:root {
  --accent: #8B5CF6;
  --accent-rgb: 139, 92, 246;
  --app-bg: #090B12;
  --sidebar-width: 296px;
  --text: #F6F7FB;
  --muted: #8D93A5;
  --muted-2: #687083;
  --line: rgba(255,255,255,.085);
  --line-strong: rgba(255,255,255,.14);
  --surface: color-mix(in srgb, var(--app-bg) 88%, white 12%);
  --surface-2: color-mix(in srgb, var(--app-bg) 82%, white 18%);
  --surface-3: color-mix(in srgb, var(--app-bg) 76%, white 24%);
  --danger: #EF4444;
  --warning: #F59E0B;
  --success: #22C55E;
  --radius: 16px;
  --shadow: 0 24px 70px rgba(0,0,0,.35);
}

* { box-sizing: border-box; }
html, body { min-height: 100%; }
body {
  margin: 0;
  background: var(--app-bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  overflow: hidden;
}
button, input, textarea { font: inherit; }
button { color: inherit; }
button:focus-visible, input:focus-visible, textarea:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.hidden { display: none !important; }
.muted { color: var(--muted); }

.auth-screen {
  min-height: 100vh;
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 20% 15%, rgba(var(--accent-rgb), .22), transparent 34%),
    radial-gradient(circle at 84% 84%, rgba(37,99,235,.14), transparent 32%),
    linear-gradient(145deg, #070811, #0D101A 55%, #080A10);
}
.auth-screen::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.8), transparent);
}
.auth-orb { position: absolute; border-radius: 999px; filter: blur(50px); opacity: .5; }
.auth-orb-one { width: 260px; height: 260px; background: var(--accent); left: 10%; top: 13%; }
.auth-orb-two { width: 220px; height: 220px; background: #2563EB; right: 12%; bottom: 10%; }
.auth-card {
  width: min(460px, calc(100vw - 32px));
  position: relative;
  z-index: 1;
  padding: 34px;
  border: 1px solid rgba(255,255,255,.11);
  border-radius: 28px;
  background: linear-gradient(145deg, rgba(18,22,34,.92), rgba(8,10,17,.93));
  box-shadow: 0 30px 100px rgba(0,0,0,.54), inset 0 1px rgba(255,255,255,.04);
  backdrop-filter: blur(24px);
}
.brand { display: flex; align-items: center; gap: 11px; min-width: 0; }
.brand img { width: 53px; height: 53px; filter: drop-shadow(0 0 18px rgba(var(--accent-rgb), .28)); }
.brand strong { display: block; font-size: 22px; letter-spacing: -.7px; white-space: nowrap; }
.brand strong span { color: var(--accent); }
.brand small { display: block; color: var(--muted); margin-top: 1px; white-space: nowrap; }
.brand-auth { margin-bottom: 32px; }
.brand-auth img { width: 62px; height: 62px; }
.brand-auth strong { font-size: 25px; }
.auth-heading { margin-bottom: 24px; }
.eyebrow { color: color-mix(in srgb, var(--accent) 86%, white 14%); font-size: 11px; letter-spacing: .14em; font-weight: 800; }
.auth-heading h1, .page-header h1 { margin: 8px 0 8px; font-size: 30px; letter-spacing: -1.1px; line-height: 1.12; }
.auth-heading p, .page-header p { color: var(--muted); margin: 0; line-height: 1.55; }
.auth-form { display: grid; gap: 15px; }
.field { display: grid; gap: 7px; }
.field span { font-size: 13px; color: #D5D8E1; font-weight: 650; }
.field input, .settings-form input, .hex-input, .admin-number {
  height: 48px;
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: 11px;
  background: rgba(3,5,10,.6);
  color: var(--text);
  padding: 0 14px;
  transition: .18s ease;
}
.field input:hover, .field input:focus, .settings-form input:hover, .settings-form input:focus, .hex-input:focus, .admin-number:focus { border-color: color-mix(in srgb, var(--accent) 70%, white 30%); box-shadow: 0 0 0 4px rgba(var(--accent-rgb), .09); outline: none; }
.button {
  border: 0;
  min-height: 42px;
  border-radius: 10px;
  padding: 0 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 750;
  cursor: pointer;
  transition: transform .15s ease, filter .15s ease, background .15s ease, border-color .15s ease;
}
.button:hover { transform: translateY(-1px); filter: brightness(1.07); }
.button:active { transform: translateY(0); }
.button:disabled { opacity: .55; cursor: wait; transform: none; }
.button-primary { background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 86%, white 14%), color-mix(in srgb, var(--accent) 76%, black 24%)); color: white; box-shadow: 0 10px 30px rgba(var(--accent-rgb), .2); }
.button-outline { background: rgba(255,255,255,.025); border: 1px solid color-mix(in srgb, var(--accent) 54%, rgba(255,255,255,.17) 46%); color: color-mix(in srgb, var(--accent) 68%, white 32%); }
.button-large { min-height: 50px; margin-top: 6px; }
.button-gold { color: #F8D36E; border: 1px solid rgba(245,158,11,.47); background: rgba(245,158,11,.08); }
.button-danger { color: #FF7777; border: 1px solid rgba(239,68,68,.52); background: rgba(239,68,68,.1); }
.button-orange { color: #FDBA74; border: 1px solid rgba(249,115,22,.5); background: rgba(249,115,22,.1); }
.text-button { width: 100%; margin-top: 17px; border: 0; background: none; color: color-mix(in srgb, var(--accent) 62%, white 38%); cursor: pointer; font-weight: 700; }
.auth-trust { color: var(--muted-2); font-size: 11px; text-align: center; margin-top: 25px; padding-top: 19px; border-top: 1px solid var(--line); }
.auth-trust span { color: var(--success); }

