/* ==========================================================================
   主题: 超新星辉光 (Supernova Glow) for InfraNotes
   色板: 深空蓝 (Deep Space Blue) × 超新星蓝 (Supernova Blue)
   ========================================================================== */

/* ====== 1. 全局变量 & 基础样式 ====== */
:root {
    /* 基础与层级 */
    --bg: #02030A;
    --surface: #101422;
    --glass: rgba(16, 20, 34, 0.6);
    --line: rgba(0, 191, 255, 0.2);
    --line-soft: rgba(0, 191, 255, 0.1);

    /* 文本 */
    --text: #E0E8FF;
    --text-muted: #7F8DAA;

    /* 品牌与强调色 */
    --brand: #00BFFF; /* Supernova Blue */
    --brand-dark: #00AADD;
    --brand-glow: rgba(0, 191, 255, 0.25);
    --brand-glow-faint: rgba(0, 191, 255, 0.1);

    /* 形状与阴影 */
    --radius-md: 12px;
    --radius-lg: 18px;
    --shadow-glow: 0 0 24px var(--brand-glow);
    --transition-fast: 0.2s ease;
    
    /* 字体 (使用系统UI字体，无外部依赖) */
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-family-monospace: 'SF Mono', 'Fira Code', 'Fira Mono', 'Roboto Mono', monospace;
}

/* 基础 HTML 和 Body 设置 */
html {
    box-sizing: border-box;
    font-size: 16px; 
}

*, *::before, *::after {
    box-sizing: inherit;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--font-family);
    line-height: 1.6;
    overflow: hidden;
    height: 100vh;
    height: var(--vh, 100vh);
    /* 新增：深空背景特效 */
    background-image: radial-gradient(ellipse 80% 80% at 50% -20%,rgba(0, 191, 255, 0.15), transparent);
    background-repeat: no-repeat;
}

/* 添加一个伪元素来创建噪点背景，增加质感 */
body::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 800 800"><filter id="f"><feTurbulence type="fractalNoise" baseFrequency="0.65" numOctaves="3" stitchTiles="stitch"/></filter><rect width="100%" height="100%" filter="url(%23f)" opacity="0.025"/></svg>');
    z-index: -1;
    pointer-events: none;
}


/* ====== 2. 主布局 & 应用容器 ====== */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    max-width: 820px;
    margin: 0 auto;
}

/* ====== 3. 聊天框 & 消息 ====== */
#chatBox {
    flex: 1;
    overflow-y: auto;
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    scrollbar-width: thin;
    scrollbar-color: var(--line) transparent;
}

#chatBox::-webkit-scrollbar { width: 6px; }
#chatBox::-webkit-scrollbar-track { background: transparent; }
#chatBox::-webkit-scrollbar-thumb { background-color: var(--line); border-radius: 3px; }

/* ★★★ 修改: 重构消息容器样式以提高稳定性 ★★★ */
.message-wrapper {
    display: flex;
}

.user-wrapper {
    align-self: flex-end;
    justify-content: flex-end;
    max-width: 90%;
    flex-shrink: 0; /* 关键修复：防止该元素在flex布局中被压缩 */
}

.assistant-wrapper {
    display: flex; /* 关键修复：使其成为一个flex容器 */
    flex-direction: column;
    align-self: flex-start;
    width: 100%; /* 现在不再有冲突 */
    white-space: pre-wrap;
    overflow-wrap: break-word;
    word-break: break-word;
    color: #FFFFFF; /* 修改: 设置为纯白色 */;
}

.user-bubble {
    background: linear-gradient(135deg, var(--surface), #1a2035);
    padding: 0.7rem 1.2rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--line-soft);
    white-space: pre-wrap;
    overflow-wrap: break-word;
    word-break: break-word;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.assistant-wrapper > div { /* 直接选择内部的内容容器 */
    display: block;
}

.assistant-wrapper.typing::after {
    content: '▋';
    display: inline-block;
    color: var(--brand);
    animation: blink 1s infinite;
}

