/**
 * Manna Biotech Student Portal — Luxury Apple-Style Mobile-First Overlay
 * Drops in via <link rel="stylesheet" href="/manna-student-luxe.css">
 * Non-destructive: overlays the existing v16 styles with Apple HIG-inspired design.
 * Optimised for iOS / Android phones (primary device for our students).
 */

/* ═══════════════════════════════════════════════════════════════════════
   CSS variables — Apple-luxe palette tuned for biotech brand
   ═══════════════════════════════════════════════════════════════════════ */
:root {
  /* Brand */
  --mb-bg:           #0b1418;
  --mb-bg-soft:      #0f1c20;
  --mb-card:         rgba(255,255,255,0.04);
  --mb-card-hi:      rgba(255,255,255,0.07);
  --mb-line:         rgba(255,255,255,0.10);
  --mb-line-hi:      rgba(255,255,255,0.18);
  --mb-text:         #f2f5f3;
  --mb-text-soft:    rgba(242,245,243,0.72);
  --mb-text-mute:    rgba(242,245,243,0.52);
  --mb-emerald:      #15c47a;
  --mb-emerald-soft: rgba(21,196,122,0.18);
  --mb-gold:         #d8b35a;
  --mb-gold-soft:    rgba(216,179,90,0.18);
  --mb-rose:         #ef5370;
  --mb-info:         #4ec0ff;

  /* Apple-style radii */
  --r-xs: 10px;
  --r-sm: 14px;
  --r-md: 18px;
  --r-lg: 22px;
  --r-xl: 28px;

  /* iOS-grade shadows */
  --sh-xs: 0 1px 2px rgba(0,0,0,0.18);
  --sh-sm: 0 2px 8px rgba(0,0,0,0.20), 0 1px 3px rgba(0,0,0,0.10);
  --sh-md: 0 8px 24px -6px rgba(0,0,0,0.40), 0 2px 6px rgba(0,0,0,0.16);
  --sh-lg: 0 22px 48px -12px rgba(0,0,0,0.55), 0 6px 14px rgba(0,0,0,0.22);

  /* SF Pro–like font stack */
  --mb-font: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --mb-font-display: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Safe areas (notched iPhones) */
  --safe-top:    env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left:   env(safe-area-inset-left, 0px);
  --safe-right:  env(safe-area-inset-right, 0px);
}

/* ═══════════════════════════════════════════════════════════════════════
   Global reset overrides — Apple HIG body
   ═══════════════════════════════════════════════════════════════════════ */
html, body {
  font-family: var(--mb-font) !important;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-tap-highlight-color: transparent;
  letter-spacing: -0.01em;
  font-feature-settings: "ss01" on, "cv11" on;
}
body {
  padding-top: var(--safe-top);
  padding-bottom: calc(var(--safe-bottom) + 0px);
  padding-left: var(--safe-left);
  padding-right: var(--safe-right);
}

/* Smooth-scroll on iOS */
html { scroll-behavior: smooth; }
body, .scroll, .body-scroll { -webkit-overflow-scrolling: touch; }

/* Prevent rubber-banding white flash on iOS */
html, body { overscroll-behavior-y: none; }

/* ═══════════════════════════════════════════════════════════════════════
   Login screen — luxe hero card
   ═══════════════════════════════════════════════════════════════════════ */
@media (max-width: 768px) {
  body { font-size: 15px; }
  /* Login card on mobile */
  .login-card, .login-shell, [class*="login"] form, [id*="login"] form {
    border-radius: var(--r-xl) !important;
    padding: 22px 18px !important;
    box-shadow: var(--sh-lg);
  }
}

/* ═══════════════════════════════════════════════════════════════════════
   App shell — header + main content area
   ═══════════════════════════════════════════════════════════════════════ */
header, .app-header, .topbar, [class*="topbar"] {
  background: rgba(11,20,24,0.78);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 0.5px solid var(--mb-line);
  position: sticky; top: 0;
  z-index: 200;
  padding-top: var(--safe-top);
}
.head, .app-header h1, .topbar h1 {
  letter-spacing: -0.02em;
  font-weight: 700;
}