.app-shell { display: grid; grid-template-columns: var(--sidebar-width) minmax(0,1fr); height: 100vh; background: var(--app-bg); }
.sidebar {
  position: relative;
  z-index: 30;
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 20px 18px 18px;
  border-right: 1px solid var(--line);
  background:
    radial-gradient(circle at 10% 0%, rgba(var(--accent-rgb), .08), transparent 26%),
    color-mix(in srgb, var(--app-bg) 94%, black 6%);
  transition: width .25s ease, transform .25s ease;
}
.sidebar-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.icon-button { width: 40px; height: 40px; border-radius: 10px; border: 1px solid transparent; background: transparent; cursor: pointer; color: #A8AFC0; font-size: 20px; display: grid; place-items: center; transition: .16s; }
.icon-button:hover { background: rgba(255,255,255,.055); border-color: var(--line); color: white; }
.sidebar-toggle { width: 32px; height: 32px; font-size: 23px; border-color: var(--line); }
.new-chat { width: 100%; min-height: 45px; margin-bottom: 14px; font-size: 14px; }
.new-chat span { font-size: 18px; }
.sidebar-search { min-height: 43px; display: flex; align-items: center; gap: 9px; padding: 0 12px; border: 1px solid var(--line); background: rgba(255,255,255,.025); border-radius: 11px; margin-bottom: 18px; }
.sidebar-search span { color: var(--muted); font-size: 20px; }
.sidebar-search input { width: 100%; border: 0; background: transparent; color: white; outline: none; min-width: 0; }
.sidebar-search input::placeholder { color: var(--muted-2); }
.main-nav { display: grid; gap: 6px; }
.nav-item { min-height: 44px; display: flex; align-items: center; gap: 13px; padding: 0 14px; border: 0; border-radius: 10px; background: transparent; color: #A8AFC0; cursor: pointer; text-align: left; font-weight: 650; }
.nav-item:hover { background: rgba(255,255,255,.04); color: white; }
.nav-item.active { color: color-mix(in srgb, var(--accent) 58%, white 42%); background: linear-gradient(90deg, rgba(var(--accent-rgb),.19), rgba(var(--accent-rgb),.08)); box-shadow: inset 3px 0 var(--accent); }
.nav-icon { width: 22px; text-align: center; font-size: 19px; }
.nav-divider { height: 1px; background: var(--line); margin: 9px 5px; }
.sidebar-spacer { flex: 1; min-height: 14px; }
.pro-card, .usage-card { border: 1px solid var(--line); border-radius: 13px; background: linear-gradient(145deg, rgba(255,255,255,.045), rgba(255,255,255,.015)); padding: 15px; margin-top: 12px; }
.pro-card-title { color: color-mix(in srgb, var(--accent) 63%, white 37%); font-weight: 800; }
.pro-card p { color: var(--muted); font-size: 12px; line-height: 1.55; margin: 9px 0 14px; }
.pro-card .button { width: 100%; min-height: 37px; font-size: 12px; justify-content: space-between; }
.usage-top { display: flex; justify-content: space-between; color: var(--muted); font-size: 11px; }
.usage-top span:last-child { color: color-mix(in srgb, var(--accent) 64%, white 36%); font-weight: 800; }
.usage-value { margin: 7px 0 9px; color: var(--muted); }
.usage-value strong { color: white; font-size: 23px; }
.progress { height: 5px; background: rgba(255,255,255,.07); border-radius: 99px; overflow: hidden; }
.progress span { display: block; height: 100%; width: 0%; background: var(--accent); box-shadow: 0 0 16px var(--accent); transition: width .25s ease; }
.user-card { margin-top: 13px; min-height: 67px; width: 100%; display: flex; align-items: center; gap: 10px; background: rgba(255,255,255,.035); border: 1px solid var(--line); border-radius: 13px; padding: 9px 10px; cursor: pointer; text-align: left; }
.user-card img { width: 40px; height: 40px; }
.user-card-copy { min-width: 0; flex: 1; }
.user-card-copy strong, .user-card-copy small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.user-card-copy strong { font-size: 13px; }
.user-card-copy small { font-size: 10px; color: var(--muted); margin-top: 4px; }
.plan-badge { font-size: 9px; background: rgba(var(--accent-rgb),.19); color: color-mix(in srgb, var(--accent) 62%, white 38%); border: 1px solid rgba(var(--accent-rgb),.3); border-radius: 6px; padding: 4px 6px; font-weight: 900; }

