/* ============================================
   旅行规划助手 - 自然有机风主题
   温暖大地色 + 有机圆角 + 轻量阴影
   ============================================ */

:root {
    /* 色板（Natural Organic） */
    --bg-page: #f3ede5;
    --bg-panel: #ffffff;
    --bg-card: #faf6f1;
    --bg-card-soft: #f6efe4;
    --bg-muted: #eee6da;

    --text-primary: #292524;   /* stone-800 */
    --text-secondary: #57534e; /* stone-600 */
    --text-muted: #a8a29e;     /* stone-400 */

    --border-color: #e7e5e4;  /* stone-200 */
    --border-strong: #d6d3d1; /* stone-300 */

    --accent: #7d9a72;
    --accent-strong: #607d56;
    --accent-soft: #e7f0e3;

    --success-color: #6c9b71;
    --warning-color: #b88958;
    --error-color: #b95e56;

    /* 间距 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;

    /* 形状 */
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-card: 2rem;
    --radius-pill: 999px;

    /* 动效 */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
}

/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-page);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow: hidden;
}

h1,
h2,
h3,
h4,
.logo-text,
.progress-section h3,
.map-card h3,
.map-details-card h3 {
    font-family: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', serif;
}

/* 应用容器 */
.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* ============ 侧边栏 ============ */
.sidebar {
    width: 286px;
    background: var(--bg-card);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: var(--spacing-lg);
    box-shadow: 0 1px 2px rgba(41, 37, 36, 0.08);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--spacing-lg);
}

.logo-icon {
    font-size: 28px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.logo-image {
    width: 28px;
    height: 28px;
    object-fit: contain;
}

.logo-text {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: var(--text-primary);
}

.is-hidden-debug-ui {
    display: none;
}

/* 进度区域 */
.progress-section {
    flex: 1;
}

.progress-section h3 {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.steps-container {
    display: flex;
    flex-direction: column;
    gap: 0;
    position: relative;
    padding-left: 14px;
}

.steps-container::before {
    content: '';
    position: absolute;
    top: 22px;
    bottom: 22px;
    left: 29px;
    width: 2px;
    background: var(--border-color);
    z-index: 0;
}

.step {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0 var(--spacing-sm) 24px;
    border-radius: var(--radius-pill);
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
    position: relative;
    margin-left: -14px;
}

.step-indicator {
    width: 30px;
    height: 30px;
    border-radius: var(--radius-pill);
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    position: relative;
    z-index: 1;
    transition: all var(--transition-normal);
}

.step-label {
    font-size: 14px;
    color: var(--text-secondary);
}

.step.active {
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
}

.step.active .step-indicator {
    background: var(--accent-soft);
    border-color: #c9d7c3;
    color: var(--accent-strong);
    box-shadow: 0 0 0 2px rgba(201, 215, 195, 0.55);
}

.step.active .step-label {
    color: var(--text-primary);
    font-weight: 600;
}

.step.completed .step-indicator {
    background: var(--success-color);
    border-color: var(--success-color);
    color: #ffffff;
}

.step.completed .step-label {
    color: #4f6f53;
}

.session-info {
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    flex: 1;
    overflow: hidden;
}

.session-info h3 {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.recent-sessions-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
    overflow-y: auto;
    flex: 1;
    min-height: 0;
}

.session-item {
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px solid transparent;
}

.session-item:hover {
    background: var(--bg-card-soft);
    color: var(--text-primary);
}

.session-item.active {
    background: var(--bg-panel);
    border-color: var(--border-color);
    color: var(--accent-strong);
    font-weight: 500;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

.session-item-date {
    font-size: 11px;
    color: var(--text-muted);
}

.view-more-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 12px;
    cursor: pointer;
    padding: 4px 0;
    text-align: left;
}

.view-more-btn:hover {
    color: var(--accent);
    text-decoration: underline;
}

.current-session-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

.session-id {
    font-size: 11px;
    color: var(--text-muted);
}

.btn-sm {
    padding: 0 12px;
    font-size: 12px;
    height: 28px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

/* 窄栏模式下隐藏会话列表 */
body:not(.sidebar-open) .sidebar:not(:hover) .recent-sessions-list,
body:not(.sidebar-open) .sidebar:not(:hover) .view-more-btn,
body:not(.sidebar-open) .sidebar:not(:hover) .session-info h3 {
    display: none;
}

