* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Light theme (default) */
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --bg-hover: #f0f4f8;
    --text-primary: #1a1a2e;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --accent: #6366f1;
    --accent-hover: #4f46e5;
    --accent-light: #e0e7ff;
    --user-bg: #dbeafe;
    --user-border: #3b82f6;
    --assistant-bg: #f0fdf4;
    --assistant-border: #22c55e;
    --border: #e2e8f0;
    --shadow: rgba(0, 0, 0, 0.05);
    --shadow-hover: rgba(0, 0, 0, 0.1);
    --code-bg: #f1f5f9;
    --success: #22c55e;
    --warning: #f59e0b;
}

body.dark {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #1e293b;
    --bg-hover: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent: #818cf8;
    --accent-hover: #a5b4fc;
    --accent-light: #312e81;
    --user-bg: #1e3a5f;
    --user-border: #3b82f6;
    --assistant-bg: #14532d;
    --assistant-border: #22c55e;
    --border: #334155;
    --shadow: rgba(0, 0, 0, 0.3);
    --shadow-hover: rgba(0, 0, 0, 0.5);
    --code-bg: #0f172a;
    --success: #4ade80;
    --warning: #fbbf24;
}

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

/* Header */
header {
    background: var(--bg-secondary);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
    gap: 1rem;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 3px var(--shadow);
}

header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

header h1 a {
    color: inherit;
    text-decoration: none;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Refresh button */
.refresh-btn {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
    color: var(--text-primary);
    text-decoration: none;
}

.refresh-btn:hover {
    background: var(--bg-hover);
    border-color: var(--accent);
    color: var(--accent);
}

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

/* Theme toggle */
.theme-toggle {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s, border-color 0.2s;
    color: var(--text-primary);
}

.theme-toggle:hover {
    background: var(--bg-hover);
    border-color: var(--accent);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
    width: 20px;
    height: 20px;
}

body.dark .theme-toggle .icon-sun {
    display: none;
}

body:not(.dark) .theme-toggle .icon-moon {
    display: none;
}

/* Search form */
.search-form {
    display: flex;
    gap: 0.5rem;
}

.search-form input {
    padding: 0.6rem 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-card);
    color: var(--text-primary);
    width: 300px;
    font-size: 0.95rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.search-form input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}

.search-form input::placeholder {
    color: var(--text-muted);
}

.search-form button,
.btn {
    padding: 0.6rem 1.2rem;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: transform 0.2s;
}

.search-form button:hover,
.btn:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--bg-hover);
}

/* Local search (in-page) */
.local-search {
    align-items: center;
}

.local-search .search-count {
    font-size: 0.85rem;
    color: var(--text-secondary);
    min-width: 60px;
    text-align: center;
}

.local-search button {
    padding: 0.4rem 0.6rem;
    font-size: 0.8rem;
    min-width: 32px;
}

/* Search highlight */
.search-highlight {
    background: #fef08a;
    color: #000;
    padding: 1px 2px;
    border-radius: 2px;
}

.search-highlight-current {
    background: #f97316;
    color: #fff;
    box-shadow: 0 0 0 2px #f97316;
}

body.dark .search-highlight {
    background: #854d0e;
    color: #fef9c3;
}

body.dark .search-highlight-current {
    background: #ea580c;
    color: #fff;
    box-shadow: 0 0 0 2px #ea580c;
}

/* =====================
   VIM-STYLE NAVIGATION
   ===================== */

/* Focused message */
.message.vim-focused {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Focused cards (home and project pages) */
.project-card.vim-focused,
.conversation-card.vim-focused {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Selected messages (visual mode) */
.message.vim-selected {
    background: var(--accent-light) !important;
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Yank flash animation */
.message.vim-yanked {
    animation: yankFlash 0.3s ease-out;
}

@keyframes yankFlash {
    0% { background: #22c55e; }
    100% { background: inherit; }
}

body.dark .message.vim-yanked {
    animation: yankFlashDark 0.3s ease-out;
}

@keyframes yankFlashDark {
    0% { background: #166534; }
    100% { background: inherit; }
}