.workspace { min-width: 0; height: 100vh; position: relative; overflow: hidden; background:
  radial-gradient(circle at 50% 0%, rgba(var(--accent-rgb),.07), transparent 32%),
  var(--app-bg);
}
.view { height: 100%; }
.chat-view { display: grid; grid-template-rows: 72px minmax(0,1fr) auto; }
.chat-header { min-width: 0; display: flex; align-items: center; justify-content: space-between; padding: 0 28px; border-bottom: 1px solid var(--line); background: rgba(5,7,12,.28); backdrop-filter: blur(18px); }
.chat-header > div { display: flex; align-items: center; gap: 12px; min-width: 0; }
.chat-title-input { max-width: 430px; min-width: 170px; width: min(43vw,430px); color: white; border: 1px solid transparent; background: transparent; font-size: 16px; font-weight: 780; padding: 8px 9px; border-radius: 8px; }
.chat-title-input:hover, .chat-title-input:focus { border-color: var(--line); background: rgba(255,255,255,.03); outline: none; }
.model-pill { white-space: nowrap; font-size: 10px; color: color-mix(in srgb, var(--accent) 64%, white 36%); background: rgba(var(--accent-rgb),.11); border: 1px solid rgba(var(--accent-rgb),.18); padding: 5px 8px; border-radius: 99px; font-weight: 800; }
.mobile-menu { display: none; }
.header-actions { display: flex; }
.danger-hover:hover { color: #FF7878; background: rgba(239,68,68,.08); }
.messages { overflow-y: auto; padding: 36px clamp(24px,7vw,120px) 26px; scroll-behavior: smooth; }
.messages::-webkit-scrollbar, .account-view::-webkit-scrollbar, .admin-view::-webkit-scrollbar { width: 8px; }
.messages::-webkit-scrollbar-thumb, .account-view::-webkit-scrollbar-thumb, .admin-view::-webkit-scrollbar-thumb { background: rgba(255,255,255,.08); border-radius: 99px; }
.empty-chat { min-height: 100%; max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding-bottom: 50px; }
.hero-logo { width: 92px; height: 92px; border-radius: 28px; display: grid; place-items: center; margin-bottom: 22px; background: radial-gradient(circle at 40% 30%, rgba(var(--accent-rgb),.25), rgba(var(--accent-rgb),.04)); border: 1px solid rgba(var(--accent-rgb),.28); box-shadow: 0 22px 65px rgba(var(--accent-rgb),.13); }
.hero-logo.small { width: 70px; height: 70px; border-radius: 22px; }
.hero-logo img { width: 76px; height: 76px; }
.hero-logo.small img { width: 56px; height: 56px; }
.empty-chat h1 { font-size: clamp(29px,4vw,43px); letter-spacing: -1.8px; margin: 9px 0 9px; }
.empty-chat > p { max-width: 610px; color: var(--muted); line-height: 1.6; margin: 0; }
.prompt-grid { width: 100%; display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 11px; margin-top: 32px; }
.prompt-grid button { padding: 16px; min-height: 78px; border-radius: 13px; border: 1px solid var(--line); background: linear-gradient(145deg, rgba(255,255,255,.035), rgba(255,255,255,.015)); color: white; text-align: left; cursor: pointer; }
.prompt-grid button:hover { border-color: rgba(var(--accent-rgb),.32); background: rgba(var(--accent-rgb),.055); transform: translateY(-1px); }
.prompt-grid strong, .prompt-grid span { display: block; }
.prompt-grid strong { font-size: 13px; margin-bottom: 7px; }
.prompt-grid span { color: var(--muted); font-size: 11px; }
.message-row { max-width: 900px; margin: 0 auto 24px; display: flex; gap: 12px; align-items: flex-start; }
.message-row.user { justify-content: flex-end; }
.message-avatar { flex: 0 0 35px; width: 35px; height: 35px; border-radius: 12px; background: rgba(var(--accent-rgb),.12); border: 1px solid rgba(var(--accent-rgb),.2); padding: 3px; }
.message-bubble { max-width: min(760px,82%); border-radius: 16px; padding: 15px 17px; line-height: 1.68; font-size: 14px; white-space: pre-wrap; word-break: break-word; }
.message-row.assistant .message-bubble { background: linear-gradient(145deg, rgba(255,255,255,.055), rgba(255,255,255,.025)); border: 1px solid var(--line); }
.message-row.user .message-bubble { background: linear-gradient(135deg, rgba(var(--accent-rgb),.86), rgba(var(--accent-rgb),.58)); box-shadow: 0 12px 35px rgba(var(--accent-rgb),.13); }
.message-meta { font-size: 9px; color: var(--muted-2); margin-top: 6px; }
.message-row.user .message-meta { color: rgba(255,255,255,.6); text-align: right; }
.typing { display: inline-flex; gap: 4px; align-items: center; height: 20px; }
.typing span { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); animation: bounce 1s infinite alternate; }
.typing span:nth-child(2){ animation-delay:.15s}.typing span:nth-child(3){animation-delay:.3s}
@keyframes bounce { to { transform: translateY(-5px); opacity: .5; } }
.composer-wrap { padding: 0 clamp(24px,7vw,120px) 15px; }
.composer { max-width: 900px; margin: 0 auto; border: 1px solid var(--line-strong); border-radius: 17px; background: linear-gradient(145deg, rgba(255,255,255,.055), rgba(255,255,255,.025)); box-shadow: 0 20px 60px rgba(0,0,0,.2); padding: 12px 13px 10px; }
.composer:focus-within { border-color: rgba(var(--accent-rgb),.4); box-shadow: 0 0 0 4px rgba(var(--accent-rgb),.06), 0 20px 60px rgba(0,0,0,.2); }
.composer textarea { width: 100%; min-height: 31px; max-height: 180px; resize: none; border: 0; outline: none; background: transparent; color: white; line-height: 1.45; padding: 3px 3px 10px; }
.composer textarea::placeholder { color: var(--muted-2); }
.composer-bottom { display: flex; justify-content: space-between; align-items: center; }
.composer-tools { color: var(--muted); font-size: 10px; display: flex; gap: 7px; align-items: center; }
.deepseek-dot { width: 7px; height: 7px; border-radius: 50%; background: #3B82F6; box-shadow: 0 0 12px #3B82F6; }
.send-button { width: 39px; height: 39px; border-radius: 11px; border: 0; color: white; background: var(--accent); cursor: pointer; box-shadow: 0 10px 30px rgba(var(--accent-rgb),.25); }
.send-button:hover { filter: brightness(1.12); }
.composer-wrap > p { text-align: center; font-size: 9px; color: var(--muted-2); margin: 8px 0 0; }