@media (max-width: 768px) {
    .recent-sessions-list,
    .view-more-btn,
    .session-info h3 {
        display: none;
    }

    body.sidebar-open .recent-sessions-list,
    body.sidebar-open .view-more-btn,
    body.sidebar-open .session-info h3 {
        display: block;
    }
}

/* 模态框样式 */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(2px);
    animation: fadeIn 0.2s ease;
}

.modal-content {
    background: var(--bg-page);
    width: 90%;
    max-width: 400px;
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
    display: flex;
    flex-direction: column;
    max-height: 80vh;
    animation: scaleIn 0.2s ease;
}

@keyframes scaleIn {
    from { transform: scale(0.95); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.modal-header {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-panel);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.modal-header h3 {
    margin: 0;
    font-size: 16px;
}

.close-btn {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: var(--text-muted);
}

.close-btn:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: var(--spacing-md);
    overflow-y: auto;
    flex: 1;
}

.modal-hint {
    font-size: 12px;
    color: var(--text-muted);
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.modal-session-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.modal-session-item {
    background: var(--bg-panel);
    padding: 12px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: move; /* 拖动光标 */
    user-select: none;
    transition: transform 0.1s;
}

.modal-session-item:active {
    cursor: grabbing;
}

.modal-session-item.dragging {
    opacity: 0.5;
    background: var(--bg-card-soft);
}

.modal-session-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    pointer-events: none; /* 让点击穿透到父容器或按钮 */
}

.modal-session-title {
    font-weight: 500;
    font-size: 14px;
}

.modal-session-meta {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 2px;
}

.session-actions {
    display: flex;
    gap: 8px;
}

.btn-icon-only {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    padding: 4px;
    border-radius: 4px;
}

.btn-icon-only:hover {
    background: var(--bg-muted);
    color: var(--text-primary);
}

.btn-delete:hover {
    color: var(--error-color);
    background: #fee2e2;
}

.modal-footer {
    padding: var(--spacing-md);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: center;
    background: var(--bg-panel);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.btn-danger {
    color: var(--error-color);
    background: transparent;
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    border-radius: var(--radius-pill);
    font-size: 13px;
    cursor: pointer;
}

.btn-danger:hover {
    background: #fef2f2;
    border-color: #fca5a5;
}

/* 统一按钮基础 */
.btn-secondary,
.btn-confirm,
.map-link-btn {
    padding: 12px 24px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--border-color);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: background-color var(--transition-normal), color var(--transition-normal), border-color var(--transition-normal), transform var(--transition-fast);
}

.btn-secondary {
    background: var(--bg-panel);
    color: var(--text-secondary);
}

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

.btn-secondary:focus-visible,
.btn-confirm:focus-visible,
#message-input:focus-visible,
.btn-send:focus-visible,
.map-link-btn:focus-visible {
    outline: none;
    box-shadow: 0 0 0 2px #d6d3d1;
}

/* ============ 主内容区 ============ */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: var(--spacing-lg);
    gap: var(--spacing-md);
    max-height: 100vh;
    min-width: 0;
    overflow: hidden;
}

.chat-container {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding-right: var(--spacing-sm);
}

.chat-container::-webkit-scrollbar {
    width: 8px;
}

.chat-container::-webkit-scrollbar-track {
    background: transparent;
}

.chat-container::-webkit-scrollbar-thumb {
    background: #d6d3d1;
    border-radius: 999px;
}

.messages {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

/* 消息 */
.message {
    max-width: 82%;
    padding: 14px 20px;
    border-radius: var(--radius-card);
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-primary);
    animation: messageIn 0.22s ease-out;
    position: relative;
}

@keyframes messageIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.user {
    align-self: flex-end;
    background: var(--accent);
    border-color: var(--accent-strong);
    color: #ffffff;
}

.message.assistant {
    align-self: flex-start;
}

.message.system {
    align-self: center;
    background: #fffdf9;
    text-align: center;
    font-size: 14px;
}

.message.error {
    align-self: center;
    background: #fff2f0;
    border-color: #edc5c1;
    color: var(--error-color);
}