@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

/* ====== 4. 输入区域 ====== */
#inputContainer {
    padding: 1rem 1.5rem 1.5rem;
    /* 背景设为透明，以便 body 的背景渐变能透出来 */
    background: transparent;
    flex-shrink: 0;
    position: relative;
}
.input-wrapper {
    display: flex;
    align-items: flex-end;
    gap: 0.75rem;
    padding: 0.5rem 0.6rem 0.5rem 1.2rem;
    background-color: var(--glass);
    border: 1px solid var(--line-soft);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.input-wrapper:focus-within {
    border-color: var(--brand);
    box-shadow: var(--shadow-glow);
}
#inputBox {
    flex: 1; background: none; border: none; outline: none;
    color: var(--text); font-family: var(--font-family); font-size: 1rem;
    line-height: 1.5; padding: 0.35rem 0; resize: none; overflow-y: hidden;
    max-height: calc(1.5em * 5 + 0.7rem); scrollbar-width: none;
}
#inputBox::-webkit-scrollbar { display: none; }
#inputBox::placeholder { color: var(--text-muted); }

#sendBtn {
    display: flex; align-items: center; justify-content: center;
    width: 40px; height: 40px; background-color: var(--brand);
    border: none; border-radius: 50%; color: white; cursor: pointer;
    transition: all var(--transition-fast); flex-shrink: 0;
    box-shadow: 0 0 12px var(--brand-glow);
}
#sendBtn svg { width: 18px; height: 18px; transform: rotate(45deg) translate(-1px, 1px); }
#sendBtn:hover { background-color: var(--brand-dark); transform: scale(1.05); }

/* ====== 5. 上下文菜单 ====== */
.context-menu {
    position: absolute; display: none; min-width: 180px;
    background-color: var(--glass); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    border-radius: var(--radius-md); border: 1px solid var(--line-soft);
    box-shadow: 0 8px 32px rgba(2, 3, 10, 0.5); padding: 0.5rem; z-index: 1000;
    opacity: 0; transform: scale(0.95); transition: opacity var(--transition-fast), transform var(--transition-fast);
}
.context-menu.visible { opacity: 1; transform: scale(1); }
.context-menu-item {
    display: flex; align-items: center; gap: 0.75rem; padding: 0.6rem 1rem;
    color: var(--text); font-size: 0.9rem; cursor: pointer; border-radius: 8px;
    user-select: none; transition: background-color var(--transition-fast);
}
.context-menu-item:hover { background-color: var(--brand); color: var(--bg); }
.context-menu-item svg { width: 16px; height: 16px; }
.context-menu-separator { height: 1px; background-color: var(--line-soft); margin: 0.5rem 0; }

/* ====== 6. 密码对话框 ====== */
.pw-modal-backdrop {
    position: fixed; inset: 0; display: none; align-items: center;
    justify-content: center; z-index: 2000; background: rgba(2, 3, 10, 0.6);
    backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
}
.pw-modal {
    width: 90%; max-width: 420px; background: var(--surface); color: var(--text);
    border: 1px solid var(--line-soft); border-radius: var(--radius-lg); padding: 24px;
    box-shadow: 0 12px 40px rgba(0,0,0,0.6); animation: modalFadeIn 0.3s ease;
}

@keyframes modalFadeIn { from { opacity: 0; transform: scale(0.9); } to { opacity: 1; transform: scale(1); } }

