/* =========================================================================
   CertGuard — design tokens
   ========================================================================= */
:root{
  --bg:            #0b1220;
  --bg-elevated:   #101a2e;
  --surface:       #131f38;
  --surface-hover: #16274a;
  --border:        #22314f;
  --text:          #e8edf7;
  --text-dim:      #97a3bf;
  --text-faint:    #6b7794;
  --accent:        #34d399;
  --accent-strong: #10b981;
  --accent-soft:   rgba(52,211,153,.12);
  --warn:          #f59e0b;
  --warn-soft:     rgba(245,158,11,.12);
  --danger:        #f87171;
  --danger-soft:   rgba(248,113,113,.12);
  --radius:        14px;
  --radius-sm:     9px;
  --shadow:        0 10px 30px -12px rgba(0,0,0,.55);
  --max:           1120px;
  font-size: 16px;
}

*{ box-sizing:border-box; }
html,body{ margin:0; padding:0; }
body{
  background: radial-gradient(1200px 600px at 15% -10%, #142138 0%, var(--bg) 55%) fixed;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}
a{ color: var(--accent); text-decoration:none; }
a:hover{ text-decoration:underline; }
img{ max-width:100%; display:block; }
h1,h2,h3,h4{ line-height:1.2; margin: 0 0 .5em; font-weight: 700; }
p{ margin: 0 0 1em; color: var(--text-dim); }
.container{ max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* =========================================================================
   Header / Nav
   ========================================================================= */
.site-header{
  position: sticky; top:0; z-index: 50;
  background: rgba(11,18,32,.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.site-header__inner{ display:flex; align-items:center; gap:20px; height:64px; }
.brand{ display:flex; align-items:center; gap:8px; font-weight:800; font-size:1.05rem; color:var(--text); }
.brand:hover{ text-decoration:none; }
.brand__mark{ font-size:1.3rem; }
.site-nav{ display:flex; gap:22px; margin-left:8px; }
.site-nav a{ color: var(--text-dim); font-weight:600; font-size:.94rem; }
.site-nav a:hover{ color: var(--text); text-decoration:none; }
.site-header__right{ margin-left:auto; display:flex; align-items:center; gap:10px; }

.pill{ display:inline-flex; align-items:center; gap:8px; background:var(--surface); border:1px solid var(--border);
  padding:7px 14px; border-radius:999px; font-size:.88rem; font-weight:600; color:var(--text); }
.pill:hover{ text-decoration:none; background:var(--surface-hover); }
.pill__dot{ width:8px; height:8px; border-radius:50%; background:var(--accent); box-shadow:0 0 0 3px var(--accent-soft); }

.nav-toggle{ display:none; flex-direction:column; justify-content:center; gap:4px; width:36px; height:36px;
  background:transparent; border:1px solid var(--border); border-radius:8px; cursor:pointer; }
.nav-toggle span{ display:block; height:2px; background:var(--text); border-radius:1px; margin:0 7px; }

@media (max-width: 780px){
  .site-nav{ position:absolute; top:64px; left:0; right:0; flex-direction:column; background:var(--bg-elevated);
    border-bottom:1px solid var(--border); padding:10px 20px 16px; gap:14px; display:none; }
  .site-nav.is-open{ display:flex; }
  .nav-toggle{ display:flex; }
}

/* =========================================================================
   Buttons / forms / alerts
   ========================================================================= */
.btn{ display:inline-flex; align-items:center; justify-content:center; gap:8px; border:1px solid transparent;
  border-radius: var(--radius-sm); padding: 12px 20px; font-weight:700; font-size:.95rem; cursor:pointer;
  transition: transform .06s ease, filter .15s ease, background .15s ease; }
.btn:hover{ text-decoration:none; filter:brightness(1.06); }
.btn:active{ transform: translateY(1px); }
.btn--primary{ background: linear-gradient(180deg, var(--accent), var(--accent-strong)); color:#04170f; }
.btn--ghost{ background: var(--surface); color: var(--text); border-color: var(--border); }
.btn--danger{ background: var(--danger-soft); color: var(--danger); border-color: rgba(248,113,113,.35); }
.btn--sm{ padding:8px 14px; font-size:.85rem; }
.btn--block{ width:100%; }
.btn[disabled]{ opacity:.5; cursor:not-allowed; }

.field{ margin-bottom: 18px; }
.field label{ display:block; font-weight:700; font-size:.88rem; margin-bottom:6px; color: var(--text); }
.field .hint{ font-size:.82rem; color: var(--text-faint); margin-top:6px; }
input[type="text"], input[type="password"], input[type="file"]{
  width:100%; background: var(--bg-elevated); border:1px solid var(--border); color: var(--text);
  border-radius: var(--radius-sm); padding: 12px 14px; font-size:.95rem; font-family: inherit;
}
input:focus{ outline: 2px solid var(--accent); outline-offset: 1px; }

