static/style.css

/* StepFun Studio Ultra-Minimalist & Mobile-Friendly Style Sheet */
:root {
    --bg-primary: #f8f9fa;
    --bg-workspace: #f8f9fa;
    --bg-card: #ffffff;
    --bg-sidebar: #ffffff;
    
    --border-color: #e5e7eb;
    --border-light: #f1f2f4;
    --border-focus: #111827;
    
    --accent-blue: #2563eb;
    --accent-blue-bg: #eff6ff;
    
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;
    --danger: #ef4444;
    
    --btn-light-bg: #f3f4f6;
    --btn-light-hover: #e5e7eb;
    
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'Fira Code', monospace;
    
    --transition-smooth: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --border-radius-pill: 100px;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.03), 0 2px 4px -1px rgba(0, 0, 0, 0.01);
    --shadow-lg: 0 10px 30px -10px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.02);
}

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 14px;
    line-height: 1.5;
    overflow: hidden;
    height: 100vh;
    width: 100vw;
    -webkit-font-smoothing: antialiased;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
    width: 4px;
    height: 4px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: #e5e7eb;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: #cbd5e1;
}

/* Parent container */
.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
    overflow: hidden;
    position: relative;
}

/* Main Workspace taking 100vw */
.main-workspace {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100%;
    background-color: var(--bg-workspace);
    overflow: hidden;
    position: relative;
    width: 100%;
}

/* Clean Header Bar */
.workspace-header {
    height: 56px;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-card);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 10;
}

.header-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.brand-logo-img {
    width: 24px;
    height: 24px;
    object-fit: contain;
    border-radius: 50%;
    flex-shrink: 0;
}

.brand-name {
    font-family: var(--font-heading);
    font-size: 15px;
    font-weight: 700;
    letter-spacing: -0.3px;
    color: var(--text-primary);
}

.header-actions {
    display: flex;
    gap: 8px;
}

/* Simplified Header Buttons */
.header-btn {
    appearance: none;
    -webkit-appearance: none;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    padding: 6px 12px;
    font-size: 12px;
    font-family: var(--font-body);
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    transition: var(--transition-smooth);
    outline: none;
    box-shadow: var(--shadow-sm);
}

.header-btn:hover {
    background-color: var(--btn-light-bg);
    border-color: #cbd5e1;
    color: var(--text-primary);
}

.header-btn:active {
    background-color: var(--btn-light-hover);
    transform: scale(0.98);
}

.header-btn svg {
    flex-shrink: 0;
}

/* Viewport Layout */
.workspace-viewport {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

/* Studio Dashboard (Empty state) */
.studio-dashboard {
    max-width: 640px;
    width: 100%;
    margin: auto;
    padding: 40px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.welcome-heading {
    font-family: var(--font-heading);
    font-size: 26px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 24px;
    letter-spacing: -0.4px;
    text-align: center;
}

/* Console Container Box */
.console-box {
    width: 100%;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    padding: 12px 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: var(--transition-smooth);
    margin-bottom: 36px;
}

.console-box:focus-within {
    border-color: var(--border-focus);
    box-shadow: var(--shadow-lg);
}

.console-box textarea {
    width: 100%;
    border: none;
    outline: none;
    resize: none;
    font-family: var(--font-body);
    font-size: 14.5px;
    color: var(--text-primary);
    background: transparent;
    line-height: 1.45;
    min-height: 50px;
}

.console-box textarea::placeholder {
    color: var(--text-muted);
}

/* Inner preview shelf inside console drawer */
.inner-shelf-preview,
.mini-shelf-preview {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding-bottom: 2px;
}

.console-action-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-light);
    padding-top: 10px;
}

/* Action button circle */
.circle-btn-action {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
    outline: none;
}

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

/* Send button dark circle */
.circle-btn-send {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: none;
    background-color: #1f2937;
    color: #ffffff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
    outline: none;
}

.circle-btn-send:hover {
    background-color: #111827;
}

/* Ultra-minimal Showcase chips (Decluttered) */
.showcase-section {
    width: 100%;
}

.showcase-title {
    font-size: 12.5px;
    color: var(--text-secondary);
    margin-bottom: 12px;
    text-align: center;
    font-weight: 500;
}

.showcase-chips-row {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
}

.recipe-chip {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: var(--border-radius-pill);
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition-smooth);
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    box-shadow: var(--shadow-sm);
}

.recipe-chip:hover {
    background-color: var(--btn-light-bg);
    border-color: #cbd5e1;
    color: var(--text-primary);
    transform: translateY(-1px);
}

.recipe-chip:active {
    transform: translateY(0);
}

.chip-icon {
    font-size: 14px;
}

/* Chat thread viewport */
.chat-thread-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.chat-messages-feed {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    max-width: 680px;
    width: 100%;
    margin: 0 auto;
}

/* Message bubbles */
.message-bubble {
    display: flex;
    flex-direction: column;
    gap: 4px;
    max-width: 90%;
    animation: slideUp 0.25s ease-out;
}

