/* CSS Variables */
:root {
    --primary-color: #4a90d9;
    --primary-dark: #357abd;
    --primary-light: rgba(74, 144, 217, 0.1);
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --background-color: #f5f7fa;
    --background-alt: #e9ecef;
    --card-background: #ffffff;
    --surface-elevated: #ffffff;
    --text-color: #333333;
    --text-muted: #6c757d;
    --border-color: #e1e5eb;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --radius: 8px;
    --radius-sm: 4px;
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --sidebar-width: 50%;
    --msg-primary-bg: #dcf8c6;
    --msg-other-bg: #e3f2fd;
    --font-xs: 0.7rem;
    --font-sm: 0.75rem;
    --font-base: 0.85rem;
    --font-md: 0.9rem;
    --font-lg: 0.95rem;
    --font-xl: 1rem;
}

/* Reset and Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

/* Shared Button Base */
.btn-base {
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: var(--spacing-xs) var(--spacing-md);
    cursor: pointer;
    color: var(--text-color);
    font-size: var(--font-base);
    transition: all 0.2s;
    text-align: left;
}

.btn-base:hover {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Navigation */
.navbar {
    background-color: var(--card-background);
    box-shadow: var(--shadow);
    padding: var(--spacing-sm) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 50px;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.nav-brand a {
    font-size: 1.25rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

/* Vertical separator between title and tabs */
.nav-separator {
    width: 1px;
    height: 24px;
    background-color: var(--border-color);
    margin: 0 var(--spacing-sm);
}

/* Folder Navigation Tabs */
.nav-folders {
    display: flex;
    gap: var(--spacing-xs);
}

.nav-folder {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    font-size: 1.25rem;
    text-decoration: none;
    border-radius: var(--radius);
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    transition: all 0.2s;
}

.nav-folder:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

.nav-folder.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    box-shadow: 0 2px 4px rgba(74, 144, 217, 0.3);
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
}

.nav-search {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.nav-search input[type="search"] {
    height: 30px;
    width: 240px;
    padding: 0 var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background-color: var(--background-color);
    color: var(--text-color);
    font-size: var(--font-base);
}

.nav-search input[type="search"]:focus {
    outline: 2px solid rgba(74, 144, 217, 0.35);
    outline-offset: 1px;
}

.nav-link {
    color: var(--text-color);
    text-decoration: none;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius);
    transition: background-color 0.2s;
    font-size: var(--font-md);
}

.nav-link:hover,
.nav-link.active {
    background-color: var(--background-color);
    color: var(--primary-color);
}

/* Settings dropdown */
.settings-menu {
    position: relative;
}

.settings-menu > summary {
    list-style: none;
}

.settings-menu > summary::-webkit-details-marker {
    display: none;
}

.settings-dropdown {
    position: absolute;
    top: calc(100% + var(--spacing-xs));
    right: 0;
    min-width: 280px;
    background-color: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: var(--spacing-sm);
    display: none;
    z-index: 110;
}

.settings-menu[open] .settings-dropdown {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.settings-item {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-align: left;
}

/* Main Container */
.container {
    height: calc(100vh - 50px);
    margin-top: 50px;
    padding: 0;
    max-width: none;
}

/* App Layout - Sidebar + Messages */
.app-layout {
    display: flex;
    height: 100%;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    min-width: var(--sidebar-width);
    background-color: var(--card-background);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Calendar Widget */
.calendar-widget {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.calendar-header h2 {
    font-size: var(--font-xl);
    font-weight: 600;
    margin: 0;
}

.cal-nav-btn {
    background-color: var(--background-alt);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: var(--spacing-xs) var(--spacing-sm);
    cursor: pointer;
    color: var(--text-color);
    font-weight: 600;
    font-size: var(--font-md);
    transition: all 0.2s;
}

.cal-nav-btn:hover {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.calendar-grid {
    user-select: none;
}

.calendar-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 2px;
    margin-bottom: var(--spacing-xs);
}

.weekday {
    text-align: center;
    font-size: var(--font-xs);
    font-weight: 600;
    color: var(--text-muted);
    padding: var(--spacing-xs);
}

.calendar-days {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 2px;
}

.calendar-day {
    aspect-ratio: 1;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    border-radius: var(--radius-sm);
    font-size: var(--font-base);
    transition: all 0.15s;
    padding: 2px 4px;
    overflow: hidden;
    min-height: 0;
}

