/* public/css/app.css — BioQMS Design System */
/* Clean, regulated-industry aesthetic: clinical, trustworthy, precise */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@300;400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

/* ── CSS Variables ──────────────────────────────────────────────────── */
:root {
  --color-bg:         #f4f6f9;
  --color-surface:    #ffffff;
  --color-surface-2:  #f8fafc;
  --color-border:     #dde2ea;
  --color-border-2:   #c8d0db;

  --color-text:       #1a2332;
  --color-text-2:     #4a5568;
  --color-text-muted: #8a95a3;

  --color-primary:    #1a4f8a;
  --color-primary-h:  #1560a8;
  --color-primary-lt: #e8f0fb;

  --color-success:    #0d7a4e;
  --color-success-bg: #e6f4ee;
  --color-warning:    #b35c00;
  --color-warning-bg: #fff3e0;
  --color-danger:     #c0392b;
  --color-danger-bg:  #fdecea;
  --color-info:       #1565c0;
  --color-info-bg:    #e3f0ff;

  --color-qa:         #6b3fa0;   /* QA purple */
  --color-qa-bg:      #f3edfb;

  --sidebar-width:    240px;
  --header-height:    56px;
  --radius:           6px;
  --radius-lg:        10px;
  --shadow:           0 1px 4px rgba(0,0,0,0.08), 0 0 0 1px rgba(0,0,0,0.04);
  --shadow-md:        0 4px 12px rgba(0,0,0,0.10), 0 1px 3px rgba(0,0,0,0.06);
  --transition:       0.18s ease;

  --font-sans: 'IBM Plex Sans', -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

/* ── Reset ──────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; font-family: var(--font-sans); background: var(--color-bg); color: var(--color-text); font-size: 14px; line-height: 1.6; -webkit-font-smoothing: antialiased; }
h1,h2,h3,h4,h5,h6 { margin: 0 0 0.5em; font-weight: 600; line-height: 1.3; }
p { margin: 0 0 1em; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img { max-width: 100%; }
table { border-collapse: collapse; width: 100%; }

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

/* ── Sidebar ────────────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-width);
  background: var(--color-text);
  color: #e2e8f0;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  overflow-y: auto;
}
.sidebar-brand {
  padding: 20px 20px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.sidebar-brand .brand-name {
  font-size: 18px;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.5px;
}
.sidebar-brand .brand-sub {
  font-size: 11px;
  color: rgba(255,255,255,0.4);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 2px;
}
.sidebar-section {
  padding: 16px 0 8px;
}
.sidebar-section-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: rgba(255,255,255,0.3);
  padding: 0 20px 6px;
}
.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 20px;
  color: rgba(255,255,255,0.7);
  font-size: 13.5px;
  transition: var(--transition);
  border-left: 3px solid transparent;
}
.sidebar-nav a:hover, .sidebar-nav a.active {
  background: rgba(255,255,255,0.06);
  color: #fff;
  text-decoration: none;
  border-left-color: var(--color-primary);
}
.sidebar-nav a .nav-icon {
  width: 18px;
  text-align: center;
  opacity: 0.7;
  flex-shrink: 0;
  font-style: normal;
}
.sidebar-nav a:hover .nav-icon, .sidebar-nav a.active .nav-icon { opacity: 1; }
.sidebar-badge {
  margin-left: auto;
  background: var(--color-danger);
  color: #fff;
  font-size: 10px;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 10px;
  min-width: 18px;
  text-align: center;
}
.sidebar-footer {
  margin-top: auto;
  padding: 16px 20px;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 12.5px;
  color: rgba(255,255,255,0.45);
}
.sidebar-footer .user-name { color: rgba(255,255,255,0.8); font-weight: 500; }
.sidebar-footer .user-role {
  font-size: 11px;
  color: rgba(255,255,255,0.35);
  text-transform: capitalize;
}
.sidebar-footer a { color: rgba(255,255,255,0.5); font-size: 12px; }
.sidebar-footer a:hover { color: #fff; }

/* ── Main Content ───────────────────────────────────────────────────── */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.top-bar {
  height: var(--header-height);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 12px;
  position: sticky;
  top: 0;
  z-index: 50;
}
.top-bar-title { font-size: 16px; font-weight: 600; color: var(--color-text); }
.top-bar-breadcrumb { font-size: 13px; color: var(--color-text-muted); }
.top-bar-breadcrumb a { color: var(--color-text-2); }
.top-bar-spacer { flex: 1; }
.top-bar-actions { display: flex; align-items: center; gap: 8px; }
.page-body { padding: 24px; flex: 1; }

/* ── Cards ──────────────────────────────────────────────────────────── */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}
.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.card-title { font-size: 14px; font-weight: 600; color: var(--color-text); }
.card-body { padding: 20px; }

