/* ═══════════════════════════════════════════════
   DIDChain — Dark Cyber / Industrial Theme
   ═══════════════════════════════════════════════ */

:root {
  --bg:       #080c10;
  --surface:  #0e141c;
  --surface2: #141c28;
  --border:   #1e2d42;
  --accent:   #00e5ff;
  --accent2:  #7b4fff;
  --green:    #00ff88;
  --red:      #ff4466;
  --yellow:   #ffd700;
  --text:     #c8d8e8;
  --text-dim: #5a7a9a;
  --font-display: 'Syne', sans-serif;
  --font-mono:    'Space Mono', monospace;
  --radius: 12px;
  --glow: 0 0 24px rgba(0,229,255,0.15);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-display);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── Background effects ── */
.bg-grid {
  position: fixed; inset: 0; z-index: 0;
  background-image:
    linear-gradient(rgba(0,229,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,229,255,0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}
.bg-glow {
  position: fixed; top: -20vh; left: 50%; transform: translateX(-50%);
  width: 80vw; height: 60vh;
  background: radial-gradient(ellipse, rgba(123,79,255,0.12) 0%, transparent 70%);
  pointer-events: none; z-index: 0;
}

/* ── Header ── */
.header {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; gap: 1.5rem;
  padding: 1rem 2rem;
  background: rgba(8,12,16,0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.logo { display: flex; align-items: center; gap: .6rem; font-family: var(--font-mono); font-size: 1.2rem; font-weight: 700; }
.logo-icon { font-size: 1.5rem; color: var(--accent); }
.logo .accent { color: var(--accent); }

.nav-pills { display: flex; gap: .5rem; margin-left: auto; }
.pill {
  font-family: var(--font-mono); font-size: .75rem;
  padding: .35rem .9rem; border-radius: 99px;
  border: 1px solid var(--border);
  color: var(--text-dim); text-decoration: none;
  transition: all .2s;
}
.pill:hover, .pill.active {
  border-color: var(--accent); color: var(--accent);
  background: rgba(0,229,255,0.07);
}

.btn-connect {
  display: flex; align-items: center; gap: .5rem;
  font-family: var(--font-mono); font-size: .8rem;
  padding: .5rem 1.2rem; border-radius: 99px;
  background: var(--surface2); border: 1px solid var(--border);
  color: var(--text); cursor: pointer; transition: all .2s;
}
.btn-connect:hover { border-color: var(--accent); color: var(--accent); }
.btn-connect.connected { border-color: var(--green); color: var(--green); }
.dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--text-dim);
  transition: background .3s;
}
.btn-connect.connected .dot { background: var(--green); box-shadow: 0 0 8px var(--green); }

/* ── Hero ── */
.hero {
  position: relative; z-index: 1;
  text-align: center;
  padding: 5rem 2rem 3rem;
}
.hero-badge {
  display: inline-block;
  font-family: var(--font-mono); font-size: .72rem;
  padding: .3rem 1rem; border-radius: 99px;
  border: 1px solid var(--accent2);
  color: var(--accent2); margin-bottom: 1.5rem;
  letter-spacing: .05em;
}
.hero-title {
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 800; line-height: 1.1;
  letter-spacing: -.02em;
  color: #fff;
  margin-bottom: 1.2rem;
}
.hero-title em { font-style: italic; color: var(--accent); }

.hero-sub {
  font-size: 1rem; line-height: 1.7;
  color: var(--text-dim); max-width: 480px; margin: 0 auto 2.5rem;
}

.hero-stats {
  display: flex; justify-content: center; gap: 3rem;
}
.stat { display: flex; flex-direction: column; align-items: center; gap: .3rem; }
.stat span {
  font-family: var(--font-mono); font-size: 1.6rem; font-weight: 700; color: var(--accent);
}
.stat label { font-size: .72rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: .1em; }

/* ── Wallet Banner ── */
.wallet-banner {
  position: relative; z-index: 1;
  display: flex; align-items: center; justify-content: space-between;
  margin: 0 2rem 1rem;
  padding: .8rem 1.4rem; border-radius: var(--radius);
  background: rgba(0,255,136,0.06); border: 1px solid rgba(0,255,136,0.2);
}
.wallet-info { display: flex; align-items: center; gap: .7rem; font-family: var(--font-mono); font-size: .85rem; }
.wallet-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 8px var(--green); }
.wallet-status { font-size: .8rem; color: var(--text-dim); }

