/* ================= M3 Design Tokens ================= */
:root {
    --md-sys-color-primary: #0B57D0;
    --md-sys-color-on-primary: #FFFFFF;
    --md-sys-color-primary-container: #D3E3FD;
    --md-sys-color-background: #F0F2F5;
    --md-sys-color-surface: #FFFFFF;
    --md-sys-color-surface-container: #F8F9FA;
    --md-sys-color-outline: #747775;
    --md-sys-color-outline-variant: #C4C7C5;
    --md-sys-color-on-surface: #1F1F1F;
    --md-sys-color-on-surface-variant: #444746;
    --radius-small: 8px;
    --radius-medium: 12px;
    --radius-large: 16px;
    --radius-full: 999px;
    --shadow-level-1: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-level-2: 0 4px 6px rgba(0,0,0,0.1);
}

body {
    font-family: 'Roboto', -apple-system, sans-serif;
    background-color: var(--md-sys-color-background);
    color: var(--md-sys-color-on-surface);
    margin: 0; padding: 0;
    line-height: 1.5;
    min-height: 100vh;
    display: flex; flex-direction: column;

    padding-top: 64px;
}

.hidden { display: none !important; } /* 强制隐藏，修复 Show More */

/* ================= Top Bar ================= */
.top-bar {
    background: var(--md-sys-color-surface);
    border-bottom: 1px solid rgba(0,0,0,0.08);
    height: 64px; padding: 0 24px;
    display: flex; justify-content: space-between; align-items: center;
    /* 🚀 修改开始：从 sticky 改为 fixed */
    position: fixed; 
    top: 0;
    left: 0;
    width: 100%; /* 强制撑满宽度 */
    box-sizing: border-box; /* 防止 padding 把宽度撑爆 */
    z-index: 1000; /* 保证层级最高，不被其他内容遮挡 */
    /* 🚀 修改结束 */
    /* position: sticky; top: 0; z-index: 100; */
}
.branding { display: flex; align-items: center; gap: 12px; }
.app-logo-small { width: 32px; height: 32px; }
.app-title { font-size: 1.25rem; font-weight: 500; color: var(--md-sys-color-on-surface); }
.top-actions { display: flex; align-items: center; gap: 12px; }
.divider-vertical { width: 1px; height: 24px; background-color: var(--md-sys-color-outline-variant); margin: 0 4px; }

/* Buttons */
.gh-btn {
    display: flex; align-items: center; gap: 8px; padding: 6px 16px;
    border-radius: 99px; font-size: 0.9rem; font-weight: 600;
    text-decoration: none; height: 36px; box-sizing: border-box; transition: all 0.2s;
}
.issue-btn { background: #FFF; color: #4B5563; border: 1px solid #D1D5DB; }
.issue-btn:hover { background: #F9FAFB; border-color: #9CA3AF; color: #1F2937; }
.star-btn { background: #1F2937; color: #FFF; border: 1px solid #1F2937; }
.star-btn:hover { background: #111827; }
.gh-btn svg { fill: currentColor; }

.icon-btn {
    width: 40px; height: 40px; border-radius: var(--radius-full);
    display: flex; align-items: center; justify-content: center;
    border: none; background: transparent; cursor: pointer; color: #444746; transition: all 0.2s;
}
.icon-btn:hover { background: rgba(0,0,0,0.08); }
.icon-btn svg { width: 24px; height: 24px; fill: currentColor; }

/* ================= Hero ================= */
.hero-section {
    text-align: center; padding: 40px 20px 30px;
    background-color: var(--md-sys-color-background);
}
.hero-branding { display: flex; align-items: center; justify-content: center; gap: 16px; margin-bottom: 12px; }
.hero-logo {
    width: 56px; height: 56px;
    filter: drop-shadow(0 4px 6px rgba(11, 87, 208, 0.15));
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.hero-logo:hover { transform: scale(1.1) rotate(10deg); }
.hero-section h1 {
    font-size: 2.5rem; font-weight: 800; margin: 0;
    background: linear-gradient(135deg, #0B57D0 0%, #1e40af 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; line-height: 1.1;
}
.app-intro { font-size: 1rem; color: #666; margin: 0; }