.message-bubble.user {
    align-self: flex-end;
}

.message-bubble.assistant {
    align-self: flex-start;
    width: 100%;
    max-width: 100%;
}

.message-meta {
    font-size: 10px;
    color: var(--text-muted);
    font-weight: 600;
    margin: 0 4px;
}

.message-bubble.user .message-meta {
    text-align: right;
}

.message-body {
    padding: 10px 14px;
    border-radius: var(--border-radius-md);
    font-size: 13.5px;
    line-height: 1.5;
    box-shadow: var(--shadow-sm);
}

.message-bubble.user .message-body {
    background-color: var(--btn-light-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-bottom-right-radius: 4px;
}

.message-bubble.assistant .message-body {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-bottom-left-radius: 4px;
}

/* Bubble attachments grid */
.bubble-attachments {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 6px;
    margin-top: 8px;
    max-width: 320px;
}

.bubble-attachment-card {
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    border: 1px solid var(--border-color);
    background-color: #fafafa;
    position: relative;
    aspect-ratio: 16/10;
}

.bubble-attachment-card img,
.bubble-attachment-card video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.bubble-attachment-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.6);
    color: #fff;
    font-size: 8px;
    text-align: center;
    padding: 1px;
    font-family: var(--font-mono);
}

/* Collapsible Thoughts nodes */
.thought-container {
    margin-bottom: 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    overflow: hidden;
}

.thought-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 10px;
    background-color: #f9fafb;
    cursor: pointer;
    user-select: none;
    transition: var(--transition-smooth);
}

.thought-header:hover {
    background-color: #f3f4f6;
}

.thought-title-group {
    display: flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-heading);
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
}

.thought-timer {
    font-family: var(--font-mono);
    font-size: 9.5px;
    color: var(--text-muted);
}

.thought-toggle-icon {
    font-size: 9px;
    color: var(--text-secondary);
    transition: transform 0.2s ease;
}

.thought-container.collapsed .thought-toggle-icon {
    transform: rotate(-90deg);
}

.thought-content {
    padding: 10px 12px;
    font-family: var(--font-mono);
    font-size: 11.5px;
    color: var(--text-secondary);
    background-color: #ffffff;
    border-top: 1px solid var(--border-color);
    white-space: pre-wrap;
    max-height: 150px;
    overflow-y: auto;
}

.thought-container.collapsed .thought-content {
    display: none;
}

/* Markdown typography rendering inside bubbles */
.markdown-body h1,
.markdown-body h2,
.markdown-body h3 {
    margin-top: 12px;
    margin-bottom: 4px;
    font-family: var(--font-heading);
    font-weight: 600;
}

.markdown-body h1 { font-size: 14.5px; border-bottom: 1px solid var(--border-light); padding-bottom: 2px; }
.markdown-body h2 { font-size: 13.5px; }
.markdown-body h3 { font-size: 12.5px; }

.markdown-body p {
    margin-bottom: 6px;
}

.markdown-body p:last-child {
    margin-bottom: 0;
}

.markdown-body code {
    font-family: var(--font-mono);
    font-size: 11px;
    background-color: var(--btn-light-bg);
    padding: 2px 4px;
    border-radius: 4px;
    color: var(--accent-blue);
}

.markdown-body pre {
    margin: 10px 0;
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.markdown-body pre code {
    display: block;
    padding: 10px;
    overflow-x: auto;
    background-color: #0f172a !important;
    color: #e2e8f0;
}

.markdown-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 10px 0;
    font-size: 12px;
}

.markdown-body th,
.markdown-body td {
    border: 1px solid var(--border-color);
    padding: 6px 8px;
    text-align: left;
}

.markdown-body th {
    background-color: var(--bg-primary);
    font-weight: 600;
}

/* Reply footer box */
.chat-mini-footer {
    padding: 12px 20px;
    background-color: var(--bg-workspace);
    border-top: 1px solid var(--border-color);
}

.chat-mini-footer .console-box {
    max-width: 680px;
    margin: 0 auto;
    box-shadow: var(--shadow-sm);
    padding: 8px 12px;
    border-radius: var(--border-radius-md);
    margin-bottom: 0;
}

/* Backdrop Overlay for mobile Settings slide */
.sidebar-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(1.5px);
    z-index: 990;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

.sidebar-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

/* Collapsible Right settings Drawer */
.sidebar-right {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 320px;
    background-color: var(--bg-sidebar);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.03);
    transform: translateX(0);
}

.sidebar-right.collapsed {
    transform: translateX(100%);
}

.right-sidebar-header {
    padding: 14px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.right-sidebar-header h3 {
    font-family: var(--font-heading);
    font-size: 13.5px;
    font-weight: 600;
    color: var(--text-primary);
}

.close-drawer {
    border-color: transparent !important;
}

.close-drawer:hover {
    background-color: var(--btn-light-bg) !important;
}

.sidebar-right-content {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.right-block-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.flex-1-card {
    flex: 1;
    min-height: 180px;
}

