/* === VARIABLES === */
:root {
  --c-primary:    #2563eb;
  --c-primary-dk: #1d4ed8;
  --c-success:    #16a34a;
  --c-success-bg: #dcfce7;
  --c-warning:    #d97706;
  --c-warning-bg: #fef3c7;
  --c-danger:     #dc2626;
  --c-danger-bg:  #fee2e2;
  --c-surface:    #ffffff;
  --c-bg:         #f5f7fb;
  --c-border:     #e5e7eb;
  --c-text:       #1f2937;
  --c-muted:      #6b7280;
  --c-nav:        #111827;
  --radius:       8px;
  --shadow-sm:    0 1px 3px rgba(0,0,0,.08);
}

/* === BASE === */
*, *::before, *::after { box-sizing: border-box; }
body { font-family: system-ui,-apple-system,sans-serif; background: var(--c-bg); color: var(--c-text); margin: 0; line-height: 1.5; }
h1 { font-size: 1.5rem; font-weight: 700; margin: 0 0 1.25rem; }
h2 { font-size: 1.125rem; font-weight: 600; margin: 0 0 .75rem; }
h3 { font-size: .7rem; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; color: var(--c-muted); margin: 0 0 .75rem; }
a { color: var(--c-primary); }
p { margin: .5rem 0 1rem; }

/* === NAVIGATION === */
.nav { background: var(--c-nav); padding: .5rem 1rem; display: flex; align-items: center; gap: .5rem; min-height: 56px; position: sticky; top: 0; z-index: 100; box-shadow: 0 2px 8px rgba(0,0,0,.25); }
.nav-brand { color: #fff; font-weight: 700; font-size: 1rem; text-decoration: none; white-space: nowrap; }
.nav-spacer { flex: 1; }
.nav-links { display: flex; align-items: center; gap: .125rem; }
.nav-links a { color: #d1d5db; text-decoration: none; padding: .45rem .7rem; border-radius: 6px; font-size: .875rem; transition: background .15s, color .15s; white-space: nowrap; }
.nav-links a:hover { background: rgba(255,255,255,.1); color: #fff; }
.nav-user { font-size: .8rem; color: #9ca3af; padding: .45rem .5rem; white-space: nowrap; }
.nav-logout { background: none; border: none; color: #d1d5db; cursor: pointer; padding: .45rem .7rem; border-radius: 6px; font-size: .875rem; transition: background .15s, color .15s; white-space: nowrap; }
.nav-logout:hover { background: rgba(255,255,255,.1); color: #fff; }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: .5rem; color: #fff; line-height: 0; }

/* === LAYOUT === */
.container { max-width: 1100px; margin: 1.5rem auto; padding: 0 1rem; }
.page-header { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.25rem; }
.page-header h1 { margin: 0; }
.page-header-actions { margin-left: auto; display: flex; gap: .5rem; flex-wrap: wrap; }

/* === BUTTONS === */
.btn, button { display: inline-flex; align-items: center; gap: .35rem; background: var(--c-primary); color: #fff; border: none; padding: .5rem 1rem; border-radius: 6px; font-size: .875rem; font-weight: 500; cursor: pointer; text-decoration: none; transition: background .15s; min-height: 38px; white-space: nowrap; }
.btn:hover, button:hover { background: var(--c-primary-dk); color: #fff; }
.btn-secondary { background: var(--c-surface); color: var(--c-text); border: 1px solid var(--c-border); }
.btn-secondary:hover { background: var(--c-bg); color: var(--c-text); }
.btn-danger, button.btn-danger { background: var(--c-danger); }
.btn-danger:hover, button.btn-danger:hover { background: #b91c1c; }
.btn-sm { padding: .3rem .65rem; font-size: .8rem; min-height: 32px; }
.nav-toggle, .nav-logout { min-height: unset; padding: .45rem .7rem; font-weight: normal; }
.nav-toggle { padding: .5rem; }
.nav-toggle:hover, .nav-logout:hover { background: rgba(255,255,255,.1); color: #fff; }

