:root { color-scheme: dark; }
* { font-family: 'Cairo', system-ui, -apple-system, sans-serif; }
code, pre, .mono { font-family: 'JetBrains Mono', ui-monospace, monospace; }

body { background: radial-gradient(1200px 600px at 80% -10%, rgba(139,92,246,.12), transparent 60%),
                   radial-gradient(900px 500px at -10% 110%, rgba(6,182,212,.10), transparent 60%), #0b0e14; }

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,.08); border-radius: 8px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,.15); }

.grad-text { background: linear-gradient(90deg,#a78bfa,#22d3ee); -webkit-background-clip: text; background-clip: text; color: transparent; }

.logo-orb { width: 34px; height: 34px; border-radius: 12px; display: grid; place-items: center; font-weight: 800; color: #fff;
  background: linear-gradient(135deg,#8b5cf6,#06b6d4); box-shadow: 0 8px 24px rgba(139,92,246,.35); position: relative; }
.logo-orb-lg { width: 72px; height: 72px; border-radius: 24px; font-size: 32px; animation: float 5s ease-in-out infinite; }
@keyframes float { 0%,100% { transform: translateY(0) } 50% { transform: translateY(-8px) } }

.btn-primary { display: flex; align-items: center; justify-content: center; gap: .5rem; padding: .65rem 1rem; border-radius: 14px; font-weight: 700;
  background: linear-gradient(135deg,#8b5cf6,#6d28d9); color: #fff; transition: .2s; box-shadow: 0 6px 20px rgba(139,92,246,.3); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 10px 28px rgba(139,92,246,.45); }

.icon-btn { width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center; color: #94a3b8; transition: .15s; }
.icon-btn:hover { background: rgba(255,255,255,.06); color: #e2e8f0; }

.side-link { width: 100%; display: flex; align-items: center; gap: .6rem; padding: .55rem .75rem; border-radius: 10px; font-size: .875rem; color: #cbd5e1; transition: .15s; }
.side-link:hover { background: rgba(255,255,255,.05); }
.side-link .badge { margin-inline-start: auto; }
.badge { font-size: 10px; padding: 1px 7px; border-radius: 999px; background: rgba(255,255,255,.08); color: #94a3b8; }

.conv-item { display: flex; align-items: center; gap: .5rem; padding: .55rem .7rem; border-radius: 10px; font-size: .84rem; color: #cbd5e1; cursor: pointer; transition: .15s; position: relative; }
.conv-item:hover { background: rgba(255,255,255,.05); }
.conv-item.active { background: rgba(139,92,246,.15); color: #fff; }
.conv-item .conv-title { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.conv-item .conv-actions { display: none; gap: 2px; }
.conv-item:hover .conv-actions { display: flex; }
.conv-item .conv-actions button { width: 26px; height: 26px; border-radius: 7px; color: #94a3b8; display: grid; place-items: center; font-size: 11px; }
.conv-item .conv-actions button:hover { background: rgba(255,255,255,.1); color: #fff; }
.conv-group { font-size: 11px; color: #64748b; padding: .8rem .7rem .3rem; font-weight: 700; letter-spacing: .3px; }

.chip { display: flex; align-items: center; gap: .45rem; padding: .4rem .75rem; border-radius: 10px; font-size: .82rem; font-weight: 600;
  background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.06); color: #e2e8f0; transition: .15s; white-space: nowrap; }
.chip:hover { background: rgba(255,255,255,.08); }

.menu { position: absolute; top: calc(100% + 6px); inset-inline-start: 0; min-width: 260px; background: #141926; border: 1px solid rgba(255,255,255,.08);
  border-radius: 14px; padding: .4rem; box-shadow: 0 20px 50px rgba(0,0,0,.5); z-index: 40; animation: pop .15s ease; }
@keyframes pop { from { opacity: 0; transform: translateY(-4px) scale(.98) } to { opacity: 1; transform: none } }
.menu-item { display: flex; align-items: flex-start; gap: .7rem; padding: .6rem .7rem; border-radius: 10px; cursor: pointer; transition: .12s; text-align: start; width: 100%; }
.menu-item:hover { background: rgba(255,255,255,.06); }
.menu-item.active { background: rgba(139,92,246,.15); }
.menu-item .mi-icon { width: 32px; height: 32px; border-radius: 9px; display: grid; place-items: center; flex-shrink: 0; font-size: 14px; }
.menu-item .mi-title { font-weight: 700; font-size: .85rem; }
.menu-item .mi-desc { font-size: .72rem; color: #94a3b8; line-height: 1.3; }

