/* Hallmark · app-shell redesign · genre: atmospheric · theme: Midnight
 * tone: atmospheric · accent hue: cool-blue (240°) · display: Space Grotesk
 * pre-emit critique: P4 H5 E5 S4 R5 V5
 */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

/* Design tokens live in tokens.css (loaded before this file). */

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 150ms !important;
    }
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    background: var(--color-paper);
    color: var(--color-ink);
    font-family: var(--font-body);
    font-size: var(--text-md);
    height: 100vh;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ═══════════════════════════════════════
   LOGIN — Split viewport
   ═══════════════════════════════════════ */

#setup {
    position: fixed;
    inset: 0;
    z-index: 100;
    background: var(--color-paper);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: login-in var(--dur-med) var(--ease-out) both;
}

@keyframes login-in {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.setup-split {
    display: flex;
    width: min(960px, 94vw);
    height: min(580px, 90vh);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--color-border);
    box-shadow:
        0 32px 100px -20px oklch(0% 0 0 / 0.7),
        0 0 80px -30px oklch(70% 0.14 240 / 0.08);
}

/* ── Left panel: brand identity ── */
.setup-brand {
    flex: 0 0 42%;
    background:
        radial-gradient(ellipse 80% 60% at 30% 80%, oklch(35% 0.08 240 / 0.3), transparent),
        radial-gradient(ellipse 60% 50% at 70% 20%, oklch(40% 0.06 300 / 0.15), transparent),
        linear-gradient(160deg, oklch(14% 0.02 260), oklch(10% 0.015 260));
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: var(--space-2xl);
    position: relative;
    overflow: hidden;
}

/* Subtle grid overlay */
.setup-brand::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(oklch(100% 0 0 / 0.03) 1px, transparent 1px),
        linear-gradient(90deg, oklch(100% 0 0 / 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
}

.brand-content {
    position: relative;
    z-index: 1;
}

.brand-badge {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 500;
    color: var(--color-accent);
    background: var(--color-accent-dim);
    padding: 3px var(--space-xs);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-md);
    letter-spacing: 0.02em;
}

#setup-logo {
    font-family: var(--font-mono);
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
    letter-spacing: -0.04em;
    color: var(--color-ink);
    line-height: 1;
    margin-bottom: var(--space-xs);
}

#setup-subtitle {
    font-size: var(--text-sm);
    color: var(--color-ink-2);
    margin-bottom: var(--space-lg);
    line-height: 1.4;
}

.brand-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}
.brand-features span {
    font-size: var(--text-xs);
    color: var(--color-ink-2);
    padding-left: var(--space-sm);
    position: relative;
}
.brand-features span::before {
    content: '\2192';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-family: var(--font-mono);
    font-size: 10px;
}

.brand-footer {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--text-xs);
    color: var(--color-ink-muted);
}
.brand-dot {
    width: 6px;
    height: 6px;
    background: var(--color-green);
    border-radius: 50%;
    box-shadow: 0 0 8px oklch(72% 0.17 155 / 0.6);
}

/* ── Right panel: form ── */
.setup-form {
    flex: 1;
    background: var(--color-paper-2);
    padding: var(--space-2xl);
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: var(--space-lg);
}

.form-header { display: flex; flex-direction: column; gap: var(--space-2xs); }
.form-title {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--color-ink);
    letter-spacing: -0.02em;
}
.form-desc {
    font-size: var(--text-sm);
    color: var(--color-ink-2);
}

.form-fields {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.field-label {
    display: flex;
    flex-direction: column;
    gap: var(--space-2xs);
}
.field-key {
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.06em;
    color: var(--color-ink-muted);
}

#setup-error {
    background: oklch(68% 0.19 25 / 0.08);
    border: 1px solid oklch(68% 0.19 25 / 0.25);
    color: var(--color-red);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-md);
    font-size: var(--text-xs);
    line-height: 1.5;
}

#connect-btn {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--text-md);
    font-family: var(--font-display);
    font-weight: 600;
    letter-spacing: -0.01em;
    border-radius: var(--radius-md);
    box-shadow: 0 4px 16px -4px var(--color-accent-glow);
    transition: box-shadow var(--dur-short) var(--ease-out),
                transform var(--dur-short) var(--ease-out),
                opacity var(--dur-short) var(--ease-out);
}
#connect-btn:hover {
    box-shadow: 0 8px 28px -4px var(--color-accent-glow);
}
#connect-btn:active {
    transform: translateY(1px);
}