/* ── Stats Grid ─────────────────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow);
}
.stat-card .stat-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}
.stat-card .stat-value {
  font-size: 32px;
  font-weight: 300;
  font-family: var(--font-mono);
  color: var(--color-text);
  line-height: 1;
  margin-bottom: 4px;
}
.stat-card .stat-sub { font-size: 12px; color: var(--color-text-muted); }
.stat-card.danger .stat-value  { color: var(--color-danger); }
.stat-card.warning .stat-value { color: var(--color-warning); }
.stat-card.success .stat-value { color: var(--color-success); }
.stat-card.primary .stat-value { color: var(--color-primary); }

/* ── Buttons ────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius);
  font-size: 13.5px;
  font-weight: 500;
  font-family: var(--font-sans);
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
  line-height: 1;
}
.btn:hover { text-decoration: none; }
.btn-primary   { background: var(--color-primary);   color: #fff; border-color: var(--color-primary); }
.btn-primary:hover  { background: var(--color-primary-h); border-color: var(--color-primary-h); }
.btn-secondary { background: var(--color-surface);   color: var(--color-text-2); border-color: var(--color-border-2); }
.btn-secondary:hover { background: var(--color-surface-2); color: var(--color-text); }
.btn-danger    { background: var(--color-danger);    color: #fff; border-color: var(--color-danger); }
.btn-danger:hover   { background: #a93226; }
.btn-success   { background: var(--color-success);   color: #fff; }
.btn-sm  { padding: 5px 10px; font-size: 12.5px; }
.btn-lg  { padding: 11px 22px; font-size: 15px; }

/* ── Forms ──────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 18px; }
.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-2);
  margin-bottom: 6px;
}
.form-label .required { color: var(--color-danger); margin-left: 2px; }
.form-control {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--color-border-2);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-surface);
  transition: var(--transition);
  outline: none;
}
.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26,79,138,0.12);
}
.form-control::placeholder { color: var(--color-text-muted); }
textarea.form-control { resize: vertical; min-height: 90px; }
select.form-control { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%238a95a3' d='M1 1l5 5 5-5'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 32px; }
.form-hint { font-size: 12px; color: var(--color-text-muted); margin-top: 4px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ── Alerts / Flash ─────────────────────────────────────────────────── */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius);
  border-left: 4px solid;
  margin-bottom: 16px;
  font-size: 13.5px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.alert-success { background: var(--color-success-bg); border-color: var(--color-success); color: #0a5c39; }
.alert-error, .alert-danger { background: var(--color-danger-bg); border-color: var(--color-danger); color: #922b21; }
.alert-warning { background: var(--color-warning-bg); border-color: var(--color-warning); color: #7d4100; }
.alert-info    { background: var(--color-info-bg);    border-color: var(--color-info);    color: #0d47a1; }

/* ── Tables ─────────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
.data-table { width: 100%; font-size: 13.5px; }
.data-table thead th {
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  padding: 10px 16px;
  border-bottom: 2px solid var(--color-border);
  text-align: left;
  white-space: nowrap;
}
.data-table tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tbody tr:hover { background: var(--color-surface-2); }

/* ── Status Badges ──────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.badge-draft      { background: #e2e8f0; color: #4a5568; }
.badge-open       { background: var(--color-info-bg); color: var(--color-info); }
.badge-review     { background: var(--color-warning-bg); color: var(--color-warning); }
.badge-approved   { background: var(--color-success-bg); color: var(--color-success); }
.badge-effective  { background: var(--color-success-bg); color: var(--color-success); }
.badge-closed     { background: #e2e8f0; color: #4a5568; }
.badge-overdue    { background: var(--color-danger-bg); color: var(--color-danger); }
.badge-cancelled  { background: #e2e8f0; color: #a0aec0; }
.badge-pending    { background: var(--color-warning-bg); color: var(--color-warning); }

/* ── Login Page ─────────────────────────────────────────────────────── */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-text);
  background-image: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 40px,
    rgba(255,255,255,0.015) 40px,
    rgba(255,255,255,0.015) 80px
  );
}
.login-box {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 48px 44px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.35);
}
.login-logo {
  text-align: center;
  margin-bottom: 32px;
}
.login-logo .logo-name {
  font-size: 28px;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 1px;
}
.login-logo .logo-tagline {
  font-size: 12px;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-top: 4px;
}
.login-box h2 { font-size: 18px; margin-bottom: 24px; color: var(--color-text-2); font-weight: 400; }

/* ── Utilities ──────────────────────────────────────────────────────── */
.text-muted   { color: var(--color-text-muted); }
.text-danger  { color: var(--color-danger); }
.text-success { color: var(--color-success); }
.text-right   { text-align: right; }
.text-center  { text-align: center; }
.mb-0  { margin-bottom: 0; }
.mb-1  { margin-bottom: 8px; }
.mb-2  { margin-bottom: 16px; }
.mb-3  { margin-bottom: 24px; }
.mt-1  { margin-top: 8px; }
.mt-2  { margin-top: 16px; }
.mt-3  { margin-top: 24px; }
.flex  { display: flex; }
.flex-center { display: flex; align-items: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.w-100 { width: 100%; }
.hidden { display: none; }

/* ── Responsive ─────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); transition: transform 0.25s ease; }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
}