/* =====================================================================
   AI Notebook  -  auth-premium.css  (2026 Premium Redesign)
   ---------------------------------------------------------------------
   Refines the login / signup / forgot pages on top of auth.css using the
   theme.css token system. Keeps existing markup & JS untouched.
   ===================================================================== */

.auth-wrap {
  position: relative;
  z-index: 2;
}

/* Ambient gradient orbs behind the card */
.auth-wrap::before,
.auth-wrap::after {
  content: '';
  position: fixed;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.5;
  z-index: 0;
  pointer-events: none;
}
.auth-wrap::before {
  width: 420px; height: 420px;
  top: -120px; left: -100px;
  background: radial-gradient(circle, hsl(var(--accent-h) 90% 60% / 0.45), transparent 70%);
  animation: authFloat 14s ease-in-out infinite;
}
.auth-wrap::after {
  width: 380px; height: 380px;
  bottom: -120px; right: -90px;
  background: radial-gradient(circle, hsl(calc(var(--accent-h) + 40) 85% 60% / 0.35), transparent 70%);
  animation: authFloat 18s ease-in-out infinite reverse;
}
@keyframes authFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(28px, -22px) scale(1.08); }
}
:root[data-motion="reduced"] .auth-wrap::before,
:root[data-motion="reduced"] .auth-wrap::after { animation: none; }

/* The card */
.auth-card.glass {
  position: relative;
  z-index: 3;
  background: var(--surface, rgba(20, 24, 38, 0.72)) !important;
  border: 1px solid var(--border) !important;
  border-radius: var(--radius-xl, 22px) !important;
  box-shadow: var(--shadow-lg, 0 30px 80px rgba(0,0,0,0.45)) !important;
  backdrop-filter: blur(22px) saturate(160%);
  animation: authCardIn 0.6s var(--ease-smooth) both;
}
@keyframes authCardIn {
  from { opacity: 0; transform: translateY(18px) scale(0.985); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.auth-card .brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}
.auth-card .brand .logo-img {
  width: 32px; height: 32px;
  border-radius: 9px;
  box-shadow: var(--shadow-accent);
}
.auth-card h1 {
  letter-spacing: -0.02em;
  background: var(--grad, linear-gradient(135deg, var(--text), var(--accent)));
  -webkit-background-clip: text;
  background-clip: text;
}

/* Inputs */
.auth-card .input-wrap input {
  transition: border-color var(--dur-base) var(--ease-smooth),
              box-shadow var(--dur-base) var(--ease-smooth),
              background var(--dur-base) var(--ease-smooth);
}
.auth-card .input-wrap input:focus {
  border-color: var(--accent) !important;
  box-shadow: 0 0 0 3px var(--accent-ring) !important;
}
.auth-card .input-wrap .lead-icon { transition: color var(--dur-base) var(--ease-smooth); }
.auth-card .input-wrap input:focus ~ .lead-icon,
.auth-card .field:focus-within .lead-icon { color: var(--accent); }

/* Primary submit button — premium gradient */
.auth-card .btn.block:not(.ghost) {
  background: var(--grad, linear-gradient(135deg, var(--accent), var(--accent-2))) !important;
  border: none !important;
  box-shadow: var(--shadow-accent);
  transition: transform var(--dur-fast) var(--ease-smooth),
              box-shadow var(--dur-base) var(--ease-smooth),
              filter var(--dur-base) var(--ease-smooth);
}
.auth-card .btn.block:not(.ghost):hover {
  transform: translateY(-2px);
  filter: brightness(1.06);
  box-shadow: var(--shadow-glow);
}
.auth-card .btn.block:not(.ghost):active { transform: translateY(0); }

.auth-card .btn.ghost.block {
  border: 1px solid var(--border) !important;
  transition: border-color var(--dur-base) var(--ease-smooth),
              background var(--dur-base) var(--ease-smooth),
              transform var(--dur-fast) var(--ease-smooth);
}
.auth-card .btn.ghost.block:hover {
  border-color: var(--accent-ring) !important;
  background: var(--accent-soft) !important;
  transform: translateY(-1px);
}

.auth-card .auth-row a,
.auth-card .auth-foot a { color: var(--accent); }

.auth-or { color: var(--text-muted); }

/* Floating helpers */
.back-home, .theme-toggle.floating {
  z-index: 10;
  transition: transform var(--dur-base) var(--ease-smooth),
              color var(--dur-base) var(--ease-smooth);
}
.back-home:hover { transform: translateX(-3px); color: var(--accent); }
.theme-toggle.floating:hover { transform: scale(1.08); }


