/* ============================================================================
   x4digital V3 — Responsive Breakpoints
   Per Owner direction (Q8 + 2026-05-03): "Mobile-optimize everything for mobile"
   Per Charter NN#5 + feedback_aesthetic_is_signal.md: every viewport earns wow
   ============================================================================ */

@import "./design-tokens.css";

/* ── Breakpoints (mobile-first; max-width queries override desktop defaults) ── */

/* Phone (≤480px) */
@media (max-width: 480px) {
  :root {
    --space-5: 16px;             /* tighter rhythm on phone */
    --space-6: 20px;
    --space-7: 32px;
  }
  body {
    font-size: 15px;
  }
  .panel__header { padding: var(--space-4) var(--space-5) var(--space-3); }
  .panel__body { padding: var(--space-5); }
  .panel__title { font-size: var(--text-xl); }
  .panel__header::after { left: var(--space-5); width: 40px; }
  .modal { max-width: 100%; border-radius: var(--radius-lg) var(--radius-lg) 0 0; max-height: 95vh; align-self: flex-end; }
  .modal-backdrop { align-items: flex-end; padding: 0; }
  .btn { padding: var(--space-3) var(--space-4); }
  .tabs { flex-wrap: wrap; }
  .tabs__item { font-size: var(--text-xs); padding: var(--space-2) var(--space-3); }
  .card { padding: var(--space-4); }
}

/* Tablet portrait (≤720px) */
@media (max-width: 720px) {
  .container,
  .container--base { padding-inline: var(--space-4); }
  h1 { font-size: var(--text-3xl); }
  h2 { font-size: var(--text-2xl); }
  h3 { font-size: var(--text-xl); }
  /* Sidebars collapse to bottom-sheet pattern */
  .sidebar--collapsible {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    top: auto;
    width: 100%;
    height: auto;
    max-height: 70vh;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    box-shadow: var(--shadow-3);
    transform: translateY(calc(100% - 56px));
    transition: transform var(--duration-slow) var(--ease-out-expo);
  }
  .sidebar--collapsible[aria-expanded="true"] {
    transform: translateY(0);
  }
  /* Multi-column grids → single column */
  .grid-2,
  .grid-3,
  .grid-4 { grid-template-columns: 1fr !important; gap: var(--space-4); }
}

/* Tablet landscape / small laptop (≤960px) */
@media (max-width: 960px) {
  .grid-3,
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  /* Dashboard sidebar collapses to top nav */
  .dashboard-shell {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
  }
  .dashboard-nav {
    border-right: none;
    border-bottom: 1px solid var(--ink-100);
    overflow-x: auto;
    flex-direction: row;
  }
}

/* Desktop (≥961px) — defaults; nothing to override */

/* Large desktop (≥1280px) */
@media (min-width: 1280px) {
  :root {
    --container-base: 1080px;
    --container-wide: 1280px;
  }
}

/* Reduced motion ── already in components.css */

/* Print (light hint — V3 sites might be printed) */
@media print {
  body { background: white; color: black; }
  .btn, .modal, .sheet, .pill { display: none !important; }
}