.calendar-day.empty {
    background: transparent;
}

.calendar-day:not(.empty) {
    background-color: var(--background-color);
}

.day-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.day-number {
    font-weight: 600;
}

.day-count {
    font-size: var(--font-xs);
    color: var(--text-muted);
    text-align: right;
}

.day-count .count-number {
    font-weight: 700;
}

.day-title {
    font-size: var(--font-xs);
    font-weight: 700;
    color: var(--text-color);
    overflow: hidden;
    width: 100%;
    max-width: 100%;
    word-wrap: break-word;
    line-height: 1.2;
    text-shadow: 0 0 3px rgba(255, 255, 255, 0.9),
                 0 0 5px rgba(255, 255, 255, 0.7);
}

.calendar-day.has-messages {
    background-color: #e3f2fd;
    cursor: pointer;
}

.calendar-day.has-messages:hover {
    background-color: #bbdefb;
    transform: scale(1.1);
}

.calendar-day.has-images {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.calendar-day.current {
    outline: 4px solid var(--primary-color);
    outline-offset: -4px;
    box-shadow: 0 0 0 2px rgba(74, 144, 217, 0.3),
                inset 0 0 8px rgba(74, 144, 217, 0.2);
    z-index: 1;
    transform: scale(1.05);
}

.calendar-day.current .day-number {
    font-weight: 700;
}

.day-number {
    pointer-events: none;
}

/* Messages Panel */
.messages-panel {
    flex: 1;
    max-width: 50%;
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--spacing-md);
    scroll-behavior: smooth;
}

/* Date Section */
.date-section {
    margin-bottom: var(--spacing-lg);
    scroll-margin-top: var(--spacing-md);
}

.date-section::after {
    content: '';
    display: table;
    clear: both;
}

.date-section.highlight {
    animation: highlight-pulse 2s ease-out;
}

@keyframes highlight-pulse {
    0% { background-color: rgba(74, 144, 217, 0.2); }
    100% { background-color: transparent; }
}

/* Bounce animation for scroll limits */
@keyframes bounce-top {
    0% { transform: translateY(0); }
    50% { transform: translateY(200px); }
    100% { transform: translateY(0); }
}

@keyframes bounce-bottom {
    0% { transform: translateY(0); }
    50% { transform: translateY(-200px); }
    100% { transform: translateY(0); }
}

.messages-panel.bounce-top {
    animation: bounce-top 0.4s cubic-bezier(0.36, 0, 0.64, 1);
}

.messages-panel.bounce-bottom {
    animation: bounce-bottom 0.4s cubic-bezier(0.36, 0, 0.64, 1);
}

.date-header {
    position: sticky;
    top: 0;
    background-color: var(--background-color);
    padding: var(--spacing-sm) var(--spacing-md);
    margin-left: calc(-1 * var(--spacing-md));
    margin-right: calc(-1 * var(--spacing-md));
    margin-bottom: var(--spacing-sm);
    z-index: 10;
    border-bottom: 1px solid var(--border-color);
}

.date-label {
    font-weight: 600;
    font-size: var(--font-md);
    color: var(--text-muted);
}

/* Message Bubble */
.message {
    margin-bottom: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius);
    max-width: 85%;
    clear: both;
    position: relative;
}

.message.has-reactions {
    margin-bottom: calc(var(--spacing-sm) + 18px);
}

.message-reactions {
    position: absolute;
    bottom: -12px;
    display: inline-flex;
    align-items: center;
    gap: 2px;
    padding: 2px 8px;
    border-radius: 999px;
    background-color: var(--card-background);
    border: 1px solid var(--border-color);
    font-size: var(--font-lg);
    line-height: 1;
    pointer-events: none;
    box-shadow: var(--shadow);
}

.message-primary .message-reactions {
    right: var(--spacing-sm);
}

.message-other .message-reactions {
    left: var(--spacing-sm);
}

/* Primary contact - right aligned, green */
.message-primary {
    float: right;
    margin-left: 15%;
    border-bottom-right-radius: var(--radius-sm);
    background-color: var(--msg-primary-bg);
}

.message-primary .message-header {
    flex-direction: row-reverse;
}

/* Other contacts - left aligned, blue */
.message-other {
    float: left;
    margin-right: 15%;
    border-bottom-left-radius: var(--radius-sm);
    background-color: var(--msg-other-bg);
}