/* ── Mobile: stack the split ── */
@media (max-width: 680px) {
    .setup-split {
        flex-direction: column;
        width: 100vw;
        height: 100vh;
        border-radius: 0;
        border: none;
    }
    .setup-brand {
        flex: 0 0 auto;
        padding: var(--space-lg) var(--space-lg) var(--space-md);
    }
    .brand-features { display: none; }
    .brand-footer { display: none; }
    #setup-logo { font-size: 2rem; }
    .setup-form {
        flex: 1;
        padding: var(--space-lg);
        justify-content: flex-start;
    }
}

/* ── Form elements ── */
input, button, textarea {
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    background: var(--color-paper);
    color: var(--color-ink);
    font-size: var(--text-sm);
    font-family: var(--font-body);
    outline: none;
    transition: border-color var(--dur-short) var(--ease-out),
                box-shadow var(--dur-short) var(--ease-out),
                background var(--dur-short) var(--ease-out);
}

input::placeholder { color: var(--color-ink-muted); }

input:focus, textarea:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-dim), 0 0 20px -4px var(--color-accent-glow);
}

button {
    background: var(--color-accent);
    color: oklch(100% 0 0);
    border: none;
    font-weight: 600;
    font-family: var(--font-display);
    cursor: pointer;
    transition: opacity var(--dur-short) var(--ease-out),
                transform var(--dur-short) var(--ease-out),
                box-shadow var(--dur-short) var(--ease-out);
}
button:hover { opacity: 0.9; }
button:active { transform: translateY(1px); }
button:focus-visible {
    outline: 2px solid var(--color-focus);
    outline-offset: 2px;
}
button:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

#connect-btn {
    margin-top: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    font-size: var(--text-md);
    border-radius: var(--radius-md);
    letter-spacing: -0.01em;
    box-shadow: 0 4px 16px -4px var(--color-accent-glow);
}
#connect-btn:hover {
    box-shadow: 0 6px 24px -4px var(--color-accent-glow);
}

/* ═══════════════════════════════════════
   MAIN IDE SHELL
   ═══════════════════════════════════════ */
#terminal-container {
    width: 100vw;
    height: 100vh;
    background: var(--color-paper);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* ── Tabs Bar ── */
#tabs-bar {
    display: flex;
    background: var(--color-paper-2);
    padding: 0 var(--space-xs);
    height: 42px;
    align-items: stretch;
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
    gap: var(--space-3xs);
}
#tabs {
    display: flex;
    flex-grow: 1;
    gap: 2px;
    overflow-x: auto;
    align-items: stretch;
    scrollbar-width: none;
}
#tabs::-webkit-scrollbar { display: none; }

.tab-btn-container {
    display: flex;
    align-items: center;
    background: transparent;
    padding: 0 var(--space-sm) 0 var(--space-xs);
    color: var(--color-ink-2);
    cursor: pointer;
    transition: all var(--dur-short) var(--ease-out);
    gap: var(--space-xs);
    font-size: var(--text-xs);
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    white-space: nowrap;
    height: 100%;
    border-bottom: 2px solid transparent;
    position: relative;
}
.tab-btn-container:hover {
    background: var(--color-paper-3);
    color: var(--color-ink);
}
.tab-btn-container.active {
    color: var(--color-ink);
    background: var(--color-paper-3);
    border-bottom-color: var(--color-accent);
}
.tab-btn-container.editor-tab .tab-icon { color: var(--color-orange); }
.tab-btn-container.editor-tab.active { border-bottom-color: var(--color-orange); }
.tab-btn-container.editor-tab.modified .tab-title-text::after {
    content: " ●";
    color: var(--color-orange);
    font-size: 10px;
}
.tab-btn-container[draggable="true"] {
    cursor: grab;
}
.tab-btn-container:active {
    cursor: grabbing;
}
.tab-btn-container.tab-dragging {
    opacity: 0.45;
    background: var(--color-paper-4);
    border-bottom: 2px dashed var(--color-accent);
}

.tab-icon { font-size: var(--text-sm); flex-shrink: 0; }

.tab-btn-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 1px;
    cursor: pointer;
}
.tab-title-text {
    font-size: var(--text-xs);
    font-weight: 500;
    font-family: var(--font-display);
    color: inherit;
}
.tab-subtext {
    font-size: 9px;
    color: var(--color-ink-muted);
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.tab-btn-container.active .tab-subtext { color: var(--color-accent); opacity: 0.8; }

.tab-close-btn {
    background: transparent;
    border: none;
    color: var(--color-ink-muted);
    font-size: 14px;
    padding: var(--space-3xs) var(--space-2xs);
    margin: 0;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--dur-short) var(--ease-out);
    display: flex;
    align-items: center;
    line-height: 1;
    opacity: 0;
}
.tab-btn-container:hover .tab-close-btn { opacity: 1; }
.tab-close-btn:hover { background: oklch(68% 0.19 25 / 0.15); color: var(--color-red); }