/* Buttons — iOS button style */
button, .btn, input[type="submit"] {
  font-family: var(--mb-font);
  font-weight: 600;
  letter-spacing: -0.01em;
  border-radius: var(--r-sm);
  transition: transform 0.18s cubic-bezier(0.2,0.8,0.2,1), background 0.18s, box-shadow 0.18s;
  -webkit-tap-highlight-color: transparent;
}
button:active, .btn:active {
  transform: scale(0.96);
}

/* Primary CTA — emerald gradient */
.btn-primary, button.primary, .btn.primary, .btn.be {
  background: linear-gradient(135deg, var(--mb-emerald), #0fa264) !important;
  color: #fff !important;
  border: none !important;
  box-shadow: 0 4px 14px -4px rgba(21,196,122,0.45);
  min-height: 44px; /* iOS HIG touch target */
}

/* Ghost / secondary */
.btn.bo, .btn-ghost {
  background: var(--mb-card) !important;
  color: var(--mb-text) !important;
  border: 0.5px solid var(--mb-line-hi) !important;
}

/* ═══════════════════════════════════════════════════════════════════════
   Cards — Apple-luxe rounded glass
   ═══════════════════════════════════════════════════════════════════════ */
.card, .pn, .panel, [class*="card"]:not([class*="tier"]) {
  background: var(--mb-card) !important;
  border: 0.5px solid var(--mb-line) !important;
  border-radius: var(--r-lg) !important;
  box-shadow: var(--sh-sm);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
}
.pn .ph, .card-header {
  background: transparent !important;
  border-bottom: 0.5px solid var(--mb-line) !important;
  padding: 16px 18px !important;
}
.pn .pb, .card-body {
  padding: 16px 18px !important;
}

/* Stat cards — KPI tiles */
.sg, .stats-grid {
  display: grid !important;
  gap: 10px !important;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)) !important;
}
.sc, .stat-card {
  background: var(--mb-card) !important;
  border: 0.5px solid var(--mb-line) !important;
  border-radius: var(--r-md) !important;
  padding: 16px 14px !important;
  text-align: left;
  transition: transform 0.18s, background 0.18s;
}
.sc:active { transform: scale(0.98); background: var(--mb-card-hi) !important; }
.sl, .stat-label {
  font-size: 11px !important;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--mb-text-mute) !important;
  font-weight: 600 !important;
}
.sv, .stat-value {
  font-size: 26px !important;
  font-weight: 700 !important;
  color: var(--mb-text) !important;
  margin-top: 4px !important;
  letter-spacing: -0.02em !important;
  font-feature-settings: "tnum" on;
}

/* ═══════════════════════════════════════════════════════════════════════
   Forms — iOS-style inputs
   ═══════════════════════════════════════════════════════════════════════ */
input[type="text"], input[type="email"], input[type="tel"], input[type="password"],
input[type="number"], input[type="date"], input[type="datetime-local"], input[type="search"],
select, textarea {
  background: var(--mb-card) !important;
  border: 0.5px solid var(--mb-line) !important;
  border-radius: var(--r-sm) !important;
  color: var(--mb-text) !important;
  font-family: var(--mb-font) !important;
  font-size: 16px !important; /* iOS won't auto-zoom on focus */
  padding: 12px 14px !important;
  min-height: 44px; /* iOS HIG */
  transition: border 0.2s, background 0.2s, box-shadow 0.2s;
}
input:focus, select:focus, textarea:focus {
  outline: none !important;
  border-color: var(--mb-emerald) !important;
  background: var(--mb-card-hi) !important;
  box-shadow: 0 0 0 3px var(--mb-emerald-soft);
}
label {
  font-size: 11.5px !important;
  font-weight: 600 !important;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--mb-text-mute) !important;
  margin-bottom: 6px !important;
}

/* Select arrow chevron in SF style */
select { background-image: linear-gradient(45deg, transparent 50%, var(--mb-text-soft) 50%), linear-gradient(135deg, var(--mb-text-soft) 50%, transparent 50%); background-position: calc(100% - 16px) center, calc(100% - 12px) center; background-size: 4px 4px, 4px 4px; background-repeat: no-repeat; padding-right: 36px !important; appearance: none; -webkit-appearance: none; }