/* ── Main Grid ── */
.main-grid {
  position: relative; z-index: 1;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.5rem;
  padding: 1rem 2rem 4rem;
  max-width: 1300px; margin: 0 auto;
}

/* ── Cards ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.8rem;
  transition: border-color .3s;
}
.card:hover { border-color: rgba(0,229,255,0.3); }

.card-header {
  display: flex; align-items: center; gap: .8rem;
  margin-bottom: 1.6rem;
}
.card-icon { font-size: 1.4rem; }
.card-header h2 {
  font-size: 1.1rem; font-weight: 700; color: #fff;
}

.card--register { grid-column: span 1; }
.card--lookup   { grid-column: span 1; }
.card--zkp      { grid-column: span 1; }
.card--arch     { grid-column: span 1; }

.card--dashboard { 
  grid-column: 1 / -1; 
  background: linear-gradient(135deg, var(--surface) 0%, rgba(14,20,28,0.7) 100%);
  border-color: rgba(0,229,255,0.2);
}
.card--events {
  grid-column: 1 / -1;
}

/* ── Dashboard Specifics ── */
.dashboard-header { justify-content: space-between; flex-wrap: wrap; }
.id-badge {
  font-family: var(--font-mono); font-size: .75rem; font-weight: 600;
  padding: .3rem .8rem; border-radius: 99px; text-transform: uppercase;
}
.id-badge.status-active { background: rgba(0,255,136,0.15); color: var(--green); border: 1px solid rgba(0,255,136,0.3); }
.id-badge.status-revoked { background: rgba(255,68,102,0.15); color: var(--red); border: 1px solid rgba(255,68,102,0.3); }
.id-badge.status-none { background: rgba(255,215,0,0.15); color: var(--yellow); border: 1px solid rgba(255,215,0,0.3); }

.id-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.2rem; margin-top: .5rem;
}
.id-field {
  display: flex; flex-direction: column; gap: .3rem;
  padding: .8rem 1.2rem; background: var(--surface2);
  border-radius: 8px; border: 1px solid var(--border);
}
.id-field.full-width { grid-column: 1 / -1; }
.id-field span { font-size: .65rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: .1em; }
.id-field strong, .id-field code { font-family: var(--font-mono); font-size: .9rem; color: var(--text); }
.id-field code.copyable { color: var(--accent); word-break: break-all; cursor: text; user-select: all; }
.id-field strong.empty { color: var(--text-dim); font-style: italic; }

.dashboard-actions {
  display: flex; gap: 1rem; margin-top: 1.5rem; flex-wrap: wrap;
}
.dashboard-actions button { margin-top: 0; width: auto; flex: 1; min-width: 200px; }

/* ── Forms ── */
.form-group { margin-bottom: 1rem; }
.form-group label {
  display: block; font-size: .75rem; font-weight: 600;
  color: var(--text-dim); text-transform: uppercase; letter-spacing: .06em;
  margin-bottom: .4rem;
}
.form-group input {
  width: 100%; padding: .7rem 1rem;
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: 8px; color: var(--text);
  font-family: var(--font-mono); font-size: .85rem;
  outline: none; transition: border-color .2s, box-shadow .2s;
}
.form-group input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,229,255,0.1);
}
.form-group input::placeholder { color: var(--text-dim); }

/* advanced details */
.advanced {
  margin: 1rem 0;
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: 8px; padding: .8rem 1rem;
}
.advanced summary {
  font-size: .78rem; color: var(--text-dim); cursor: pointer;
  font-family: var(--font-mono);
}
.advanced .form-group { margin-top: .8rem; }
.help-text { font-size: .76rem; color: var(--text-dim); line-height: 1.5; margin-top: .5rem; }
.help-text a { color: var(--accent); }

/* ── Buttons ── */
.btn-primary, .btn-secondary {
  width: 100%; padding: .85rem;
  border-radius: 8px; font-family: var(--font-mono);
  font-size: .9rem; font-weight: 700;
  cursor: pointer; border: none;
  display: flex; align-items: center; justify-content: center; gap: .5rem;
  transition: all .2s;
  margin-top: 1rem;
}
.btn-primary {
  background: var(--accent); color: var(--bg);
}
.btn-primary:hover:not(:disabled) {
  background: #fff; box-shadow: 0 0 20px rgba(0,229,255,0.4);
}
.btn-primary:disabled {
  background: var(--surface2); color: var(--text-dim);
  border: 1px solid var(--border); cursor: not-allowed;
}
.btn-secondary {
  background: transparent; color: var(--accent);
  border: 1px solid var(--accent);
}
.btn-secondary:hover:not(:disabled) {
  background: rgba(0,229,255,0.1);
}
.btn-secondary:disabled {
  color: var(--text-dim); border-color: var(--border); cursor: not-allowed;
}