/* ================= Main Layout (宽屏优化) ================= */


/* 1. 主容器：固定高度，填满屏幕剩余空间 */
.main-container {
    max-width: 100%; /* 全宽 */
    margin: 0;
    padding: 24px;
    display: grid;
    /* 左侧 400px，右侧自适应 */
    grid-template-columns: 400px 1fr; 
    gap: 24px;
    /* 关键：计算高度 = 屏幕高度 - 顶部导航栏(64px) - 底部留白 */
    height: calc(100vh - 64px); 
    box-sizing: border-box;
    overflow: hidden; /* 防止外层滚动 */
    overflow-y: auto
}


.card {
    background: var(--md-sys-color-surface);
    border-radius: var(--radius-large);
    box-shadow: var(--shadow-level-1);
    border: 1px solid rgba(0,0,0,0.02);
    overflow: hidden;
}


/* 2. 左侧搜索卡片：撑满高度 */
.search-card {
    display: flex;
    flex-direction: column;
    height: 100%; /* 撑满 grid 这一格的高度 */
    background: var(--md-sys-color-surface);
    border-radius: var(--radius-large);
    box-shadow: var(--shadow-level-1);
    overflow: hidden; /* 内部滚动 */
}

/* 左侧列表：占据剩余空间并滚动 */
.results-list {
    flex: 1;
    overflow-y: auto; /* 关键：只有列表区域滚动 */
    padding: 0;
}



/* 修改 .search-card 的高度，让它自动撑满 */
.search-card {
    display: flex;
    flex-direction: column;
    /* 🚀 修改：不再固定高度，而是由 Grid 布局拉伸，撑满左侧高度 */
    /* height: 100%;  */
    min-height: 650px; /* 保底高度 */
}

/* 2. 移除 "Search DBLP" 标题，直接用 padding */
.search-header-area { padding: 20px; border-bottom: 1px solid #F0F0F0; }

.search-bar-wrapper {
    display: flex; align-items: center; height: 48px;
    background: var(--md-sys-color-surface-container);
    border-radius: 24px; padding: 0 16px; transition: all 0.2s;
}
.search-bar-wrapper:focus-within { background: #FFF; box-shadow: 0 2px 8px rgba(0,0,0,0.15); }
.search-icon-leading { display: flex; margin-right: 12px; color: #666; }
.search-icon-leading svg { width: 20px; height: 20px; fill: currentColor; }
.search-input-m3 { flex: 1; border: none; background: transparent; outline: none; font-size: 0.95rem; }
.search-btn-trailing { background: none; border: none; cursor: pointer; color: var(--md-sys-color-primary); padding: 4px; display: flex; }
.search-btn-trailing svg { width: 24px; height: 24px; fill: currentColor; }

.results-list { flex: 1; overflow-y: auto; padding: 0; }
.empty-state { padding: 40px 20px; text-align: center; color: #888; font-size: 0.9rem; }
.result-item {
    padding: 16px 20px; border-bottom: 1px solid #F0F0F0; cursor: pointer; transition: background 0.1s;
}
.result-item:hover { background: #F8FAFC; }
.result-item.active { background: #E8F0FE; border-left: 4px solid var(--md-sys-color-primary); }
.result-title { font-weight: 500; font-size: 0.9rem; color: #1F1F1F; margin-bottom: 6px; line-height: 1.4; }
.result-meta { font-size: 0.8rem; color: #666; }


/* 3. 右侧工作区：撑满高度 */
.editor-workspace {
    display: flex;
    flex-direction: column;
    gap: 16px;
    height: 100%;
    overflow: hidden; /* 防止整体滚动 */
}



/* 4. 右侧卡片 (Input/Output)：弹性高度 */
.editor-card {
    display: flex;
    flex-direction: column;
    flex: 1; /* 上下平分高度 */
    min-height: 0; /* 关键：允许 flex 子项缩小 */
    background: var(--md-sys-color-surface);
    border-radius: var(--radius-large);
    box-shadow: var(--shadow-level-1);
    overflow: hidden;
}
.card-header-simple { padding: 16px 24px; border-bottom: 1px solid #F0F0F0; }
.card-header-simple h3 { margin: 0; font-size: 1.1rem; font-weight: 500; color: var(--md-sys-color-on-surface); }