/* Tab bar action buttons */
#new-tab-btn {
    background: transparent;
    color: var(--color-ink-2);
    border: none;
    padding: 0 var(--space-xs);
    font-size: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    border-radius: 0;
    transition: all var(--dur-short) var(--ease-out);
}
#new-tab-btn:hover {
    color: var(--color-ink);
    background: var(--color-paper-3);
}

/* Pinned File Explorer toggle on the far left */
#toggle-files-btn {
    background: transparent;
    color: var(--color-ink-2);
    border: none;
    border-right: 1px solid var(--color-border);
    padding: 0 12px;
    margin-right: 4px;
    font-size: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    border-radius: 0;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all var(--dur-short) var(--ease-out);
}
#toggle-files-btn:hover {
    color: var(--color-ink);
    background: var(--color-paper-3);
}
#toggle-files-btn.active {
    color: var(--color-accent);
    background: var(--color-paper-3);
    border-bottom-color: var(--color-accent);
}

#toggle-sidebar-btn, #toggle-chat-btn, #toggle-activity-btn, #copy-link-btn, #help-btn, #disconnect-btn {
    background: transparent;
    border: none;
    color: var(--color-ink-2);
    width: 36px;
    height: 100%;
    padding: 0;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: var(--text-sm);
    transition: all var(--dur-short) var(--ease-out);
    border-radius: 0;
    border-bottom: 2px solid transparent;
}
#toggle-sidebar-btn:hover, #toggle-chat-btn:hover, #toggle-activity-btn:hover, #copy-link-btn:hover, #help-btn:hover {
    color: var(--color-accent);
    background: var(--color-paper-3);
}
#toggle-sidebar-btn.active, #toggle-chat-btn.active, #toggle-activity-btn.active {
    color: var(--color-accent);
    background: var(--color-paper-3);
    border-bottom-color: var(--color-accent);
}
#disconnect-btn:hover { color: var(--color-red); background: oklch(68% 0.19 25 / 0.06); }

/* Tab dirty indicator */
.tab-dirty-dot {
    display: none;
    color: var(--color-accent);
    font-size: 11px;
    margin-left: 4px;
    line-height: 1;
}
.tab-btn-container.dirty .tab-dirty-dot { display: inline-block; }
.tab-btn-container.dirty:hover .tab-dirty-dot { display: none; }
.tab-btn-container.dirty:hover .tab-close-btn { opacity: 1; }

/* ═══════════════════════════════════════
   WORKSPACE LAYOUT
   ═══════════════════════════════════════ */
#workspace { display: flex; flex-grow: 1; overflow: hidden; }
#main-area { display: flex; flex-direction: column; flex-grow: 1; min-width: 0; overflow: hidden; }

/* ── File Explorer ── */
#file-explorer {
    width: 260px;
    background: var(--color-paper-2);
    border-right: 1px solid var(--color-border);
    display: none;
    flex-direction: column;
    flex-shrink: 0;
    overflow: hidden;
}

#fe-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-xs) var(--space-sm);
    height: 38px;
}
#fe-title {
    font-family: var(--font-display);
    font-size: var(--text-xs);
    font-weight: 600;
    letter-spacing: 0.06em;
    color: var(--color-ink-2);
}
#fe-actions { display: flex; gap: var(--space-3xs); align-items: center; }

#fe-actions button, #upload-label {
    cursor: pointer;
    font-size: var(--text-xs);
    padding: var(--space-3xs) var(--space-2xs);
    border-radius: var(--radius-sm);
    color: var(--color-ink-2);
    background: transparent;
    border: none;
    display: flex;
    align-items: center;
    transition: all var(--dur-short) var(--ease-out);
}
#fe-actions button:hover, #upload-label:hover {
    background: var(--color-paper-3);
    color: var(--color-ink);
}