/* ═══════════════════════════════════════════════════════════════════════
   Tables → mobile cards (responsive)
   ═══════════════════════════════════════════════════════════════════════ */
@media (max-width: 640px) {
  table { display: block; }
  thead { display: none; }
  tbody, tr { display: block; }
  tr {
    background: var(--mb-card);
    border: 0.5px solid var(--mb-line);
    border-radius: var(--r-md);
    padding: 12px 14px;
    margin-bottom: 10px;
  }
  td {
    display: flex;
    justify-content: space-between;
    border: none !important;
    padding: 4px 0 !important;
    font-size: 13.5px;
  }
  td::before {
    content: attr(data-label);
    font-weight: 600;
    color: var(--mb-text-mute);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
  }
}

/* ═══════════════════════════════════════════════════════════════════════
   Modal — bottom sheet on mobile (iOS-style), centered on desktop
   ═══════════════════════════════════════════════════════════════════════ */
.modal-bg, .ovl, [class*="modal-overlay"] {
  background: rgba(0,0,0,0.62) !important;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.modal, .mdl, .modal-content {
  background: var(--mb-bg-soft) !important;
  border: 0.5px solid var(--mb-line-hi) !important;
  border-radius: var(--r-xl) !important;
  box-shadow: var(--sh-lg);
}
@media (max-width: 640px) {
  .modal, .mdl, .modal-content {
    border-radius: var(--r-xl) var(--r-xl) 0 0 !important;
    margin: 0 !important;
    max-width: 100vw !important;
    width: 100vw !important;
    max-height: 90vh;
    position: fixed !important;
    bottom: 0 !important;
    left: 0 !important;
    right: 0 !important;
    padding-bottom: calc(20px + var(--safe-bottom)) !important;
    animation: mb-slide-up 0.32s cubic-bezier(0.2,0.8,0.2,1);
  }
  @keyframes mb-slide-up {
    from { transform: translateY(100%); }
    to   { transform: translateY(0); }
  }
}

/* ═══════════════════════════════════════════════════════════════════════
   Bottom tab bar (mobile only) — iOS-style segmented nav
   Drops in via JS; this styles it.
   ═══════════════════════════════════════════════════════════════════════ */
#mb-tabbar {
  display: none;
  position: fixed; bottom: 0; left: 0; right: 0;
  background: rgba(11,20,24,0.85);
  backdrop-filter: saturate(180%) blur(28px);
  -webkit-backdrop-filter: saturate(180%) blur(28px);
  border-top: 0.5px solid var(--mb-line);
  padding: 8px 0 calc(8px + var(--safe-bottom));
  z-index: 9000;
  justify-content: space-around;
  align-items: stretch;
}
@media (max-width: 768px) {
  #mb-tabbar { display: flex; }
  body { padding-bottom: calc(74px + var(--safe-bottom)) !important; }
  /* Hide the side nav on mobile — tabbar replaces it */
  .nav, .sidebar, .sidenav { display: none !important; }
}
.mb-tab {
  flex: 1;
  display: flex; flex-direction: column; align-items: center; gap: 3px;
  background: transparent; border: none;
  color: var(--mb-text-mute);
  font-size: 10.5px; font-weight: 600;
  padding: 4px 4px 0;
  cursor: pointer;
  transition: color 0.2s;
  -webkit-tap-highlight-color: transparent;
}
.mb-tab .ic { font-size: 22px; line-height: 1; }
.mb-tab.active { color: var(--mb-emerald); }
.mb-tab:active { transform: scale(0.92); }

/* ═══════════════════════════════════════════════════════════════════════
   Floating Action Buttons (FAB) — for "+ Add Daily Log" etc.
   ═══════════════════════════════════════════════════════════════════════ */
.fab, [class*="fab"] {
  border-radius: 50% !important;
  width: 58px !important; height: 58px !important;
  box-shadow: 0 14px 30px -8px rgba(21,196,122,0.45), var(--sh-md) !important;
  display: flex; align-items: center; justify-content: center;
}

/* ═══════════════════════════════════════════════════════════════════════
   Toasts — iOS-style pill notifications
   ═══════════════════════════════════════════════════════════════════════ */
.toast, [class*="toast"] {
  background: rgba(20,30,34,0.94) !important;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 0.5px solid var(--mb-line) !important;
  border-radius: 99px !important;
  padding: 10px 18px !important;
  box-shadow: var(--sh-md) !important;
  font-weight: 600;
  letter-spacing: -0.01em;
}

