:root {
    --bg: #0f1216;
    --panel: #181c22;
    --panel-2: #1e242b;
    --text: #f1f3f5;
    --muted: #9ca3af;
    --gold: #e5a823;
    --gold-hover: #c98f15;
    --border: #2c333c;
    --radius: 10px;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    height: 100vh;
    overflow: hidden;
}

.app {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.app-header {
    padding: 16px 24px;
    background: var(--panel);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: baseline;
    gap: 12px;
}

.app-header h1 {
    margin: 0;
    font-size: 20px;
    color: var(--gold);
}

.app-header p {
    margin: 0;
    color: var(--muted);
    font-size: 13px;
}

.main-tabs {
    display: flex;
    gap: 8px;
    padding: 12px 24px;
    background: var(--panel);
    border-bottom: 1px solid var(--border);
}

.main-tab {
    background: var(--panel-2);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 10px 20px;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
}

.main-tab.active {
    background: var(--gold);
    color: #1e242b;
    border-color: var(--gold);
}

.tab-panel {
    display: none;
    flex: 1;
    flex-direction: column;
    overflow: hidden;
}

.tab-panel.active {
    display: flex;
}

.toolbar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    background: var(--panel-2);
    border-bottom: 1px solid var(--border);
}

.slide-tabs {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    flex: 1;
}

.slide-tab {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
    padding: 8px 16px;
    border-radius: var(--radius);
    cursor: pointer;
    white-space: nowrap;
    font-size: 13px;
}

.slide-tab.active {
    background: var(--gold);
    color: #1e242b;
    border-color: var(--gold);
    font-weight: 600;
}

.workspace {
    display: grid;
    grid-template-columns: 1fr 380px;
    flex: 1;
    overflow: hidden;
}

.preview-panel {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    overflow: auto;
    align-items: center;
    justify-content: flex-start;
}

.preview-header {
    width: 100%;
    max-width: 720px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.badge {
    background: var(--panel-2);
    color: var(--muted);
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    border: 1px solid var(--border);
}

.canvas-wrapper {
    background: #ffffff;
    border-radius: var(--radius);
    padding: 8px;
    box-shadow: var(--shadow);
}

#previewCanvas {
    display: block;
    width: min(680px, calc(100vw - 440px));
    height: auto;
    border-radius: 4px;
    background: #000;
}

.controls-panel {
    background: var(--panel);
    border-left: 1px solid var(--border);
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.panel-section {
    background: var(--panel-2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
}

.panel-section h2 {
    margin: 0 0 12px;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--gold);
}

label {
    display: block;
    margin: 12px 0 6px;
    font-size: 12px;
    color: var(--muted);
}

input[type="text"],
input[type="number"],
select,
textarea {
    width: 100%;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    padding: 10px 12px;
    font-size: 13px;
    outline: none;
}

textarea {
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--gold);
}

.btn {
    border: none;
    border-radius: 6px;
    padding: 10px 16px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s ease;
}

.btn-primary {
    background: var(--gold);
    color: #1e242b;
}

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

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

.btn-secondary:hover {
    background: #3a424d;
}

#generateBtn,
#applyConfigBtn {
    width: 100%;
    margin-top: 12px;
}

.file-name {
    font-size: 12px;
    color: var(--muted);
    margin-top: 4px;
    word-break: break-all;
}

.chat-workspace {
    grid-template-columns: 1fr 380px;
    padding: 0;
}

.chat-panel {
    display: flex;
    flex-direction: column;
    padding: 24px;
    overflow: hidden;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding-right: 8px;
    margin-bottom: 16px;
}

.chat-bubble {
    max-width: 80%;
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 14px;
    line-height: 1.5;
    white-space: pre-wrap;
}

.chat-bubble.user {
    align-self: flex-end;
    background: var(--gold);
    color: #1e242b;
}

.chat-bubble.assistant {
    align-self: flex-start;
    background: var(--panel-2);
    border: 1px solid var(--border);
}

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

.chat-input-row input[type="text"] {
    flex: 1;
}

.slide-count-row {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 70px;
}

.slide-count-row label {
    margin: 0;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--muted);
}

.slide-count-row input[type="number"] {
    padding: 10px 8px;
    text-align: center;
}

.chat-sidebar .btn-success {
    background: #22c55e;
    color: #ffffff;
    width: 100%;
    margin-top: 12px;
}

.chat-sidebar .btn-success:disabled {
    background: #3f4d3f;
    color: #9ca3af;
    cursor: not-allowed;
}

.approved-preview {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 12px;
    font-size: 13px;
    line-height: 1.5;
    color: var(--text);
    min-height: 80px;
    max-height: 300px;
    overflow-y: auto;
    white-space: pre-wrap;
}

.placeholder-text {
    padding: 40px;
    color: var(--muted);
    text-align: center;
}

.image-workspace,
.flux-workspace {
    grid-template-columns: 380px 1fr;
    padding: 0;
}

.image-sidebar,
.flux-workspace .chat-sidebar {
    border-left: none;
    border-right: 1px solid var(--border);
}

.image-panel {
    padding: 24px;
    overflow-y: auto;
}

.image-slides {
    display: flex;
    flex-direction: column;
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.image-card {
    background: var(--panel-2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.image-card h3 {
    margin: 0 0 12px;
    font-size: 16px;
    color: var(--gold);
    grid-column: 1 / -1;
}

.image-card textarea {
    width: 100%;
    min-height: 160px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    padding: 10px 12px;
    font-size: 13px;
    resize: vertical;
}

.image-card .image-preview {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    min-height: 240px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--muted);
    overflow: hidden;
}

.image-card .image-preview img {
    max-width: 100%;
    max-height: 320px;
    object-fit: contain;
}

.image-actions {
    grid-column: 1 / -1;
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
}

.image-actions .btn {
    min-width: 140px;
}

.status-badge {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--muted);
}

.status-badge.approved {
    background: #22c55e;
    color: #ffffff;
    border-color: #22c55e;
}

.status-badge.rejected {
    background: #ef4444;
    color: #ffffff;
    border-color: #ef4444;
}

@media (max-width: 980px) {
    .workspace {
        grid-template-columns: 1fr;
        overflow-y: auto;
    }
    .chat-workspace {
        grid-template-columns: 1fr;
    }
    .controls-panel {
        border-left: none;
        border-top: 1px solid var(--border);
    }
    #previewCanvas {
        width: min(560px, calc(100vw - 32px));
    }
}