/* ═══════════════════════════════════════════════
   MSBrOSs v5 — Material Design 3 × Luxury Dark
   ═══════════════════════════════════════════════ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;900&family=Outfit:wght@300;400;700;900&display=swap');

:root {
  /* M3 Tonal Palette */
  --md-primary: #4FC3F7;
  --md-on-primary: #003a52;
  --md-primary-container: #004d6e;
  --md-secondary: #FFD700;
  --md-tertiary: #7C4DFF;
  --md-error: #FF5252;

  /* Surfaces */
  --md-bg: #080B10;
  --md-surface: rgba(255,255,255,0.04);
  --md-surface-2: rgba(255,255,255,0.07);
  --md-surface-3: rgba(255,255,255,0.10);
  --md-outline: rgba(79,195,247,0.2);
  --md-outline-hi: rgba(79,195,247,0.5);

  /* Text */
  --md-on-bg: #E2EEFF;
  --md-on-surface: rgba(226,238,255,0.87);
  --md-on-surface-dim: rgba(226,238,255,0.38);

  /* Shape */
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-xl: 36px;
  --radius-full: 9999px;

  /* Elevation shadows */
  --elev-1: 0 2px 8px rgba(0,0,0,.4), 0 0 0 1px var(--md-outline);
  --elev-2: 0 6px 20px rgba(0,0,0,.5), 0 0 0 1px var(--md-outline), 0 0 30px rgba(79,195,247,.06);
  --elev-3: 0 12px 40px rgba(0,0,0,.6), 0 0 0 1px var(--md-outline-hi), 0 0 60px rgba(79,195,247,.1);

  /* Spacing */
  --nav-h: 72px;
  --sidebar-w: 260px;

  /* Typography */
  --font: 'Inter', 'Outfit', system-ui, sans-serif;
}

/* ── Reset ─────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--md-bg);
  color: var(--md-on-bg);
  height: 100dvh;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── Animated BG ───────────────────────────── */
#bg-canvas { position: fixed; inset: 0; z-index: 0; opacity: .4; }
.bg-overlay {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background: radial-gradient(ellipse 80% 60% at 50% -10%, rgba(79,195,247,.12), transparent),
              radial-gradient(ellipse 50% 40% at 90% 80%, rgba(124,77,255,.08), transparent);
}

/* ── Navigation ────────────────────────────── */
.topbar {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--nav-h); z-index: 100;
  display: flex; align-items: center; gap: 8px; padding: 0 24px;
  background: rgba(8,11,16,.8);
  backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid var(--md-outline);
}
.logo {
  font-family: 'Outfit', sans-serif;
  font-size: 22px; font-weight: 900;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, #fff 0%, var(--md-primary) 60%, var(--md-secondary) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  margin-right: 8px;
  padding-right: 4px; /* Fix webkit-background-clip cutoff */
}
.mi {
  font-size: 13px; font-weight: 500; letter-spacing: .3px;
  color: var(--md-on-surface); padding: 8px 18px;
  border-radius: var(--radius-full); cursor: pointer;
  transition: background .2s, color .2s;
  border: none; background: transparent;
}
.mi:hover { background: var(--md-surface-2); color: #fff; }
.sb {
  font-size: 12px; font-weight: 600; letter-spacing: .5px;
  padding: 8px 20px; border-radius: var(--radius-full); cursor: pointer;
  background: linear-gradient(135deg, var(--md-primary), #0099cc);
  color: var(--md-on-primary); border: none;
  box-shadow: 0 0 20px rgba(79,195,247,.3);
  transition: transform .2s, box-shadow .2s;
}
.sb:hover { transform: translateY(-1px); box-shadow: 0 0 30px rgba(79,195,247,.5); }

/* ── Layout Shell ──────────────────────────── */
.main {
  position: fixed; top: var(--nav-h); left: 0; right: 0; bottom: 0;
  display: flex; z-index: 1;
}

/* ── Sidebar ───────────────────────────────── */
.sidebar {
  position: fixed;
  top: var(--nav-h); left: 0; bottom: 0;
  width: var(--sidebar-w); z-index: 95;
  background: rgba(8,11,16,.96);
  backdrop-filter: blur(30px);
  border-right: 1px solid var(--md-outline);
  display: flex; flex-direction: column;
  transform: translateX(-100%);
  transition: transform .35s cubic-bezier(.4,0,.2,1);
  box-shadow: 10px 0 40px rgba(0,0,0,.5);
}
.sidebar.open { transform: translateX(0); }

