/* public/assets/css/media/video-to-gif.css */
:root {
    --primary: #6366f1; --secondary: #a855f7; --success: #10b981; --warning: #f59e0b; --danger: #ef4444;
    --bg: #ffffff; --card: #f8fafc; --text-main: #0f172a; --text-sub: #64748b;
    --border: #e2e8f0; --shadow: 0 10px 25px -5px rgba(0,0,0,0.05);
}

.chat-wrapper { 
    width: 100%; max-width: 1100px; margin: 0 auto;
    background: var(--bg); border-radius: 20px; overflow: hidden; 
    border: 1px solid var(--border); box-shadow: var(--shadow);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; color: var(--text-main);
    display: flex; flex-direction: column;
}
.chat-wrapper *, .chat-wrapper *::before, .chat-wrapper *::after { box-sizing: border-box; }

.chat-header { padding: 30px; text-align: center; border-bottom: 1px solid var(--border); flex-shrink: 0; background: linear-gradient(to right, rgba(99,102,241,0.05), rgba(168,85,247,0.05));}
.chat-title { margin: 0 0 12px 0; font-size: 1.8rem; font-weight: 800; color: var(--text-main); }
.chat-subtitle { margin: 0 auto; max-width: 800px; font-size: 0.95rem; color: var(--text-sub); line-height: 1.6; }
.chat-workspace { padding: 30px; flex: 1; display: flex; flex-direction: column; min-height: 400px; position: relative; }

/* =========================================================
   UI 组件样式
   ========================================================= */
.btn { border: none; padding: 10px 20px; border-radius: 10px; font-weight: 700; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; gap: 8px; transition: 0.2s; font-size: 14px; color: white; }
.btn-lg { padding: 14px 28px; font-size: 16px; border-radius: 12px;}
.btn-block { width: 100%; }
.btn-primary { background: linear-gradient(135deg, var(--primary), #4f46e5); box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4); filter: brightness(1.1); }
.btn-secondary { background: #e2e8f0; color: #0f172a; }
.btn-secondary:hover { background: #cbd5e1; }
.btn-success { background: linear-gradient(135deg, var(--success), #059669); box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3); }
.btn-success:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4); filter: brightness(1.1); }

/* Toast */
#toast-container { position: fixed; top: 20px; left: 50%; transform: translateX(-50%); z-index: 100000; pointer-events: none; }
.toast { background: rgba(15,23,42,0.9); color: white; padding: 12px 24px; border-radius: 30px; font-size: 14px; margin-bottom: 10px; box-shadow: 0 10px 30px rgba(0,0,0,0.2); font-weight: bold;}

/* =========================================================
   阶段 1: 上传区
   ========================================================= */
.upload-zone { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; }
.upload-box { 
    width: 100%; max-width: 600px; padding: 60px 40px; text-align: center;
    border: 3px dashed var(--primary); border-radius: 24px; background: rgba(99, 102, 241, 0.03);
    transition: 0.3s; cursor: pointer;
}
.upload-box:hover, .upload-box.dragover { background: rgba(99, 102, 241, 0.08); border-color: #4f46e5; transform: scale(1.02); }
.upload-icon { font-size: 64px; color: var(--primary); margin-bottom: 20px; opacity: 0.8; }
.upload-title { font-size: 1.4rem; font-weight: 800; color: var(--text-main); margin-bottom: 10px; }
.upload-desc { font-size: 0.95rem; color: var(--text-sub); margin-bottom: 30px; }

/* =========================================================
   阶段 2: 编辑器区
   ========================================================= */
.editor-layout { display: flex; gap: 30px; align-items: stretch; }
.preview-panel { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 20px; }
.video-container { width: 100%; background: #000; border-radius: 16px; overflow: hidden; box-shadow: var(--shadow); aspect-ratio: 16/9; display: flex; align-items: center; justify-content: center; }
.video-container video { width: 100%; height: 100%; object-fit: contain; }

.trim-controls { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 20px; }
.trim-labels { display: flex; justify-content: space-between; align-items: center; margin-bottom: 15px; font-weight: bold; color: var(--text-main); font-size: 14px;}
.time-display { font-family: 'Consolas', monospace; color: var(--primary); background: rgba(99,102,241,0.1); padding: 4px 12px; border-radius: 12px; }

/* 双滑块核心 CSS */
.range-slider-wrapper { position: relative; height: 30px; margin-bottom: 15px; }
.slider-track { position: absolute; top: 12px; left: 0; right: 0; height: 6px; background: #e2e8f0; border-radius: 3px; z-index: 1; }
.slider-fill { position: absolute; top: 0; bottom: 0; background: var(--primary); border-radius: 3px; }
.range-slider-wrapper input[type=range] {
    position: absolute; left: 0; top: 0; width: 100%; height: 30px; margin: 0;
    -webkit-appearance: none; background: transparent; z-index: 2; pointer-events: none;
}
.range-slider-wrapper input[type=range]::-webkit-slider-thumb {
    pointer-events: auto; -webkit-appearance: none; width: 20px; height: 20px;
    border-radius: 50%; background: white; border: 3px solid var(--primary);
    cursor: pointer; box-shadow: 0 2px 6px rgba(0,0,0,0.2); margin-top: 5px;
}

