/* =========================================================
   CONTENT STUDIO — chat composer, generated content, library
========================================================= */

/* ---------- layout ---------- */

.studio {
    max-width: 880px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
    min-height: calc(100vh - var(--topbar) - 220px);
}

.studio-thread {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 22px;
    padding: 6px 2px 10px;
}

/* ---------- empty state ---------- */

.studio-empty {
    text-align: center;
    padding: 28px 8px 8px;
}

.studio-empty-title {
    margin: 14px 0 8px;
    font-size: 26px;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--text);
}

.studio-empty-copy {
    max-width: 560px;
    margin: 0 auto;
    font-size: 13px;
    line-height: 1.6;
    color: var(--text-2);
}

.studio-suggestions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-top: 24px;
    text-align: left;
}

.studio-suggestion {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface);
    font: inherit;
    font-size: 12.5px;
    font-weight: 700;
    color: var(--text);
    cursor: pointer;
    transition: border-color var(--transition), background var(--transition), transform var(--transition);
}

.studio-suggestion:hover {
    border-color: var(--border-strong);
    background: var(--surface-soft);
    transform: translateY(-1px);
}

.studio-suggestion-kind {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--primary-dark);
}

/* ---------- messages ---------- */

.studio-turn {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.studio-msg.is-user {
    align-self: flex-end;
    max-width: 78%;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 4px;
}

.studio-msg.is-user .studio-bubble {
    padding: 10px 14px;
    border-radius: 14px 14px 4px 14px;
    background: var(--primary-gradient);
    color: #fff;
    font-size: 13px;
    line-height: 1.55;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.studio-msg-meta {
    font-size: 10.5px;
    color: var(--text-3);
}

.studio-msg.is-ai {
    display: flex;
    gap: 10px;
    align-items: flex-start;
}

.studio-avatar {
    flex: 0 0 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--primary-soft);
    position: relative;
}

.studio-avatar::after {
    content: "";
    position: absolute;
    inset: 8px;
    background: var(--primary-dark);
    -webkit-mask: var(--emblem-mask-image) center / contain no-repeat;
            mask: var(--emblem-mask-image) center / contain no-repeat;
}

.studio-reply {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.studio-result {
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
    padding: 14px 16px 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.studio-result-head {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
}

.studio-result-slot {
    margin-left: auto;
    font-size: 10.5px;
    color: var(--text-3);
}

.studio-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.studio-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12.5px;
    font-weight: 700;
    color: var(--text);
}

.studio-spinner {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    border: 2px solid var(--primary-soft);
    border-top-color: var(--primary);
    animation: studio-spin .8s linear infinite;
}

.studio-typing {
    display: inline-flex;
    gap: 4px;
    padding: 10px 12px;
    border-radius: 12px;
    background: var(--surface-soft);
    align-self: flex-start;
}

.studio-typing span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--text-3);
    animation: studio-bounce 1.1s infinite ease-in-out;
}

.studio-typing span:nth-child(2) { animation-delay: .15s; }
.studio-typing span:nth-child(3) { animation-delay: .3s; }

@keyframes studio-spin { to { transform: rotate(360deg); } }
@keyframes studio-bounce { 0%, 80%, 100% { opacity: .3; transform: translateY(0); } 40% { opacity: 1; transform: translateY(-3px); } }

@media (prefers-reduced-motion: reduce) {
    .studio-spinner, .studio-typing span, .cs-step.is-running .cs-step-icon { animation: none; }
}

/* ---------- composer ---------- */

.studio-composer {
    position: sticky;
    bottom: 12px;
    z-index: 5;
    border: 1px solid var(--border-strong);
    border-radius: 16px;
    background: var(--surface);
    box-shadow: var(--shadow-md);
    padding: 12px 12px 8px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.studio-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 16px;
}

.studio-control {
    display: flex;
    align-items: center;
    gap: 8px;
}

.studio-control[hidden] { display: none; }

.studio-control-label {
    font-size: 10px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--text-3);
}

.studio-seg {
    display: inline-flex;
    padding: 3px;
    gap: 2px;
    border-radius: 9px;
    background: var(--surface-soft);
    border: 1px solid var(--border);
}

.studio-seg-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 10px;
    border: 0;
    border-radius: 7px;
    background: transparent;
    font: inherit;
    font-size: 11.5px;
    font-weight: 700;
    color: var(--text-2);
    cursor: pointer;
    transition: background var(--transition), color var(--transition);
}

.studio-seg-btn svg { width: 13px; height: 13px; }

.studio-seg-btn:hover:not(:disabled) { color: var(--text); }

.studio-seg-btn.active {
    background: var(--surface);
    color: var(--primary-dark);
    box-shadow: var(--shadow-sm);
}

.studio-seg-btn:disabled {
    opacity: .4;
    cursor: not-allowed;
}

.studio-input-row {
    display: flex;
    align-items: flex-end;
    gap: 8px;
}

.studio-input-row textarea {
    flex: 1;
    min-height: 44px;
    max-height: 220px;
    resize: none;
    border: 1px solid var(--border);
    border-radius: 11px;
    padding: 11px 12px;
    font: inherit;
    font-size: 13.5px;
    line-height: 1.5;
    color: var(--text);
    background: var(--bg);
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.studio-input-row textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-soft);
}

.studio-send {
    height: 44px;
    padding: 0 16px;
    border-radius: 11px;
}

.studio-send:disabled { opacity: .55; cursor: not-allowed; }

.studio-more summary {
    cursor: pointer;
    font-size: 11.5px;
    font-weight: 700;
    color: var(--text-2);
    width: max-content;
}

.studio-more-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
    margin-top: 10px;
}

