/* ═══════════════════════════════════════════════════
   LAYOUT — Sidebar + Topbar + Main area
   "Obsidian Aurora" — glass panels, depth, glow accents
═══════════════════════════════════════════════════ */

/* ── LOGIN GATE ── */
#login-gate {
  position: fixed;
  inset: 0;
  background: var(--void);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 5000;
  overflow: hidden;
}
/* Ambient gradient behind login */
#login-gate::before {
  content: '';
  position: absolute;
  width: 700px;
  height: 700px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: radial-gradient(ellipse, rgba(139,108,247,.1) 0%, rgba(56,189,248,.04) 40%, transparent 70%);
  animation: loginPulse 6s ease-in-out infinite;
  pointer-events: none;
}
#login-gate::after {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  top: 30%;
  left: 60%;
  transform: translate(-50%, -50%);
  background: radial-gradient(ellipse, rgba(167,139,250,.06) 0%, transparent 60%);
  animation: loginPulse 8s ease-in-out 2s infinite;
  pointer-events: none;
}
@keyframes loginPulse {
  0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: .5; }
  50% { transform: translate(-50%, -50%) scale(1.15); opacity: 1; }
}
.login-card {
  width: 400px;
  max-width: 90vw;
  padding: 44px 36px;
  text-align: center;
  background: linear-gradient(160deg, rgba(22,25,41,.92), rgba(15,17,32,.95));
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(167,139,250,.12);
  border-radius: 20px;
  box-shadow: var(--shadow-lg), 0 0 80px rgba(139,108,247,.06), inset 0 1px 0 rgba(255,255,255,.04);
  position: relative;
  z-index: 1;
}
.login-logo {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 800;
  letter-spacing: -2px;
  color: var(--t1);
  margin-bottom: 4px;
}
.login-logo span { color: var(--accent); }
.login-sub {
  font-size: 12px;
  color: var(--t3);
  margin-bottom: 36px;
  letter-spacing: .5px;
  text-transform: uppercase;
  font-weight: 600;
  font-family: var(--font-mono);
}
.login-field {
  margin-bottom: 14px;
  text-align: left;
}
.login-field label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: var(--t2);
  margin-bottom: 6px;
  letter-spacing: .4px;
  text-transform: uppercase;
}
.login-field input {
  width: 100%;
  padding: 12px 16px;
  background: var(--s0);
  border: 1px solid var(--border);
}
.login-btn {
  width: 100%;
  padding: 13px;
  margin-top: 10px;
  background: var(--grad-accent);
  color: #fff;
  border: none;
  border-radius: var(--r-sm);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: all .2s;
  letter-spacing: .3px;
  box-shadow: 0 4px 20px rgba(139,108,247,.25);
}
.login-btn:hover { opacity: .92; box-shadow: 0 6px 30px rgba(139,108,247,.35); }
.login-btn:disabled { opacity: .5; cursor: not-allowed; }
.login-err {
  display: none;
  margin-top: 12px;
  padding: 10px 14px;
  background: var(--red-dim);
  border: 1px solid var(--red-border);
  border-radius: var(--r-sm);
  color: var(--red);
  font-size: 12px;
}
.login-link {
  display: block;
  margin-top: 18px;
  font-size: 12px;
  color: var(--t3);
  cursor: pointer;
  transition: color .15s;
}
.login-link:hover { color: var(--accent); }
.login-pwd-wrap { position: relative; }
.login-pwd-wrap input { padding-right: 42px; }
.login-eye {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  cursor: pointer;
  font-size: 16px;
  color: var(--t3);
  user-select: none;
}

/* ── APP SHELL ── */
#app-shell {
  display: none;
  height: 100vh;
}
#app-shell.visible { display: flex; }

/* ── SIDEBAR ── */
.sidebar {
  width: var(--sidebar-w);
  height: 100vh;
  background: linear-gradient(180deg, rgba(15,17,32,.98) 0%, rgba(10,11,22,.99) 100%);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow: visible;
  position: relative;
}
/* Subtle glow line on right edge */
.sidebar::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 1px;
  height: 100%;
  background: linear-gradient(180deg, transparent 0%, rgba(167,139,250,.15) 30%, rgba(56,189,248,.08) 70%, transparent 100%);
  pointer-events: none;
}

.sb-logo {
  padding: 22px 20px 18px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
  position: relative;
}
/* Subtle glow behind logo */
.sb-logo::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 26px;
  width: 60px;
  height: 60px;
  transform: translateY(-50%);
  background: radial-gradient(circle, rgba(139,108,247,.12), transparent 70%);
  pointer-events: none;
}
.sb-logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--grad-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 0 24px rgba(139,108,247,.3), 0 4px 12px rgba(0,0,0,.3);
  position: relative;
  z-index: 1;
}
.sb-logo-mark::after {
  content: 'A';
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  color: #fff;
  text-shadow: 0 1px 2px rgba(0,0,0,.3);
}
.sb-wordmark {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--t1);
}
.sb-wordmark span { color: var(--accent); }
.sb-version {
  font-size: 9px;
  color: var(--t3);
  font-family: var(--font-mono);
  letter-spacing: .5px;
  margin-top: -1px;
}