/* Mode indicator */
.vim-mode-indicator {
    position: fixed;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.5rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-family: monospace;
    font-size: 0.9rem;
    color: var(--text-secondary);
    z-index: 1000;
    transition: opacity 0.2s;
    box-shadow: 0 4px 12px var(--shadow);
}

.vim-mode-indicator.vim-visual-mode {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
    font-weight: bold;
}

.vim-mode-indicator.vim-notification {
    background: var(--success);
    color: white;
    border-color: var(--success);
}

.vim-mode-indicator.vim-error {
    background: #ef4444;
    border-color: #ef4444;
}

/* Help modal */
.help-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.help-modal-content {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 2rem;
    max-width: 700px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.help-modal-content h3 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    font-size: 1.4rem;
    text-align: center;
}

.help-columns {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.help-section {
    background: var(--bg-primary);
    padding: 1rem;
    border-radius: 8px;
}

.help-section h4 {
    color: var(--accent);
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 0.5rem;
}

.help-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.4rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.help-row kbd {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.15rem 0.4rem;
    font-family: monospace;
    font-size: 0.8rem;
    color: var(--text-primary);
    min-width: 1.5rem;
    text-align: center;
    box-shadow: 0 1px 2px var(--shadow);
}

.help-footer {
    margin-top: 1.5rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.help-footer kbd {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.1rem 0.3rem;
    font-family: monospace;
    font-size: 0.75rem;
}

/* Main content */
main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

/* Stats */
.stats {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.stat {
    background: var(--bg-card);
    padding: 1.25rem 1.75rem;
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--border);
    min-width: 140px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.stat:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-hover);
}

.stat-value {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* Sort controls */
.sort-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.sort-controls label {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.sort-btn {
    padding: 0.4rem 0.8rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.875rem;
    transition: transform 0.2s;
    text-decoration: none;
}

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

.sort-btn.active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

/* Headings */
h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-weight: 600;
}

h3 {
    font-size: 1.1rem;
    margin: 0 0 0.5rem;
    font-weight: 600;
}

/* Projects grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 1rem;
}

.project-card {
    background: var(--bg-card);
    padding: 1.25rem 1.5rem;
    border-radius: 12px;
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.project-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--shadow-hover);
    border-color: var(--accent);
}

.project-card h3 {
    color: var(--accent);
    font-size: 1.1rem;
}

.project-path {
    color: var(--text-muted);
    font-size: 0.8rem;
    word-break: break-all;
    font-family: 'Monaco', 'Consolas', monospace;
}

.project-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.project-meta span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.project-card time {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Breadcrumb */
.breadcrumb {
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.breadcrumb a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s;
}

.breadcrumb a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

/* Project header */
.project-header {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: 12px;
    margin-bottom: 2rem;
    border: 1px solid var(--border);
}

/* Conversations list */
.conversations-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.conversation-card {
    background: var(--bg-card);
    padding: 1rem 1.25rem;
    border-radius: 10px;
    text-decoration: none;
    color: inherit;
    border: 1px solid var(--border);
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.conversation-card:hover {
    border-color: var(--accent);
    box-shadow: 0 4px 12px var(--shadow-hover);
}

.conversation-titles {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.conversation-title {
    background: var(--accent-light);
    color: var(--accent);
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 500;
}

.conversation-project {
    font-size: 0.8rem;
    color: var(--accent);
    margin-bottom: 0.25rem;
    font-weight: 500;
}

.conversation-preview {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    line-height: 1.5;
}

.conversation-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.8rem;
    color: var(--text-muted);
    flex-wrap: wrap;
}

.conversation-meta span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* Conversation view */
.conversation-header {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border);
}

.conversation-header h2 {
    margin-bottom: 0.5rem;
}

.conversation-titles-header {
    margin: 1rem 0;
}

.conversation-date {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.conversation-id {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: monospace;
}

.conversation-stats {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.conversation-stats span {
    background: var(--bg-primary);
    padding: 0.3rem 0.8rem;
    border-radius: 6px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Messages */
.messages {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.message {
    background: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--border);
    overflow: hidden;
}

.message.user-message {
    border-left: 4px solid var(--user-border);
}

.message.assistant-message {
    border-left: 4px solid var(--assistant-border);
}

.message-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background: var(--bg-hover);
    border-bottom: 1px solid var(--border);
    cursor: pointer;
}

