:root {
  --paper: #0a0a0a;
  --ink: #ececec;
  --steel: #737373;
  --hair: #e4e2da;
  --hair-soft: #222;
  --raise: #111;
  --accent: #d4d4d4;
  --display: 'Archivo Expanded', sans-serif;
  --body: 'Inter', sans-serif;
  --mono: 'JetBrains Mono', monospace;
  --radius: 8px;
  --radius-lg: 14px;
  --green: #22c55e;
  --yellow: #eab308;
  --red: #ef4444;
}

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

html {
  scroll-behavior: smooth;
  background: var(--paper);
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.03;
  z-index: 999;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ============ NAV ============ */

.nav {
  position: sticky;
  top: 0;
  z-index: 500;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--hair-soft);
}

.nav-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--display);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 24px;
}

.nav-link {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--steel);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-link:hover,
.nav-link.active {
  color: var(--ink);
}

/* ============ HERO ============ */

.hero {
  position: relative;
  overflow: hidden;
  padding: 80px 0 60px;
  text-align: center;
  border-bottom: 1px solid var(--hair-soft);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(255,255,255,0.04) 0%, transparent 60%),
    linear-gradient(180deg, rgba(255,255,255,0.02) 0%, transparent 100%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 600px;
  margin: 0 auto;
  padding: 0 24px;
}

.hero-title {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(32px, 6vw, 56px);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1.1;
}

.hero-sub {
  margin-top: 16px;
  font-size: 15px;
  color: var(--steel);
  line-height: 1.6;
}

.credit-display {
  margin-top: 32px;
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
  background: var(--raise);
  border: 1px solid var(--hair-soft);
  border-radius: var(--radius-lg);
  padding: 20px 40px;
}

.credit-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--steel);
}

.credit-count {
  font-family: var(--display);
  font-weight: 800;
  font-size: 42px;
  color: var(--green);
  line-height: 1;
}

/* ============ BUTTONS ============ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 100px;
  border: none;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(.2,.8,.2,1);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--ink);
  color: var(--paper);
}

.btn-primary:hover {
  background: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255,255,255,0.1);
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--hair-soft);
}

.btn-ghost:hover {
  border-color: var(--ink);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 14px;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 11px;
}

.fx {
  transition: all 0.25s cubic-bezier(.2,.8,.2,1);
}
.fx:active { transform: scale(0.97); }

/* ============ GEN SECTION ============ */

.gen-section {
  padding: 48px 0 80px;
}

.gen-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.gen-output {
  margin-top: 40px;
  background: var(--raise);
  border: 1px solid var(--hair-soft);
  border-radius: var(--radius-lg);
  padding: 32px;
  max-width: 420px;
  margin-left: auto;
  margin-right: auto;
}

.gen-output-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.gen-output-tag {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--green);
  background: rgba(34,197,94,0.1);
  border: 1px solid rgba(34,197,94,0.2);
  padding: 4px 12px;
  border-radius: 100px;
}

.gen-copy-all {
  background: transparent;
  border: 1px solid var(--hair-soft);
  color: var(--steel);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  padding: 6px 14px;
  border-radius: 100px;
  cursor: pointer;
  transition: all 0.2s;
}

.gen-copy-all:hover {
  border-color: var(--ink);
  color: var(--ink);
}

.gen-avatar-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 24px;
}

.gen-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  border: 2px solid var(--hair-soft);
  object-fit: cover;
}

.gen-combo {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.gen-field {
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--hair-soft);
  border-radius: var(--radius);
  padding: 14px 16px;
}

.gen-field-label {
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--steel);
  margin-bottom: 6px;
}

.gen-field-value {
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
  word-break: break-all;
}

.gen-empty {
  margin-top: 40px;
  text-align: center;
  color: var(--steel);
  font-size: 14px;
  line-height: 1.7;
}

.gen-empty-sub {
  margin-top: 4px;
  font-size: 12px;
  color: #555;
}

/* ============ MODALS ============ */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.8);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.modal-panel {
  background: var(--raise);
  border: 1px solid var(--hair-soft);
  border-radius: var(--radius-lg);
  padding: 32px;
  max-width: 440px;
  width: 100%;
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-panel-wide {
  max-width: 560px;
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: transparent;
  border: none;
  color: var(--steel);
  font-size: 24px;
  cursor: pointer;
  transition: color 0.2s;
  line-height: 1;
}

.modal-close:hover { color: var(--ink); }

.modal-title {
  font-family: var(--display);
  font-weight: 800;
  font-size: 22px;
  letter-spacing: 0.04em;
  margin-bottom: 12px;
}

