"] .m3g-btn-sm { background: #0f172a; border-color: #475569; color: #f8fafc; }
[data-theme="dark"] .m3g-btn-sm:hover { background: #1e293b; }
[data-theme="dark"] .m3g-btn-sm-primary { background: var(--primary-color); border-color: var(--primary-color); }
[data-theme="dark"] .m3g-btn-sm-danger { background: rgba(239,68,68,0.1); color: #f87171; border-color: rgba(239,68,68,0.3); }
[data-theme="dark"] .m3g-btn-sm-danger:hover { background: rgba(239,68,68,0.2); }
[data-theme="dark"] .m3g-code-preview { background: #0f172a; border-color: #334155; color: #c7d2fe; }