.message.message-focused {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Inline Notes (at end of day) */
.message-note {
    float: none;
    clear: both;
    max-width: 100%;
    margin-left: 0;
    margin-right: 0;
    margin-top: var(--spacing-md);
    background-color: #fffef0;
    border: 1px solid #f0e68c;
    border-left: 4px solid #ffc107;
}

.message-note .note-bubble {
    background: transparent;
}

.message-note .message-header {
    flex-direction: row;
    border-bottom: 1px solid rgba(255, 193, 7, 0.3);
    padding-bottom: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.message-note .message-contact {
    font-weight: 600;
    color: #856404;
}

.message-note .message-time {
    color: #856404;
    opacity: 0.7;
}

.note-content {
    padding-top: var(--spacing-xs);
}

.inline-note-title {
    font-size: var(--font-lg);
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.inline-note-field {
    margin-bottom: var(--spacing-sm);
}

.inline-note-field:last-child {
    margin-bottom: 0;
}

.inline-note-field strong {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--text-muted);
    font-size: var(--font-sm);
}

.inline-note-text {
    background-color: rgba(255, 255, 255, 0.6);
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    border-left: 3px solid #ffc107;
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* Note images */
.note-image-link {
    display: inline-block;
    max-width: 100%;
    margin: var(--spacing-sm) 0;
    cursor: pointer;
}

.note-img {
    max-width: 100%;
    max-height: 400px;
    border-radius: var(--radius);
    cursor: pointer;
    transition: transform 0.2s;
    display: block;
}

.note-img:hover {
    transform: scale(1.02);
}

/* Note image in gallery */
.gallery-item-note {
    border: 2px solid #ffc107;
}

/* Sidebar notes panel */
.sidebar-notes-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    border-top: 1px solid var(--border-color);
    overflow: hidden;
    position: relative;
}

.sidebar-notes-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
    opacity: 0.3;
}

.sidebar-notes-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-sm);
    position: relative;
    z-index: 1;
}

.sidebar-notes-empty {
    color: var(--text-muted);
    font-size: 0.85rem;
    text-align: center;
    padding: var(--spacing-lg);
}

.sidebar-note {
    background-color: #fffef0;
    border: 1px solid #f0e68c;
    border-left: 4px solid #ffc107;
    border-radius: var(--radius);
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.sidebar-note:last-child {
    margin-bottom: 0;
}

.sidebar-note-title {
    font-size: var(--font-lg);
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.sidebar-note-field {
    margin-bottom: var(--spacing-sm);
}

.sidebar-note-field:last-child {
    margin-bottom: 0;
}

.sidebar-note-field strong {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: #856404;
    font-size: var(--font-sm);
}

.sidebar-note-text {
    background-color: rgba(255, 255, 255, 0.6);
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    border-left: 3px solid #ffc107;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.sidebar-note-text p {
    margin: 0;
}

/* Note images in sidebar */
.sidebar-note-text img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius);
    margin-top: var(--spacing-xs);
    display: block;
}

/* Search dialog */
.search-dialog {
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 0;
    overflow: hidden;
}

.search-dialog:not([open]) {
    display: none;
}

.search-dialog[open] {
    position: fixed;
    inset: 0;
    margin: auto;
    width: min(760px, 60vw);
    max-height: 60vh;
    display: flex;
    flex-direction: column;
}

.search-dialog::backdrop {
    background: rgba(0, 0, 0, 0.25);
}

@media (max-width: 820px) {
    .search-dialog[open] {
        width: 92vw;
    }
}

@media (max-height: 520px) {
    .search-dialog[open] {
        max-height: 82vh;
    }
}

.search-dialog-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    background-color: var(--card-background);
}

.search-dialog-title {
    font-weight: 600;
    color: var(--text-color);
}

.search-dialog-body {
    padding: var(--spacing-md);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    flex: 1;
}

.search-dialog-status {
    color: var(--text-muted);
    font-size: var(--font-md);
}

.search-results {
    overflow: auto;
    flex: 1;
}

/* About Dialog */
.about-dialog {
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 0;
    overflow: hidden;
}

.about-dialog:not([open]) {
    display: none;
}

.about-dialog[open] {
    position: fixed;
    inset: 0;
    margin: auto;
    width: min(600px, 50vw);
    max-height: 70vh;
    display: flex;
    flex-direction: column;
}

.about-dialog::backdrop {
    background: rgba(0, 0, 0, 0.25);
}

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

.whatsnew-body {
    background: var(--background-alt);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: var(--spacing-lg);
    max-width: 72ch;
    margin: var(--spacing-md) auto;
    line-height: 1.55;
    color: var(--text-color);
    box-shadow: var(--shadow);
}