.pw-title { font-size: 1.2rem; font-weight: 600; margin-bottom: 8px; color: var(--text); }
.pw-desc { font-size: 0.95rem; color: var(--text-muted); margin-bottom: 16px; line-height: 1.5; }
.pw-input {
    width: 100%; padding: 12px 14px; border-radius: 8px; border: 1px solid var(--line);
    background: var(--bg); color: var(--text); outline: none; font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.pw-input:focus { border-color: var(--brand); box-shadow: var(--shadow-glow); }
.pw-actions { display: flex; gap: 12px; margin-top: 16px; }
.pw-btn {
    flex: 1; padding: 12px; border: none; border-radius: 8px; cursor: pointer;
    font-weight: 600; font-size: 1rem; transition: all 0.2s;
}
.pw-btn#pwConfirm { background: var(--brand); color: var(--bg); }
.pw-btn#pwConfirm:hover { background: var(--brand-dark); transform: translateY(-2px); }
.pw-btn.secondary { background: var(--surface); color: var(--text-muted); border: 1px solid var(--line-soft); }
.pw-btn.secondary:hover { background-color: var(--glass); color: var(--text); }
.pw-error { color: #ff7b7b; font-size: 0.9rem; margin-top: 10px; display: none; text-align: center; }

/* ====== 7. 响应式设计 ====== */
@media (max-width: 768px) {
    html { font-size: 22px; }
    #chatBox { padding: 1rem; }
    #inputContainer { padding: 0.5rem 1rem 1rem; }
    .input-wrapper { padding: 0.4rem 0.4rem 0.4rem 0.8rem; }
}

/* ====== 8. 桌面端侧边栏 (样式继承新色板) ====== */
@media (min-width: 769px) {
    #desktop-wrapper { display: flex; height: 100vh; }
    #sidebar {
        flex: 0 0 calc(100% / 6);
        max-width: 260px;
        background-color: var(--bg); /* 使用主背景色 */
        border-right: 1px solid var(--line-soft); /* 使用柔和线条 */
        padding: 1rem;
        display: flex;
        flex-direction: column;
        gap: 0.1rem; 
        overflow-y: auto;
    }
    .app-container { flex: 1; max-width: none; }
    .sidebar-item {
        display: flex; align-items: center; padding: 0.4rem 1rem; 
        color: var(--text-muted); text-decoration: none; border-radius: 8px;
        font-weight: 500; position: relative; overflow: hidden;
        cursor: pointer; user-select: none;
        transition: color 0.2s ease, background-color 0.2s ease;
    }
    .sidebar-item .icon {
        margin-right: 0.5rem; font-size: 1.2rem;
        display: inline-block; width: 24px; text-align: center;
    }
    .sidebar-item:hover {
        background-color: var(--brand-glow-faint);
        color: var(--text);
    }
    .sidebar-item.icon-only { padding: 0.4rem 1rem; }
    .sidebar-item.icon-only .icon { margin-right: 0; font-size: 1.5rem; }
    .sidebar-spacer { height: 0.2rem; }
}

/* ====== ★★★ 新增: 代码块样式 ★★★ ====== */
.code-block-container {
    background-color: rgba(2, 3, 10, 0.5); /* 更深的背景 */
    border: 1px solid var(--line-soft);
    border-radius: var(--radius-md);
    margin-top: 0.5rem; /* 与普通文本隔开 */
    overflow: hidden;
}

.code-block-header {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    padding: 0.4rem 0.6rem;
    background-color: var(--surface);
    border-bottom: 1px solid var(--line-soft);
}

.copy-button {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    background-color: transparent;
    border: 1px solid transparent;
    color: var(--text-muted);
    padding: 0.2rem 0.5rem;
    border-radius: 6px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.copy-button:hover {
    background-color: var(--brand-glow-faint);
    color: var(--text);
}

.copy-button svg {
    width: 14px;
    height: 14px;
}

.code-block-container pre {
    margin: 0;
    padding: 1rem;
    overflow-x: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--line) transparent;
}

.code-block-container pre::-webkit-scrollbar { height: 6px; }
.code-block-container pre::-webkit-scrollbar-track { background: transparent; }
.code-block-container pre::-webkit-scrollbar-thumb { background-color: var(--line); border-radius: 3px; }

.code-block-container code {
    font-family: var(--font-family-monospace);
    font-size: 0.9rem;
    color: #d1d5db; /* 保持一个可读性好的代码颜色 */
    white-space: pre;
}