/* 2026 workspace auth redesign — structure and API remain unchanged. */
.auth-wrap {
  width: min(1180px, calc(100% - 3rem)); min-height: 100vh; margin: 0 auto; padding: 5.5rem 0 3rem;
  display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(390px, .72fr); align-items: center; gap: clamp(3rem, 8vw, 8rem);
}
.auth-visual { position: relative; z-index: 2; padding: 2rem 0; }
.auth-visual-kicker { display: inline-flex; align-items: center; gap: .55rem; color: var(--accent); font-size: .72rem; font-weight: 800; letter-spacing: .15em; text-transform: uppercase; }
.auth-visual h2 { max-width: 620px; margin: 1.15rem 0 1rem; color: var(--text); font-size: clamp(2.5rem, 5vw, 4.7rem); line-height: .98; letter-spacing: -.065em; }
.auth-visual h2 em { color: var(--accent); font-style: normal; }
.auth-visual > p { max-width: 490px; margin: 0; color: var(--text-dim); font-size: 1.02rem; line-height: 1.7; }
.auth-preview { width: min(490px, 100%); margin-top: 2.7rem; padding: 1.15rem; border: 1px solid var(--border); border-radius: 18px; background: linear-gradient(145deg, rgba(255,255,255,.09), rgba(255,255,255,.025)); box-shadow: 0 25px 70px rgba(0,0,0,.25), inset 0 1px rgba(255,255,255,.06); }
.auth-preview-head { display: flex; align-items: center; gap: .55rem; color: var(--text); font-size: .8rem; }
.preview-dot { width: .5rem; height: .5rem; flex: none; border-radius: 50%; background: #53d8a0; box-shadow: 0 0 0 4px rgba(83,216,160,.12); }
.preview-status { margin-left: auto; color: #53d8a0; font-size: .68rem; font-weight: 700; }
.preview-line { height: .5rem; margin-top: 1.2rem; border-radius: 99px; background: linear-gradient(90deg, var(--accent), rgba(255,255,255,.1)); opacity: .8; }
.preview-line.wide { width: 78%; } .preview-line.medium { width: 52%; margin-top: .55rem; opacity: .35; } .preview-line.short { width: 38%; margin-top: .55rem; opacity: .35; }
.preview-insight { display: flex; align-items: center; gap: .7rem; margin-top: 1.4rem; padding: .8rem; color: var(--accent); border: 1px solid var(--accent-ring); background: var(--accent-soft); border-radius: 11px; }
.preview-insight span { display: grid; gap: .18rem; min-width: 0; } .preview-insight b { color: var(--text); font-size: .76rem; } .preview-insight small { color: var(--text-dim); font-size: .67rem; } .preview-insight > i:last-child { margin-left: auto; font-size: .7rem; }
.auth-proof { display: flex; flex-wrap: wrap; gap: 1.2rem; margin-top: 1.5rem; color: var(--text-muted); font-size: .72rem; } .auth-proof i { margin-right: .35rem; color: #53d8a0; }
.auth-card.glass { width: 100%; padding: 2.35rem; border-radius: 24px !important; } .auth-card .brand { justify-content: flex-start; margin-bottom: 2.5rem; } .auth-card h1 { text-align: left; font-size: 2rem; } .auth-card .sub { text-align: left; margin-bottom: 1.7rem; } .auth-card .field label { color: var(--text-muted); font-size: .75rem; letter-spacing: .03em; text-transform: uppercase; } .auth-card .field input { min-height: 52px; border-radius: 13px; background: rgba(255,255,255,.035); } .auth-card .auth-row { font-size: .78rem; } .auth-card .btn.block { min-height: 51px; border-radius: 13px; font-size: .9rem; } .auth-card .auth-or { margin: 1.35rem 0; } .auth-card .btn.ghost.block { min-height: 50px; border-radius: 13px; } .auth-foot { font-size: .78rem; }
@media (max-width: 860px) { .auth-wrap { width: min(560px, calc(100% - 2rem)); display: block; padding-top: 5rem; } .auth-visual { padding: 1rem 0 2.5rem; } .auth-visual h2 { max-width: 540px; font-size: clamp(2.5rem, 10vw, 4rem); } .auth-preview { margin-top: 1.8rem; } .auth-card.glass { padding: 2rem; } }
@media (max-width: 480px) { .auth-wrap { width: calc(100% - 1.25rem); padding-top: 4.5rem; } .auth-visual h2 { font-size: 2.45rem; } .auth-visual > p { font-size: .9rem; } .auth-proof { gap: .7rem; font-size: .67rem; } .auth-card.glass { padding: 1.4rem; border-radius: 18px !important; } .auth-card h1 { font-size: 1.65rem; } .back-home { top: .7rem; left: .7rem; } }