.account-view, .admin-view { overflow-y: auto; padding: 24px 28px 50px; }
.page-header { min-height: 74px; display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; margin-bottom: 20px; }
.page-header h1 { font-size: 29px; margin-top: 5px; }
.payment-warning { min-width: min(550px,47vw); display: flex; align-items: center; gap: 13px; padding: 13px 15px; border-radius: 12px; border: 1px solid rgba(245,158,11,.26); background: linear-gradient(90deg, rgba(245,158,11,.09), rgba(245,158,11,.025)); }
.payment-warning > span { color: #FBBF24; font-size: 22px; }
.payment-warning div { flex: 1; min-width: 0; }
.payment-warning strong, .payment-warning small { display: block; }
.payment-warning strong { color: #F8CF67; font-size: 12px; }
.payment-warning small { color: var(--muted); margin-top: 4px; font-size: 10px; }
.payment-warning .button { white-space: nowrap; min-height: 37px; font-size: 11px; }
.account-layout { display: grid; grid-template-columns: minmax(360px,.78fr) minmax(630px,1.22fr); gap: 14px; align-items: start; }
.account-column { display: grid; gap: 14px; }
.panel-card { border: 1px solid var(--line); background: linear-gradient(145deg, rgba(255,255,255,.045), rgba(255,255,255,.018)); border-radius: 14px; box-shadow: inset 0 1px rgba(255,255,255,.025); }
.panel-title { display: flex; align-items: flex-start; gap: 11px; padding: 17px 18px 12px; }
.panel-title h2 { margin: 0; font-size: 15px; letter-spacing: -.3px; }
.panel-title p { color: var(--muted); margin: 5px 0 0; font-size: 10px; }
.panel-icon { width: 28px; height: 28px; border-radius: 9px; display: grid; place-items: center; color: color-mix(in srgb, var(--accent) 70%, white 30%); background: rgba(var(--accent-rgb),.1); border: 1px solid rgba(var(--accent-rgb),.16); }
.settings-form { padding: 0 18px 18px; }
.settings-form > label { display: grid; grid-template-columns: 1fr minmax(200px,1.1fr); gap: 18px; align-items: center; padding: 14px 0; border-top: 1px solid var(--line); }
.settings-form label strong, .settings-form label small { display: block; }
.settings-form label strong { font-size: 12px; }
.settings-form label small { color: var(--muted); font-size: 9px; margin-top: 4px; }
.settings-form input { height: 40px; font-size: 12px; }
.form-actions { display: flex; justify-content: flex-end; padding-top: 12px; border-top: 1px solid var(--line); }
.form-actions.split { justify-content: space-between; }
.form-actions .button { min-height: 39px; font-size: 11px; }
.compact-form > label { padding: 11px 0; }
.theme-form { padding: 0 18px 18px; }
.color-setting { border-top: 1px solid var(--line); padding: 14px 0 10px; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.color-setting strong, .color-setting small { display: block; }
.color-setting strong { font-size: 12px; }
.color-setting small { color: var(--muted); font-size: 9px; margin-top: 4px; }
.color-controls { display: flex; align-items: center; gap: 8px; }
.hex-input { width: 115px; height: 39px; font-size: 11px; }
input[type="color"] { width: 42px; height: 39px; border: 1px solid var(--line-strong); border-radius: 9px; padding: 4px; background: rgba(0,0,0,.25); cursor: pointer; }
.swatches { display: flex; justify-content: flex-end; gap: 8px; margin: -2px 0 9px; }
.swatches button { width: 29px; height: 29px; border-radius: 8px; background: var(--swatch); border: 2px solid transparent; cursor: pointer; box-shadow: inset 0 0 0 1px rgba(255,255,255,.16); }
.swatches button.selected { border-color: white; box-shadow: 0 0 0 3px rgba(var(--accent-rgb),.2); }
.plans-card { padding-bottom: 14px; }
.plan-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 10px; padding: 0 14px; }
.plan-card { position: relative; min-width: 0; padding: 18px 15px 15px; border: 1px solid var(--line); border-radius: 12px; background: rgba(0,0,0,.16); }
.plan-card.featured { border-color: color-mix(in srgb, var(--accent) 65%, white 35%); box-shadow: 0 0 0 1px rgba(var(--accent-rgb),.15), 0 18px 40px rgba(var(--accent-rgb),.08); }
.plan-card.active-plan { border-color: var(--success); box-shadow: 0 0 0 1px rgba(34,197,94,.15); }
.plan-kicker { font-size: 9px; letter-spacing: .12em; color: color-mix(in srgb, var(--accent) 65%, white 35%); font-weight: 900; }
.plan-card h3 { margin: 8px 0 3px; font-size: 16px; }
.plan-card > p { margin: 0; color: var(--muted); font-size: 9px; }
.price { margin: 16px 0 15px; display: flex; align-items: baseline; gap: 4px; }
.price strong { font-size: 25px; letter-spacing: -.8px; }
.price span { color: var(--muted); font-size: 9px; }
.plan-card ul { list-style: none; padding: 0; margin: 0 0 17px; display: grid; gap: 9px; }
.plan-card li { color: #C8CCD7; font-size: 9px; line-height: 1.4; }
.plan-card li::before { content: "✓"; color: color-mix(in srgb, var(--accent) 65%, white 35%); margin-right: 7px; }
.plan-card .button { width: 100%; min-height: 37px; font-size: 10px; }
.popular-badge { position: absolute; right: 10px; top: 8px; padding: 4px 6px; border-radius: 6px; background: var(--accent); color: white; font-size: 8px; font-weight: 800; }
.inline-warning { margin: 10px 14px 0; padding: 11px 13px; border: 1px solid rgba(245,158,11,.26); background: rgba(245,158,11,.055); border-radius: 10px; display: flex; gap: 10px; align-items: center; }
.inline-warning > span { color: #FBBF24; font-size: 20px; }
.inline-warning strong, .inline-warning small { display: block; }
.inline-warning strong { color: #F5C95F; font-size: 10px; }
.inline-warning small { color: var(--muted); margin-top: 3px; font-size: 9px; }
.preview-card { padding-bottom: 14px; }
.theme-preview { display: grid; grid-template-columns: 32% 68%; min-height: 230px; margin: 0 14px; border-radius: 13px; overflow: hidden; border: 1px solid rgba(var(--accent-rgb),.56); box-shadow: inset 0 0 40px rgba(var(--accent-rgb),.04); }
.preview-sidebar { display: flex; flex-direction: column; gap: 13px; padding: 15px; border-right: 1px solid var(--line); background: rgba(0,0,0,.2); color: var(--muted); font-size: 9px; }
.preview-brand { display: flex; align-items: center; gap: 7px; color: white; font-weight: 800; font-size: 11px; }
.preview-brand img { width: 28px; height: 28px; }
.preview-sidebar button { border: 0; background: var(--accent); color: white; border-radius: 6px; min-height: 30px; font-size: 9px; font-weight: 750; }
.preview-chat { padding: 17px; position: relative; min-width: 0; }
.preview-chat > strong { font-size: 10px; }
.preview-bubble { margin-top: 30px; display: flex; gap: 8px; align-items: flex-start; }
.preview-bubble img { width: 28px; height: 28px; }
.preview-bubble p { margin: 0; padding: 10px 12px; background: rgba(255,255,255,.055); border: 1px solid var(--line); border-radius: 9px; font-size: 9px; line-height: 1.5; }
.preview-bubble span { color: var(--muted); }
.preview-input { position: absolute; left: 17px; right: 17px; bottom: 16px; min-height: 31px; padding: 0 8px 0 11px; border: 1px solid var(--line); border-radius: 8px; color: var(--muted); display: flex; align-items: center; justify-content: space-between; font-size: 8px; }
.preview-input b { width: 23px; height: 23px; display: grid; place-items: center; background: var(--accent); color: white; border-radius: 7px; }