/* === FORMS === */
.card { background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--radius); padding: 1.25rem; margin: 0 0 1rem; box-shadow: var(--shadow-sm); }
.form-section { margin-bottom: 1.25rem; padding-bottom: 1.25rem; border-bottom: 1px solid var(--c-border); }
.form-section:last-of-type { margin-bottom: 0; padding-bottom: 0; border-bottom: none; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: .75rem; }
.form-actions { display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; margin-top: 1rem; }
label { display: grid; gap: .3rem; font-size: .875rem; font-weight: 500; }
input, select, textarea { padding: .5rem .75rem; border: 1px solid var(--c-border); border-radius: 6px; font-size: .875rem; color: var(--c-text); background: var(--c-surface); width: 100%; transition: border-color .15s; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--c-primary); box-shadow: 0 0 0 3px rgba(37,99,235,.12); }
.inline { display: inline-flex; gap: .5rem; align-items: center; }
.inline-grid { display: flex; gap: .75rem; flex-wrap: wrap; align-items: flex-end; }

/* === METRIC CARDS === */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.metric-card { background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--radius); padding: 1.25rem; box-shadow: var(--shadow-sm); border-left: 4px solid var(--c-border); }
.metric-card.ok  { border-left-color: var(--c-success); }
.metric-card.warn { border-left-color: var(--c-warning); }
.metric-card.bad  { border-left-color: var(--c-danger); }
.metric-card.info { border-left-color: var(--c-primary); }
.metric-label { font-size: .72rem; text-transform: uppercase; letter-spacing: .05em; color: var(--c-muted); font-weight: 600; }
.metric-value { font-size: 2rem; font-weight: 700; line-height: 1.2; margin-top: .25rem; }
.metric-card.ok   .metric-value { color: var(--c-success); }
.metric-card.warn .metric-value { color: var(--c-warning); }
.metric-card.bad  .metric-value { color: var(--c-danger); }
.metric-card.info .metric-value { color: var(--c-primary); }

/* === QUICK ACTIONS === */
.quick-actions { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.quick-card { background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--radius); padding: 1.25rem 1.5rem; text-decoration: none; color: var(--c-text); display: flex; align-items: center; gap: .75rem; box-shadow: var(--shadow-sm); transition: box-shadow .15s, border-color .15s; }
.quick-card:hover { box-shadow: 0 4px 12px rgba(0,0,0,.1); border-color: var(--c-primary); color: var(--c-primary); }
.quick-card-icon { width: 36px; height: 36px; border-radius: 8px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.quick-card-icon.blue { background: #dbeafe; color: var(--c-primary); }
.quick-card-icon.green { background: var(--c-success-bg); color: var(--c-success); }
.quick-card-icon.orange { background: var(--c-warning-bg); color: var(--c-warning); }
.quick-card span { font-weight: 500; font-size: .9rem; }

/* === TABLES === */
.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--c-border); box-shadow: var(--shadow-sm); margin-bottom: 1rem; }
table { width: 100%; border-collapse: collapse; background: var(--c-surface); font-size: .875rem; }
thead { background: #f9fafb; }
th { padding: .625rem .875rem; text-align: left; font-size: .72rem; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; color: var(--c-muted); border-bottom: 1px solid var(--c-border); white-space: nowrap; }
td { padding: .625rem .875rem; border-bottom: 1px solid var(--c-border); color: var(--c-text); vertical-align: middle; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: #f9fafb; }
.td-actions { display: flex; gap: .375rem; flex-wrap: wrap; }