.message.thinking {
    align-self: flex-start;
    background: var(--bg-card-soft);
    border-style: dashed;
    color: var(--text-secondary);
}

.message.thinking::after {
    content: '';
    display: inline-block;
    width: 12px;
    animation: dots 1.5s infinite;
}

@keyframes dots {
    0%,
    20% {
        content: '.';
    }

    40% {
        content: '..';
    }

    60%,
    100% {
        content: '...';
    }
}

.message.streaming .message-content::after {
    content: '▋';
    display: inline;
    animation: blink 0.7s infinite;
    color: var(--accent-strong);
}

@keyframes blink {
    0%,
    50% {
        opacity: 1;
    }

    51%,
    100% {
        opacity: 0;
    }
}

.message-content {
    white-space: normal;
    word-break: break-word;
    overflow-x: auto;
}

.message-content p {
    margin-bottom: var(--spacing-sm);
}

.message-content p:last-child {
    margin-bottom: 0;
}

/* Markdown 渲染样式 */
.message-content h1,
.message-content h2,
.message-content h3,
.message-content h4 {
    margin: var(--spacing-md) 0 var(--spacing-sm) 0;
    color: var(--text-primary);
    font-weight: 700;
}

.message-content h1 {
    font-size: 1.8em;
}

.message-content h2 {
    font-size: 1.55em;
}

.message-content h3 {
    font-size: 1.25em;
}

.message-content h4 {
    font-size: 1em;
}

.message-content ul,
.message-content ol {
    margin: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
}

.message-content li {
    margin-bottom: 4px;
}

.message-content code {
    background: #f1e9de;
    border: 1px solid #e5d9ca;
    padding: 2px 6px;
    border-radius: 8px;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.9em;
    color: #5a4330;
}

.message-content pre {
    background: #f6efe5;
    border: 1px solid var(--border-color);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: var(--spacing-sm) 0;
}

.message-content pre code {
    background: transparent;
    border: none;
    padding: 0;
}

.message-content blockquote {
    border-left: 3px solid #d0c4b5;
    padding-left: var(--spacing-md);
    margin: var(--spacing-sm) 0;
    color: var(--text-secondary);
}

.message-content hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: var(--spacing-md) 0;
}

.message-content strong {
    color: var(--text-primary);
}

.message-content a {
    color: #6f8b63;
    text-decoration: underline;
}

/* 音频播放器 */
.audio-player {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-card);
    padding: var(--spacing-md);
}

.audio-player-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.audio-label {
    font-size: 14px;
    color: var(--text-secondary);
}

audio {
    flex: 1;
    height: 36px;
}

/* 确认按钮 */
.confirmation-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    padding: var(--spacing-md);
    background: var(--bg-card);
    border-radius: var(--radius-card);
    border: 1px solid var(--border-color);
}

.btn-confirm {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.btn-satisfied {
    background: var(--accent);
    border-color: var(--accent-strong);
    color: #ffffff;
}

.btn-satisfied:hover {
    background: var(--accent-strong);
    border-color: var(--accent-strong);
}

.btn-unsatisfied {
    background: var(--bg-panel);
    color: var(--text-secondary);
}

.btn-unsatisfied:hover {
    background: var(--bg-card-soft);
    color: var(--text-primary);
    border-color: var(--border-strong);
}

.btn-icon {
    font-size: 16px;
}

.shortcut-hint {
    font-size: 12px;
}

.btn-satisfied .shortcut-hint {
    color: rgba(255, 255, 255, 0.85);
}

.btn-unsatisfied .shortcut-hint {
    color: var(--text-muted);
}


.input-wrapper {
    display: flex;
    align-items: flex-end; /* Aligns to bottom, so height difference grows upwards */
    gap: var(--spacing-md);
    min-height: 50px; /* Stabilize height */
}

#message-input {
    flex: 1;
    min-width: 0;
    background: #ffffff;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: var(--radius-pill);
    font-size: 15px;
    font-family: inherit;
    resize: none;
    max-height: 120px;
    padding: 12px 20px;
    min-height: 50px; /* Ensure default matches record btn */
    transition: all var(--transition-normal);
}

#message-input:focus {
    outline: none;
    border-color: #b8b1a6;
    box-shadow: 0 0 0 2px #e7e5e4;
}