/* 文本框：字体调小，允许滚动 */
.m3-textarea {
    width: 100%;
    height: 100%;
    padding: 16px;
    border: none;
    resize: none;
    outline: none;
    font-family: 'Roboto Mono', monospace; 
    font-size: 0.85rem; /* 字体调小 */
    line-height: 1.5;
    color: var(--md-sys-color-on-surface);
    background: transparent;
    box-sizing: border-box;
    overflow-y: auto; /* 文本框内部滚动 */
}

.actions-bar { display: flex; justify-content: center; gap: 16px; margin: 4px 0; }
.btn-filled {
    display: flex; align-items: center; gap: 8px;
    background: var(--md-sys-color-primary); color: #FFF;
    border: none; padding: 10px 40px; border-radius: 99px;
    font-weight: 500; cursor: pointer; box-shadow: var(--shadow-level-1); transition: all 0.2s;
}
.btn-filled:hover { box-shadow: var(--shadow-level-2); filter: brightness(1.1); transform: translateY(-1px); }
.btn-outlined {
    display: flex; align-items: center; gap: 8px;
    background: transparent; color: var(--md-sys-color-primary);
    border: 1px solid var(--md-sys-color-outline);
    padding: 10px 40px; border-radius: 99px;
    font-weight: 500; cursor: pointer; transition: all 0.2s;
}
.btn-outlined:hover { background: var(--md-sys-color-primary-container); }

.output-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 12px 24px; border-bottom: 1px solid #F0F0F0;
}
.output-header h3 { margin: 0; font-size: 1.1rem; font-weight: 500; }
.m3-tabs { display: flex; gap: 16px; }
.tab-btn {
    background: none; border: none; padding: 6px 0;
    font-size: 0.9rem; font-weight: 500; color: #666;
    cursor: pointer; transition: color 0.2s; position: relative;
}
.tab-btn:hover { color: var(--md-sys-color-primary); }
.tab-btn.active { color: var(--md-sys-color-primary); border-bottom: 2px solid var(--md-sys-color-primary); }

/* ================= Settings Drawer ================= */
.drawer-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.4); z-index: 1100; opacity: 0; visibility: hidden; transition: opacity 0.3s;
}
.drawer-overlay.open { opacity: 1; visibility: visible; }

.settings-drawer {
    position: fixed; top: 0; right: -420px; width: 420px; height: 100vh;
    background: #FFF; z-index: 1101; box-shadow: -4px 0 16px rgba(0,0,0,0.1);
    transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex; flex-direction: column;
}
.settings-drawer.open { right: 0; }

.drawer-header {
    padding: 20px 24px; border-bottom: 1px solid #F0F0F0;
    display: flex; justify-content: space-between; align-items: center;
}
.drawer-header h2 { font-size: 1.25rem; margin: 0; }
.drawer-content { padding: 24px; overflow-y: auto; flex: 1; }

/* 5. Reset 按钮显眼化 */
.btn-reset-outlined {
    border: 1px solid #D32F2F; color: #D32F2F; background: transparent;
    padding: 6px 16px; border-radius: 99px; font-size: 0.85rem; font-weight: 500; cursor: pointer; transition: all 0.2s;
    margin-right: auto; /* 靠左显示，不和关闭按钮挤 */
}
.btn-reset-outlined:hover { background: #FFEBEE; }

.settings-group { margin-bottom: 32px; }
.group-title {
    font-size: 0.875rem; color: var(--md-sys-color-primary);
    font-weight: 700; text-transform: uppercase; margin: 0 0 16px 0; letter-spacing: 0.5px;
}
.divider { height: 1px; background-color: #E0E0E0; margin: 24px 0; }

/* Checkbox Grid */
.checkbox-list { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
#fields-secondary { margin-top: 12px; }
.checkbox-row {
    display: flex; align-items: center; gap: 10px; font-size: 0.9rem;
    cursor: pointer; color: #333;
}
input[type="checkbox"] { accent-color: var(--md-sys-color-primary); width: 18px; height: 18px; cursor: pointer; }

/* Show more btn */
.small-btn { margin-top: 12px; font-size: 0.85rem; display: flex; align-items: center; gap: 4px; color: var(--md-sys-color-primary); background: none; border: none; cursor: pointer; font-weight: 500; }
.arrow-icon { width: 18px; height: 18px; fill: currentColor; transition: transform 0.3s; }
.arrow-icon.rotate { transform: rotate(180deg); }

