/* ═══════════════════════════════════════════════════
   layout.css  —  App shell, sidebar, topbar, page
   content area. Responsive breakpoints. No colours
   here — use tokens from variables.css only.
════════════════════════════════════════════════════ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
  transition: background 0.2s, color 0.2s;
}

a { color: var(--accent); text-decoration: none; }

/* ── App shell ────────────────────────────────── */
.app { display: flex; min-height: 100vh; }

/* ── Sidebar ──────────────────────────────────── */
.sidebar {
  width: 228px;
  background: var(--bg2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0;
  height: 100vh;
  z-index: 100;
  transition: transform 0.25s ease, background 0.2s;
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 99;
}

.sb-header { padding: 14px 16px; border-bottom: 1px solid var(--border); }

.sb-logo { display: flex; align-items: center; gap: 10px; }
.sb-logo-icon {
  width: 34px; height: 34px;
  background: var(--accent);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 13px;
  flex-shrink: 0;
}
.sb-family { font-size: 13px; font-weight: 600; }
.sb-sub    { font-size: 11px; color: var(--text3); }

.sb-nav    { flex: 1; overflow-y: auto; padding: 8px 0; }
.sb-section {
  font-size: 10px; font-weight: 600; color: var(--text3);
  padding: 10px 16px 4px;
  text-transform: uppercase; letter-spacing: .06em;
}
.sb-item {
  display: flex; align-items: center; gap: 9px;
  padding: 8px 16px;
  font-size: 13px; cursor: pointer;
  color: var(--text2);
  border-left: 2px solid transparent;
  transition: all .15s;
}
.sb-item:hover  { background: var(--bg3); color: var(--text); }
.sb-item.active {
  color: var(--accent);
  border-left-color: var(--accent);
  background: var(--accent-bg);
  font-weight: 600;
}
.sb-item svg     { width: 15px; height: 15px; flex-shrink: 0; opacity: .7; }
.sb-item.active svg { opacity: 1; }
.sb-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--danger);
  flex-shrink: 0;
}

.sb-footer { padding: 12px 14px; border-top: 1px solid var(--border); }
.user-pill  { display: flex; align-items: center; gap: 9px; cursor: pointer; border-radius: var(--radius-sm); padding: 4px; transition: background .15s; }
.user-pill:hover { background: var(--bg3); }
.sb-role-line {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.sb-billing-status {
  border: 0;
  border-radius: 999px;
  padding: 2px 8px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .02em;
  cursor: pointer;
  background: var(--bg3);
  color: var(--text2);
}
.sb-billing-status.is-trial {
  background: color-mix(in srgb, var(--accent-bg) 78%, var(--bg2));
  color: var(--accent);
}
.sb-billing-status.is-pro {
  background: color-mix(in srgb, var(--success-bg) 80%, var(--bg2));
  color: var(--success);
}
.sb-billing-status.is-scholarship {
  background: color-mix(in srgb, var(--warning-bg) 82%, var(--bg2));
  color: var(--warning);
}
.sb-billing-status.is-restricted {
  background: color-mix(in srgb, var(--danger-bg) 82%, var(--bg2));
  color: var(--danger);
}

/* ── Main content area ────────────────────────── */
.main-wrap { margin-left: 228px; flex: 1; min-width: 0; }

/* ── Topbar ───────────────────────────────────── */
.topbar {
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  padding: 12px 20px;
  display: flex; align-items: center; justify-content: space-between;
  position: sticky; top: 0; z-index: 10;
}
.topbar-left  { display: flex; align-items: center; gap: 12px; }
.menu-btn     { display: none; background: none; border: none; cursor: pointer; color: var(--text); padding: 4px; }
.page-title   { font-size: 15px; font-weight: 600; }
.topbar-right { display: flex; align-items: center; gap: 8px; }
.billing-actions-disabled .btn,
.billing-actions-disabled .btn-primary,
.billing-actions-disabled .btn-secondary,
.billing-actions-disabled .btn-danger,
.billing-actions-disabled .btn-icon,
.billing-actions-disabled button {
  pointer-events: none;
  opacity: .55;
}