.help-text { font-size: 12px; color: var(--text-sub); margin: 0; }

.settings-panel { width: 300px; flex-shrink: 0; background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 24px; display: flex; flex-direction: column; gap: 20px; }
.settings-header { font-size: 16px; font-weight: 800; color: var(--text-main); border-bottom: 1px solid var(--border); padding-bottom: 15px; display: flex; align-items: center; gap: 8px;}
.setting-group { display: flex; flex-direction: column; gap: 8px; }
.setting-group label { font-size: 13px; font-weight: bold; color: var(--text-sub); }
.custom-select { width: 100%; padding: 12px; border-radius: 10px; border: 1px solid var(--border); background: var(--bg); color: var(--text-main); font-size: 14px; font-weight: 600; outline: none; transition: 0.2s; cursor: pointer; }
.custom-select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(99,102,241,0.1); }

/* 转换进度遮罩 */
.progress-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: rgba(255,255,255,0.9); backdrop-filter: blur(5px); z-index: 50; display: flex; align-items: center; justify-content: center; }
.progress-box { background: var(--bg); border: 1px solid var(--border); padding: 40px; border-radius: 24px; text-align: center; box-shadow: 0 20px 40px rgba(0,0,0,0.1); width: 80%; max-width: 400px; }
.spinner-icon { font-size: 40px; color: var(--primary); margin-bottom: 15px; }
.progress-title { font-size: 18px; font-weight: bold; color: var(--text-main); margin-bottom: 20px; }
.progress-bar-container { width: 100%; height: 10px; background: #e2e8f0; border-radius: 5px; overflow: hidden; margin-bottom: 10px; }
.progress-bar-fill { height: 100%; background: var(--success); transition: width 0.1s linear; }
.progress-percent { font-size: 14px; font-weight: bold; color: var(--text-sub); font-family: monospace; }


/* =========================================================
   阶段 3: 结果区
   ========================================================= */
.result-zone { display: flex; flex-direction: column; align-items: center; gap: 30px; text-align: center; }
.result-header h2 { font-size: 2rem; font-weight: 800; color: var(--text-main); margin: 0 0 10px 0; }
.file-size-display { font-size: 16px; color: var(--text-sub); font-family: monospace; background: var(--card); border: 1px solid var(--border); padding: 6px 16px; border-radius: 20px; display: inline-block; }
.gif-preview-box { width: 100%; max-width: 600px; border-radius: 16px; overflow: hidden; box-shadow: var(--shadow); background: repeating-conic-gradient(#f1f5f9 0%, #f1f5f9 25%, #e2e8f0 0%, #e2e8f0 50%); background-size: 20px 20px; border: 1px solid var(--border); display: flex; align-items: center; justify-content: center; }
.gif-preview-box img { max-width: 100%; max-height: 500px; display: block; }
.result-actions { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap;}

/* =========================================================
   Bento Grid
   ========================================================= */
.chat-features-bento { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; padding: 0 30px 30px 30px; }
.bento-card { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 24px; transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s; display: flex; flex-direction: column; gap: 10px; }
.bento-card:hover { transform: translateY(-4px); box-shadow: 0 12px 30px -10px rgba(0,0,0,0.08); border-color: var(--primary); }
.bento-header { display: flex; align-items: center; gap: 12px; }
.bento-icon { width: 36px; height: 36px; background: rgba(99, 102, 241, 0.1); color: var(--primary); border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 16px; flex-shrink: 0; }
.bento-card h3 { margin: 0; font-size: 1.05rem; font-weight: 800; color: var(--text-main); line-height: 1.2; }
.bento-card p { margin: 0; font-size: 0.85rem; color: var(--text-sub); line-height: 1.6; }

/* 响应式 */
@media (max-width: 850px) {
    .editor-layout { flex-direction: column; }
    .settings-panel { width: 100%; }
    .chat-features-bento { grid-template-columns: 1fr; padding: 0 15px 20px 15px; gap: 12px; }
    .chat-workspace { padding: 15px; }
    .upload-box { padding: 40px 20px; }
}

/* 暗黑模式支持 */
[data-theme="dark"]:root { 
    --bg: #0f172a; --card: #1e293b; --text-main: #f8fafc; --text-sub: #94a3b8; --border: #334155; 
}
[data-theme="dark"] .chat-header { background: linear-gradient(to right, rgba(99,102,241,0.1), rgba(168,85,247,0.1)); }
[data-theme="dark"] .btn-secondary { background: #334155; color: #f8fafc; }
[data-theme="dark"] .btn-secondary:hover { background: #475569; }
[data-theme="dark"] .progress-overlay { background: rgba(15,23,42,0.9); }
[data-theme="dark"] .gif-preview-box { background: repeating-conic-gradient(#1e293b 0%, #1e293b 25%, #0f172a 0%, #0f172a 50%); background-size: 20px 20px;}