/* One workbench geometry for Messages, Skills and Files. */
:root {
    --workspace-width: clamp(340px, 36vw, 520px);
    --shell-inset: 16px;
    --shell-gap: 14px;
    --panel-radius: 22px;
    --glass-panel: rgba(26, 31, 43, .82);
    --glass-chrome: rgba(38, 44, 58, .76);
    --glass-edge: rgba(255, 255, 255, .095);
    --panel-shadow: 0 16px 45px #0002, inset 0 1px 0 #ffffff08;
}
html[data-theme="light"] {
    --glass-panel: rgba(255, 255, 255, .78);
    --glass-chrome: rgba(255, 255, 255, .68);
    --glass-edge: rgba(255, 255, 255, .9);
    --panel-shadow: 0 12px 36px #263c6410, 0 1px 3px #263c6408, inset 0 1px 0 #fff;
}
body.workspace-app {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', sans-serif;
    background: radial-gradient(ellipse at 8% 0%, #568dfa1b, transparent 48%),
                radial-gradient(ellipse at 95% 90%, #9b80ea12, transparent 50%), var(--bg);
}
#topbar {
    position: fixed; top: calc(12px + var(--viewport-top, 0px)); left: var(--shell-inset); right: var(--shell-inset);
    height: 54px; padding: 0 14px; display: flex; align-items: center; justify-content: space-between;
    background: var(--glass-chrome); border: 1px solid var(--glass-edge); border-radius: 18px;
    backdrop-filter: blur(28px) saturate(160%); -webkit-backdrop-filter: blur(28px) saturate(160%);
    box-shadow: 0 4px 20px #00000008, inset 0 1px 0 #ffffff08; z-index: 20;
}
.platform-wordmark { font-size: 15px; font-weight: 700; letter-spacing: -.5px; margin-right: 12px; white-space: nowrap; }
.platform-wordmark > span { font-size: 8px; font-weight: 600; letter-spacing: 1px; color: var(--text-muted); margin-left: 5px; vertical-align: middle; }
#project-btn { border-radius: 10px; width: 34px; height: 34px; padding: 8px; }
.pinned-project-chip { border-radius: 10px; min-height: 30px; padding-inline: 12px; }
.pinned-project-chip.active { box-shadow: inset 0 1px 0 #ffffff12; }
.topbar-avatar { border-radius: 50%; width: 28px; height: 28px; border: 2px solid var(--glass-edge); }
#workbench {
    position: fixed; top: calc(80px + var(--viewport-top, 0px)); left: var(--shell-inset); right: var(--shell-inset);
    height: calc(var(--app-height, 100dvh) - 96px - env(safe-area-inset-bottom, 0px));
    display: none; grid-template-columns: var(--workspace-width) minmax(0, 1fr); gap: var(--shell-gap);
    min-height: 0; isolation: isolate;
}
body.logged-in #workbench { display: grid; }
#workspace-column, #preview-panel, #skill-detail-panel {
    min-width: 0; min-height: 0; overflow: hidden; border-radius: var(--panel-radius);
    border: 1px solid var(--glass-edge); background: var(--glass-panel); box-shadow: var(--panel-shadow);
    backdrop-filter: blur(24px) saturate(140%); -webkit-backdrop-filter: blur(24px) saturate(140%);
}
#workspace-column { display: flex; flex-direction: column; }
#workspace-view { flex: 1; min-height: 0; min-width: 0; display: flex; flex-direction: column; overflow: hidden; }
.workspace-body { flex: 1; min-height: 0; overflow: hidden; }
#sidebar { display: flex; flex-direction: column; flex: 1; min-height: 0; width: 100%; overflow: hidden; background: transparent; }
#sidebar[data-mode="prompt"] { --sidebar-accent: var(--accent); --sidebar-border: var(--border); }
.pane-heading {
    min-height: 78px; height: 78px; flex-shrink: 0; padding: 18px 22px; display: flex; align-items: center;
    justify-content: space-between; gap: 12px; border-bottom: 1px solid var(--border); background: transparent;
}
.pane-heading h1 { font-size: 18px; font-weight: 650; color: var(--text); letter-spacing: -.5px; line-height: 1.3; }
.pane-heading p { margin-top: 4px; font-size: 11px; color: var(--text-muted); font-weight: 400; }
#editor-toolbar { display: flex; align-items: center; gap: 8px; flex-shrink: 0; padding: 12px 16px; font-size: 13px; font-weight: 600; border-bottom: 1px solid var(--border); }
#editor-toolbar[hidden] { display: none; }
#chat-messages { padding: 22px; }
#chat-messages > .system-msg:only-child { margin-top: clamp(24px, 12vh, 120px); text-align: center; color: var(--text-muted); line-height: 1.9; padding: 22px; }
#chat-messages > .system-msg:only-child::before { content: '✳'; display: grid; place-items: center; width: 56px; height: 56px; margin: 0 auto 18px; border-radius: 18px; color: var(--accent); font-size: 28px; background: var(--accent-soft); border: 1px solid var(--accent-border); box-shadow: 0 8px 24px #007aff0a; }