.sh { padding: 20px 16px 12px; }
.btn-n {
  width: 100%; padding: 14px 20px;
  background: var(--md-surface-2); color: var(--md-primary);
  border: 1px solid var(--md-outline); border-radius: var(--radius-lg);
  font-family: var(--font); font-size: 14px; font-weight: 600;
  cursor: pointer; letter-spacing: .3px;
  transition: all .2s cubic-bezier(.4,0,.2,1);
  display: flex; align-items: center; justify-content: center; gap: 8px;
}
.btn-n:hover { background: var(--md-primary-container); border-color: var(--md-primary); box-shadow: 0 0 20px rgba(79,195,247,.2); }

.cl { flex: 1; overflow-y: auto; padding: 8px 12px; }
.ci-item {
  padding: 12px 16px; border-radius: var(--radius-md);
  font-size: 13px; font-weight: 500; color: var(--md-on-surface-dim);
  cursor: pointer; transition: all .15s; margin-bottom: 2px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.ci-item:hover { background: var(--md-surface-2); color: var(--md-on-surface); }
.ci-item.active { background: var(--md-primary-container); color: var(--md-primary); }

.sf {
  padding: 16px; font-size: 10px; font-weight: 600;
  color: var(--md-on-surface-dim); letter-spacing: 2px;
  text-align: center; text-transform: uppercase;
  border-top: 1px solid var(--md-outline);
}

/* ── Content Area ──────────────────────────── */
.content {
  flex: 1; display: flex; flex-direction: column;
  overflow: hidden; position: relative;
}

/* ── Welcome Hero ──────────────────────────── */
.wc {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 40px 24px 160px;
  text-align: center; position: relative;
}

.wc-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 16px; border-radius: var(--radius-full);
  background: rgba(255,215,0,.08); border: 1px solid rgba(255,215,0,.25);
  color: var(--md-secondary); font-size: 12px; font-weight: 600; letter-spacing: 1.5px;
  margin-bottom: 32px;
}
.wc-badge::before { content: '⬡'; font-size: 14px; }

.wc h1 {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(56px, 10vw, 120px);
  font-weight: 900; letter-spacing: -3px; line-height: .95;
  background: linear-gradient(135deg, #fff 0%, var(--md-primary) 50%, var(--md-secondary) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 40px rgba(79,195,247,.3));
  margin-bottom: 20px;
  padding-right: 6px; /* Fix webkit-background-clip cutoff */
}

.wc-sub {
  font-size: clamp(14px, 2vw, 18px); font-weight: 400;
  color: var(--md-on-surface-dim); max-width: 480px;
  line-height: 1.6; margin-bottom: 48px;
}

/* Feature cards grid */
.wc-cards {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 16px; max-width: 720px; width: 100%;
}
.wc-card {
  background: var(--md-surface); border: 1px solid var(--md-outline);
  border-radius: var(--radius-lg); padding: 24px 20px;
  text-align: left; box-shadow: var(--elev-1);
  transition: all .3s cubic-bezier(.4,0,.2,1);
  cursor: default;
}
.wc-card:hover { background: var(--md-surface-2); box-shadow: var(--elev-2); transform: translateY(-3px); }
.wc-card .card-icon {
  width: 40px; height: 40px; border-radius: var(--radius-sm);
  background: var(--md-primary-container); border: 1px solid var(--md-outline);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; margin-bottom: 14px;
  box-shadow: 0 0 15px rgba(79,195,247,.15);
}
.wc-card h3 { font-size: 14px; font-weight: 700; color: var(--md-secondary); margin-bottom: 6px; letter-spacing: .3px; }
.wc-card p { font-size: 12px; color: var(--md-on-surface-dim); line-height: 1.5; }

/* ── Chat Messages ─────────────────────────── */
.cm {
  flex: 1; overflow-y: auto; padding: 24px;
  display: none; flex-direction: column; gap: 16px;
}
.cm::-webkit-scrollbar { width: 4px; }
.cm::-webkit-scrollbar-thumb { background: var(--md-outline); border-radius: 2px; }

.msg {
  display: flex; gap: 12px; max-width: 75%;
  animation: msgIn .3s cubic-bezier(.34,1.56,.64,1) both;
}
@keyframes msgIn {
  from { opacity: 0; transform: translateY(12px) scale(.97); }
  to   { opacity: 1; transform: none; }
}
.msg.u { align-self: flex-end; flex-direction: row-reverse; }
.msg.a { align-self: flex-start; }