.btn-danger {
  background: rgba(255,68,102,0.1); color: var(--red);
  border: 1px solid rgba(255,68,102,0.3);
}
.btn-danger:hover:not(:disabled) {
  background: rgba(255,68,102,0.2); box-shadow: 0 0 15px rgba(255,68,102,0.3);
}
.btn-danger:disabled {
  background: transparent; color: var(--text-dim); border-color: var(--border); cursor: not-allowed;
}

.btn-loading {
  position: relative; color: transparent !important; pointer-events: none;
}
.btn-loading::after {
  content: '⟳'; position: absolute; left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  color: #fff; font-size: 1.2rem;
  animation: spin 1s linear infinite;
}

@keyframes spin { 100% { transform: translate(-50%, -50%) rotate(360deg); } }

/* ── Status / Result ── */
.status-box {
  margin-top: 1rem; padding: 1rem;
  border-radius: 8px; font-family: var(--font-mono); font-size: .8rem;
  line-height: 1.6; word-break: break-all;
}
.status-box.success { background: rgba(0,255,136,0.08); border: 1px solid rgba(0,255,136,0.3); color: var(--green); }
.status-box.error   { background: rgba(255,68,102,0.08); border: 1px solid rgba(255,68,102,0.3); color: var(--red); }
.status-box.loading { background: rgba(0,229,255,0.08); border: 1px solid rgba(0,229,255,0.3); color: var(--accent); }

.result-card {
  margin-top: 1.2rem; border: 1px solid var(--border);
  border-radius: 8px; overflow: hidden;
}
.result-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: .6rem 1rem; font-family: var(--font-mono); font-size: .78rem;
  border-bottom: 1px solid var(--border);
}
.result-row:last-child { border-bottom: none; }
.result-row span:first-child { color: var(--text-dim); }
.result-row code {
  max-width: 200px; overflow: hidden; text-overflow: ellipsis;
  white-space: nowrap; color: var(--accent);
}

/* ── Event Feed ── */
.event-feed {
  max-height: 280px; overflow-y: auto; padding-right: .5rem;
  display: flex; flex-direction: column; gap: .8rem;
}
.event-item {
  display: flex; gap: 1rem; align-items: flex-start;
  padding: 1rem; background: var(--surface2);
  border-radius: 8px; border-left: 3px solid var(--accent);
  font-family: var(--font-mono); font-size: .8rem;
  animation: slideIn 0.3s ease-out forwards;
}
@keyframes slideIn { from { opacity: 0; transform: translateX(-10px); } to { opacity: 1; transform: translateX(0); } }
.event-item.revoked { border-left-color: var(--red); }
.event-item-icon { font-size: 1.2rem; margin-top: .1rem; }
.event-item-content { flex: 1; }
.event-item-title { font-weight: 700; color: #fff; margin-bottom: .3rem; display: block; }
.event-item-meta { color: var(--text-dim); font-size: .7rem; display: flex; justify-content: space-between; margin-top: .5rem; }
.event-item-meta a { color: var(--accent); text-decoration: none; }
.event-item-meta a:hover { text-decoration: underline; }
.event-empty { color: var(--text-dim); font-size: .8rem; font-style: italic; text-align: center; padding: 2rem 0; }

/* ── ZKP ── */
.zkp-demo {
  display: flex; align-items: center; gap: .8rem;
  margin: 1.2rem 0; flex-wrap: wrap;
}
.zkp-claim, .zkp-proof, .zkp-verify {
  flex: 1; min-width: 100px;
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: 8px; padding: .8rem; text-align: center;
}
.zkp-label {
  display: block; font-size: .65rem; text-transform: uppercase;
  letter-spacing: .08em; color: var(--text-dim); margin-bottom: .4rem;
}
.zkp-claim span:last-child, .zkp-verify span:last-child {
  font-size: .82rem; color: var(--text);
}
.zkp-proof code { font-size: .78rem; color: var(--accent2); }
.zkp-arrow { color: var(--accent); font-size: 1.2rem; flex-shrink: 0; }
.verified-badge {
  display: inline-block; background: rgba(0,255,136,0.15);
  color: var(--green); border-radius: 4px; padding: .1rem .5rem;
  font-size: .8rem; font-family: var(--font-mono);
}
.card-desc { font-size: .9rem; color: var(--text-dim); margin-bottom: 1rem; line-height: 1.6; }