.suggestion { text-align: start; padding: 1rem; border-radius: 16px; background: rgba(255,255,255,.03); border: 1px solid rgba(255,255,255,.06); transition: .2s; }
.suggestion:hover { background: rgba(139,92,246,.08); border-color: rgba(139,92,246,.35); transform: translateY(-2px); }
.suggestion i { color: #a78bfa; margin-bottom: .4rem; }
.suggestion .s-title { font-weight: 700; font-size: .9rem; }
.suggestion .s-desc { font-size: .78rem; color: #94a3b8; margin-top: 2px; }

/* Messages */
.msg { display: flex; gap: .8rem; animation: fadeUp .25s ease; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(6px) } to { opacity: 1; transform: none } }
.msg .avatar { width: 34px; height: 34px; border-radius: 11px; display: grid; place-items: center; flex-shrink: 0; font-size: 14px; }
.msg.user .avatar { background: rgba(255,255,255,.08); color: #cbd5e1; }
.msg.assistant .avatar { background: linear-gradient(135deg,#8b5cf6,#06b6d4); color: #fff; }
.msg .bubble { flex: 1; min-width: 0; }
.msg.user .bubble .content { background: rgba(139,92,246,.14); border: 1px solid rgba(139,92,246,.2); border-radius: 16px; padding: .75rem 1rem; display: inline-block; max-width: 100%; white-space: pre-wrap; word-break: break-word; }
.msg .meta { font-size: 11px; color: #64748b; margin-bottom: .3rem; display: flex; align-items: center; gap: .5rem; }
.msg .actions { display: flex; gap: .2rem; margin-top: .4rem; opacity: 0; transition: .15s; }
.msg:hover .actions { opacity: 1; }
.msg .actions button { font-size: 11px; color: #94a3b8; padding: .25rem .5rem; border-radius: 7px; display: flex; gap: .3rem; align-items: center; }
.msg .actions button:hover { background: rgba(255,255,255,.06); color: #e2e8f0; }

/* Markdown prose */
.prose-nova { line-height: 1.8; font-size: .95rem; word-break: break-word; }
.prose-nova > *:first-child { margin-top: 0; }
.prose-nova > *:last-child { margin-bottom: 0; }
.prose-nova p { margin: .5rem 0; }
.prose-nova h1,.prose-nova h2,.prose-nova h3,.prose-nova h4 { font-weight: 800; margin: 1.1rem 0 .5rem; color: #f1f5f9; }
.prose-nova h1 { font-size: 1.4rem } .prose-nova h2 { font-size: 1.25rem } .prose-nova h3 { font-size: 1.1rem }
.prose-nova ul,.prose-nova ol { padding-inline-start: 1.4rem; margin: .5rem 0; }
.prose-nova ul { list-style: disc } .prose-nova ol { list-style: decimal }
.prose-nova li { margin: .2rem 0; }
.prose-nova a { color: #7dd3fc; text-decoration: underline; }
.prose-nova strong { color: #f8fafc; }
.prose-nova blockquote { border-inline-start: 3px solid #8b5cf6; padding-inline-start: .9rem; color: #cbd5e1; margin: .7rem 0; }
.prose-nova hr { border-color: rgba(255,255,255,.1); margin: 1rem 0; }
.prose-nova table { width: 100%; border-collapse: collapse; margin: .8rem 0; font-size: .87rem; display: block; overflow-x: auto; }
.prose-nova th,.prose-nova td { border: 1px solid rgba(255,255,255,.1); padding: .45rem .7rem; text-align: start; }
.prose-nova th { background: rgba(255,255,255,.05); font-weight: 700; }
.prose-nova code:not(pre code) { background: rgba(255,255,255,.08); padding: .1rem .4rem; border-radius: 6px; font-size: .85em; color: #f0abfc; direction: ltr; unicode-bidi: embed; }
.code-block { direction: ltr; text-align: left; margin: .8rem 0; border-radius: 12px; overflow: hidden; border: 1px solid rgba(255,255,255,.08); background: #0d1117; }
.code-block .code-head { display: flex; align-items: center; justify-content: space-between; padding: .4rem .8rem; background: rgba(255,255,255,.04); font-size: 11px; color: #94a3b8; font-family: 'JetBrains Mono', monospace; }
.code-block .code-head button { color: #94a3b8; display: flex; gap: .3rem; align-items: center; padding: .2rem .5rem; border-radius: 6px; }
.code-block .code-head button:hover { background: rgba(255,255,255,.08); color: #fff; }
.code-block pre { margin: 0; padding: .9rem 1rem; overflow-x: auto; font-size: .83rem; line-height: 1.6; background: transparent !important; }
.code-block pre code { background: transparent !important; padding: 0; }