.msg .av {
  width: 36px; height: 36px; border-radius: var(--radius-full);
  flex-shrink: 0; display: flex; align-items: center; justify-content: center;
  font-size: 16px; font-weight: 700; font-family: 'Outfit', sans-serif;
}
.msg.u .av { background: linear-gradient(135deg, var(--md-tertiary), var(--md-primary)); color: #fff; }
.msg.a .av { background: var(--md-surface-3); border: 1px solid var(--md-outline); color: var(--md-primary); }

.msg .b {
  padding: 14px 18px; font-size: 15px; line-height: 1.65;
  max-width: 100%;
}
.msg.u .b {
  background: linear-gradient(135deg, var(--md-primary-container), rgba(0,77,110,.8));
  border: 1px solid var(--md-outline);
  border-radius: var(--radius-lg) var(--radius-sm) var(--radius-lg) var(--radius-lg);
  color: #e8f4ff;
}
.msg.a .b {
  background: var(--md-surface);
  border: 1px solid var(--md-outline);
  border-radius: var(--radius-sm) var(--radius-lg) var(--radius-lg) var(--radius-lg);
  color: var(--md-on-surface);
}
.msg .b pre {
  background: rgba(0,0,0,.4); border: 1px solid var(--md-outline);
  border-radius: var(--radius-sm); padding: 14px; overflow-x: auto;
  font-size: 13px; font-family: 'Fira Code', monospace; color: var(--md-secondary); margin: 10px 0;
}
.msg .b code { color: var(--md-secondary); font-size: .9em; }

/* ── Input Zone ────────────────────────────── */
.ia {
  position: absolute; bottom: 0; left: 0; right: 0;
  padding: 16px 24px 24px;
  background: linear-gradient(to top, var(--md-bg) 60%, transparent);
}
.ia-inner {
  max-width: 760px; margin: 0 auto;
  background: var(--md-surface-2);
  border: 1px solid var(--md-outline);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(20px);
  box-shadow: var(--elev-2);
  padding: 8px 8px 8px 16px;
  display: flex; flex-direction: column; gap: 8px;
  transition: border-color .2s, box-shadow .2s;
}
.ia-inner:focus-within {
  border-color: var(--md-outline-hi);
  box-shadow: var(--elev-3), 0 0 0 1px rgba(79,195,247,.2);
}

.ir { display: flex; align-items: flex-end; gap: 8px; }

#ci {
  flex: 1; background: transparent; border: none; outline: none;
  color: var(--md-on-bg); font-family: var(--font); font-size: 15px;
  line-height: 1.5; resize: none; min-height: 44px; max-height: 140px;
  padding: 10px 0; align-self: center;
}
#ci::placeholder { color: var(--md-on-surface-dim); }

.ib {
  width: 40px; height: 40px; border-radius: var(--radius-full);
  background: var(--md-surface-3); border: 1px solid var(--md-outline);
  color: var(--md-on-surface-dim); font-size: 16px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all .2s; flex-shrink: 0;
}
.ib:hover { background: var(--md-primary-container); color: var(--md-primary); border-color: var(--md-primary); }
.ib.rec { background: rgba(255,82,82,.15); border-color: var(--md-error); color: var(--md-error); animation: pulse 1.2s infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 6px rgba(255,82,82,.15); } }

#sb {
  width: 44px; height: 44px; border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--md-primary), #0099cc);
  border: none; color: #000; font-size: 18px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 20px rgba(79,195,247,.4);
  transition: all .2s; flex-shrink: 0;
}
#sb:hover { transform: scale(1.08); box-shadow: 0 0 30px rgba(79,195,247,.6); }
#sb:disabled { background: var(--md-surface-3); color: var(--md-on-surface-dim); box-shadow: none; cursor: not-allowed; }

.it { display: flex; }
.it .model-picker { width: 100%; }

/* ── Model Picker ──────────────────────────── */
.model-picker { position: relative; }
.mp-current {
  display: flex; align-items: center; gap: 8px; padding: 4px 10px;
  border-radius: var(--radius-full); cursor: pointer;
  color: var(--md-on-surface-dim); font-size: 12px; font-weight: 500;
  transition: all .2s; user-select: none;
}
.mp-current:hover { background: var(--md-surface-3); color: var(--md-on-surface); }
.mp-icon { color: var(--md-secondary); font-size: 14px; }
.mp-arrow { margin-left: auto; font-size: 10px; transition: transform .2s; }
.model-picker.open .mp-arrow { transform: rotate(180deg); }

