/**
 * css/responsive.css
 * ──────────────────
 * All responsive breakpoints. Loaded last so it overrides component styles.
 * No visual changes from the original — pure layout/size adjustments.
 */

/* ── Large tablet / small laptop ≤1024px ── */
@media(max-width:1024px){
  nav{padding:0 24px}
  .container{padding:0 24px}
  .section{padding:72px 0}
  .dash-main{padding:28px 24px}
  .sidebar{width:210px}
  .stat-item{padding:22px 16px}
  .stat-num{font-size:44px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
}

/* ── Tablet ≤900px ── */
@media(max-width:900px){
  /* Nav: show hamburger, hide desktop links */
  .nav-links{display:none}
  .nav-hamburger{display:flex}
  .user-pill{display:none}

  /* Grids */
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:1fr 1fr}
  .grid-2{grid-template-columns:1fr}

  /* Stats: 2×2 */
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .stat-num{font-size:42px}

  /* Sidebar: off-canvas drawer */
  .sidebar{position:fixed;top:var(--nav-height);left:-260px;z-index:900;width:240px;height:calc(100vh - var(--nav-height));transition:left 0.3s ease;overflow-y:auto;box-shadow:4px 0 32px rgba(0,0,0,0.6)}
  .sidebar.open{left:0}
  .sidebar-toggle{display:flex !important}
  .dash-main{padding:20px;padding-top:0}

  .section{padding:56px 0}
  .modal-box{padding:28px}
}

/* ── Mobile ≤640px ── */
@media(max-width:640px){
  :root{--nav-height:60px}
  nav{padding:0 16px;height:60px}

  .container{padding:0 16px}
  .section{padding:44px 0}
  .section-title{font-size:clamp(28px,8vw,44px)}
  .section-sub{font-size:14px}

  /* Stack everything */
  .grid-4,.grid-3,.grid-2{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}

  /* Stats */
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .stat-item{padding:16px 10px}
  .stat-num{font-size:32px}
  .stat-lbl{font-size:10px;letter-spacing:0.1em}

  /* Hero buttons: stack */
  .hero-btn-row{flex-direction:column !important;align-items:stretch !important}
  .hero-btn-row .btn{width:100%;justify-content:center}

  /* Dashboard */
  .dash-layout{flex-direction:column}
  .dash-main{padding:16px}

  /* Quick cards: 2-col compact */
  .quick-grid-4{grid-template-columns:1fr 1fr !important}
  .quick-card{padding:18px 14px}
  .quick-card .qc-icon{font-size:26px;margin-bottom:10px}
  .quick-card .qc-title{font-size:17px}
  .quick-card .qc-desc{font-size:11px}

  /* Modal: bottom sheet style */
  .modal-overlay{padding:0;align-items:flex-end}
  .modal-box{border-radius:20px 20px 0 0;padding:28px 20px;max-height:88vh}

  /* Steps: compact labels */
  .step-lbl{font-size:9px;letter-spacing:0.02em}
  .step-dot{width:26px;height:26px;font-size:11px}
  .step::before{top:13px}

  /* Tables */
  .tbl th,.tbl td{padding:10px 10px;font-size:12px}

  /* Action button groups: stack */
  .act-btns{flex-direction:column !important}
  .act-btns .btn{width:100%;justify-content:center}

  /* Header rows with flex: stack */
  .flex-header{flex-direction:column !important;gap:12px !important;align-items:flex-start !important}

  /* Timeline */
  .timeline{padding-left:24px}
  .tl-dot{left:-31px;width:12px;height:12px;top:5px}

  /* Cap buttons grid */
  .cap-grid{grid-template-columns:1fr 1fr !important}

  /* Misc */
  .divider{margin:20px 0}
  .notice{padding:14px 16px;font-size:13px}
  .user-pill{margin-left:0}

  /* Product management flex: stack */
  .prod-mgmt-row{flex-direction:column !important;align-items:flex-start !important}
  .prod-mgmt-row > div:last-child{flex-direction:column;width:100%}
  .prod-mgmt-row .btn{width:100%;justify-content:center}

  /* Footer responsive: stack */
  footer > div:first-child{
    grid-template-columns:1fr !important;
    gap:28px !important;
  }
  footer{padding:32px 16px 24px !important}

  /* Register / Login form */
  .glass-card{padding:24px !important}
}

/* ── Small mobile ≤480px ── */
@media(max-width:480px){
  .form-grid{grid-template-columns:1fr !important}
}

/* ── Very small mobile ≤380px ── */
@media(max-width:380px){
  .stat-num{font-size:26px}
  .quick-grid-4{grid-template-columns:1fr !important}
  .steps{overflow-x:auto;padding-bottom:4px}
  #cap-grid{grid-template-columns:1fr !important}
}

/* ── HiDPI/Retina refinements ── */
@media(-webkit-min-device-pixel-ratio:2),(min-resolution:192dpi),(min-resolution:2dppx){
  .glass-card{backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px)}
  nav{backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px)}
}