#fe-breadcrumb-wrap {
    display: flex;
    align-items: center;
    background: var(--color-paper);
    border-bottom: 1px solid var(--color-border);
    padding-right: 4px;
    min-height: 28px;
}
#fe-breadcrumb {
    flex-grow: 1;
    padding: var(--space-2xs) var(--space-sm);
    font-size: var(--text-xs);
    font-family: var(--font-mono);
    color: var(--color-ink-muted);
    display: flex;
    align-items: center;
    gap: 3px;
    min-height: 26px;
    overflow-x: auto;
    cursor: pointer;
    min-width: 0;
}
#fe-bc-edit-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 11px;
    padding: 2px 4px;
    border-radius: var(--radius-sm);
    color: var(--color-ink-muted);
    opacity: 0.6;
    transition: all var(--dur-short) var(--ease-out);
    flex-shrink: 0;
}
#fe-bc-edit-btn:hover {
    opacity: 1;
    background: var(--color-paper-3);
    color: var(--color-accent);
}
.bc-seg { cursor: pointer; color: var(--color-ink-2); transition: color var(--dur-short) var(--ease-out); white-space: nowrap; border-radius: 2px; padding: 0 2px; }
.bc-seg:hover { color: var(--color-accent); background: var(--color-paper-3); }
.bc-sep { color: var(--color-ink-muted); font-size: 11px; user-select: none; }
.bc-edit-input {
    flex-grow: 1;
    background: var(--color-paper);
    color: var(--color-ink);
    border: 1px solid var(--color-accent);
    border-radius: var(--radius-sm);
    padding: var(--space-3xs) var(--space-2xs);
    font-size: var(--text-xs);
    font-family: var(--font-mono);
    outline: none;
    min-width: 0;
}
.bc-hint { font-size: 9px; color: var(--color-ink-muted); flex-shrink: 0; margin-left: var(--space-2xs); }

/* File Explorer Search / Filter */
#fe-filter-box {
    padding: var(--space-3xs) var(--space-sm);
    background: var(--color-paper-2);
    border-bottom: 1px solid var(--color-border);
}
#fe-filter {
    width: 100%;
    background: var(--color-paper);
    color: var(--color-ink);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 3px var(--space-xs);
    font-size: var(--text-xs);
    font-family: var(--font-body);
    outline: none;
    transition: all var(--dur-short) var(--ease-out);
}
#fe-filter:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 1px var(--color-accent-glow);
}

/* Drag & Drop over File Explorer */
#file-explorer.drag-active {
    outline: 2px dashed var(--color-accent);
    outline-offset: -3px;
    background: var(--color-paper-3);
}

/* Toast */
#fe-toast {
    padding: var(--space-2xs) var(--space-sm);
    font-size: var(--text-xs);
    background: oklch(68% 0.19 25 / 0.08);
    color: var(--color-red);
    border-bottom: 1px solid oklch(68% 0.19 25 / 0.2);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}
#fe-toast .toast-close {
    margin-left: auto;
    cursor: pointer;
    background: transparent;
    border: none;
    color: var(--color-red);
    font-size: var(--text-sm);
    padding: 0 var(--space-2xs);
}

/* Inline input (new file/folder) */
#fe-inline {
    padding: var(--space-2xs) var(--space-sm);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    border-bottom: 1px solid var(--color-border);
    background: var(--color-paper-3);
}
#fe-inline .inline-icon { font-size: var(--text-sm); flex-shrink: 0; }
#fe-inline input {
    flex-grow: 1;
    background: var(--color-paper);
    color: var(--color-ink);
    border: 1px solid var(--color-accent);
    border-radius: var(--radius-sm);
    padding: var(--space-3xs) var(--space-2xs);
    font-size: var(--text-sm);
    outline: none;
}
#fe-inline input:focus { box-shadow: 0 0 0 2px var(--color-accent-dim); }

/* Rename inline */
.fe-rename-input {
    background: var(--color-paper);
    color: var(--color-ink);
    border: 1px solid var(--color-accent);
    border-radius: var(--radius-sm);
    padding: 1px var(--space-2xs);
    font-size: var(--text-sm);
    outline: none;
    flex-grow: 1;
    min-width: 0;
}

/* Delete confirm strip */
.fe-confirm {
    display: flex;
    align-items: center;
    gap: var(--space-2xs);
    font-size: var(--text-xs);
    color: var(--color-red);
}
.fe-confirm button {
    font-size: 10px;
    padding: 1px var(--space-xs);
    border-radius: var(--radius-sm);
    margin: 0;
}
.fe-confirm .fc-yes { background: var(--color-red); color: oklch(100% 0 0); border: none; }
.fe-confirm .fc-no { background: transparent; color: var(--color-ink-2); border: 1px solid var(--color-border); }

#fe-list { flex-grow: 1; overflow-y: auto; padding: var(--space-2xs) 0; }

.fe-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-2xs) var(--space-sm);
    cursor: pointer;
    transition: background var(--dur-short) var(--ease-out);
    font-size: var(--text-sm);
    color: var(--color-ink);
    position: relative;
}
.fe-item:hover { background: var(--color-paper-3); }
.fe-item.is-dir .fe-name { color: var(--color-orange); font-weight: 500; }
.fe-icon { font-size: 14px; width: 18px; text-align: center; flex-shrink: 0; }
.fe-name { flex-grow: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.fe-size { font-size: 10px; color: var(--color-ink-muted); flex-shrink: 0; font-family: var(--font-mono); }
.fe-empty { padding: var(--space-xl) var(--space-sm); text-align: center; color: var(--color-ink-muted); font-size: var(--text-sm); }