.admin-header { align-items: center; }
.secure-pill { border: 1px solid rgba(34,197,94,.16); background: rgba(34,197,94,.055); color: #65D884; border-radius: 9px; padding: 10px 12px; font-size: 10px; font-weight: 700; }
.secure-pill span { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--success); box-shadow: 0 0 9px var(--success); margin-right: 6px; }
.admin-search-card { padding: 16px 18px; margin-bottom: 14px; }
.admin-search-card > label { display: block; font-size: 12px; font-weight: 800; margin-bottom: 10px; }
.admin-search-card form { display: flex; gap: 12px; }
.admin-search-input { flex: 1; height: 44px; border: 1px solid var(--line-strong); background: rgba(0,0,0,.19); border-radius: 10px; display: flex; align-items: center; gap: 10px; padding: 0 13px; }
.admin-search-input span { color: var(--muted); }
.admin-search-input input { flex: 1; min-width: 0; color: white; border: 0; outline: 0; background: transparent; }
.admin-empty { min-height: 360px; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; margin-bottom: 14px; }
.admin-empty h2 { margin: 13px 0 6px; font-size: 18px; }
.admin-empty p { color: var(--muted); max-width: 450px; font-size: 11px; line-height: 1.55; }
.user-summary { display: flex; align-items: center; padding: 18px; gap: 17px; margin-bottom: 12px; }
.avatar-letter { width: 68px; height: 68px; border-radius: 50%; display: grid; place-items: center; color: color-mix(in srgb, var(--accent) 66%, white 34%); border: 1px solid rgba(var(--accent-rgb),.55); background: rgba(var(--accent-rgb),.08); font-size: 22px; font-weight: 800; }
.user-summary-copy { flex: 1; min-width: 0; }
.user-summary-copy h2 { margin: 0 0 5px; font-size: 19px; overflow: hidden; text-overflow: ellipsis; }
.user-summary-copy p { margin: 0 0 10px; color: var(--muted); font-size: 9px; }
.user-summary-copy > div { display: flex; gap: 9px; align-items: center; color: var(--muted); font-size: 9px; }
.status-badge { padding: 4px 7px; border-radius: 6px; font-weight: 800; }
.status-badge.active { color: #61DC82; background: rgba(34,197,94,.1); border: 1px solid rgba(34,197,94,.18); }
.status-badge.suspended { color: #FDBA74; background: rgba(249,115,22,.1); border: 1px solid rgba(249,115,22,.2); }
.summary-plan { min-width: 165px; border: 1px solid var(--line); border-radius: 11px; padding: 12px 13px; background: rgba(0,0,0,.18); }
.summary-plan small, .summary-plan strong, .summary-plan span { display: block; }
.summary-plan small { color: var(--muted); font-size: 9px; }
.summary-plan strong { color: color-mix(in srgb, var(--accent) 58%, white 42%); margin: 4px 0 7px; }
.summary-plan span { color: var(--muted); font-size: 9px; }
.admin-stats { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 10px; margin-bottom: 12px; }
.stat-card { padding: 16px; }
.stat-card small, .stat-card strong { display: block; }
.stat-card small { color: #C8CCD7; font-size: 9px; }
.stat-card strong { margin: 12px 0 7px; font-size: 20px; color: color-mix(in srgb, var(--accent) 58%, white 42%); }
.stat-card p { margin: 0; color: var(--muted); font-size: 9px; line-height: 1.5; }
.admin-actions { margin-bottom: 12px; }
.admin-actions-grid { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 10px; padding: 0 14px 14px; }
.admin-actions-grid article { min-height: 190px; padding: 15px; border: 1px solid var(--line); border-radius: 11px; background: rgba(0,0,0,.16); display: flex; flex-direction: column; }
.admin-actions-grid h3 { font-size: 12px; margin: 0 0 9px; }
.admin-actions-grid p { color: var(--muted); font-size: 9px; line-height: 1.5; margin: 0 0 14px; }
.admin-actions-grid .button { margin-top: auto; min-height: 37px; font-size: 10px; }
.admin-number { height: 38px; font-size: 11px; margin-bottom: 9px; }
.danger-card { border-color: rgba(239,68,68,.18) !important; }
.switch-row { margin-top: auto; display: flex; gap: 8px; align-items: center; font-size: 9px; cursor: pointer; }
.switch-row input { display: none; }
.switch { width: 34px; height: 19px; border-radius: 99px; background: #333846; position: relative; transition: .18s; }
.switch::after { content: ""; position: absolute; width: 15px; height: 15px; border-radius: 50%; background: white; left: 2px; top: 2px; transition: .18s; }
.switch-row input:checked + .switch { background: var(--accent); }
.switch-row input:checked + .switch::after { left: 17px; }
.audit-card { padding-bottom: 13px; }
.audit-list { padding: 0 14px; display: grid; gap: 7px; }
.audit-item { display: grid; grid-template-columns: 30px 1fr auto; gap: 10px; align-items: center; padding: 10px; border: 1px solid var(--line); border-radius: 9px; background: rgba(0,0,0,.12); }
.audit-icon { width: 30px; height: 30px; border-radius: 8px; display: grid; place-items: center; background: rgba(var(--accent-rgb),.1); color: color-mix(in srgb, var(--accent) 65%, white 35%); }
.audit-copy strong, .audit-copy small { display: block; }
.audit-copy strong { font-size: 10px; }
.audit-copy small { color: var(--muted); font-size: 8px; margin-top: 3px; }
.audit-time { color: var(--muted); font-size: 8px; }