.card-block-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.block-title {
    font-family: var(--font-heading);
    font-size: 12px;
    font-weight: 600;
    color: var(--text-primary);
}

/* Password Toggle and Credentials field */
input[type="password"] {
    width: 100%;
    background-color: #f9fafb;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    padding: 7px 10px;
    font-size: 12px;
    font-family: var(--font-body);
    transition: var(--transition-smooth);
}

input[type="password"]:focus {
    outline: none;
    border-color: var(--border-focus);
    background-color: #ffffff;
}

.password-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.password-wrapper input {
    padding-right: 32px;
}

.visibility-toggle {
    position: absolute;
    right: 6px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
}

.visibility-toggle:hover {
    color: var(--text-primary);
}

/* Effort Radio Buttons Pills */
.effort-picker {
    display: flex;
    background-color: #f9fafb;
    border: 1px solid var(--border-color);
    padding: 2.5px;
    border-radius: var(--border-radius-sm);
    gap: 2px;
}

.effort-pill {
    flex: 1;
    cursor: pointer;
    text-align: center;
    position: relative;
}

.effort-pill input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.effort-pill span {
    display: block;
    padding: 5px 0;
    font-size: 11px;
    font-weight: 500;
    border-radius: 4px;
    color: var(--text-secondary);
    transition: var(--transition-smooth);
    font-family: var(--font-heading);
}

.effort-pill input:checked + span {
    background-color: #111827;
    color: #ffffff;
}

.effort-pill:hover span:not(input:checked + span) {
    color: var(--text-primary);
    background-color: rgba(0,0,0,0.02);
}

/* Uploader & Media chips settings list */
.shelf-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    overflow-y: auto;
}

.empty-shelf-text {
    font-size: 10.5px;
    color: var(--text-muted);
    text-align: center;
    padding: 8px 0;
    font-style: italic;
}

.media-chip {
    display: flex;
    align-items: center;
    background-color: #f9fafb;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 5px 8px;
    gap: 8px;
    transition: var(--transition-smooth);
}

.media-chip-preview {
    width: 24px;
    height: 24px;
    border-radius: 4px;
    object-fit: cover;
    background-color: #eaeaea;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
}

.media-chip-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.media-chip-details {
    flex: 1;
    min-width: 0;
}

.media-chip-name {
    font-size: 10.5px;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--text-primary);
}

.media-chip-meta {
    font-size: 9px;
    color: var(--text-muted);
    display: flex;
    gap: 4px;
}

.media-chip-remove {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 3px;
    display: flex;
}

.media-chip-remove:hover {
    color: var(--danger);
}

/* Attachment preview thumbnail inside input fields */
.quick-preview-item {
    width: 32px;
    height: 32px;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
    overflow: hidden;
    position: relative;
    flex-shrink: 0;
}

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

.quick-preview-badge {
    position: absolute;
    top: 1.5px;
    right: 1.5px;
    background-color: var(--accent-blue);
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.right-sidebar-footer {
    padding: 10px 16px;
    border-top: 1px solid var(--border-color);
}

.status-indicator-group {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 10.5px;
    color: var(--text-secondary);
}

.status-dot {
    width: 5px;
    height: 5px;
    border-radius: 50%;
}

.status-dot.online {
    background-color: #10b981;
}

/* Loading animations */
.spinner-light {
    width: 12px;
    height: 12px;
    border: 1.5px solid rgba(255, 255, 255, 0.2);
    border-top: 1.5px solid #ffffff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   Responsive & Mobile Design Rules
   ========================================================================== */

/* Drawer behavior on Tablet and Desktop */
@media (min-width: 641px) {
    .sidebar-right.collapsed {
        transform: translateX(100%);
    }
    
    /* When settings are open, we can optionally squeeze the workspace */
    .app-container:not(.settings-collapsed) .main-workspace {
        /* Only apply if you want layout shifting. Slicing over is cleaner! */
    }
}

/* Ultra-mobile scaling details (screens < 640px) */
@media (max-width: 640px) {
    body {
        font-size: 13.5px;
    }
    
    .workspace-header {
        padding: 0 16px;
    }
    
    /* Header action labels hidden, only icons visible */
    .header-btn span {
        display: none;
    }
    
    .header-btn {
        padding: 8px;
    }
    
    /* Settings slides covers 100% width on mobile */
    .sidebar-right {
        width: 100% !important;
        border-left: none;
    }
    
    .studio-dashboard {
        padding: 30px 16px;
    }
    
    .welcome-heading {
        font-size: 22px;
        margin-bottom: 20px;
    }
    
    /* Chat thread viewport layout */
    .chat-messages-feed {
        padding: 16px;
        gap: 18px;
    }
    
    .message-body {
        padding: 9px 12px;
        font-size: 13px;
    }
    
    .message-bubble {
        max-width: 95%;
    }
    
    .chat-mini-footer {
        padding: 10px 12px;
    }
    
    .recipe-chip {
        padding: 6px 12px;
        font-size: 11.5px;
    }
}