/* File item context actions */
.fe-item-actions { display: none; gap: var(--space-3xs); flex-shrink: 0; }
.fe-item:hover .fe-item-actions { display: flex; }
.fe-item-actions button {
    background: transparent;
    border: none;
    color: var(--color-ink-muted);
    cursor: pointer;
    font-size: var(--text-xs);
    padding: 1px var(--space-2xs);
    border-radius: 2px;
    margin: 0;
    transition: all var(--dur-short) var(--ease-out);
}
.fe-item-actions button:hover { color: var(--color-ink); background: oklch(100% 0 0 / 0.04); }
.fe-item-actions .fe-delete:hover { color: var(--color-red); }

/* ═══════════════════════════════════════
   EDITOR
   ═══════════════════════════════════════ */
.editor-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    width: 100%;
    overflow: hidden;
}
.editor-bar {
    display: flex;
    align-items: center;
    padding: 0 var(--space-sm);
    height: 34px;
    background: var(--color-paper-3);
    border-bottom: 1px solid var(--color-border);
    gap: var(--space-xs);
    flex-shrink: 0;
    font-size: var(--text-xs);
}
.editor-bar .editor-path {
    color: var(--color-ink-2);
    font-family: var(--font-mono);
    flex-grow: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.editor-bar .editor-lang { color: var(--color-orange); font-weight: 500; flex-shrink: 0; }
.editor-bar .editor-status { color: var(--color-green); flex-shrink: 0; }

.editor-bar button {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-ink-2);
    font-size: var(--text-xs);
    padding: var(--space-3xs) var(--space-xs);
    margin: 0;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 500;
    font-family: var(--font-body);
}
.editor-bar .editor-save:hover {
    background: oklch(72% 0.17 155 / 0.08);
    color: var(--color-green);
    border-color: oklch(72% 0.17 155 / 0.3);
}

.editor-textarea {
    flex-grow: 1;
    resize: none;
    background: var(--color-paper);
    color: var(--color-ink);
    border: none;
    border-radius: 0;
    padding: var(--space-sm);
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    line-height: 1.7;
    tab-size: 4;
    white-space: pre;
    overflow: auto;
}
.editor-textarea:focus { box-shadow: none; border-color: transparent; }

/* Binary file preview */
.binary-preview {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    gap: var(--space-sm);
    color: var(--color-ink-2);
}
.binary-preview .bp-icon { font-size: 48px; opacity: 0.6; }
.binary-preview .bp-msg { font-size: var(--text-sm); }

/* ═══════════════════════════════════════
   TERMINAL
   ═══════════════════════════════════════ */
#terminal-wrapper {
    flex-grow: 1;
    padding: 0;
    position: relative;
    background: oklch(8% 0.01 260);
    min-height: 0;
}
.xterm { padding: var(--space-xs); }

/* ═══════════════════════════════════════
   SIDEBAR (Collaborators + Chat)
   ═══════════════════════════════════════ */
#users-sidebar {
    width: 250px;
    background: var(--color-paper-2);
    border-left: 1px solid var(--color-border);
    padding: var(--space-sm);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    flex-shrink: 0;
    overflow: hidden;
    transition: width var(--dur-med) var(--ease-out),
                padding var(--dur-med) var(--ease-out),
                opacity var(--dur-med) var(--ease-out);
}
#users-sidebar h3 {
    margin: 0;
    font-family: var(--font-display);
    font-size: var(--text-xs);
    font-weight: 600;
    letter-spacing: 0.06em;
    color: var(--color-ink-2);
    text-transform: uppercase;
    padding-bottom: var(--space-xs);
    border-bottom: 1px solid var(--color-border);
}
#users-section { display: flex; flex-direction: column; gap: var(--space-xs); flex-grow: 1; min-height: 0; overflow-y: auto; }
#users-list { display: flex; flex-direction: column; gap: var(--space-2xs); }

.user-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--text-sm);
    color: var(--color-ink);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-md);
    background: var(--color-paper-3);
    transition: background var(--dur-short) var(--ease-out);
}
.user-item:hover { background: var(--color-paper-4); }
.user-item .dot {
    width: 7px;
    height: 7px;
    background: var(--color-green);
    border-radius: 50%;
    box-shadow: 0 0 8px oklch(72% 0.17 155 / 0.5);
    flex-shrink: 0;
}
.user-item .user-name {
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex-grow: 1;
}
.user-item .user-tab-badge {
    font-size: 9px;
    font-family: var(--font-mono);
    background: var(--color-accent-dim);
    color: var(--color-accent);
    padding: 2px var(--space-2xs);
    border-radius: var(--radius-sm);
    font-weight: 600;
    flex-shrink: 0;
}