.studio-more-grid label {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 11px;
    font-weight: 700;
    color: var(--text-2);
}

.studio-more-grid em { font-weight: 500; font-style: normal; color: var(--text-3); }

.studio-more-grid input,
.studio-more-grid select {
    height: 34px;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0 9px;
    font: inherit;
    font-size: 12px;
    color: var(--text);
    background: var(--surface);
}

.studio-foot {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 10.5px;
    color: var(--text-3);
}

.studio-target {
    font-weight: 700;
    color: var(--text-2);
}

.studio-hint { margin-left: auto; }

.studio-clear {
    padding: 4px 8px;
    font-size: 11px;
}

/* ---------- generated content (chat, drawer) ---------- */

.cs-media {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--surface-soft);
    display: grid;
    place-items: center;
    min-height: 180px;
}

.cs-media img,
.cs-media video {
    display: block;
    width: 100%;
    max-height: 520px;
    object-fit: contain;
    background: #0d1b2a;
}

.cs-media-video video { max-height: 560px; }

.cs-media-note {
    font-size: 11px;
    color: var(--text-3);
}

.cs-copy {
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 13px;
    line-height: 1.65;
    color: var(--text);
}

.cs-copy-title {
    margin: 0;
    font-size: 17px;
    font-weight: 800;
    line-height: 1.35;
    letter-spacing: -0.01em;
}

.cs-copy-lede {
    margin: 0;
    color: var(--text-2);
    font-style: italic;
}

.cs-copy p { margin: 0 0 8px; }
.cs-copy ul, .cs-copy ol { margin: 0 0 8px; padding-left: 20px; }
.cs-copy h3, .cs-copy h4, .cs-copy h5, .cs-copy h6 { margin: 12px 0 6px; font-size: 14px; font-weight: 800; }

.cs-article {
    max-height: 460px;
    overflow: auto;
    padding-right: 6px;
}

.cs-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}

.cs-tag {
    padding: 3px 8px;
    border-radius: 999px;
    background: var(--primary-soft-2);
    color: var(--primary-dark);
    font-size: 11px;
    font-weight: 700;
}

.cs-kv {
    font-size: 12px;
    color: var(--text-2);
}

.cs-kv span {
    display: block;
    font-size: 10px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--text-3);
}

.cs-details summary {
    cursor: pointer;
    font-size: 11.5px;
    font-weight: 700;
    color: var(--text-2);
}

.cs-details p {
    margin: 6px 0 0;
    font-size: 12px;
    line-height: 1.6;
    color: var(--text-2);
    white-space: pre-wrap;
}

.cs-error {
    padding: 10px 12px;
    border-radius: var(--radius-md);
    background: var(--danger-soft);
    color: var(--danger);
    font-size: 12px;
    line-height: 1.5;
    overflow-wrap: anywhere;
}

.cs-muted {
    margin: 0;
    font-size: 12px;
    color: var(--text-3);
}

/* generation steps */

.cs-steps {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.cs-step {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--text-3);
}

.cs-step-icon {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    border: 2px solid var(--border-strong);
    flex: 0 0 auto;
}

.cs-step.is-running { color: var(--text); font-weight: 700; }
.cs-step.is-running .cs-step-icon { border-color: var(--primary-soft); border-top-color: var(--primary); animation: studio-spin .8s linear infinite; }
.cs-step.is-done { color: var(--text-2); }
.cs-step.is-done .cs-step-icon { border-color: var(--success); background: var(--success); box-shadow: inset 0 0 0 2px #fff; }
.cs-step.is-failed { color: var(--danger); }
.cs-step.is-failed .cs-step-icon { border-color: var(--danger); background: var(--danger); }

.cs-step-meta {
    font-size: 10px;
    color: var(--text-3);
    font-weight: 500;
}

.detail-label .status { margin-left: 6px; vertical-align: middle; }

/* ---------- library ---------- */

.library-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 14px;
}

.library-empty { grid-column: 1 / -1; }

.library-card {
    display: flex;
    flex-direction: column;
    padding: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--surface);
    overflow: hidden;
    text-align: left;
    font: inherit;
    cursor: pointer;
    transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.library-card:hover {
    border-color: var(--border-strong);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.library-card .cs-media {
    border-radius: 0;
    height: 160px;
    min-height: 0;
}

.library-card .cs-media img,
.library-card .cs-media video {
    height: 160px;
    max-height: none;
    object-fit: cover;
}

.cs-media-play {
    position: absolute;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: rgba(13, 27, 42, .6);
}

.cs-media-play::after {
    content: "";
    position: absolute;
    left: 13px;
    top: 10px;
    border-left: 11px solid #fff;
    border-top: 7px solid transparent;
    border-bottom: 7px solid transparent;
}

.library-text-thumb {
    height: 160px;
    padding: 14px;
    background: var(--identity-gradient);
    font-size: 11.5px;
    line-height: 1.55;
    color: var(--text-2);
    overflow: hidden;
}

.library-card-body {
    padding: 11px 12px 12px;
    display: flex;
    flex-direction: column;
    gap: 7px;
}

.library-card-title {
    font-size: 12.5px;
    font-weight: 800;
    color: var(--text);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.library-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 6px;
    font-size: 10.5px;
    color: var(--text-3);
}

/* ---------- small screens ---------- */

@media (max-width: 720px) {
    .studio-suggestions,
    .studio-more-grid { grid-template-columns: 1fr; }
    .studio-msg.is-user { max-width: 92%; }
    .studio-hint { display: none; }
    .studio-foot { flex-wrap: wrap; }
    .studio-clear { margin-left: auto; }
    .studio-result-slot { margin-left: 0; width: 100%; }
}