/* ── Architecture ── */
.arch-flow {
  display: flex; align-items: center; gap: .5rem; flex-wrap: wrap;
}
.arch-node {
  display: flex; flex-direction: column; align-items: center; gap: .3rem;
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: 8px; padding: .7rem 1rem;
  flex: 1; min-width: 80px;
}
.arch-icon { font-size: 1.3rem; }
.arch-node span { font-size: .72rem; color: var(--text-dim); white-space: nowrap; }
.arch-line {
  display: flex; flex-direction: column; align-items: center; gap: .2rem;
  color: var(--accent); font-size: .65rem;
  font-family: var(--font-mono); white-space: nowrap;
  flex-shrink: 0;
}
.arch-line::before { content: '→'; font-size: 1.1rem; }

.key-benefits {
  display: flex; flex-direction: column; gap: .6rem; margin-top: 1.4rem;
}
.benefit {
  display: flex; align-items: flex-start; gap: .8rem;
  padding: .7rem; background: var(--surface2); border-radius: 8px;
  font-size: .85rem;
}
.benefit span { font-size: 1.1rem; flex-shrink: 0; }
.benefit strong { display: block; color: #fff; margin-bottom: .1rem; }
.benefit p { color: var(--text-dim); font-size: .78rem; }

/* ── Toast ── */
.toast {
  position: fixed; bottom: 2rem; right: 2rem; z-index: 999;
  font-family: var(--font-mono); font-size: .82rem;
  padding: .9rem 1.4rem; border-radius: 8px;
  background: var(--surface2); border: 1px solid var(--accent);
  color: var(--accent); max-width: 340px;
  transform: translateY(20px); opacity: 0;
  transition: all .3s;
  pointer-events: none;
}
.toast.show { transform: translateY(0); opacity: 1; }

/* ── Utilities ── */
.hidden { display: none !important; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ── Responsive ── */
@media (max-width: 700px) {
  .header { flex-wrap: wrap; gap: .8rem; }
  .nav-pills { order: 3; width: 100%; justify-content: center; }
  .hero-stats { gap: 1.5rem; }
  .main-grid { padding: 1rem; }
  .zkp-demo { flex-direction: column; }
  .arch-flow { flex-direction: column; }
}
/* ── Skeleton Loaders ── */
.skeleton {
  background: var(--surface2);
  background-image: linear-gradient(
    90deg, 
    rgba(255, 255, 255, 0) 0, 
    rgba(255, 255, 255, 0.05) 20%, 
    rgba(255, 255, 255, 0.08) 60%, 
    rgba(255, 255, 255, 0)
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 4px;
  display: none; /* Hide by default */
}

@keyframes shimmer {
  100% { background-position: -200% 0; }
}

.skeleton-text {
  height: 1.2rem;
  width: 100%;
  margin: 0.2rem 0;
}

.skeleton-stat {
  height: 2rem;
  width: 60px;
}

.skeleton-badge {
  height: 1.5rem;
  width: 100px;
  border-radius: 99px;
}

/* Hide content when loading */
.loading-data > * { visibility: hidden !important; }
.loading-data .skeleton { display: block !important; visibility: visible !important; position: absolute; inset: 0; }
.id-field.loading-data { position: relative; }

/* ── System Booting Splash ── */
#systemSplash {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 10000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  transition: opacity 0.8s ease, visibility 0.8s;
}

#systemSplash.fade-out {
  opacity: 0;
  visibility: hidden;
}

.splash-logo {
  font-size: 4rem;
  color: var(--accent);
  filter: drop-shadow(0 0 20px rgba(0,229,255,0.4));
  animation: pulseLogo 2s infinite ease-in-out;
}

@keyframes pulseLogo {
  0%, 100% { transform: scale(1); opacity: 0.8; }
  50% { transform: scale(1.1); opacity: 1; }
}

.boot-text {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-dim);
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.boot-status {
  color: var(--accent);
  font-weight: bold;
}

.boot-progress {
  width: 240px;
  height: 4px;
  background: var(--surface2);
  border-radius: 99px;
  overflow: hidden;
  position: relative;
}

.boot-bar {
  position: absolute;
  height: 100%;
  width: 40%;
  background: var(--accent);
  box-shadow: 0 0 15px var(--accent);
  border-radius: 99px;
  animation: bootSlide 2s infinite linear;
}

@keyframes bootSlide {
  0% { left: -40%; }
  100% { left: 100%; }
}