.toast-stack { position: fixed; z-index: 1000; top: 18px; right: 18px; display: grid; gap: 9px; width: min(360px,calc(100vw - 36px)); }
.toast { padding: 13px 14px; border-radius: 11px; background: #151923; border: 1px solid var(--line-strong); box-shadow: var(--shadow); display: flex; align-items: flex-start; gap: 10px; animation: toastIn .2s ease; font-size: 12px; line-height: 1.45; }
.toast.success { border-color: rgba(34,197,94,.27); }
.toast.error { border-color: rgba(239,68,68,.35); }
.toast strong { display: block; }
@keyframes toastIn { from { transform: translateY(-8px); opacity: 0; } }
.modal-backdrop { position: fixed; z-index: 900; inset: 0; display: grid; place-items: center; background: rgba(0,0,0,.68); backdrop-filter: blur(7px); }
.modal-card { width: min(420px,calc(100vw - 30px)); padding: 24px; border: 1px solid var(--line-strong); background: #11141D; border-radius: 18px; box-shadow: var(--shadow); text-align: center; }
.modal-icon { width: 50px; height: 50px; border-radius: 15px; display: grid; place-items: center; margin: 0 auto 13px; background: rgba(239,68,68,.1); border: 1px solid rgba(239,68,68,.2); color: #FF7777; font-size: 24px; font-weight: 900; }
.modal-card h2 { margin: 0 0 8px; font-size: 19px; }
.modal-card p { color: var(--muted); margin: 0 0 21px; font-size: 11px; line-height: 1.55; }
.modal-actions { display: flex; gap: 10px; justify-content: center; }

.sidebar.collapsed { width: 82px; padding-inline: 13px; }
.app-shell:has(.sidebar.collapsed) { grid-template-columns: 82px minmax(0,1fr); }
.sidebar.collapsed .brand div, .sidebar.collapsed .sidebar-search input, .sidebar.collapsed .nav-item > span:last-child, .sidebar.collapsed .pro-card, .sidebar.collapsed .usage-card, .sidebar.collapsed .user-card-copy, .sidebar.collapsed .plan-badge { display: none; }
.sidebar.collapsed .brand img { width: 45px; height: 45px; }
.sidebar.collapsed .sidebar-top { justify-content: center; }
.sidebar.collapsed .sidebar-toggle { position: absolute; top: 23px; right: -14px; background: #11141D; z-index: 2; transform: rotate(180deg); }
.sidebar.collapsed .new-chat { font-size: 0; padding: 0; }
.sidebar.collapsed .new-chat span { font-size: 23px; }
.sidebar.collapsed .sidebar-search { justify-content: center; padding: 0; }
.sidebar.collapsed .nav-item { justify-content: center; padding: 0; }
.sidebar.collapsed .user-card { justify-content: center; padding: 8px; }