.alert{ border-radius: var(--radius-sm); padding: 12px 16px; margin: 16px 0; font-size:.92rem; border:1px solid; }
.alert--error{ background: var(--danger-soft); border-color: rgba(248,113,113,.35); color:#ffd7d7; }
.alert--success{ background: var(--accent-soft); border-color: rgba(52,211,153,.35); color:#d6ffef; }

.badge{ display:inline-flex; align-items:center; gap:6px; padding:4px 10px; border-radius:999px; font-size:.78rem; font-weight:700; }
.badge--clean{ background: var(--accent-soft); color: var(--accent); }
.badge--flagged{ background: var(--warn-soft); color: var(--warn); }
.badge--expired{ background: var(--danger-soft); color: var(--danger); }
.badge--active{ background: var(--accent-soft); color: var(--accent); }

/* =========================================================================
   Hero + upload dropzone
   ========================================================================= */
.hero{ padding: 56px 0 28px; text-align:center; }
.hero h1{ font-size: clamp(1.8rem, 4vw, 2.6rem); }
.hero p.lead{ max-width: 620px; margin: 0 auto 8px; font-size:1.05rem; }
.hero-stats{ display:flex; justify-content:center; gap:28px; flex-wrap:wrap; margin-top: 22px; }
.hero-stat{ text-align:center; }
.hero-stat b{ display:block; font-size:1.6rem; color: var(--text); }
.hero-stat span{ font-size:.82rem; color: var(--text-faint); text-transform:uppercase; letter-spacing:.04em; }

.dropzone{
  max-width: 640px; margin: 32px auto 0; background: var(--surface); border: 1.5px dashed var(--border);
  border-radius: var(--radius); padding: 34px 24px; text-align:center; transition: border-color .15s, background .15s;
}
.dropzone.is-dragover{ border-color: var(--accent); background: var(--surface-hover); }
.dropzone__icon{ font-size: 2.2rem; margin-bottom: 8px; }
.dropzone__filename{ margin-top: 12px; font-weight:700; color: var(--accent); word-break: break-all; }
.dropzone input[type="file"]{ display:none; }
.dropzone .btn{ margin-top:14px; }

.upload-card{ max-width: 640px; margin: 24px auto 0; background: var(--surface); border:1px solid var(--border);
  border-radius: var(--radius); padding: 26px; }

.checkbox-row{ display:flex; align-items:flex-start; gap:10px; background: var(--bg-elevated); border:1px solid var(--border);
  border-radius: var(--radius-sm); padding: 14px; margin: 18px 0; }
.checkbox-row input{ margin-top:3px; width:18px; height:18px; accent-color: var(--accent); }
.checkbox-row .checkbox-row__text b{ display:block; color:var(--text); }
.checkbox-row .checkbox-row__text span{ font-size:.85rem; color:var(--text-faint); }

/* =========================================================================
   Sections / cards
   ========================================================================= */
.section{ padding: 44px 0; }
.section__head{ display:flex; align-items:baseline; justify-content:space-between; gap:16px; margin-bottom: 18px; flex-wrap:wrap; }
.section__head h2{ font-size:1.4rem; margin:0; }

.card{ background: var(--surface); border:1px solid var(--border); border-radius: var(--radius); padding: 22px; }
.card + .card{ margin-top: 16px; }

.detail-grid{ display:grid; grid-template-columns: repeat(2, 1fr); gap: 14px 24px; margin: 18px 0; }
.detail-grid .detail__label{ font-size:.78rem; text-transform:uppercase; letter-spacing:.04em; color: var(--text-faint); }
.detail-grid .detail__value{ font-weight:700; color: var(--text); word-break: break-word; }
@media (max-width: 560px){ .detail-grid{ grid-template-columns: 1fr; } }

.scan-checklist{ list-style:none; margin: 20px 0; padding:0; display:flex; flex-direction:column; gap:10px; }
.scan-checklist li{ display:flex; align-items:center; gap:12px; background: var(--bg-elevated); border:1px solid var(--border);
  border-radius: var(--radius-sm); padding: 12px 14px; opacity:0; transform: translateY(6px);
  animation: scanIn .35s ease forwards; }
.scan-checklist li .icn{ width:22px; height:22px; border-radius:50%; display:flex; align-items:center; justify-content:center;
  font-size:.8rem; flex-shrink:0; background: var(--border); }
.scan-checklist li.ok .icn{ background: var(--accent); color:#04170f; }
.scan-checklist li.warn .icn{ background: var(--warn); color:#221200; }
@keyframes scanIn{ to{ opacity:1; transform:none; } }

.expired-cta{ background: var(--danger-soft); border:1px solid rgba(248,113,113,.35); border-radius: var(--radius);
  padding: 18px 20px; margin: 18px 0; display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap; }
.expired-cta p{ margin:0; color:#ffd7d7; }