/* Sidebar tab switcher */
#sidebar-tabs {
    display: flex;
    gap: 2px;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--space-xs);
    margin-bottom: var(--space-2xs);
    flex-shrink: 0;
}
.sb-tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--color-ink-muted);
    font-size: var(--text-xs);
    font-family: var(--font-display);
    font-weight: 500;
    padding: 4px 6px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    transition: all var(--dur-short) var(--ease-out);
    white-space: nowrap;
}
.sb-tab-btn:hover {
    color: var(--color-ink);
    background: var(--color-paper-3);
}
.sb-tab-btn.active {
    color: var(--color-accent);
    background: var(--color-paper-3);
    font-weight: 600;
}
.sidebar-pane {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    min-height: 0;
    overflow: hidden;
}
.activity-badge, .chat-badge {
    background: var(--color-accent);
    color: oklch(100% 0 0);
    font-size: 9px;
    border-radius: 9px;
    padding: 1px 5px;
    line-height: 1;
    font-weight: 600;
}

/* ── Chat Pane ── */
#chat-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    flex-grow: 1;
    min-height: 0;
    overflow: hidden;
}
.chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: var(--space-2xs);
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
}
.chat-title {
    font-family: var(--font-display);
    font-size: var(--text-xs);
    font-weight: 600;
    letter-spacing: 0.06em;
    color: var(--color-ink-2);
}
.chat-status-pill {
    font-size: 10px;
    color: var(--color-green);
    font-family: var(--font-mono);
    font-weight: 600;
}
#chat-messages {
    display: flex;
    flex-direction: column;
    gap: 8px;
    overflow-y: auto;
    flex-grow: 1;
    padding: 4px 2px;
    scroll-behavior: smooth;
}
.chat-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    height: 100%;
    padding: var(--space-md) var(--space-xs);
    color: var(--color-ink-muted);
    user-select: none;
}
.chat-empty-icon {
    font-size: 26px;
    margin-bottom: var(--space-xs);
    opacity: 0.7;
}
.chat-empty-title {
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-ink-2);
    margin-bottom: 4px;
    font-family: var(--font-display);
}
.chat-empty-sub {
    font-size: 11px;
    line-height: 1.4;
    max-width: 190px;
}
.chat-msg {
    display: flex;
    flex-direction: column;
    gap: 3px;
    padding: 7px 10px;
    background: var(--color-paper-3);
    border-radius: var(--radius-md);
    font-size: 12px;
    line-height: 1.45;
    border: 1px solid var(--color-border);
    transition: all var(--dur-short) var(--ease-out);
    animation: chatFadeIn 0.15s ease-out;
}
@keyframes chatFadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}
.chat-msg:hover {
    border-color: var(--color-border-bright);
}
.chat-msg.self {
    background: oklch(0.25 0.04 250);
    border-color: oklch(0.38 0.08 250);
    margin-left: 10px;
}
.chat-msg.other {
    margin-right: 10px;
}
.chat-msg-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 6px;
    font-size: 10px;
}
.chat-msg-sender {
    font-weight: 600;
    font-family: var(--font-display);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    gap: 4px;
}
.chat-msg-sender.self {
    color: var(--color-ink);
}
.chat-msg-sender.self::after {
    content: "YOU";
    font-size: 8px;
    font-weight: 700;
    letter-spacing: 0.04em;
    background: var(--color-accent);
    color: oklch(100% 0 0);
    padding: 1px 4px;
    border-radius: 4px;
    line-height: 1.2;
}
.chat-msg-time {
    color: var(--color-ink-muted);
    font-family: var(--font-mono);
    font-size: 10px;
    white-space: nowrap;
}
.chat-msg-body {
    color: var(--color-ink);
    word-break: break-word;
    white-space: pre-wrap;
    font-family: var(--font-body);
}
#chat-input-container {
    display: flex;
    align-items: center;
    gap: 6px;
    padding-top: var(--space-xs);
    border-top: 1px solid var(--color-border);
    flex-shrink: 0;
}
#chat-input {
    flex: 1;
    min-width: 0;
    background: var(--color-paper-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-ink);
    font-size: 12px;
    font-family: var(--font-body);
    padding: 6px 10px;
    outline: none;
    transition: all var(--dur-short) var(--ease-out);
}
#chat-input:focus {
    border-color: var(--color-accent);
    background: var(--color-paper-2);
    box-shadow: 0 0 0 2px var(--color-accent-subtle);
}
#chat-send-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--color-accent);
    color: oklch(100% 0 0);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    flex-shrink: 0;
    transition: all var(--dur-short) var(--ease-out);
}
#chat-send-btn:hover {
    filter: brightness(1.15);
    transform: translateY(-1px);
}
#chat-send-btn:active {
    transform: translateY(0);
}