#message-input::placeholder {
    color: var(--text-muted);
}

.btn-send {
    width: 46px;
    height: 46px; /* Keep consistent, maybe center it vertically if container is taller? */
    border: 1px solid var(--accent-strong);
    border-radius: var(--radius-pill);
    background: var(--accent);
    color: #ffffff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-normal), transform var(--transition-fast);
    flex-shrink: 0;
}

.btn-send:hover {
    background: var(--accent-strong);
}

.btn-send.is-stop {
    border-color: var(--error-color);
    background: var(--error-color);
}

.btn-send.is-stop:hover {
    background: #a24f48;
}

.btn-send:active {
    transform: scale(0.97);
}

.btn-send svg {
    width: 20px;
    height: 20px;
}

/* ============ 语音/文字切换按钮 ============ */
.voice-toggle-btn {
    width: 42px;
    height: 42px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-pill);
    background: var(--bg-panel);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background-color var(--transition-normal), color var(--transition-normal),
                border-color var(--transition-normal), transform var(--transition-fast);
}

.voice-toggle-btn svg {
    width: 20px;
    height: 20px;
}

.voice-toggle-btn:hover {
    background: var(--bg-card-soft);
    border-color: var(--border-strong);
    color: var(--text-primary);
}

.voice-toggle-btn:active {
    transform: scale(0.94);
}

.voice-toggle-btn.is-voice-mode {
    background: var(--accent-soft);
    border-color: #c9d7c3;
    color: var(--accent-strong);
}

.voice-toggle-btn:focus-visible {
    outline: none;
    box-shadow: 0 0 0 2px #d6d3d1;
}

/* ============ 按住说话按钮 ============ */
.voice-record-btn {
    flex: 1;
    height: 50px; /* Match textarea default height */
    border: 1px solid var(--border-color);
    border-radius: var(--radius-pill);
    background: var(--bg-card-soft);
    color: var(--text-secondary);
    font-size: 15px;
    font-family: inherit;
    font-weight: 500;
    letter-spacing: 0.5px;
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none;
    touch-action: none;
    transition: background-color var(--transition-normal), border-color var(--transition-normal),
                color var(--transition-normal), transform var(--transition-fast);
}

.voice-record-btn:hover {
    background: var(--bg-muted);
    border-color: var(--border-strong);
}

.voice-record-btn:active,
.voice-record-btn.is-recording {
    background: #ef4444;
    border-color: #dc2626;
    color: #ffffff;
    transform: scale(0.98);
}

.voice-record-btn.is-transcribing {
    background: var(--success-color);
    border-color: #4f8a54;
    color: #ffffff;
    cursor: wait;
    animation: record-btn-pulse 1.5s ease-in-out infinite;
}

/* ============ 录音悬浮指示器 ============ */
.recording-indicator {
    position: absolute;
    left: var(--spacing-md);
    bottom: calc(100% + 8px);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(41, 37, 36, 0.90);
    color: #f9fafb;
    padding: 8px 16px;
    border-radius: var(--radius-pill);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    font-size: 13px;
    opacity: 0;
    pointer-events: none;
    transform: translateY(6px);
    transition: opacity 0.2s ease, transform 0.2s ease;
    z-index: 10;
}

.recording-indicator.show {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.recording-wave {
    display: inline-flex;
    align-items: flex-end;
    gap: 3px;
    height: 16px;
}

.recording-wave span {
    width: 3px;
    border-radius: 2px;
    background: #f87171;
    animation: wave 0.9s ease-in-out infinite;
}

.recording-wave span:nth-child(1) { height: 6px; animation-delay: 0s; }
.recording-wave span:nth-child(2) { height: 14px; animation-delay: 0.12s; }
.recording-wave span:nth-child(3) { height: 9px; animation-delay: 0.24s; }
.recording-wave span:nth-child(4) { height: 11px; animation-delay: 0.36s; }

.recording-text {
    font-size: 12px;
    color: #fca5a5;
}

.recording-timer {
    font-size: 12px;
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.03em;
    color: #e5e7eb;
}

@keyframes record-btn-pulse {
    0%, 100% { opacity: 1; }
    50%      { opacity: 0.7; }
}