.typing-cursor::after { content: '▍'; color: #a78bfa; animation: blink 1s steps(2) infinite; margin-inline-start: 2px; }
@keyframes blink { 50% { opacity: 0 } }
.thinking { display: inline-flex; gap: 4px; align-items: center; padding: .3rem 0; }
.thinking span { width: 7px; height: 7px; border-radius: 50%; background: #a78bfa; animation: bounce 1.2s infinite; }
.thinking span:nth-child(2) { animation-delay: .15s } .thinking span:nth-child(3) { animation-delay: .3s }
@keyframes bounce { 0%,80%,100% { transform: scale(.6); opacity: .4 } 40% { transform: scale(1); opacity: 1 } }

/* Composer */
.composer-wrap { background: linear-gradient(to top, #0b0e14 70%, transparent); padding-top: .5rem; }
.composer { display: flex; align-items: flex-end; gap: .5rem; background: #141926; border: 1px solid rgba(255,255,255,.08); border-radius: 20px; padding: .5rem .5rem .5rem 1rem; transition: .2s; box-shadow: 0 10px 40px rgba(0,0,0,.35); }
.composer:focus-within { border-color: rgba(139,92,246,.5); box-shadow: 0 0 0 4px rgba(139,92,246,.12), 0 10px 40px rgba(0,0,0,.35); }
.composer textarea { flex: 1; background: transparent; resize: none; border: none; outline: none; font-size: .95rem; line-height: 1.6; max-height: 220px; padding: .45rem 0; color: #e2e8f0; }
.composer textarea::placeholder { color: #64748b; }
.send-btn { width: 38px; height: 38px; border-radius: 12px; display: grid; place-items: center; color: #fff; background: linear-gradient(135deg,#8b5cf6,#6d28d9); transition: .15s; }
.send-btn:disabled { opacity: .35; cursor: not-allowed; }
.send-btn:not(:disabled):hover { transform: scale(1.05); }

/* Modal */
.modal-card { width: 100%; max-width: 560px; background: #141926; border: 1px solid rgba(255,255,255,.08); border-radius: 20px; padding: 1.25rem; box-shadow: 0 30px 80px rgba(0,0,0,.6); animation: pop .2s ease; }
.memory-item { display: flex; align-items: flex-start; gap: .6rem; padding: .6rem .75rem; border-radius: 10px; background: rgba(255,255,255,.03); border: 1px solid rgba(255,255,255,.05); font-size: .87rem; }
.memory-item button { color: #64748b; margin-inline-start: auto; flex-shrink: 0; }
.memory-item button:hover { color: #f87171; }
.stat-card { padding: 1rem; border-radius: 14px; background: rgba(255,255,255,.03); border: 1px solid rgba(255,255,255,.06); }
.stat-card .v { font-size: 1.6rem; font-weight: 800; }
.stat-card .l { font-size: .75rem; color: #94a3b8; }
.input-dark { width: 100%; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.08); border-radius: 10px; padding: .6rem .8rem; font-size: .9rem; outline: none; }
.input-dark:focus { border-color: rgba(139,92,246,.5); }

.toast { position: fixed; bottom: 90px; inset-inline-start: 50%; transform: translateX(50%); background: #1e293b; color: #fff; padding: .6rem 1rem; border-radius: 12px; font-size: .85rem; z-index: 60; box-shadow: 0 10px 30px rgba(0,0,0,.5); border: 1px solid rgba(255,255,255,.1); animation: pop .2s ease; }
html[dir="ltr"] .toast { transform: translateX(-50%); }

/* Sidebar mobile */
@media (max-width: 1023px) {
  .sidebar { position: fixed; inset-block: 0; inset-inline-start: 0; z-index: 40; transform: translateX(100%); transition: transform .25s ease; }
  html[dir="ltr"] .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: none !important; }
}

/* ===== v2 additions ===== */
.chip-static { cursor: default; }
.chip-static:hover { background: rgba(255,255,255,.04); }
.feature { padding: .5rem; border-radius: 10px; background: rgba(255,255,255,.02); border: 1px solid rgba(255,255,255,.04); display: flex; flex-direction: column; gap: .3rem; align-items: center; }
.feature i { color: #a78bfa; font-size: 14px; }