.mp-dropdown {
  position: absolute; bottom: calc(100% + 10px); left: 0; min-width: 280px;
  background: rgba(12,16,24,.95); border: 1px solid var(--md-outline-hi);
  border-radius: var(--radius-lg); backdrop-filter: blur(30px);
  box-shadow: 0 -20px 60px rgba(0,0,0,.6), 0 0 0 1px rgba(79,195,247,.1);
  z-index: 300; display: none; flex-direction: column; overflow: hidden;
  max-height: 300px; overflow-y: auto;
}
.model-picker.open .mp-dropdown { display: flex; }
.mp-group-label {
  padding: 10px 16px 6px; font-size: 10px; font-weight: 700;
  letter-spacing: 1.5px; text-transform: uppercase; color: var(--md-secondary);
  opacity: .7;
}
.mp-option {
  padding: 10px 16px; display: flex; align-items: center; gap: 10px;
  font-size: 14px; font-weight: 500; color: var(--md-on-surface);
  cursor: pointer; transition: background .15s;
}
.mp-option:hover { background: var(--md-surface-2); }
.mp-option.selected { color: var(--md-primary); background: rgba(79,195,247,.08); }
.mp-free {
  margin-left: auto; font-size: 10px; font-weight: 600; letter-spacing: .8px;
  color: var(--md-secondary); background: rgba(255,215,0,.1);
  padding: 2px 8px; border-radius: var(--radius-full);
  border: 1px solid rgba(255,215,0,.2);
}

/* ── Tools Panel ───────────────────────────── */
.tp {
  position: fixed; right: -480px; top: var(--nav-h); bottom: 0; width: 440px;
  background: rgba(8,11,16,.92); backdrop-filter: blur(30px);
  border-left: 1px solid var(--md-outline); z-index: 90;
  display: flex; flex-direction: column;
  transition: right .35s cubic-bezier(.4,0,.2,1);
}
.tp.open { right: 0; }
.th {
  padding: 24px 20px 16px; display: flex; justify-content: space-between; align-items: center;
  border-bottom: 1px solid var(--md-outline);
}
.th h2 { font-size: 18px; font-weight: 700; letter-spacing: -.3px; color: var(--md-on-bg); }
.tc2 {
  width: 36px; height: 36px; border-radius: var(--radius-full);
  background: var(--md-surface-2); border: 1px solid var(--md-outline);
  color: var(--md-on-surface); font-size: 16px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all .2s;
}
.tc2:hover { background: var(--md-error); border-color: var(--md-error); color: #fff; }
.tb { flex: 1; overflow-y: auto; padding: 16px; display: flex; flex-direction: column; gap: 12px; }

.ts {
  background: var(--md-surface); border: 1px solid var(--md-outline);
  border-radius: var(--radius-lg); overflow: hidden;
}
.tsh {
  padding: 12px 16px; font-size: 11px; font-weight: 700;
  letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--md-primary); background: rgba(79,195,247,.05);
  border-bottom: 1px solid var(--md-outline);
}
.tsb { padding: 16px; display: flex; flex-direction: column; gap: 10px; }
.ti {
  width: 100%; padding: 10px 14px; background: var(--md-surface-2);
  border: 1px solid var(--md-outline); border-radius: var(--radius-md);
  color: var(--md-on-bg); font-family: var(--font); font-size: 14px; outline: none;
  transition: border-color .2s;
}
.ti:focus { border-color: var(--md-outline-hi); }
.tbtn {
  padding: 10px 18px; background: var(--md-primary-container);
  color: var(--md-primary); border: 1px solid var(--md-outline);
  border-radius: var(--radius-md); font-family: var(--font);
  font-size: 13px; font-weight: 600; cursor: pointer;
  align-self: flex-start; transition: all .2s;
}
.tbtn:hover { background: var(--md-primary); color: var(--md-on-primary); }
.tr {
  padding: 12px 14px; background: rgba(0,0,0,.3);
  border: 1px dashed var(--md-outline); border-radius: var(--radius-md);
  font-size: 13px; color: var(--md-secondary); max-height: 140px;
  overflow-y: auto; font-family: 'Fira Code', monospace; line-height: 1.5;
}

/* ── Overlay & Toast ───────────────────────── */
.ov { position: fixed; inset: 0; background: rgba(0,0,0,.6); z-index: 80; opacity: 0; pointer-events: none; transition: opacity .3s; }
.ov.s { opacity: 1; pointer-events: auto; }
.tst {
  position: fixed; bottom: 120px; left: 50%; transform: translateX(-50%);
  padding: 12px 24px; background: var(--md-surface-3);
  border: 1px solid var(--md-outline); border-radius: var(--radius-full);
  color: var(--md-on-bg); font-size: 14px; font-weight: 500;
  z-index: 200; opacity: 0; pointer-events: none;
  backdrop-filter: blur(20px); box-shadow: var(--elev-2);
  transition: opacity .3s; white-space: nowrap;
}
.tst.s { opacity: 1; }