@keyframes wave {
    0%, 100% { transform: scaleY(0.5); opacity: 0.65; }
    50%      { transform: scaleY(1);   opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
    .voice-record-btn.is-transcribing { animation: none; }
    .recording-wave span { animation: none; }
}

/* 输入容器需要相对定位（供录音指示器绝对定位） */
.input-container {
    position: relative;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-card);
    padding: var(--spacing-md);
}

.input-hint {
    font-size: 11px;
    color: var(--text-muted);
    text-align: center;
    margin-top: var(--spacing-sm);
}

/* ============ 加载动画与辅助 ============ */
.loading-dots {
    display: inline-flex;
    gap: 4px;
}

.loading-dots span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    animation: bounce 1.4s infinite ease-in-out both;
}

.loading-dots span:nth-child(1) {
    animation-delay: -0.32s;
}

.loading-dots span:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes bounce {
    0%,
    80%,
    100% {
        transform: scale(0.35);
    }

    40% {
        transform: scale(1);
    }
}

.message-time {
    font-size: 10px;
    color: var(--text-muted);
    text-align: right;
    margin-top: 4px;
    opacity: 0.85;
}

.copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-pill);
    width: 26px;
    height: 26px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-muted);
    opacity: 0;
    transition: all var(--transition-fast);
}

.message:hover .copy-btn {
    opacity: 1;
}

.copy-btn:hover {
    color: var(--text-primary);
    border-color: var(--border-strong);
}

.input-footer {
    display: flex;
    justify-content: space-between;
    padding: 0 var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.input-footer-end {
    justify-content: flex-end;
}

.char-count {
    font-size: 11px;
    color: var(--text-muted);
    transition: color var(--transition-normal);
}

.char-count.warning {
    color: var(--warning-color);
}

.char-count.limit {
    color: var(--error-color);
}

.skeleton {
    background: #e8dfd1;
    animation: skeletonPulse 1.2s ease-in-out infinite alternate;
    border-radius: var(--radius-pill);
}

.skeleton-text {
    height: 1em;
    margin-bottom: 8px;
    width: 100%;
}

.skeleton-text:last-child,
.skeleton-short {
    width: 60%;
}

@keyframes skeletonPulse {
    from {
        opacity: 0.65;
    }

    to {
        opacity: 1;
    }
}

.message-content.folded {
    max-height: 300px;
    overflow: hidden;
}

.expand-btn {
    display: block;
    width: 100%;
    border: 1px solid var(--border-color);
    background: var(--bg-panel);
    color: var(--text-secondary);
    padding: 8px 12px;
    margin-top: 8px;
    cursor: pointer;
    border-radius: var(--radius-pill);
    font-size: 12px;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

.expand-btn:hover {
    background: var(--bg-card-soft);
    color: var(--text-primary);
}

/* ============ 侧边栏控件/调试 ============ */
.sidebar-close-btn,
.sidebar-toggle-btn {
    border: 1px solid var(--border-color);
    background: var(--bg-panel);
    color: var(--text-secondary);
    border-radius: var(--radius-pill);
    width: 32px;
    height: 32px;
    cursor: pointer;
}

.sidebar-close-btn {
    margin-left: auto;
    display: none;
}

.sidebar-toggle-btn {
    display: none;
}

.sidebar-backdrop {
    display: none;
}

.debug-section {
    margin-top: 20px;
    border-top: 1px solid var(--border-color);
    padding-top: 10px;
}

.debug-step-select {
    width: 100%;
    margin-bottom: 5px;
    padding: 8px 10px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--border-color);
    background: var(--bg-panel);
    color: var(--text-secondary);
}

.debug-jump-btn {
    width: 100%;
    background: #d49a57;
    border-color: #cc8b40;
    color: #ffffff;
}

.confirmation-buttons.is-hidden {
    display: none;
}

.thinking-status {
    margin-top: 10px;
    font-style: italic;
    font-size: 0.9em;
    color: var(--text-secondary);
    opacity: 0.9;
}

/* ============ 页面级加载覆盖层 ============ */
#loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(41, 37, 36, 0.45);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    color: #ffffff;
    font-size: 1.2rem;
    flex-direction: column;
}