.whatsnew-body h1,
.whatsnew-body h2,
.whatsnew-body h3,
.whatsnew-body h4 {
    margin: 0 0 var(--spacing-sm) 0;
    line-height: 1.2;
}

.whatsnew-body p {
    margin: 0 0 var(--spacing-sm) 0;
}

.whatsnew-body ul,
.whatsnew-body ol {
    margin: 0 0 var(--spacing-sm) var(--spacing-md);
    padding-left: var(--spacing-md);
}

.whatsnew-body code {
    background: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0 4px;
    font-size: 0.95em;
}

.whatsnew-body pre {
    background: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: var(--spacing-sm);
    overflow: auto;
}

@media (max-width: 820px) {
    .about-dialog[open] {
        width: 92vw;
    }
}

@media (max-height: 520px) {
    .about-dialog[open] {
        max-height: 82vh;
    }
}

.search-results-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.search-result-item {
    width: 100%;
    text-align: left;
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    font: inherit;
    color: inherit;
    transition: border-color 0.2s;
}

.search-result-item .message-contact {
    text-align: right;
}

.search-result-item.search-result-primary {
    background-color: var(--msg-primary-bg);
}

.search-result-item.search-result-other {
    background-color: var(--msg-other-bg);
}

.search-result-item.search-result-note {
    background-color: #fffef0;
    border: 1px solid #f0e68c;
    border-left: 4px solid #ffc107;
}

.search-result-item:hover {
    border-color: var(--primary-color);
}

.message-bubble {
    display: flex;
    flex-direction: column;
}

.message-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xs);
    gap: var(--spacing-md);
}

.message-contact {
    font-size: var(--font-sm);
    font-weight: 600;
    color: var(--text-muted);
}

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

.message-content {
    word-wrap: break-word;
}

.message-text {
    margin: 0;
    white-space: pre-wrap;
    font-size: var(--font-lg);
}

.message-img {
    max-width: 100%;
    max-height: 300px;
    border-radius: var(--radius);
    cursor: pointer;
    transition: transform 0.2s;
    display: block;
}

.message-img:hover {
    transform: scale(1.02);
}

.message-img.error {
    opacity: 0.5;
    max-width: 150px;
}

.image-link {
    display: block;
    line-height: 0;
}

/* Footer - hidden in app mode */
.footer {
    display: none;
}

/* Error Page */
.error-container {
    text-align: center;
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
}

.error-container h1 {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.error-message {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-lg);
}

.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: background-color 0.2s;
}

.btn:hover {
    background-color: var(--primary-dark);
}

/* Scrollbar Styling */
.messages-panel::-webkit-scrollbar {
    width: 8px;
}

.messages-panel::-webkit-scrollbar-track {
    background: var(--background-color);
}

.messages-panel::-webkit-scrollbar-thumb {
    background-color: var(--border-color);
    border-radius: var(--radius-sm);
}

.messages-panel::-webkit-scrollbar-thumb:hover {
    background-color: var(--secondary-color);
}

/* Responsive */
@media (max-width: 768px) {
    :root {
        --sidebar-width: 260px;
    }

    .calendar-day {
        font-size: var(--font-xs);
    }

    .message {
        max-width: 95%;
    }
}

@media (max-width: 600px) {
    .app-layout {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        min-width: 100%;
        max-height: 40vh;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .messages-panel {
        flex: 1;
        min-height: 0;
    }
}

/* ========== Gallery Page Styles ========== */
.gallery-container {
    padding: var(--spacing-lg);
    overflow-y: auto;
    height: 100%;
}

.gallery-header {
    margin-bottom: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.gallery-header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.gallery-stats {
    color: var(--text-muted);
    font-size: var(--font-base);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.gallery-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: var(--radius);
    overflow: hidden;
    cursor: pointer;
    background-color: var(--background-color);
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
}

.gallery-item:hover {
    transform: scale(1.02);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gallery-item-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,0.7));
    color: white;
    padding: var(--spacing-sm);
    font-size: var(--font-sm);
    opacity: 0;
    transition: opacity 0.2s;
}

.gallery-item:hover .gallery-item-overlay {
    opacity: 1;
}

.gallery-item-date {
    font-weight: 500;
}

.gallery-item-contact {
    font-size: var(--font-xs);
    opacity: 0.8;
}

.gallery-date-section {
    margin-bottom: var(--spacing-xl);
}

.gallery-date-header {
    font-size: var(--font-lg);
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-xs);
    border-bottom: 2px solid var(--primary-color);
    display: inline-block;
}