@media (max-width: 1180px) {
  .account-layout { grid-template-columns: 1fr; }
  .account-column-wide { grid-row: 1; }
  .account-column { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .account-column .panel-card:last-child { grid-column: 1/-1; }
  .account-column-wide { display: grid; grid-template-columns: 1fr; }
  .admin-actions-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .admin-stats { grid-template-columns: repeat(2,minmax(0,1fr)); }
}

@media (max-width: 840px) {
  body { overflow: hidden; }
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: fixed; top: 0; bottom: 0; left: 0; width: 296px; transform: translateX(-105%); box-shadow: 30px 0 70px rgba(0,0,0,.4); }
  .sidebar.mobile-open { transform: translateX(0); }
  .sidebar-toggle { display: none; }
  .workspace { width: 100vw; }
  .mobile-menu { display: grid; }
  .chat-header { padding: 0 14px; }
  .chat-title-input { width: min(45vw,290px); min-width: 120px; }
  .model-pill { display: none; }
  .messages, .composer-wrap { padding-left: 14px; padding-right: 14px; }
  .account-view, .admin-view { padding: 18px 14px 40px; }
  .page-header { display: block; }
  .payment-warning { min-width: 0; margin-top: 15px; }
  .account-column { grid-template-columns: 1fr; }
  .account-column .panel-card:last-child { grid-column: auto; }
  .plan-grid { grid-template-columns: 1fr; }
  .theme-preview { min-height: 210px; }
  .admin-actions-grid { grid-template-columns: 1fr; }
  .admin-stats { grid-template-columns: 1fr 1fr; }
  .user-summary { align-items: flex-start; flex-wrap: wrap; }
  .summary-plan { width: 100%; }
}

@media (max-width: 570px) {
  .auth-card { padding: 26px 20px; }
  .prompt-grid { grid-template-columns: 1fr; }
  .empty-chat { justify-content: flex-start; padding-top: 30px; }
  .empty-chat h1 { font-size: 29px; }
  .message-bubble { max-width: 88%; }
  .header-actions .icon-button { width: 35px; }
  .settings-form > label { grid-template-columns: 1fr; gap: 8px; }
  .color-setting { align-items: flex-start; flex-direction: column; }
  .color-controls { width: 100%; }
  .hex-input { flex: 1; }
  .swatches { justify-content: flex-start; flex-wrap: wrap; }
  .theme-preview { grid-template-columns: 38% 62%; }
  .payment-warning { flex-wrap: wrap; }
  .payment-warning .button { width: 100%; }
  .admin-search-card form { flex-direction: column; }
  .admin-stats { grid-template-columns: 1fr; }
  .user-summary-copy h2 { font-size: 14px; }
  .page-header h1 { font-size: 25px; }
}

.chat-list-section { min-height: 0; margin-top: 14px; display: flex; flex-direction: column; }
.chat-list-heading { display: flex; justify-content: space-between; color: var(--muted-2); font-size: 9px; font-weight: 850; letter-spacing: .09em; padding: 0 10px 8px; }
.chat-list { display: grid; gap: 5px; max-height: min(29vh,290px); overflow-y: auto; padding-right: 2px; }
.chat-list::-webkit-scrollbar { width: 4px; }
.chat-list::-webkit-scrollbar-thumb { background: rgba(255,255,255,.08); border-radius: 99px; }
.chat-list-item { min-width: 0; width: 100%; display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 5px; border: 1px solid transparent; border-radius: 9px; background: transparent; padding: 9px 8px 9px 11px; cursor: pointer; text-align: left; }
.chat-list-item:hover { background: rgba(255,255,255,.035); border-color: var(--line); }
.chat-list-item.active { background: rgba(var(--accent-rgb),.1); border-color: rgba(var(--accent-rgb),.18); }
.chat-list-copy { min-width: 0; }
.chat-list-copy strong, .chat-list-copy small { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.chat-list-copy strong { font-size: 11px; font-weight: 700; }
.chat-list-copy small { font-size: 8px; color: var(--muted-2); margin-top: 4px; }
.chat-pin { color: color-mix(in srgb, var(--accent) 65%, white 35%); font-size: 12px; }
.sidebar.collapsed .chat-list-heading, .sidebar.collapsed .chat-list-copy, .sidebar.collapsed .chat-pin { display: none; }
.sidebar.collapsed .chat-list-item { min-height: 38px; padding: 0; display: grid; place-items: center; }
.sidebar.collapsed .chat-list-item::after { content: "◌"; color: var(--muted); }

/* v1.2 sidebar refresh */
:root { --sidebar-width: 278px; }

.sidebar {
  padding: 14px 12px 12px;
  background: #0a0c12;
}
.sidebar-brand img { width: 40px; height: 40px; }
.sidebar-brand strong { font-size: 15px; letter-spacing: -.35px; }
.sidebar-brand small { font-size: 11px; }
.sidebar-top { margin-bottom: 10px; }
.sidebar-toggle { width: 30px; height: 30px; font-size: 20px; }