#loading-overlay .spinner {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-pill);
    background: rgba(255, 255, 255, 0.9);
    animation: breathe 1.1s ease-in-out infinite alternate;
    margin-bottom: 20px;
}

@keyframes breathe {
    from {
        transform: scale(0.82);
        opacity: 0.7;
    }

    to {
        transform: scale(1);
        opacity: 1;
    }
}

/* ============ 地图展示区 ============ */
.map-container,
.map-details-container {
    margin-top: 20px;
    animation: fadeInUp 0.35s ease;
}

.map-card,
.map-details-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 20px;
    border-radius: var(--radius-card);
    box-shadow: 0 1px 2px rgba(41, 37, 36, 0.07);
}

.map-card {
    text-align: center;
}

.map-card h3,
.map-details-card h3 {
    margin-top: 0;
    margin-bottom: 12px;
    color: var(--text-primary);
    font-size: 24px;
}

.map-iframe {
    width: 100%;
    height: 500px;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    margin: 15px 0;
    background: #ffffff;
}

@media (max-width: 768px) {
    .map-iframe {
        height: 78vh;
        min-height: 620px;
        border-radius: 14px;
    }
}

.map-link-btn {
    display: inline-block;
    margin-top: 10px;
    background: var(--accent);
    border-color: var(--accent-strong);
    color: #ffffff;
}

.map-link-btn:hover {
    background: var(--accent-strong);
}

.map-raw-pre {
    white-space: pre-wrap;
    word-wrap: break-word;
    background: #f6efe5;
    border: 1px solid var(--border-color);
    padding: 15px;
    border-radius: var(--radius-md);
}

.map-progress-message {
    max-width: 640px;
}

.map-progress-title {
    font-weight: 600;
    margin-bottom: 10px;
}

.map-progress-bar {
    width: 100%;
    height: 10px;
    border-radius: var(--radius-pill);
    background: #efe6da;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.map-progress-fill {
    width: 0%;
    height: 100%;
    background: #9ab18e;
    transition: width 0.35s ease;
}

.map-progress-footer {
    margin-top: 8px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--text-secondary);
    font-size: 12px;
}

.map-progress-percent {
    color: var(--accent-strong);
    font-weight: 600;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============ 响应式 ============ */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        width: 64px;
        z-index: 1200;
        padding: var(--spacing-md) var(--spacing-xs);
        overflow: hidden;
        transition: width var(--transition-normal), padding var(--transition-normal);
    }

    .logo {
        justify-content: center;
        gap: 0;
        padding-bottom: var(--spacing-md);
        margin-bottom: var(--spacing-md);
    }

    .logo-text,
    .progress-section h3,
    .step-label,
    .session-info {
        display: none;
    }

    .steps-container {
        padding-left: 0;
    }

    .steps-container::before {
        left: 31px;
    }

    .step {
        justify-content: center;
        padding: var(--spacing-sm) 0;
        margin-left: 0;
    }

    body.sidebar-open .sidebar {
        width: min(82vw, 320px);
        padding: var(--spacing-lg);
        overflow-x: visible;
    }

    body.sidebar-open .logo {
        justify-content: flex-start;
        gap: var(--spacing-md);
        padding-bottom: var(--spacing-lg);
        margin-bottom: var(--spacing-lg);
    }

    body.sidebar-open .logo-text,
    body.sidebar-open .progress-section h3,
    body.sidebar-open .step-label,
    body.sidebar-open .session-info {
        display: block;
    }

    body.sidebar-open .steps-container {
        padding-left: 14px;
    }

    body.sidebar-open .steps-container::before {
        left: 29px;
    }

    body.sidebar-open .step {
        justify-content: flex-start;
        padding: var(--spacing-sm) 0 var(--spacing-sm) 24px;
        margin-left: -14px;
    }

    .sidebar-close-btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .main-content {
        padding: var(--spacing-md);
        padding-left: calc(64px + var(--spacing-sm));
    }

    .message {
        max-width: 92%;
    }

    .confirmation-buttons {
        flex-direction: column;
    }

    .btn-confirm {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .main-content {
        gap: 12px;
    }

    .message {
        max-width: 96%;
        padding: 12px 16px;
    }

    .input-container {
        padding: 12px;
    }

    #message-input {
        font-size: 14px;
    }
}