:root {
    --bg-deep: #0a0c10;
    --bg-card: #111318;
    --border-card: #1e2230;
    --accent-cyan: #00e5ff;
    --accent-green: #00ff88;
    --accent-red: #ff4d6d;
    --text-primary: #e8eaed;
    --text-secondary: #8b919a;
    --text-muted: #5c6370;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-deep);
    background-image:
        linear-gradient(rgba(30, 34, 48, 0.3) 1px, transparent 1px),
        linear-gradient(90deg, rgba(30, 34, 48, 0.3) 1px, transparent 1px);
    background-size: 20px 20px;
    min-height: 100vh;
    color: var(--text-primary);
}

.app-layout {
    display: flex;
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    gap: 20px;
}

.main-content {
    flex: 1;
    min-width: 0;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
}

/* Sidebar */
.sidebar {
    width: 320px;
    flex-shrink: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    max-height: calc(100vh - 40px);
    position: sticky;
    top: 20px;
}

.sidebar-header {
    padding: 16px;
    border-bottom: 1px solid var(--border-card);
}

.sidebar-header h3 {
    margin-bottom: 12px;
    font-family: 'Syne', sans-serif;
    font-weight: 700;
    font-size: 1em;
    color: var(--text-secondary);
}

.sidebar-tabs {
    display: flex;
    gap: 4px;
}

.sidebar-tab {
    flex: 1;
    padding: 8px 4px;
    font-size: 0.75em;
    background: var(--bg-deep);
    border: 1px solid var(--border-card);
    border-radius: 6px;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s ease;
}

.sidebar-tab.active {
    background: linear-gradient(135deg, var(--accent-cyan), #00b8d4);
    color: var(--bg-deep);
    border-color: var(--accent-cyan);
    font-weight: 600;
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 12px;
}

.sidebar-footer {
    padding: 12px;
    border-top: 1px solid var(--border-card);
}

.btn-refresh {
    width: 100%;
    padding: 10px;
    background: var(--bg-deep);
    border: 1px solid var(--border-card);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 0.85em;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

/* History list */
.history-list, .media-list, .stats-panel {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.history-item, .media-item {
    padding: 10px 12px;
    background: var(--bg-deep);
    border: 1px solid var(--border-card);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.history-item:hover, .media-item:hover {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 2px rgba(0, 229, 255, 0.1);
}

.history-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
}

.history-item-provider {
    font-size: 0.7em;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--accent-cyan);
    font-weight: 600;
}

.history-item-time {
    font-size: 0.7em;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
}

.history-item-prompt {
    font-size: 0.85em;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.history-item-meta {
    font-size: 0.75em;
    color: var(--text-muted);
    margin-top: 4px;
}

.media-item img {
    width: 100%;
    border-radius: 6px;
    margin-bottom: 6px;
}

.media-item-url {
    font-size: 0.75em;
    color: var(--accent-cyan);
    word-break: break-all;
}

/* Stats panel */
.stats-panel {
    gap: 12px;
}

.stats-card {
    background: var(--bg-deep);
    border: 1px solid var(--border-card);
    border-radius: 8px;
    padding: 12px;
}

.stats-card h4 {
    font-size: 0.8em;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.stats-value {
    font-size: 1.6em;
    font-weight: 700;
    color: var(--accent-cyan);
    font-family: 'Syne', sans-serif;
}

.stats-breakdown {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-top: 8px;
}

.stats-breakdown-item {
    display: flex;
    justify-content: space-between;
    font-size: 0.8em;
    color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 1100px) {
    .sidebar {
        width: 260px;
    }
}

@media (max-width: 900px) {
    .app-layout {
        flex-direction: column;
    }
    .sidebar {
        width: 100%;
        max-height: 400px;
        position: static;
    }
}

header {
    text-align: center;
    padding: 30px 0;
    border-bottom: 1px solid var(--border-card);
    margin-bottom: 20px;
}

h1 {
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    font-size: 2.5em;
    margin-bottom: 10px;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.95em;
    margin-bottom: 15px;
}

.provider-badge {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 6px;
    font-size: 0.85em;
    font-weight: 500;
    border: 1px solid var(--border-card);
    background: var(--bg-card);
    color: var(--text-secondary);
}

.provider-badge.active {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    box-shadow: 0 0 15px rgba(0, 229, 255, 0.15);
}