/* Nav */
.sb-nav {
  flex: 1;
  overflow-y: auto;
  padding: 14px 12px;
}
.sb-section {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--t4);
  padding: 14px 12px 6px;
  font-family: var(--font-mono);
}
.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 10px 14px;
  border: none;
  border-radius: var(--r-sm);
  background: transparent;
  color: var(--t2);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all .15s;
  text-align: left;
  position: relative;
}
.nav-link:hover { background: var(--s2); color: var(--t1); }
.nav-link.active {
  background: linear-gradient(90deg, rgba(167,139,250,.1), rgba(167,139,250,.04));
  color: var(--accent);
  font-weight: 600;
}
/* Active glow bar */
.nav-link.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 20px;
  border-radius: 0 3px 3px 0;
  background: var(--grad-accent);
  box-shadow: 0 0 12px var(--accent-glow);
}
.nl-icon {
  font-size: 15px;
  width: 20px;
  text-align: center;
  opacity: .6;
}
.nav-link.active .nl-icon { opacity: 1; }
.nl-badge {
  margin-left: auto;
  font-size: 10px;
  font-weight: 700;
  background: var(--accent-dim);
  color: var(--accent);
  padding: 2px 8px;
  border-radius: 10px;
  font-family: var(--font-mono);
}
.nl-new {
  margin-left: auto;
  font-size: 8px;
  font-weight: 700;
  letter-spacing: .8px;
  padding: 2px 6px;
  border-radius: 3px;
  background: var(--accent-dim);
  color: var(--accent);
}

/* User footer */
.sb-user {
  padding: 14px 16px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  transition: background .15s;
  position: relative;
}
.sb-user:hover { background: var(--s2); }
.sb-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--grad-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
  box-shadow: 0 0 14px rgba(139,108,247,.2);
}
.sb-user-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--t1);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 140px;
}
.sb-user-email {
  font-size: 10px;
  color: var(--t3);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 140px;
  font-family: var(--font-mono);
}
.sb-menu-btn {
  margin-left: auto;
  font-size: 16px;
  color: var(--t3);
}
.sb-dropdown {
  display: none;
  position: absolute;
  bottom: 100%;
  left: 10px;
  right: 10px;
  background: var(--s2);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 6px;
  box-shadow: var(--shadow-lg);
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.sb-dropdown.open { display: block; }
.sb-dd-item {
  padding: 9px 14px;
  font-size: 12px;
  color: var(--t2);
  border-radius: var(--r-xs);
  cursor: pointer;
  transition: all .12s;
}
.sb-dd-item:hover { background: var(--s3); color: var(--t1); }
.sb-dd-item.danger { color: var(--red); }
.sb-dd-item.danger:hover { background: var(--red-dim); }

/* ── MAIN AREA ── */
.main-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}
/* Ambient glow behind main area */
.main-area::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -80px;
  width: 600px;
  height: 600px;
  background: radial-gradient(ellipse, rgba(139,108,247,.04), rgba(56,189,248,.015) 50%, transparent 75%);
  pointer-events: none;
  z-index: 0;
}
.main-area::after {
  content: '';
  position: absolute;
  bottom: -150px;
  left: -100px;
  width: 500px;
  height: 500px;
  background: radial-gradient(ellipse, rgba(167,139,250,.025), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* ── TOPBAR ── */
.topbar {
  height: var(--topbar-h);
  padding: 0 28px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(10,11,22,.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  flex-shrink: 0;
  position: relative;
  z-index: 10;
}
#topbar-title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  color: var(--t1);
  letter-spacing: -.3px;
}
#topbar-sub {
  font-size: 11px;
  color: var(--t3);
  margin-left: 14px;
  font-family: var(--font-mono);
  opacity: .7;
}
.topbar-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Cloud pill */
.cloud-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 10px;
  font-weight: 600;
  font-family: var(--font-mono);
  background: rgba(52,211,153,.06);
  color: var(--green);
  border: 1px solid rgba(52,211,153,.15);
  letter-spacing: .3px;
  box-shadow: 0 0 12px rgba(52,211,153,.06);
}
.cloud-pill.offline {
  background: var(--s2);
  color: var(--t3);
  border-color: var(--border);
}
.cloud-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 6px currentColor;
}

/* ── PAGE WRAPPER ── */
.page-wrap {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 28px;
  position: relative;
  z-index: 1;
  background: linear-gradient(180deg, rgba(10,11,22,.3) 0%, transparent 30%);
}
.page { display: none; }
.page.page-active { display: block; }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .sidebar { display: none; }
  .page-wrap { padding: 16px; }
  #topbar-sub { display: none; }
}