.billing-readonly .btn,
.billing-readonly .btn-primary,
.billing-readonly .btn-secondary,
.billing-readonly .btn-danger,
.billing-readonly .btn-icon,
.billing-readonly button,
.billing-readonly input,
.billing-readonly select,
.billing-readonly textarea,
.billing-readonly summary,
.billing-readonly [role="switch"] {
  pointer-events: none;
  opacity: .55;
}
.billing-readonly-note {
  margin: 0 20px 20px;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--danger-bg) 72%, var(--bg2));
  color: var(--text2);
  font-size: 12px;
}
.dashboard-billing-banner {
  margin-bottom: 16px;
  padding: 16px 18px;
  border-radius: 18px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}
.dashboard-billing-banner.is-trial {
  background: color-mix(in srgb, var(--accent-bg) 78%, var(--bg2));
}
.dashboard-billing-banner.is-restricted {
  background: color-mix(in srgb, var(--danger-bg) 80%, var(--bg2));
}
.dashboard-billing-copy {
  display: grid;
  gap: 4px;
}
.dashboard-billing-title {
  font-size: 14px;
  font-weight: 700;
}
.dashboard-billing-text {
  color: var(--text2);
  font-size: 12px;
  line-height: 1.6;
}
.dashboard-billing-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.dashboard-billing-close {
  border: 0;
  width: 30px;
  height: 30px;
  border-radius: 999px;
  background: var(--bg2);
  color: var(--text2);
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
}
.billing-plan-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 14px;
}
.billing-plan-card {
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px;
  background: var(--bg2);
  display: grid;
  gap: 12px;
}
.billing-plan-card.is-selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 30%, transparent);
}
.billing-plan-card.is-recommended {
  background: color-mix(in srgb, var(--accent-bg) 70%, var(--bg2));
}
.billing-plan-tag {
  display: inline-flex;
  width: fit-content;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--bg3);
  color: var(--text2);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
}
.billing-plan-price {
  font-size: 28px;
  font-weight: 800;
  line-height: 1.1;
}
.billing-plan-price span {
  font-size: 13px;
  font-weight: 500;
  color: var(--text3);
}
.billing-plan-copy {
  color: var(--text2);
  font-size: 13px;
  line-height: 1.6;
}
.billing-plan-list {
  display: grid;
  gap: 8px;
  color: var(--text2);
  font-size: 12px;
}
.billing-plan-list div::before {
  content: '•';
  color: var(--accent);
  margin-right: 8px;
}

/* ── Page content ─────────────────────────────── */
.content { padding: 20px; }

/* ── Setup / Auth screens ─────────────────────── */
.setup {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg);
  padding: 20px;
}
.setup-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  width: 100%; max-width: 480px;
}
.setup-logo {
  width: 52px; height: 52px;
  background: var(--accent);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 800; font-size: 18px;
  margin-bottom: 20px;
}
.setup-title  { font-size: 22px; font-weight: 800; margin-bottom: 6px; }
.setup-sub    { font-size: 14px; color: var(--text2); margin-bottom: 24px; line-height: 1.5; }
.setup-step {
  background: var(--bg3);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  margin-bottom: 10px;
  font-size: 13px;
  border-left: 3px solid var(--accent);
}
.setup-step strong { display: block; margin-bottom: 2px; }

/* ── Utility grids ────────────────────────────── */
.g2 { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 14px; }
.g3 { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 14px; }
.g4 { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 12px; }

.mb8  { margin-bottom:  8px; }
.mb12 { margin-bottom: 12px; }
.mb16 { margin-bottom: 16px; }
.mb20 { margin-bottom: 20px; }

.flex         { display: flex; align-items: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-col     { display: flex; flex-direction: column; gap: 10px; }
.gap8  { gap:  8px; }
.gap12 { gap: 12px; }

/* ── Responsive breakpoints ───────────────────── */
@media (max-width: 1100px) {
  .g4 { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .g3 { grid-template-columns: repeat(2, minmax(0,1fr)); }
}

@media (max-width: 768px) {
  .sidebar              { transform: translateX(-100%); }
  .sidebar.open         { transform: translateX(0); }
  .sidebar-overlay.open { display: block; }
  .main-wrap            { margin-left: 0; }
  .menu-btn             { display: flex; }
}

@media (max-width: 700px) {
  .g4, .g3, .g2 { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .content { padding: 14px; }
  .billing-readonly-note { margin: 0 14px 14px; }
  .dashboard-billing-banner { align-items: start; flex-direction: column; }
  .billing-plan-grid { grid-template-columns: 1fr; }
}