.message-header:hover {
    background: var(--bg-primary);
}

.message-sender {
    font-weight: 600;
    font-size: 0.9rem;
}

.message.user-message .message-sender {
    color: var(--user-border);
}

.message.assistant-message .message-sender {
    color: var(--assistant-border);
}

.message-time {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.message-content {
    padding: 1rem;
    white-space: pre-wrap;
    word-break: break-word;
    font-size: 0.95rem;
    line-height: 1.7;
}

.message-content.collapsed {
    max-height: 150px;
    overflow: hidden;
    position: relative;
}

.message-content.collapsed::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50px;
    background: linear-gradient(transparent, var(--bg-card));
    pointer-events: none;
}

.message-toggle {
    padding: 0.5rem 1rem;
    text-align: center;
    background: var(--bg-hover);
    color: var(--accent);
    font-size: 0.85rem;
    cursor: pointer;
    transition: background 0.2s;
}

.message-toggle:hover {
    background: var(--bg-primary);
}

/* Content blocks (new interleaved format) */
.message-content-blocks {
    padding: 1rem;
}

.content-text {
    white-space: pre-wrap;
    word-break: break-word;
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 0.75rem;
}

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

.content-thinking {
    white-space: pre-wrap;
    word-break: break-word;
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--bg-hover);
    border-radius: 8px;
    border-left: 3px solid var(--warning);
    color: var(--text-secondary);
    font-style: italic;
    overflow: hidden;
}

.content-thinking.collapsed {
    max-height: 4em;
    position: relative;
}

.content-thinking.collapsed::after {
    content: '... (h para expandir)';
    position: absolute;
    bottom: 0;
    right: 0;
    background: linear-gradient(to right, transparent, var(--bg-hover) 30%);
    padding-left: 2em;
    padding-right: 0.5em;
    color: var(--text-muted);
    font-size: 0.75rem;
}

/* Inline tool blocks (within message flow) */
.tool-block-inline {
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    margin: 0.75rem 0;
    overflow: hidden;
}

.tool-block-inline:last-child {
    margin-bottom: 0;
}

.tool-header-inline {
    padding: 0.4rem 0.75rem;
    background: var(--bg-hover);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent);
    border-bottom: 1px solid var(--border);
}

.tool-input-inline {
    margin: 0;
    padding: 0.5rem 0.75rem;
    font-size: 0.75rem;
    font-family: 'Monaco', 'Consolas', 'Courier New', monospace;
    background: var(--bg-secondary);
    color: var(--text-primary);
    white-space: pre-wrap;
    word-break: break-all;
    max-height: 150px;
    overflow-y: auto;
    border-bottom: 1px solid var(--border);
}

.tool-result-inline {
    margin: 0;
    padding: 0.5rem 0.75rem;
    font-size: 0.75rem;
    font-family: 'Monaco', 'Consolas', 'Courier New', monospace;
    background: var(--code-bg);
    color: var(--text-secondary);
    white-space: pre-wrap;
    word-break: break-all;
    max-height: 200px;
    overflow-y: auto;
}

/* Tool blocks */
.tool-blocks {
    padding: 0.75rem 1rem;
    background: var(--bg-hover);
    border-top: 1px solid var(--border);
}

.tool-block {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    margin-bottom: 0.5rem;
    overflow: hidden;
}

.tool-block:last-child {
    margin-bottom: 0;
}

.tool-block.collapsed .tool-input,
.tool-block.collapsed .tool-result,
.tool-block-inline.collapsed .tool-input-inline,
.tool-block-inline.collapsed .tool-result-inline {
    display: none;
}

.tool-block.collapsed .tool-header::after,
.tool-block-inline.collapsed .tool-header-inline::after {
    content: ' (colapsado - l para expandir)';
    font-weight: normal;
    color: var(--text-muted);
    font-size: 0.7rem;
}

.tool-header {
    padding: 0.4rem 0.75rem;
    background: var(--code-bg);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent);
    border-bottom: 1px solid var(--border);
}