/* ═══════════════════════════════════════════════════════════════════════
   Daily-log card — mobile readability
   ═══════════════════════════════════════════════════════════════════════ */
[class*="daily"] [class*="entry"], [class*="log-entry"] {
  background: var(--mb-card);
  border-radius: var(--r-md);
  padding: 14px 16px;
  margin-bottom: 10px;
  border: 0.5px solid var(--mb-line);
}

/* File picker zones (camera + gallery buttons we just added) */
.fup-zone {
  background: var(--mb-card) !important;
  border: 1.5px dashed var(--mb-line-hi) !important;
  border-radius: var(--r-md) !important;
  padding: 18px 14px !important;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  display: block;
}
.fup-zone:active { transform: scale(0.97); border-color: var(--mb-emerald) !important; background: var(--mb-card-hi) !important; }
.fup-ic { font-size: 28px; margin-bottom: 6px; }
.fup-t  { font-weight: 700; font-size: 13.5px; color: var(--mb-text); }
.fup-s  { font-size: 11px; color: var(--mb-text-mute); margin-top: 2px; }

/* File chip list */
.fup-list { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.fup-chip {
  background: var(--mb-card);
  border: 0.5px solid var(--mb-line);
  border-radius: 99px;
  padding: 5px 12px;
  font-size: 11.5px;
  color: var(--mb-text-soft);
  display: inline-flex; align-items: center; gap: 6px;
}
.fup-chip.uploading { border-color: var(--mb-info); color: var(--mb-info); }
.fup-chip.done      { border-color: var(--mb-emerald); color: var(--mb-emerald); }
.fup-chip.err       { border-color: var(--mb-rose); color: var(--mb-rose); }
.fup-x { cursor: pointer; opacity: 0.6; padding-left: 4px; }
.fup-x:hover { opacity: 1; }

/* ═══════════════════════════════════════════════════════════════════════
   PWA install banner (shown by JS)
   ═══════════════════════════════════════════════════════════════════════ */
#mb-install-banner {
  display: none;
  position: fixed;
  bottom: calc(82px + var(--safe-bottom));
  left: 12px; right: 12px;
  background: linear-gradient(135deg, rgba(21,196,122,0.16), rgba(216,179,90,0.10)), var(--mb-bg-soft);
  border: 0.5px solid var(--mb-emerald-soft);
  border-radius: var(--r-lg);
  padding: 14px 16px;
  display: flex; align-items: center; gap: 12px;
  box-shadow: var(--sh-lg);
  z-index: 8500;
  animation: mb-pop 0.45s cubic-bezier(0.2,0.8,0.2,1);
}
@keyframes mb-pop {
  from { transform: translateY(120%); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}
#mb-install-banner.show { display: flex; }
#mb-install-banner .icon { font-size: 32px; }
#mb-install-banner .text { flex: 1; }
#mb-install-banner .text h4 { margin: 0; font-size: 14px; font-weight: 700; color: var(--mb-text); }
#mb-install-banner .text p  { margin: 2px 0 0; font-size: 12px; color: var(--mb-text-mute); }
#mb-install-banner button {
  background: linear-gradient(135deg, var(--mb-emerald), #0fa264);
  color: #fff; border: none;
  padding: 8px 16px; border-radius: 99px;
  font-weight: 700; font-size: 12.5px;
  cursor: pointer;
}
#mb-install-banner .x {
  background: transparent; color: var(--mb-text-mute);
  border: none; font-size: 18px; padding: 4px 8px; cursor: pointer;
}

/* ═══════════════════════════════════════════════════════════════════════
   Reduce motion for accessibility
   ═══════════════════════════════════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ═══════════════════════════════════════════════════════════════════════
   Light-mode auto fallback (preserves existing dark theme by default)
   ═══════════════════════════════════════════════════════════════════════ */
@media (prefers-color-scheme: light) {
  /* Manna brand stays dark — students like the lab-themed dark UI.
     But honour user choice if they explicitly toggle a light mode later. */
}