/* ===========================================
   NUISANCE RESOLVER - SaaS Clean Theme (Purple)
   =========================================== */

:root{
  --accent: #7c3aed;          /* purple */
  --accent-2: #a78bfa;        /* soft purple */
  --accent-3: #6d28d9;        /* deep purple */
  --success: #22c55e;

  --bg: #f6f7fb;
  --bg2:#ffffff;
  --text:#0f172a;
  --muted:#64748b;

  --card:#ffffff;
  --border:#e6e8f0;
  --shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
  --shadow2: 0 10px 22px rgba(15, 23, 42, 0.06);

  --radius: 18px;
  --radius2: 14px;

  --pill: rgba(124,58,237,.10);
  --pillBorder: rgba(124,58,237,.18);

  --inputBg:#ffffff;
  --focusRing: rgba(124,58,237,.18);

  --max: 1120px;
}

[data-theme="dark"]{
  --bg:#0b1020;
  --bg2:#0f172a;
  --text:#e5e7eb;
  --muted:#94a3b8;

  --card: rgba(15,23,42,.72);
  --border: rgba(148,163,184,.18);
  --shadow: 0 22px 50px rgba(0,0,0,.55);
  --shadow2: 0 12px 28px rgba(0,0,0,.35);

  --pill: rgba(167,139,250,.12);
  --pillBorder: rgba(167,139,250,.22);

  --inputBg: rgba(2,6,23,.35);
  --focusRing: rgba(167,139,250,.18);
}

/* ---------- Base ---------- */
*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 700px at 35% -10%, rgba(124,58,237,.16), transparent 60%),
    radial-gradient(1000px 600px at 90% 10%, rgba(167,139,250,.14), transparent 55%),
    linear-gradient(180deg, var(--bg), var(--bg));
}

a{ color:inherit; text-decoration:none; }
a:hover{ text-decoration:underline; }

.wrap{
  max-width: var(--max);
  margin: 0 auto;
  padding: 22px;
}

/* ---------- Topbar ---------- */
.topbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  padding: 12px 0 18px;
}

.brand{
  display:flex; align-items:center; gap:10px;
  font-weight: 900;
  letter-spacing: -.6px;
  font-size: 18px;
}

.logo{
  width:34px; height:34px;
  border-radius: 14px;
  overflow:hidden;
  box-shadow: var(--shadow2);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}
.logo img{ width:100%; height:100%; display:block; }

.nav{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.65);
  backdrop-filter: blur(8px);
  font-weight: 800;
  cursor:pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease, opacity .15s ease;
  user-select:none;
}
[data-theme="dark"] .btn{
  background: rgba(15,23,42,.45);
}
.btn:hover{ transform: translateY(-2px); text-decoration:none; }
.btn:active{ transform: translateY(0); }
.btn[disabled]{ opacity:.6; cursor:not-allowed; }

.btn-primary{
  border:none;
  color:#fff;
  background: linear-gradient(135deg, var(--accent-3), var(--accent));
  box-shadow: 0 16px 28px rgba(124,58,237,.25);
}
.btn-primary:hover{ box-shadow: 0 22px 40px rgba(124,58,237,.28); }

.btn-ghost{
  background: transparent;
  border: 1px solid var(--border);
}

.btn-cyan{
  border:none;
  color:#0b1020;
  background: linear-gradient(135deg, #c4b5fd, #a78bfa);
  box-shadow: 0 16px 28px rgba(167,139,250,.22);
}

/* ---------- Theme toggle pill ---------- */
.theme-toggle{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid var(--pillBorder);
  background: var(--pill);
  font-weight: 900;
}
.dot{
  width:10px; height:10px; border-radius:999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

/* ---------- Cards ---------- */
.card{
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}
.card .inner{ padding: 22px; }

.badge{
  display:inline-flex;
  align-items:center;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--pill);
  border: 1px solid var(--pillBorder);
  color: var(--text);
  font-weight: 900;
  font-size: 12px;
}

/* ---------- Typography ---------- */
.h1{
  font-size: 52px;
  line-height: 1.05;
  margin: 10px 0 14px;
  letter-spacing: -1.2px;
}
@media (max-width: 560px){ .h1{ font-size: 40px; } }

.lead{
  margin:0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.65;
  max-width: 65ch;
}