/* Input Styles */
.input-wrapper { position: relative; margin-top: 12px; }
.m3-input {
    width: 100%; padding: 12px; border: 1px solid #C4C7C5; border-radius: 8px;
    font-size: 0.9rem; background: #F8F9FA; box-sizing: border-box; transition: all 0.2s;
}
.m3-input:focus { border-color: var(--md-sys-color-primary); background: #FFF; outline: none; }
.m3-input:disabled { opacity: 0.6; cursor: not-allowed; background: #EEE; }
.helper-text { font-size: 0.75rem; color: #666; margin-top: 8px; padding-left: 4px; }

/* 4. Venue Mappings: 纯按钮风格 (去除圆点) */
.venue-mode-selector {
    display: flex; gap: 0; margin-bottom: 16px; background: #F0F2F5; 
    padding: 4px; border-radius: 8px; width: 100%; box-sizing: border-box;
}
.mode-chip { flex: 1; position: relative; cursor: pointer; }
.mode-chip input[type="radio"] { display: none; }
.chip-label {
    display: block; padding: 8px 0; border-radius: 6px; font-size: 0.85rem; font-weight: 500;
    color: #555; transition: all 0.2s; text-align: center;
}
.mode-chip input:checked + .chip-label {
    background-color: white; color: var(--md-sys-color-primary);
    box-shadow: 0 1px 2px rgba(0,0,0,0.1); font-weight: 600;
}

/* Code Editor */
.code-editor-wrapper { position: relative; }
textarea.code-area {
    font-family: 'Roboto Mono', monospace; font-size: 0.85rem; line-height: 1.6;
    white-space: pre; overflow-x: auto; background-color: #F8F9FA; color: #333;
    border: 1px solid #C4C7C5; border-radius: 8px; padding: 12px; min-height: 200px;
    width: 100%; box-sizing: border-box;
}
textarea.code-area:focus { border-color: var(--md-sys-color-primary); background: #FFF; outline: 2px solid var(--md-sys-color-primary-container); }

.icon-btn-ghost {
    position: absolute; top: 8px; right: 8px; background: rgba(0,0,0,0.05); border: none;
    width: 28px; height: 28px; border-radius: 4px; cursor: pointer;
    display: flex; align-items: center; justify-content: center; z-index: 10;
}
.code-editor-wrapper.fullscreen {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.6); z-index: 300;
    display: flex; align-items: center; justify-content: center; padding: 40px; box-sizing: border-box;
}
.code-editor-wrapper.fullscreen textarea.code-area { width: 90%; height: 90%; background: #FFF; }

/* Toast */
.toast {
    position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px);
    background: #323232; color: #FFF; padding: 12px 24px; border-radius: 99px; opacity: 0; pointer-events: none; transition: 0.3s; z-index: 400;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* Modal Styles */
.modal-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.5); z-index: 500;
    display: flex; align-items: center; justify-content: center;
    opacity: 0; visibility: hidden; transition: all 0.2s;
}
.modal-overlay.show { opacity: 1; visibility: visible; }

.modal-card {
    background: #FFF; width: 90%; max-width: 500px;
    border-radius: var(--radius-large);
    box-shadow: var(--shadow-level-2);
    overflow: hidden; max-height: 80vh; display: flex; flex-direction: column;
}

.modal-header {
    padding: 16px 24px; border-bottom: 1px solid #F0F0F0;
    display: flex; justify-content: space-between; align-items: center;
}
.modal-header h3 { margin: 0; font-size: 1.1rem; color: #D32F2F; }

.modal-content {
    padding: 24px; overflow-y: auto;
}

.warning-item {
    padding: 12px; background: #FFEBEE; color: #B71C1C;
    border-radius: 8px; margin-bottom: 8px; font-size: 0.9rem;
    border-left: 4px solid #D32F2F;
}
.warning-item:last-child { margin-bottom: 0; }

/* Mobile */
@media (max-width: 900px) {
    .main-container { grid-template-columns: 1fr; padding: 0 16px; }
    .search-card { height: auto; max-height: 400px; }
    .settings-drawer { width: 100%; right: -100%; }
    .gh-btn span { display: none; }
}