.settings-panel {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
}

.settings-panel h3 {
    margin-bottom: 15px;
    color: var(--text-secondary);
    font-family: 'Syne', sans-serif;
    font-weight: 700;
    font-size: 1.1em;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.settings-row {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    margin-bottom: 15px;
}

.form-group {
    flex: 1;
    min-width: 180px;
}

label {
    display: block;
    margin-bottom: 6px;
    color: var(--text-muted);
    font-size: 0.8em;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

select, input {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border-card);
    border-radius: 8px;
    background: var(--bg-deep);
    color: var(--text-primary);
    font-size: 0.95em;
    transition: all 0.2s ease;
}

select:focus, input:focus {
    outline: none;
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.1);
}

button {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9em;
    font-weight: 500;
    transition: all 0.2s ease;
    font-family: 'Syne', sans-serif;
    font-weight: 600;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-cyan), #00b8d4);
    color: var(--bg-deep);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 229, 255, 0.3);
}

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

.btn-secondary:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}

.btn-clear {
    padding: 8px 12px;
    background: transparent;
    border: 1px solid var(--border-card);
    color: var(--text-secondary);
    border-radius: 6px;
    font-size: 0.9em;
    cursor: pointer;
}

.btn-clear:hover {
    border-color: var(--accent-red);
    color: var(--accent-red);
}

.settings-bar {
    display: flex;
    gap: 10px;
    align-items: center;
    background: var(--bg-card);
    border-top: 1px solid var(--border-card);
    padding: 12px 20px;
    margin-top: 10px;
    margin-bottom: 20px;
}

.settings-bar select, .settings-bar input {
    padding: 8px 12px;
    border: 1px solid var(--border-card);
    border-radius: 6px;
    background: var(--bg-deep);
    color: var(--text-primary);
    font-size: 0.9em;
    min-width: 100px;
}

.settings-bar input[type="range"] {
    min-width: 120px;
}

.settings-bar #tempValue {
    font-family: 'JetBrains Mono';
    font-size: 0.9em;
    color: var(--accent-cyan);
    min-width: 40px;
    text-align: center;
}

.chat-container {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: 12px;
    min-height: 400px;
    max-height: 500px;
    overflow-y: auto;
    padding: 20px;
    margin-bottom: 20px;
}

.message {
    margin-bottom: 16px;
    padding: 16px;
    border-radius: 10px;
    animation: fadeIn 0.3s ease;
    border: 1px solid transparent;
}

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

.message-user {
    background: rgba(0, 229, 255, 0.05);
    border-color: rgba(0, 229, 255, 0.2);
    margin-left: 30px;
}

.message-assistant {
    background: rgba(0, 255, 136, 0.03);
    border-color: rgba(0, 255, 136, 0.15);
    margin-right: 30px;
}

.message-system {
    background: rgba(255, 193, 7, 0.05);
    border-color: rgba(255, 193, 7, 0.2);
    margin-right: 30px;
    font-style: italic;
}

.message-header {
    font-size: 0.75em;
    color: var(--text-muted);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 500;
}

.message-user .message-header {
    color: var(--accent-cyan);
}

.message-assistant .message-header {
    color: var(--accent-green);
}

.message-content {
    line-height: 1.7;
    font-size: 0.95em;
}

.message-content h1, .message-content h2, .message-content h3 {
    margin-top: 18px;
    margin-bottom: 12px;
    color: var(--text-primary);
    font-family: 'Syne', sans-serif;
    font-weight: 700;
}

.message-content h1 { font-size: 1.4em; }
.message-content h2 { font-size: 1.2em; }
.message-content h3 { font-size: 1.05em; }

.message-content p {
    margin-bottom: 12px;
}

.message-content code {
    font-family: 'JetBrains Mono', monospace;
    background: rgba(0, 0, 0, 0.4);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.9em;
    color: var(--accent-cyan);
}

.message-content pre {
    background: var(--bg-deep);
    border: 1px solid var(--border-card);
    padding: 16px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 14px 0;
}

.message-content pre code {
    background: none;
    padding: 0;
    color: var(--accent-green);
}

.code-wrapper {
    position: relative;
}

.copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    padding: 6px 12px;
    background: var(--border-card);
    border: 1px solid var(--text-muted);
    border-radius: 4px;
    color: var(--text-secondary);
    font-size: 0.75em;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s ease, background 0.2s ease;
}