.small{ color: var(--muted); font-size: 13px; }

/* ---------- Layout grid ---------- */
.grid{
  display:grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 14px;
}
.col-8{ grid-column: span 8; }
.col-6{ grid-column: span 6; }
.col-4{ grid-column: span 4; }
@media (max-width: 900px){
  .col-8,.col-6,.col-4{ grid-column: span 12; }
}

/* ---------- Hero ---------- */
.hero{
  margin-top: 28px;
  display:grid;
  grid-template-columns: 1.25fr .75fr;
  gap: 16px;
  align-items: stretch;
}
@media (max-width: 900px){
  .hero{ grid-template-columns: 1fr; }
}

.cta{
  margin-top: 16px;
  display:flex;
  gap: 12px;
  flex-wrap:wrap;
}

/* ---------- Divider ---------- */
.divider{
  height:1px;
  background: var(--border);
  margin: 16px 0;
}

/* ---------- Feature blocks ---------- */
.feature{
  padding: 16px;
  border-radius: var(--radius2);
  border: 1px solid var(--border);
  background: rgba(255,255,255,.65);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow2);
  transition: transform .15s ease;
}
[data-theme="dark"] .feature{
  background: rgba(15,23,42,.38);
}
.feature:hover{ transform: translateY(-2px); }
.feature h3{ margin:0 0 8px; font-size: 15px; letter-spacing: -.3px; }
.feature p{ margin:0; color: var(--muted); line-height:1.55; }

/* ---------- Forms ---------- */
.form{ display:grid; gap: 12px; }
.label{
  font-weight: 900;
  font-size: 12px;
  letter-spacing: .25px;
  margin-bottom: 6px;
}
.input{
  width:100%;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--inputBg);
  color: var(--text);
  outline:none;
  font-size: 14.5px;
}
.input:focus{
  border-color: rgba(124,58,237,.55);
  box-shadow: 0 0 0 4px var(--focusRing);
}
.help{ color: var(--muted); font-size: 13px; line-height: 1.45; margin: 0; }

.alert{
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(248,113,113,.35);
  background: rgba(248,113,113,.12);
  color: #fb7185;
  font-weight: 900;
}

/* ---------- Progress + spinner ---------- */
.progress{
  height:10px;
  width:100%;
  background: rgba(148,163,184,.22);
  border-radius: 999px;
  overflow:hidden;
  border: 1px solid var(--border);
}
.progress > div{
  height:100%;
  width:0%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  transition: width .15s ease;
}
.spinner{
  width:16px; height:16px;
  border-radius:999px;
  border:2px solid rgba(148,163,184,.35);
  border-top-color: var(--accent);
  animation: spin 1s linear infinite;
}
@keyframes spin{ to { transform: rotate(360deg); } }

/* ---------- Footer ---------- */
.footer{
  margin: 56px 0 18px;
  color: var(--muted);
  font-size: 13px;
  text-align:center;
}

/* ===========================================
   Chat Bubble Look (like screenshot widgets)
   =========================================== */

.chat-shell{
  display:grid;
  grid-template-columns: 340px 1fr;
  gap: 14px;
}
@media (max-width: 980px){
  .chat-shell{ grid-template-columns: 1fr; }
}

/* Left “sidebar” card list */
.sidebar-list{
  display:grid;
  gap: 10px;
}

/* Chat area */
.chat-area{
  display:grid;
  grid-template-rows: auto 1fr auto;
  min-height: 540px;
}

.chat-log{
  padding: 8px;
  overflow:auto;
  display:flex;
  flex-direction: column;
  gap: 10px;
}

/* Bubble wrapper */
.bubble{
  max-width: 78%;
  padding: 12px 14px;
  border-radius: 18px;
  line-height: 1.55;
  box-shadow: var(--shadow2);
  border: 1px solid var(--border);
}

/* Assistant bubble (left) */
.bubble.assistant{
  background: rgba(255,255,255,.8);
}
[data-theme="dark"] .bubble.assistant{
  background: rgba(15,23,42,.45);
}

/* User bubble (right, purple) */
.bubble.user{
  margin-left: auto;
  background: linear-gradient(135deg, var(--accent-3), var(--accent));
  color: #fff;
  border: none;
}

.meta{
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 6px;
}
.meta strong{ color: var(--text); }
[data-theme="dark"] .meta strong{ color: #e5e7eb; }

/* Chat composer */
.composer{
  display:flex;
  gap: 10px;
  align-items: flex-end;
  padding-top: 10px;
}
.composer textarea{
  resize: vertical;
  min-height: 52px;
  max-height: 180px;
}