/* Activity Log Pane */
#activity-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}
.activity-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: var(--space-2xs);
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
}
.activity-title {
    font-family: var(--font-display);
    font-size: var(--text-xs);
    font-weight: 600;
    letter-spacing: 0.06em;
    color: var(--color-ink-2);
}
.activity-export-btn {
    background: var(--color-paper-3);
    border: 1px solid var(--color-border);
    color: var(--color-ink-2);
    font-size: 11px;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--dur-short) var(--ease-out);
    font-family: var(--font-body);
}
.activity-export-btn:hover {
    color: var(--color-accent);
    border-color: var(--color-accent);
    background: var(--color-paper-4);
}
#activity-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2xs);
    overflow-y: auto;
    flex-grow: 1;
}
.activity-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: var(--space-2xs) var(--space-xs);
    background: var(--color-paper-3);
    border-radius: var(--radius-sm);
    font-size: 11px;
    border-left: 2px solid var(--color-border);
    transition: border-color var(--dur-short) var(--ease-out);
}
.activity-item:hover {
    border-left-color: var(--color-accent);
}
.activity-item-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 10px;
}
.activity-type {
    font-weight: 600;
    color: var(--color-accent);
    font-family: var(--font-mono);
}
.activity-type.CONNECT { color: var(--color-green); }
.activity-type.DISCONNECT { color: var(--color-red); }
.activity-type.SAVE_FILE { color: var(--color-green); }
.activity-type.DELETE_FILE { color: var(--color-red); }
.activity-type.NEW_FILE, .activity-type.NEW_DIR { color: var(--color-orange); }
.activity-time {
    color: var(--color-ink-muted);
    font-family: var(--font-mono);
}
.activity-msg {
    color: var(--color-ink);
    word-break: break-all;
    line-height: 1.4;
}

/* ═══════════════════════════════════════
   STATUS BAR
   ═══════════════════════════════════════ */
#status-bar {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: 0 var(--space-sm);
    height: 26px;
    background: var(--color-paper-2);
    border-top: 1px solid var(--color-border);
    color: var(--color-ink-2);
    font-size: var(--text-xs);
    font-weight: 500;
    flex-shrink: 0;
}
#status-bar span { white-space: nowrap; }
#sb-connection { color: var(--color-green); }

/* ── Sidebar collapse ── */
#workspace.sidebar-collapsed #users-sidebar {
    width: 0;
    padding: 0;
    opacity: 0;
    border: none;
    overflow: hidden;
}

/* ═══════════════════════════════════════
   SCROLLBARS
   ═══════════════════════════════════════ */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
    background: oklch(50% 0.01 260 / 0.2);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover { background: oklch(50% 0.01 260 / 0.35); }

/* ═══════════════════════════════════════
   FOCUS VISIBILITY (a11y)
   ═══════════════════════════════════════ */
/* File item action download */
.fe-item-actions .fe-download:hover { color: var(--color-accent); }

/* ═══════════════════════════════════════
   CODEMIRROR INTEGRATION
   ═══════════════════════════════════════ */
.CodeMirror {
    height: 100% !important;
    flex-grow: 1;
    font-family: var(--font-mono) !important;
    font-size: var(--text-sm) !important;
    line-height: 1.6 !important;
    background: var(--color-paper) !important;
    color: var(--color-ink) !important;
}
.CodeMirror-gutters {
    background: var(--color-paper-2) !important;
    border-right: 1px solid var(--color-border) !important;
    white-space: nowrap;
}
.CodeMirror-linenumber {
    color: var(--color-ink-muted) !important;
    padding: 0 8px 0 4px !important;
}
.CodeMirror-cursor {
    border-left: 2px solid var(--color-accent) !important;
}
.CodeMirror-selected {
    background: var(--color-accent-dim) !important;
}
.CodeMirror-focused .CodeMirror-selected {
    background: var(--color-accent-dim) !important;
}
.CodeMirror-scroll {
    overflow-y: auto !important;
    overflow-x: auto !important;
}