/* ========== Music Page Styles ========== */
.music-container {
    padding: var(--spacing-lg);
    overflow-y: auto;
    height: 100%;
}

.music-header {
    margin-bottom: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.music-header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.music-stats {
    color: var(--text-muted);
    font-size: var(--font-base);
}

.music-bulk-actions {
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
}

.music-bulk-actions .btn-base {
    padding: 0.35rem 0.6rem;
}

.music-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.music-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--background-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: grab;
}

.music-item:hover {
    transform: translateX(4px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.music-item.dragging {
    opacity: 0.7;
    cursor: grabbing;
}

.music-item.playing {
    background-color: var(--primary-light);
    border-left: 4px solid var(--primary-color);
}

.music-icon {
    font-size: 1.5rem;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary-light);
    border-radius: 50%;
    flex-shrink: 0;
}

.music-info {
    flex: 1;
    min-width: 0;
}

.music-checkbox {
    margin-right: var(--spacing-sm);
    cursor: pointer;
    width: 18px;
    height: 18px;
    accent-color: var(--primary-color);
}

.music-title {
    font-weight: 500;
    color: var(--text-color);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.music-filename {
    font-size: var(--font-sm);
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.music-controls {
    flex-shrink: 0;
}

.play-btn {
    background: var(--primary-color);
    border: none;
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, transform 0.2s;
}

.play-btn:hover {
    background: var(--primary-dark);
    transform: scale(1.1);
}

/* Compact Nav Audio Player */
.nav-player {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 0 var(--spacing-sm);
    margin-right: var(--spacing-sm);
}

.nav-player.is-hidden {
    display: none !important;
}

.nav-player-btn {
    background: none;
    border: none;
    font-size: 0.9rem;
    cursor: pointer;
    padding: 2px 4px;
    border-radius: var(--radius);
    transition: background 0.2s;
    line-height: 1;
    width: 28px;
    text-align: center;
}

.nav-player-btn:hover {
    background: var(--background-alt);
}

.nav-player-title {
    max-width: 120px;
    font-size: var(--font-sm);
    color: var(--text-color);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    padding: 0 var(--spacing-xs);
}

.nav-player-progress {
    width: 80px;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--border-color);
    border-radius: 2px;
    cursor: pointer;
}

.nav-player-progress::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 10px;
    height: 10px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
}

.nav-player-progress::-moz-range-thumb {
    width: 10px;
    height: 10px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

.nav-player-time {
    font-size: 0.7rem;
    color: var(--text-muted);
    min-width: 36px;
}

.nav-player-volume-wrapper {
    position: relative;
}

.nav-player-volume-popup {
    display: none;
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-top: 8px;
    padding: 12px 8px;
    background: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 1000;
}

.nav-player-volume-popup.open {
    display: block;
}

.nav-player-volume {
    width: 4px;
    height: 80px;
    -webkit-appearance: slider-vertical;
    appearance: slider-vertical;
    writing-mode: vertical-lr;
    direction: rtl;
    background: var(--border-color);
    border-radius: 2px;
    cursor: pointer;
}

.nav-player-volume::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
}

.nav-player-volume::-moz-range-thumb {
    width: 14px;
    height: 14px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

/* Hide player on small screens */
@media (max-width: 900px) {
    .nav-player {
        display: none;
    }
}

.volume-control input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 12px;
    height: 12px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
}

.volume-control input[type="range"]::-moz-range-thumb {
    width: 12px;
    height: 12px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-muted);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

.section-header {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-muted);
    margin: var(--spacing-lg) 0 var(--spacing-md) 0;
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
}

.music-item.youtube .music-icon {
    background-color: #ff0000;
    color: white;
}

#youtube-player-container {
    position: fixed;
    top: -9999px;
    left: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

/* ========== Game Page Styles ========== */
.game-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    min-height: calc(100vh - 100px);
    padding: var(--spacing-xl);
    padding-top: calc(var(--spacing-xl) + 20px);
    text-align: center;
}

.game-header {
    margin-bottom: var(--spacing-xl);
}

.game-header h1 {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.game-stats {
    display: flex;
    gap: var(--spacing-xl);
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.stat-box {
    background: var(--card-background);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    min-width: 100px;
}