/* === BADGES === */
.badge { display: inline-flex; align-items: center; padding: .2rem .55rem; border-radius: 999px; font-size: .72rem; font-weight: 600; white-space: nowrap; }
.badge-ok      { background: var(--c-success-bg); color: var(--c-success); }
.badge-warn    { background: var(--c-warning-bg); color: var(--c-warning); }
.badge-bad     { background: var(--c-danger-bg);  color: var(--c-danger); }
.badge-neutral { background: #f3f4f6; color: var(--c-muted); }
.badge-blue    { background: #dbeafe; color: var(--c-primary-dk); }

/* === ALERTS === */
.alert { padding: .75rem 1rem; border-radius: var(--radius); margin: 0 0 1rem; font-size: .875rem; border: 1px solid transparent; }
.ok  { background: var(--c-success-bg); color: #14532d; border-color: #86efac; }
.bad { background: var(--c-danger-bg);  color: #7f1d1d; border-color: #fca5a5; }

/* === ATTENDANCE BANNER === */
.attendance-banner { padding: 1rem 1.25rem; border-radius: var(--radius); margin-bottom: 1.25rem; display: flex; align-items: center; gap: .75rem; font-weight: 600; border: 1px solid transparent; }
.attendance-banner.in   { background: var(--c-success-bg); color: #14532d; border-color: #86efac; }
.attendance-banner.out  { background: #eff6ff; color: #1e3a8a; border-color: #93c5fd; }
.attendance-banner.none { background: #f9fafb; color: var(--c-muted); border-color: var(--c-border); }
.attendance-actions { display: flex; gap: .75rem; margin-bottom: 1.25rem; flex-wrap: wrap; }
.attendance-actions .btn { padding: .65rem 1.5rem; font-size: .95rem; }

/* === GUEST / AUTH LAYOUT === */
.guest-body { display: flex; min-height: 100vh; align-items: center; justify-content: center; background: var(--c-bg); }
.guest-box { width: 100%; max-width: 400px; padding: 1rem; }
.guest-brand { text-align: center; margin-bottom: 1.5rem; }
.guest-brand-logo { width: 52px; height: 52px; background: var(--c-primary); border-radius: 14px; display: inline-flex; align-items: center; justify-content: center; margin-bottom: .75rem; }
.guest-brand h1 { font-size: 1.25rem; color: var(--c-text); margin: 0 0 .25rem; }
.guest-brand p  { margin: 0; color: var(--c-muted); font-size: .875rem; }
.guest-box .card { padding: 1.5rem; }
.guest-box .card label { margin-bottom: .5rem; }
.guest-box .card button { width: 100%; justify-content: center; margin-top: .25rem; }
.guest-links { text-align: center; margin-top: .75rem; font-size: .875rem; }

/* === ERROR PAGE === */
.error-page { text-align: center; padding: 4rem 1rem; }
.error-code { font-size: 6rem; font-weight: 800; color: var(--c-border); line-height: 1; margin-bottom: .5rem; }
.error-page h1 { font-size: 1.5rem; margin-bottom: .5rem; }
.error-page p  { color: var(--c-muted); margin-bottom: 1.5rem; }

/* === PAGINATION === */
.pagination { display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; margin-top: .75rem; }

/* === RESPONSIVE === */
@media (max-width: 767px) {
  .nav-toggle { display: flex; }
  .nav-links { display: none; flex-direction: column; align-items: flex-start; gap: .25rem; position: absolute; top: 56px; left: 0; right: 0; background: var(--c-nav); padding: .75rem 1rem; box-shadow: 0 4px 12px rgba(0,0,0,.25); z-index: 99; }
  .nav-links.open { display: flex; }
  .nav-links a { width: 100%; }
  .nav-user { display: none; }
  .hide-mobile { display: none !important; }
  .page-header { flex-direction: column; align-items: flex-start; }
  .page-header-actions { margin-left: 0; }
  .form-grid { grid-template-columns: 1fr; }
  h1 { font-size: 1.25rem; }
  .metric-value { font-size: 1.5rem; }
  .attendance-actions .btn { width: 100%; justify-content: center; }
}