.modal-desc {
  font-size: 14px;
  color: var(--steel);
  margin-bottom: 24px;
  line-height: 1.6;
}

/* ============ PAYMENT ============ */

.payment-box {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.payment-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--steel);
  display: block;
  margin-bottom: 6px;
}

.payment-amount {
  font-family: var(--display);
  font-weight: 800;
  font-size: 20px;
  color: var(--yellow);
  display: block;
  margin-bottom: 8px;
}

.payment-address-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,0,0,0.4);
  border: 1px solid var(--hair-soft);
  border-radius: var(--radius);
  padding: 10px 14px;
  margin-bottom: 20px;
}

.payment-address {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink);
  word-break: break-all;
  flex: 1;
}

.payment-copy {
  background: transparent;
  border: 1px solid var(--hair-soft);
  color: var(--steel);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  padding: 6px 12px;
  border-radius: 100px;
  cursor: pointer;
  flex-shrink: 0;
  transition: all 0.2s;
}

.payment-copy:hover {
  border-color: var(--ink);
  color: var(--ink);
}

.payment-qty {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-bottom: 16px;
}

.qty-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--hair-soft);
  background: transparent;
  color: var(--ink);
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.qty-btn:hover {
  border-color: var(--ink);
  background: rgba(255,255,255,0.05);
}

.qty-display {
  font-family: var(--display);
  font-weight: 800;
  font-size: 28px;
  min-width: 40px;
  text-align: center;
}

.payment-total {
  text-align: center;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--steel);
  margin-bottom: 20px;
}

.payment-total strong {
  color: var(--yellow);
}

.payment-verify {
  display: flex;
  gap: 8px;
  margin-top: 4px;
}

.payment-input {
  flex: 1;
  background: rgba(0,0,0,0.4);
  border: 1px solid var(--hair-soft);
  border-radius: var(--radius);
  padding: 10px 14px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink);
  outline: none;
  transition: border-color 0.2s;
}

.payment-input:focus {
  border-color: var(--ink);
}

.payment-input::placeholder {
  color: #444;
}

.payment-note {
  margin-top: 12px;
  font-size: 12px;
  color: var(--steel);
  text-align: center;
}

.payment-note.success { color: var(--green); }
.payment-note.error { color: var(--red); }

/* ============ ADMIN ============ */

.admin-fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--raise);
  border: 1px solid var(--hair-soft);
  color: var(--steel);
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 800;
  transition: all 0.2s;
}

.admin-fab:hover {
  border-color: var(--ink);
  color: var(--ink);
}

.admin-login {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}

.admin-content {
  margin-top: 20px;
}

.admin-stats {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}

.admin-stat {
  flex: 1;
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--hair-soft);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
}

.admin-stat-num {
  font-family: var(--display);
  font-weight: 800;
  font-size: 28px;
  display: block;
}

.admin-stat-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--steel);
  display: block;
  margin-top: 4px;
}

.admin-section {
  margin-bottom: 24px;
}

.admin-section h3 {
  font-family: var(--display);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.admin-hint {
  font-size: 12px;
  color: var(--steel);
  margin-bottom: 8px;
}

.admin-textarea {
  width: 100%;
  min-height: 100px;
  background: rgba(0,0,0,0.4);
  border: 1px solid var(--hair-soft);
  border-radius: var(--radius);
  padding: 12px 14px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink);
  outline: none;
  resize: vertical;
  margin-bottom: 8px;
}

.admin-textarea:focus {
  border-color: var(--ink);
}

.admin-textarea::placeholder {
  color: #444;
}

.admin-lookup-row {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
}

.admin-purchases {
  max-height: 200px;
  overflow-y: auto;
}

.admin-empty {
  font-size: 13px;
  color: var(--steel);
}

.admin-purchase-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--hair-soft);
  border-radius: var(--radius);
  padding: 10px 14px;
  margin-bottom: 8px;
}

.admin-purchase-info {
  font-family: var(--mono);
  font-size: 12px;
}

.admin-purchase-info span {
  color: var(--steel);
}

.admin-lookup-result {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--steel);
  margin-top: 8px;
}

/* ============ RESPONSIVE ============ */

@media (max-width: 600px) {
  .gen-actions { flex-direction: column; align-items: stretch; }
  .admin-stats { flex-direction: column; }
  .payment-verify { flex-direction: column; }
  .admin-lookup-row { flex-direction: column; }
}