/* =========================================================================
   Community dashboard
   ========================================================================= */
.tabs{ display:flex; gap:8px; background: var(--surface); border:1px solid var(--border); border-radius:999px; padding:5px; width:fit-content; }
.tabs a{ padding:9px 18px; border-radius:999px; font-weight:700; font-size:.88rem; color: var(--text-dim); }
.tabs a:hover{ text-decoration:none; }
.tabs a.is-active{ background: var(--accent); color:#04170f; }

.stat-strip{ display:grid; grid-template-columns: repeat(4, 1fr); gap:14px; margin-bottom: 26px; }
.stat-strip .card{ text-align:center; padding: 18px; }
.stat-strip .card b{ display:block; font-size:1.5rem; }
.stat-strip .card span{ font-size:.78rem; color: var(--text-faint); text-transform:uppercase; letter-spacing:.03em; }
@media (max-width: 780px){ .stat-strip{ grid-template-columns: repeat(2,1fr); } }

.cert-grid{ display:grid; grid-template-columns: repeat(auto-fill, minmax(280px,1fr)); gap: 16px; }
.cert-card{ background: var(--surface); border:1px solid var(--border); border-radius: var(--radius); padding: 18px; display:flex; flex-direction:column; gap:10px; }
.cert-card__top{ display:flex; justify-content:space-between; align-items:flex-start; gap:8px; }
.cert-card__name{ font-weight:800; font-size:1.02rem; word-break:break-word; }
.cert-card__meta{ font-size:.82rem; color: var(--text-faint); }
.cert-card__owner{ font-size:.82rem; color: var(--text-dim); }
.cert-card__actions{ display:flex; gap:8px; margin-top:auto; }
.like-btn{ display:inline-flex; align-items:center; gap:6px; background: var(--bg-elevated); border:1px solid var(--border);
  color: var(--text); border-radius:999px; padding:8px 14px; font-weight:700; font-size:.85rem; cursor:pointer; }
.like-btn.is-liked{ background: var(--accent-soft); color: var(--accent); border-color: rgba(52,211,153,.4); }
.like-btn[disabled]{ opacity:.6; cursor:not-allowed; }

.empty-state{ text-align:center; padding: 46px 20px; color: var(--text-faint); }

/* =========================================================================
   Profile page
   ========================================================================= */
.profile-head{ display:flex; align-items:center; gap:16px; margin-bottom: 8px; flex-wrap:wrap; }
.profile-avatar{ width:56px; height:56px; border-radius:50%; background: linear-gradient(160deg, var(--accent), #0f6b4a);
  display:flex; align-items:center; justify-content:center; font-weight:800; font-size:1.3rem; color:#04170f; flex-shrink:0; }
.analytics-strip{ display:grid; grid-template-columns: repeat(3,1fr); gap:14px; margin: 20px 0 28px; }
@media (max-width: 620px){ .analytics-strip{ grid-template-columns: 1fr 1fr; } }

.own-cert-row{ display:flex; align-items:center; justify-content:space-between; gap:14px; padding: 14px 0; border-bottom:1px solid var(--border); flex-wrap:wrap; }
.own-cert-row:last-child{ border-bottom:none; }
.own-cert-row__main b{ display:block; }
.own-cert-row__main span{ font-size:.82rem; color: var(--text-faint); }
.own-cert-row__actions{ display:flex; gap:8px; align-items:center; }

/* =========================================================================
   Footer
   ========================================================================= */
.site-footer{ border-top:1px solid var(--border); margin-top: 40px; padding: 30px 0; }
.site-footer__disclaimer{ font-size:.82rem; color: var(--text-faint); max-width: 880px; margin-bottom: 16px; }
.site-footer__bottom{ font-size:.85rem; color: var(--text-faint); display:flex; gap:8px; flex-wrap:wrap; align-items:center; }
.site-footer__bottom .dot{ opacity:.5; }

.spinner{ width:16px; height:16px; border-radius:50%; border:2px solid rgba(255,255,255,.25); border-top-color: currentColor;
  animation: spin .7s linear infinite; display:inline-block; }
@keyframes spin{ to{ transform: rotate(360deg); } }

/* =========================================================================
   Login modal
   ========================================================================= */
.modal-overlay{ position:fixed; inset:0; background:rgba(4,8,18,.72); backdrop-filter: blur(3px);
  display:flex; align-items:center; justify-content:center; padding:20px; z-index:200; }
.modal-overlay[hidden]{ display:none; }
.modal{ position:relative; background: var(--bg-elevated); border:1px solid var(--border); border-radius: var(--radius);
  padding: 28px; max-width: 420px; width:100%; box-shadow: var(--shadow); }
.modal__close{ position:absolute; top:14px; right:14px; background:transparent; border:none; color: var(--text-faint);
  font-size:1.1rem; cursor:pointer; line-height:1; padding:4px; }
.modal__close:hover{ color: var(--text); }