.sidebar-action {
  width: 100%; min-height: 44px; border: 1px solid transparent; background: transparent; color: #fff;
  display: flex; align-items: center; gap: 12px; padding: 0 12px; border-radius: 12px; cursor: pointer;
  font-weight: 700; margin: 6px 0 8px;
}
.sidebar-action:hover { background: rgba(255,255,255,.05); }
.sidebar-action span:first-child { width: 20px; text-align: center; color: #E8ECF4; }

.main-nav { gap: 4px; }
.nav-item {
  min-height: 42px; padding: 0 12px; border-radius: 12px; color: #ECEEF5; font-size: 14px; font-weight: 650;
}
.nav-item:hover { background: rgba(255,255,255,.05); }
.nav-item.active {
  color: #fff; background: rgba(255,255,255,.07); box-shadow: none;
}
.nav-icon { width: 20px; font-size: 17px; color: #D7DCE8; }

.compact-search {
  min-height: 42px; margin: 10px 0 12px; border-radius: 12px; background: rgba(255,255,255,.03);
}
.compact-search span { font-size: 17px; }
.compact-search input { font-size: 14px; }

.chat-groups {
  min-height: 0; flex: 1; overflow-y: auto; padding-right: 2px; display: grid; gap: 12px; margin-top: 2px;
}
.chat-groups::-webkit-scrollbar { width: 6px; }
.chat-groups::-webkit-scrollbar-thumb { background: rgba(255,255,255,.08); border-radius: 999px; }
.chat-group { display: grid; gap: 6px; }
.chat-group-title {
  color: rgba(255,255,255,.95); font-size: 13px; font-weight: 800; padding: 0 6px;
}
.chat-list { max-height: none; gap: 4px; padding-right: 0; }
.chat-list-item {
  min-height: 40px; padding: 10px 11px; border-radius: 12px; border: 1px solid transparent;
}
.chat-list-item:hover { background: rgba(255,255,255,.045); border-color: transparent; }
.chat-list-item.active { background: rgba(255,255,255,.08); border-color: transparent; }
.chat-list-copy strong { font-size: 13px; font-weight: 600; }
.chat-list-copy small { font-size: 11px; color: #9298A7; margin-top: 3px; }
.chat-list-empty {
  color: var(--muted); font-size: 12px; line-height: 1.45; padding: 6px 10px 4px;
}
.chat-pin { font-size: 13px; opacity: .9; }

.usage-card-compact { margin-top: 0; padding: 12px; border-radius: 14px; }
.usage-card-compact .usage-top { font-size: 12px; }
.usage-card-compact .usage-value { margin: 5px 0 8px; }
.usage-card-compact .usage-value strong { font-size: 20px; }

.user-menu-wrap { position: relative; margin-top: 10px; }
.user-card {
  margin-top: 0; min-height: 64px; padding: 10px 11px; border-radius: 14px; background: rgba(255,255,255,.04);
}
.user-card img { width: 38px; height: 38px; }
.user-card-copy strong { font-size: 13px; }
.user-card-copy small { font-size: 11px; margin-top: 2px; }
.plan-badge { font-size: 10px; padding: 5px 7px; }
.user-caret { color: var(--muted); font-size: 14px; }

.user-dropdown {
  position: absolute; left: 0; right: 0; bottom: calc(100% + 8px); z-index: 40; padding: 8px;
  border: 1px solid var(--line-strong); border-radius: 14px; background: #11151d; box-shadow: 0 16px 48px rgba(0,0,0,.45);
  display: grid; gap: 4px;
}
.user-dropdown-item {
  min-height: 40px; border: 0; border-radius: 10px; background: transparent; text-align: left; padding: 0 12px;
  color: #EEF1F7; cursor: pointer; font-weight: 600;
}
.user-dropdown-item:hover { background: rgba(255,255,255,.06); }
.user-dropdown-item.danger { color: #FF8F8F; }
.user-dropdown-divider { height: 1px; background: var(--line); margin: 4px 2px; }

.sidebar.collapsed { width: 82px; padding-inline: 10px; }
.app-shell:has(.sidebar.collapsed) { grid-template-columns: 82px minmax(0,1fr); }
.sidebar.collapsed .sidebar-brand div,
.sidebar.collapsed .sidebar-action span:last-child,
.sidebar.collapsed .nav-item span:last-child,
.sidebar.collapsed .compact-search input,
.sidebar.collapsed .chat-group-title,
.sidebar.collapsed .chat-list-copy,
.sidebar.collapsed .usage-card-compact,
.sidebar.collapsed .user-card-copy,
.sidebar.collapsed .plan-badge,
.sidebar.collapsed .user-caret { display: none; }
.sidebar.collapsed .sidebar-action,
.sidebar.collapsed .nav-item,
.sidebar.collapsed .user-card { justify-content: center; padding-inline: 0; }
.sidebar.collapsed .compact-search { justify-content: center; padding: 0; }
.sidebar.collapsed .chat-list-item { min-height: 38px; padding: 0; display: grid; place-items: center; }
.sidebar.collapsed .chat-list-item .chat-pin { display: none; }
.sidebar.collapsed .chat-list-item::after { content: '◌'; color: var(--muted); }
.sidebar.collapsed .user-dropdown { left: calc(100% + 10px); right: auto; bottom: 0; width: 200px; }

@media (max-width: 840px) {
  .sidebar { width: 280px; padding: 14px 12px 12px; }
  .user-dropdown { bottom: auto; top: calc(100% + 8px); }
}