.stat-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-color);
}

.stat-label {
    font-size: var(--font-sm);
    color: var(--text-muted);
    text-transform: uppercase;
}

.streak-box .stat-value {
    color: #f59e0b;
}

.game-card {
    background: var(--card-background);
    border-radius: var(--radius);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    padding: var(--spacing-xl);
    max-width: 600px;
    width: 100%;
    margin-bottom: var(--spacing-xl);
}

.game-message {
    font-size: 1.25rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.game-message-text {
    padding: var(--spacing-md);
    background: var(--background-color);
    border-radius: var(--radius);
    max-width: 100%;
    word-wrap: break-word;
}

.game-message img {
    max-width: 100%;
    max-height: 300px;
    border-radius: var(--radius);
    object-fit: contain;
}

.game-date {
    font-size: var(--font-sm);
    color: var(--text-muted);
    margin-top: var(--spacing-sm);
}

.game-choices {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    width: 100%;
}

.choice-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    background: var(--card-background);
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-color);
}

.choice-btn:hover:not(:disabled) {
    border-color: var(--primary-color);
    background: rgba(74, 144, 217, 0.1);
    transform: translateY(-2px);
}

.choice-btn:disabled {
    cursor: not-allowed;
}

.choice-btn.correct {
    border-color: #22c55e;
    background: rgba(34, 197, 94, 0.2);
    color: #15803d;
}

.choice-btn.wrong {
    border-color: #ef4444;
    background: rgba(239, 68, 68, 0.2);
    color: #dc2626;
}

.game-result {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: var(--spacing-md);
    height: 40px;
    visibility: hidden;
}

.game-result.correct,
.game-result.wrong {
    visibility: visible;
}

.game-result.correct {
    color: #22c55e;
}

.game-result.wrong {
    color: #ef4444;
}

.next-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.1rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.2s;
    visibility: hidden;
}

.next-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.next-btn.visible {
    visibility: visible;
}

.view-message-link {
    visibility: hidden;
    margin-top: var(--spacing-md);
    color: var(--primary-color);
    text-decoration: none;
    font-size: var(--font-sm);
}

.view-message-link:hover {
    text-decoration: underline;
}

.view-message-link.visible {
    visibility: visible;
}

.loading {
    opacity: 0.5;
    pointer-events: none;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

@keyframes bounce {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.shake {
    animation: shake 0.3s ease-in-out;
}

.bounce {
    animation: bounce 0.3s ease-in-out;
}

.confetti-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
}

@keyframes fall {
    to {
        transform: translateY(110vh) rotate(360deg);
        opacity: 0;
    }
}

/* ========== Word Cloud Page Styles ========== */
.wordcloud-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: var(--spacing-md);
    gap: var(--spacing-md);
}

.wordcloud-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.wordcloud-title {
    font-size: var(--font-xl);
    font-weight: 600;
    color: var(--text-color);
}

.wordcloud-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    background-color: var(--card-background);
    padding: var(--spacing-sm);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.wordcloud-tab {
    padding: var(--spacing-xs) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background-color: var(--background-color);
    color: var(--text-color);
    cursor: pointer;
    font-size: var(--font-sm);
    text-decoration: none;
    transition: all 0.2s;
}

.wordcloud-tab:hover {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.wordcloud-tab.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.wordcloud-canvas-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--card-background);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    min-height: 400px;
}

#wordcloud-canvas {
    max-width: 100%;
    max-height: 100%;
}

.wordcloud-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    color: var(--text-muted);
}

.wordcloud-loading .spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.wordcloud-stats {
    display: flex;
    gap: var(--spacing-lg);
    font-size: var(--font-sm);
    color: var(--text-muted);
}

.wordcloud-controls {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: flex-end;
}

.type-tabs {
    background-color: var(--primary-color-light, rgba(74, 144, 217, 0.1));
}

.type-tabs .wordcloud-tab.active {
    background-color: var(--secondary-color, #28a745);
    border-color: var(--secondary-color, #28a745);
}

.type-tabs .wordcloud-tab:hover:not(.active) {
    background-color: var(--secondary-color, #28a745);
    border-color: var(--secondary-color, #28a745);
}

#emoji-cloud {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.emoji-item {
    position: absolute;
    cursor: default;
    transition: transform 0.2s, z-index 0s;
    line-height: 1;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
    z-index: 1;
}

.emoji-item:hover {
    transform: scale(1.4) !important;
    z-index: 100;
}