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

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

.copy-btn.copied {
    background: var(--accent-green);
    border-color: var(--accent-green);
    color: var(--bg-deep);
}

.image-wrapper {
    position: relative;
    display: inline-block;
}

.download-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    padding: 6px 10px;
    background: var(--border-card);
    border: 1px solid var(--text-muted);
    border-radius: 4px;
    color: var(--text-secondary);
    font-size: 0.75em;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s ease, background 0.2s ease;
    z-index: 10;
}

.message-content:hover .download-btn {
    opacity: 1;
}

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

.download-btn.downloading {
    background: var(--accent-cyan);
    border-color: var(--accent-cyan);
}

.message-content ul,
.message-content ol {
    margin: 12px 0;
    padding-left: 24px;
}

.message-content li {
    margin-bottom: 6px;
}

.message-content li::marker {
    color: var(--accent-cyan);
}

.message-content a {
    color: var(--accent-cyan);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s;
}

.message-content a:hover {
    border-bottom-color: var(--accent-cyan);
}

.message-content blockquote {
    border-left: 3px solid var(--accent-cyan);
    margin: 14px 0;
    padding-left: 16px;
    color: var(--text-secondary);
    font-style: normal;
}

.message-content table {
    border-collapse: collapse;
    width: 100%;
    margin: 14px 0;
    font-size: 0.9em;
}

.message-content th,
.message-content td {
    border: 1px solid var(--border-card);
    padding: 10px 12px;
    text-align: left;
}

.message-content th {
    background: var(--bg-deep);
    color: var(--accent-cyan);
    font-weight: 600;
    font-family: 'Syne', sans-serif;
    text-transform: uppercase;
    font-size: 0.8em;
    letter-spacing: 0.05em;
}

.message-content hr {
    border: none;
    border-top: 1px solid var(--border-card);
    margin: 18px 0;
}

.input-area {
    display: flex;
    gap: 12px;
    align-items: end;
}

.file-upload-area {
    position: relative;
    display: flex;
    align-items: center;
}

.file-label {
    padding: 8px 12px;
    border: 2px dashed var(--border-card);
    border-radius: 8px;
    background: var(--bg-deep);
    color: var(--accent-cyan);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 1.5em;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 4px;
    position: relative;
    --upload-progress: 0;
}

.file-label.uploading {
    border-color: transparent;
}

.file-label.uploading::before {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: 10px;
    background: conic-gradient(
        var(--accent-cyan) calc(var(--upload-progress) * 1%),
        var(--border-card) 0
    );
    -webkit-mask: radial-gradient(circle, transparent 72%, #000 73%);
    mask: radial-gradient(circle, transparent 72%, #000 73%);
}

.file-label:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    background: rgba(0, 229, 255, 0.05);
}

#fileInput {
    display: none;
}

.file-list {
    margin-top: 8px;
    font-size: 0.8em;
    color: var(--accent-green);
}

.input-area textarea {
    flex: 1;
    padding: 16px;
    border: 1px solid var(--border-card);
    border-radius: 10px;
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 1em;
    resize: none;
    height: 64px;
    font-family: inherit;
}

.input-area textarea:focus {
    outline: none;
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.1);
}

.input-area textarea::placeholder {
    color: var(--text-muted);
}

.loading {
    text-align: center;
    padding: 20px;
    color: var(--text-muted);
}

.loading::after {
    content: '...';
    animation: dots 1.5s steps(4, end) infinite;
}

@keyframes dots {
    0%, 20% { content: '.'; }
    40% { content: '..'; }
    60%, 100% { content: '...'; }
}

.error {
    background: rgba(255, 77, 109, 0.1);
    border: 1px solid rgba(255, 77, 109, 0.3);
    padding: 14px 18px;
    border-radius: 10px;
    margin-bottom: 20px;
    color: var(--accent-red);
    font-size: 0.9em;
}

/* Scrollbar styling */
.chat-container::-webkit-scrollbar {
    width: 6px;
}

.chat-container::-webkit-scrollbar-track {
    background: var(--bg-deep);
    border-radius: 3px;
}

.chat-container::-webkit-scrollbar-thumb {
    background: var(--border-card);
    border-radius: 3px;
}

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