#chat-input-area { padding: 12px 16px 16px; border-top: 0; background: transparent; }
#chat-input-row { align-items: flex-end; gap: 8px; padding: 8px 10px; background: var(--surface); border: 1px solid var(--border-strong); border-radius: 19px; box-shadow: 0 4px 18px #0000000a, inset 0 1px 0 #ffffff08; }
#chat-input-row:focus-within { border-color: var(--accent-border); box-shadow: 0 0 0 3px var(--accent-soft); }
#chat-input { background: transparent; border: 0; border-radius: 0; padding: 8px 2px; min-height: 64px; max-height: 180px; box-shadow: none; font-size: 14px; }
#chat-input:focus { border: 0; box-shadow: none; outline: none; }
#image-upload-btn { border: 0; background: transparent; margin-bottom: 4px; }
#chat-send, #chat-stop { border-radius: 11px; margin-bottom: 4px; width: 32px; height: 32px; box-shadow: 0 3px 10px #007aff20; }
#chat-slash-row { margin-bottom: 8px; }
#auto-compact-hint { display: flex; align-items: center; padding: 0 6px; color: var(--text-faint); font-size: 10px; white-space: nowrap; }
#bottom-nav { position: relative; isolation: isolate; flex-shrink: 0; display: flex; align-items: center; justify-content: space-around; height: 66px; padding: 8px 12px; gap: 5px; border-top: 1px solid var(--border); background: var(--glass-chrome); }
.bottom-nav-item { flex: 1; height: 48px; border-radius: 13px; padding: 7px 8px; gap: 4px; transition: color .15s; }
.bottom-nav-item.active { background: var(--accent-soft); color: var(--accent); box-shadow: inset 0 1px 0 #ffffff08; }
.bottom-nav-item span { font-size: 10px; font-weight: 550; }
#preview-panel { position: relative; display: flex; flex-direction: column; }
#preview-status { min-width: 0; max-width: 100%; overflow-wrap: anywhere; font-size: 11px; color: var(--text-muted); display: flex; align-items: center; gap: 5px; }
#preview-status::before { content: ''; flex-shrink: 0; width: 5px; height: 5px; border-radius: 50%; background: var(--text-faint); }
#preview-status[data-state="ready"]::before { background: var(--ok); box-shadow: 0 0 0 3px color-mix(in srgb, var(--ok) 10%, transparent); }
.preview-actions button, .preview-actions a, #preview-toggle { border: 1px solid var(--border); background: var(--surface); color: var(--text); border-radius: 10px; padding: 7px 10px; font-size: 11px; cursor: pointer; text-decoration: none; white-space: nowrap; }
#preview-publish { background: var(--accent-soft) !important; color: var(--accent) !important; border-color: var(--accent-border) !important; font-weight: 550; }
.preview-actions { display: flex; align-items: center; gap: 6px; margin-left: auto; flex-shrink: 0; }
.preview-actions button, .preview-actions a { display: inline-flex; align-items: center; justify-content: center; height: 32px; padding: 7px 8px; }
.preview-actions svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.preview-actions :is(button, a):hover { background: var(--hover); }
#preview-toggle { display: none; }
#preview-device-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 20px; flex-shrink: 0; }
#preview-device-switch { display: flex; flex-shrink: 0; padding: 3px; gap: 3px; background: var(--surface-2); border: 1px solid var(--border); border-radius: 11px; }
#preview-device-switch button { display: flex; align-items: center; justify-content: center; gap: 6px; min-height: 30px; padding: 5px 12px; border: 1px solid transparent; border-radius: 8px; background: transparent; color: var(--text-muted); font-size: 11px; cursor: pointer; }
#preview-device-switch button[aria-pressed="true"] { background: var(--surface); color: var(--text); border-color: var(--border); box-shadow: 0 2px 5px #00000008; }
#preview-device-switch svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 1.6; }
#preview-device-size { margin-right: auto; font-size: 10px; color: var(--text-faint); font-variant-numeric: tabular-nums; white-space: nowrap; }
#preview-stage { flex: 1; min-height: 0; min-width: 0; position: relative; overflow: hidden; margin: 0 14px; border: 1px solid var(--border); border-radius: 15px; display: flex; align-items: center; justify-content: center; background: var(--surface-2); }
#preview-device { position: relative; flex: none; overflow: hidden; background: white; }
#preview-panel[data-preview-device="phone"] #preview-device { border-radius: 16px; box-shadow: 0 0 0 1px var(--border-strong), 0 10px 30px #0002; }
#preview-frame { position: absolute; top: 0; left: 0; border: 0; background: white; transform-origin: top left; }