/* ── Typing indicator ──────────────────────── */
.typing { display: flex; gap: 5px; align-items: center; padding: 4px 0; }
.typing span {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--md-primary); opacity: .4;
  animation: dot .8s infinite;
}
.typing span:nth-child(2) { animation-delay: .15s; }
.typing span:nth-child(3) { animation-delay: .3s; }
@keyframes dot { 0%,80%,100% { transform: scale(.7); opacity: .3; } 40% { transform: scale(1); opacity: 1; } }

/* ── Scrollbar ─────────────────────────────── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--md-outline); border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: var(--md-outline-hi); }

/* ── Stitch Viewer ─────────────────────────── */
.stitch-viewer {
  position: fixed; inset: 0; z-index: 2000;
  background: var(--md-bg);
  display: flex; flex-direction: column;
  transform: translateY(100%);
  transition: transform .4s cubic-bezier(.4,0,.2,1);
}
.stitch-viewer.open {
  transform: translateY(0);
}
.stitch-header {
  height: 56px; padding: 0 16px;
  display: flex; align-items: center; justify-content: space-between;
  background: var(--md-surface); border-bottom: 1px solid var(--md-outline);
}
.stitch-title { font-weight: 600; color: var(--md-primary); display: flex; align-items: center; gap: 8px; }
.stitch-close { background: transparent; border: none; color: var(--md-on-surface); font-size: 24px; cursor: pointer; }
.stitch-frame { flex: 1; border: none; width: 100%; background: #fff; }
.stitch-btn { color: #FFD700 !important; font-size: 20px !important; }

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 768px) {
  .wc {
    padding: 24px 16px 120px;
    justify-content: flex-start;
    overflow-y: auto;
  }
  .wc h1 { font-size: clamp(36px, 10vw, 56px); }
  .wc-cards { grid-template-columns: 1fr; gap: 12px; }
  .msg { max-width: 90%; }
  .ia { padding: 12px 12px 24px; }
  .ia-inner { border-radius: var(--radius-lg); }
  #ci { min-height: 40px; }
  .sidebar { width: 280px; }
  .tp { width: 100%; right: -100%; }
}

/* ═══ PREMIUM PORTAL STYLES ═══ */
.portal-card {
  position: relative;
  background: rgba(255,255,255,0.02);
  border-radius: 20px;
  padding: 2px;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  transform-style: preserve-3d;
}

.portal-card::before {
  content: ''; position: absolute; inset: 0; border-radius: 20px; padding: 2px;
  background: linear-gradient(var(--border-angle, 0deg), var(--md-primary), transparent 40%, transparent 60%, var(--md-primary));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  animation: borderSpin 4s linear infinite; opacity: 0.5; transition: opacity 0.4s;
}

.portal-card:hover::before { opacity: 1; box-shadow: 0 0 30px rgba(79, 195, 247, 0.5); }

.portal-card-inner {
  background: rgba(8,11,16,0.9);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-radius: 18px;
  position: relative; overflow: hidden; height: 100%; width: 100%;
}

@keyframes borderSpin { to { --border-angle: 360deg; } }
@property --border-angle { syntax: '<angle>'; inherits: false; initial-value: 0deg; }

@keyframes cardGlitch {
  0% { clip-path: inset(10% 0 80% 0); transform: translate(-2px, 2px); filter: hue-rotate(90deg); }
  20% { clip-path: inset(80% 0 10% 0); transform: translate(2px, -2px); filter: hue-rotate(-90deg); }
  40% { clip-path: inset(40% 0 50% 0); transform: translate(-2px, -2px); filter: hue-rotate(45deg); }
  60% { clip-path: inset(60% 0 20% 0); transform: translate(2px, 2px); filter: hue-rotate(-45deg); }
  80% { clip-path: inset(20% 0 60% 0); transform: translate(-1px, 1px); filter: hue-rotate(20deg); }
  100% { clip-path: inset(0 0 0 0); transform: translate(0); filter: hue-rotate(0); }
}
.portal-card:hover::after {
    content: ''; position: absolute; inset: 0; background: inherit;
    border-radius: inherit; z-index: 10; pointer-events: none;
    animation: cardGlitch 0.3s cubic-bezier(.25, .46, .45, .94) both;
    opacity: 0.15; mix-blend-mode: overlay;
}