/* ═══════════════════════════════════════
   MODAL / SHORTCUTS OVERLAY
   ═══════════════════════════════════════ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: oklch(10% 0.01 260 / 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}
.modal-box {
    background: var(--color-paper-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: 0 16px 40px oklch(0% 0 0 / 0.5);
    width: 90%;
    max-width: 520px;
    overflow: hidden;
    animation: modalPop 0.15s cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes modalPop {
    from { opacity: 0; transform: scale(0.96); }
    to { opacity: 1; transform: scale(1); }
}
.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid var(--color-border);
    background: var(--color-paper-3);
}
.modal-header h3 {
    margin: 0;
    font-size: var(--text-md);
    font-family: var(--font-display);
    color: var(--color-ink);
}
.modal-close {
    background: transparent;
    border: none;
    color: var(--color-ink-muted);
    font-size: var(--text-lg);
    cursor: pointer;
    padding: 0 var(--space-2xs);
    line-height: 1;
}
.modal-close:hover { color: var(--color-red); }
.modal-body {
    padding: var(--space-md);
    max-height: 70vh;
    overflow-y: auto;
}
.shortcuts-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--text-xs);
}
.shortcuts-table td {
    padding: var(--space-xs) 0;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-ink-2);
}
.shortcuts-table td:first-child {
    width: 45%;
    white-space: nowrap;
}
kbd {
    background: var(--color-paper-4);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 2px 6px;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--color-accent);
    box-shadow: 0 1px 1px oklch(0% 0 0 / 0.2);
}

/* ═══════════════════════════════════════
   CONFIRM MODAL
   ═══════════════════════════════════════ */
.confirm-modal-box { max-width: 420px; }
.confirm-message {
    font-size: var(--text-sm);
    color: var(--color-ink-2);
    line-height: 1.5;
}
.confirm-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    border-top: 1px solid var(--color-border);
    background: var(--color-paper-3);
}
.confirm-btn {
    border-radius: var(--radius-sm);
    padding: 7px 16px;
    font-size: var(--text-xs);
    font-weight: 500;
    cursor: pointer;
    border: 1px solid var(--color-border);
    background: var(--color-paper-3);
    color: var(--color-ink);
    font-family: var(--font-body);
    transition: all var(--dur-short) var(--ease-out);
}
.confirm-btn:hover { border-color: var(--color-accent); }
.confirm-ok { background: var(--color-accent); border-color: var(--color-accent); color: oklch(100% 0 0); }
.confirm-ok:hover { filter: brightness(1.1); }
.confirm-ok.danger { background: var(--color-red); border-color: var(--color-red); }

/* ═══════════════════════════════════════
   JOIN MODAL
   ═══════════════════════════════════════ */
.join-modal-box { max-width: 400px; }
.join-modal-box .modal-body { display: flex; flex-direction: column; gap: 6px; }
.join-session {
    font-size: var(--text-sm);
    color: var(--color-ink-2);
    margin: 0 0 var(--space-xs);
}
.join-session-id {
    font-family: var(--font-mono);
    color: var(--color-accent);
    font-weight: 600;
}
.join-name-input { font-family: var(--font-body); font-size: var(--text-sm); padding: 9px 12px; color: var(--color-ink); }
.join-name-input::placeholder { font-family: var(--font-body); }
.join-error { font-size: var(--text-xs); color: var(--color-red); }

/* ═══════════════════════════════════════
   SHARE MODAL SPECIFIC
   ═══════════════════════════════════════ */
.share-modal-box {
    max-width: 580px;
}
.share-section {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.share-label {
    display: block;
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-ink);
    font-family: var(--font-display);
    letter-spacing: 0.02em;
}
.share-input-group {
    display: flex;
    gap: var(--space-2xs);
    align-items: center;
}
.share-input {
    flex-grow: 1;
    background: var(--color-paper);
    color: var(--color-ink-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 7px 10px;
    font-size: var(--text-xs);
    font-family: var(--font-mono);
    outline: none;
    transition: all var(--dur-short) var(--ease-out);
}
.share-input:focus {
    border-color: var(--color-accent);
    color: var(--color-ink);
    box-shadow: 0 0 0 2px var(--color-accent-dim);
}
.share-cli {
    color: var(--color-orange);
    background: var(--color-paper-3);
}
.share-copy-btn {
    background: var(--color-paper-3);
    border: 1px solid var(--color-border);
    color: var(--color-ink);
    border-radius: var(--radius-sm);
    padding: 7px 14px;
    font-size: var(--text-xs);
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    transition: all var(--dur-short) var(--ease-out);
    font-family: var(--font-body);
}
.share-copy-btn:hover {
    background: var(--color-accent);
    color: oklch(100% 0 0);
    border-color: var(--color-accent);
}
.share-copy-btn.copied {
    background: var(--color-green);
    color: oklch(100% 0 0);
    border-color: var(--color-green);
}
.share-hint {
    display: block;
    font-size: 11px;
    color: var(--color-ink-muted);
}