#preview-device[hidden], #preview-frame[hidden], #preview-empty[hidden], #preview-open[hidden] { display: none; }
#preview-empty { margin: auto; max-width: 360px; padding: 32px; text-align: center; line-height: 1.8; color: var(--text-muted); font-size: 13px; }
#preview-help { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 4px 12px; padding: 10px 16px; font-size: 10px; color: var(--text-faint); text-align: center; }
#skill-detail-panel { display: none; flex-direction: column; }
body[data-active-view="skills"] #skill-detail-panel { display: flex; }
body[data-active-view="skills"] #preview-panel { display: none; }
.pane-empty { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 32px; }
.pane-empty-icon { display: grid; place-items: center; width: 68px; height: 68px; border: 1px solid var(--border); border-radius: 22px; background: var(--surface); color: var(--accent); box-shadow: var(--shadow-sm); margin-bottom: 24px; }
.pane-empty-icon svg { width: 30px; height: 30px; }
.pane-empty h2 { font-size: 20px; font-weight: 600; letter-spacing: -.5px; }
.pane-empty p { font-size: 13px; line-height: 1.9; color: var(--text-muted); margin-top: 10px; }
#files-panel { min-height: 0; padding: 0; margin: 0; max-width: none; }
#files-panel > .pane-heading { position: sticky; top: 0; z-index: 2; background: var(--glass-panel); backdrop-filter: blur(20px); }
#files-panel > .files-list { padding: 16px; }
.user-folder-head { border-radius: 12px; background: var(--surface); border: 1px solid var(--border); margin-bottom: 6px; }
.file-row { border-radius: 11px; }
.modal { backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); }
.workspace-app .modal-content { background: var(--glass-panel); border: 1px solid var(--glass-edge); border-radius: 26px; box-shadow: 0 24px 90px #0003, inset 0 1px 0 #ffffff15; backdrop-filter: blur(40px) saturate(150%); -webkit-backdrop-filter: blur(40px) saturate(150%); }
.settings-modal-content { padding: 26px; }
.settings-modal-header { padding-bottom: 20px; }
.settings-modal-header h3 { font-size: 20px; letter-spacing: -.5px; }
.settings-system-section { margin-top: 22px; }
.workspace-app :is(button, a, input, [contenteditable]):focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
body.embedded-preview #workbench { grid-template-columns: minmax(0, 1fr); }
body.embedded-preview #preview-panel, body.embedded-preview #preview-toggle { display: none !important; }
body.embedded-preview #skill-detail-panel { display: none; }
@media (max-width: 1100px) {
    #preview-device-size { display: none; }
}
@media (max-width: 768px) {
    :root { --shell-inset: 8px; --panel-radius: 18px; --shell-gap: 0px; }
    #topbar { top: calc(8px + var(--viewport-top, 0px)); height: 48px; padding: 0 10px; border-radius: 15px; }
    .platform-wordmark { font-size: 13px; margin-right: 4px; }
    .platform-wordmark > span { display: none; }
    #project-btn { width: 30px; height: 30px; }
    #workbench { top: calc(64px + var(--viewport-top, 0px)); height: calc(var(--app-height, 100dvh) - 72px - env(safe-area-inset-bottom, 0px)); grid-template-columns: minmax(0, 1fr); }
    #preview-panel, body[data-active-view="skills"] #skill-detail-panel { display: none; }
    #preview-toggle { display: block; padding: 6px 8px; }
    #preview-panel, #skill-detail-panel { position: absolute; inset: 0 0 66px; z-index: 5; }
    body.logged-in.show-preview #preview-panel { position: relative; display: flex; }
    body[data-active-view="skills"].skill-detail-open #skill-detail-panel { display: flex; }
    body.show-preview #workspace-view, body[data-active-view="skills"].skill-detail-open #workspace-view { visibility: hidden; }
    .pane-heading { height: 72px; min-height: 72px; padding: 16px 18px; }
    #chat-messages { padding: 18px 16px; }
    #chat-input-area { padding: 8px 12px 12px; }
    #chat-input { font-size: 16px; min-height: 48px; }
    #bottom-nav { padding: 8px; }
    #preview-device-toolbar { padding: 10px 12px; gap: 8px; }
    #preview-device-switch button { min-height: 34px; padding: 5px 10px; }
    #preview-stage { margin-inline: 8px; }
    #preview-help { padding: 8px; }
    .pane-empty { padding: 20px; }
}
@media (max-width: 370px) {
    .platform-wordmark { display: none; }
    #preview-device-switch button { gap: 4px; padding-inline: 5px; }
}
@media (prefers-reduced-motion: reduce) { .workspace-app * { scroll-behavior: auto !important; transition: none !important; animation: none !important; } }