.files-panel { width: min(560px, 48%); flex-shrink: 0; display: flex; flex-direction: column; border-inline-start: 1px solid rgba(255,255,255,.06); background: #0d1117; }
.files-panel.hidden { display: none; }
@media (max-width: 1023px) { .files-panel { position: fixed; inset: 0; width: 100%; z-index: 45; } }
.tabs { display: flex; gap: 2px; background: rgba(255,255,255,.04); border-radius: 10px; padding: 2px; }
.tab { padding: .3rem .7rem; border-radius: 8px; font-size: .78rem; color: #94a3b8; display: flex; gap: .35rem; align-items: center; }
.tab.active { background: rgba(139,92,246,.2); color: #fff; }
.ft-dir { padding: .25rem .6rem; color: #94a3b8; font-weight: 700; display: flex; gap: .4rem; align-items: center; }
.ft-file { padding: .3rem .6rem .3rem 1.4rem; color: #cbd5e1; cursor: pointer; display: flex; gap: .4rem; align-items: center; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; direction: ltr; text-align: left; font-family: 'JetBrains Mono', monospace; }
.ft-file:hover { background: rgba(255,255,255,.05); }
.ft-file.active { background: rgba(139,92,246,.18); color: #fff; }
.ft-file i { font-size: 10px; color: #64748b; }
#file-view { background: #0d1117; line-height: 1.6; }
#file-view code { font-size: .78rem; }

.attachment { display: flex; align-items: center; gap: .4rem; font-size: .72rem; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.08); padding: .25rem .6rem; border-radius: 8px; direction: ltr; font-family: 'JetBrains Mono', monospace; }
.attachment button { color: #94a3b8; } .attachment button:hover { color: #f87171; }

.status-chip { display: inline-flex; gap: .4rem; align-items: center; font-size: 11px; color: #a78bfa; padding: .2rem .6rem; border-radius: 999px; background: rgba(139,92,246,.12); margin-top: .4rem; }

.provider-card { display: flex; gap: .7rem; align-items: center; padding: .6rem .75rem; border-radius: 12px; border: 1px solid rgba(255,255,255,.06); background: rgba(255,255,255,.03); cursor: pointer; transition: .15s; text-align: start; width: 100%; }
.provider-card:hover { background: rgba(255,255,255,.06); }
.provider-card.active { border-color: rgba(139,92,246,.6); background: rgba(139,92,246,.12); }
.provider-card .pc-name { font-weight: 700; font-size: .85rem; }
.provider-card .pc-note { font-size: .72rem; color: #94a3b8; }
.free-badge { font-size: 10px; background: rgba(16,185,129,.15); color: #34d399; padding: 1px 7px; border-radius: 999px; margin-inline-start: auto; }
.model-row { display: flex; align-items: center; gap: .6rem; padding: .5rem .7rem; border-radius: 10px; cursor: pointer; width: 100%; text-align: start; }
.model-row:hover { background: rgba(255,255,255,.06); }
.model-row.active { background: rgba(139,92,246,.15); }
.model-row .mr-id { font-family: 'JetBrains Mono', monospace; font-size: .75rem; direction: ltr; color: #e2e8f0; }
.model-row .mr-desc { font-size: .7rem; color: #94a3b8; }
.tier-tag { font-size: 9px; padding: 1px 6px; border-radius: 999px; margin-inline-start: auto; flex-shrink: 0; }
.tier-top { background: rgba(245,158,11,.15); color: #fbbf24; } .tier-fast { background: rgba(6,182,212,.15); color: #22d3ee; } .tier-other { background: rgba(255,255,255,.06); color: #94a3b8; }
.menu-scroll { max-height: 420px; overflow-y: auto; }
.menu-search { width: 100%; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.08); border-radius: 8px; padding: .4rem .6rem; font-size: .8rem; outline: none; margin-bottom: .3rem; direction: ltr; }
.menu-group { font-size: 10px; color: #64748b; padding: .5rem .7rem .2rem; font-weight: 700; }
.code-block .code-head .cb-actions { display: flex; gap: .2rem; }

/* offline indicator */
.net-badge { position: fixed; top: 8px; inset-inline-start: 50%; transform: translateX(50%); z-index: 70; font-size: 11px; padding: .25rem .7rem; border-radius: 999px; background: rgba(245,158,11,.15); color: #fbbf24; border: 1px solid rgba(245,158,11,.3); display: none; gap: .4rem; align-items: center; }
html[dir="ltr"] .net-badge { transform: translateX(-50%); }
.net-badge.show { display: inline-flex; }