.tool-input {
    margin: 0;
    padding: 0.5rem 0.75rem;
    font-size: 0.75rem;
    font-family: 'Monaco', 'Consolas', 'Courier New', monospace;
    background: var(--bg-secondary);
    color: var(--text-primary);
    white-space: pre-wrap;
    word-break: break-all;
    max-height: 150px;
    overflow-y: auto;
    border-bottom: 1px solid var(--border);
}

.tool-result {
    margin: 0;
    padding: 0.5rem 0.75rem;
    font-size: 0.75rem;
    font-family: 'Monaco', 'Consolas', 'Courier New', monospace;
    background: var(--code-bg);
    color: var(--text-secondary);
    white-space: pre-wrap;
    word-break: break-all;
    max-height: 200px;
    overflow-y: auto;
}

/* Search results */
.search-header {
    margin-bottom: 2rem;
}

.search-header h2 {
    margin-bottom: 0.5rem;
}

.search-preview {
    background: var(--code-bg);
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
    border-left: 3px solid var(--accent);
}

.match-count {
    background: var(--accent);
    color: white;
    padding: 0.15rem 0.5rem;
    border-radius: 10px;
    font-size: 0.75rem;
    font-weight: 600;
}

.no-results {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.no-results p {
    font-size: 1.1rem;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    border-top: 1px solid var(--border);
    margin-top: 2rem;
    background: var(--bg-secondary);
}

/* Code blocks in messages */
.message-content code {
    background: var(--code-bg);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-family: 'Monaco', 'Consolas', monospace;
    font-size: 0.9em;
}

.message-content pre {
    background: var(--code-bg);
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 0.75rem 0;
}

.message-content pre code {
    background: transparent;
    padding: 0;
}

/* Responsive */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        text-align: center;
        padding: 1rem;
    }

    .header-controls {
        width: 100%;
        justify-content: center;
    }

    .search-form {
        width: 100%;
    }

    .search-form input {
        width: 100%;
    }

    .stats {
        justify-content: center;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    main {
        padding: 1rem;
    }

    .sort-controls {
        justify-content: center;
    }
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.project-card,
.conversation-card,
.message {
    animation: fadeIn 0.3s ease-out;
}

/* Floating navigation buttons */
.floating-nav {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    z-index: 1000;
}

.floating-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--accent);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px var(--shadow-hover);
    transition: transform 0.2s, box-shadow 0.2s;
}

.floating-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 16px var(--shadow-hover);
}

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

/* Header menu styles */
.header-menu {
    position: relative;
}

.menu-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, color 0.2s;
}

.menu-toggle:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.menu-toggle svg {
    width: 24px;
    height: 24px;
}

.menu-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 4px 12px var(--shadow-hover);
    min-width: 160px;
    z-index: 1000;
    overflow: hidden;
}

.menu-dropdown.show {
    display: block;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    text-decoration: none;
    transition: background 0.2s;
}

.menu-item:hover {
    background: var(--bg-hover);
}

.menu-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

/* Theme icons in menu */
.theme-icon-dark {
    display: none;
}

body.dark .theme-icon-light {
    display: none;
}

body.dark .theme-icon-dark {
    display: block;
}

/* Language labels in menu */
.lang-label-es {
    display: none;
}

[data-lang="es"] .lang-label-en {
    display: none;
}

[data-lang="es"] .lang-label-es {
    display: inline;
}

/* Theme labels in menu */
.theme-label-dark {
    display: none;
}

body.dark .theme-label-light {
    display: none;
}

body.dark .theme-label-dark {
    display: inline;
}

/* Login styles */
.login-container {
    max-width: 400px;
    margin: 4rem auto;
    padding: 2rem;
    background: var(--bg-card);
    border-radius: 12px;
    box-shadow: 0 4px 20px var(--shadow);
}

.login-container h2 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.form-group input {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1rem;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}

.login-btn {
    margin-top: 1rem;
    padding: 0.75rem 1.5rem;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.2s;
}

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

.login-error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #dc2626;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    text-align: center;
}

body.dark .login-error {
    background: #450a0a;
    border-color: #7f1d1d;
    color: #fca5a5;
}

/* Print styles */
@media print {
    header,
    footer,
    .sort-controls,
    .theme-toggle {
        display: none;
    }

    .message-content {
        max-height: none;
    }

    .message-content.collapsed::after {
        display: none;
    }
}