/* ─── Reset & Custom Properties ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-900: #020817;
  --bg-800: #0d1626;
  --bg-700: #111827;
  --bg-600: #1e293b;
  --bg-500: #273548;
  --border: #1e3a5f;
  --text-100: #e2e8f0;
  --text-200: #94a3b8;
  --text-300: #64748b;
  --accent:  #3b82f6;
  --accent-hover: #2563eb;
  --green: #22c55e;
  --red:   #ef4444;
  --yellow: #f59e0b;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 32px rgba(0,0,0,.45);
  --transition: .18s ease;
  --font: 'Inter', 'Segoe UI', system-ui, sans-serif;
}

html { scroll-behavior: smooth; }
body {
  background: var(--bg-900);
  color: var(--text-100);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

img { display: block; max-width: 100%; }

.hidden { display: none !important; }
.muted { color: var(--text-200); font-size: .85em; }
.mt-2 { margin-top: .5rem; }

/* ─── Scrollbar ───────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-800); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ─── Stars Background ────────────────────────────────────────────────────── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(59,130,246,.15) 0%, transparent 60%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='400' height='400'%3E%3Ccircle cx='50' cy='80' r='.8' fill='%23fff' opacity='.6'/%3E%3Ccircle cx='150' cy='30' r='1' fill='%23fff' opacity='.5'/%3E%3Ccircle cx='300' cy='120' r='.6' fill='%23fff' opacity='.7'/%3E%3Ccircle cx='370' cy='60' r='.9' fill='%23fff' opacity='.4'/%3E%3Ccircle cx='80' cy='200' r='.7' fill='%23fff' opacity='.6'/%3E%3Ccircle cx='220' cy='250' r='1.1' fill='%23fff' opacity='.5'/%3E%3Ccircle cx='330' cy='310' r='.6' fill='%23fff' opacity='.8'/%3E%3Ccircle cx='120' cy='350' r='.8' fill='%23fff' opacity='.4'/%3E%3Ccircle cx='280' cy='380' r='1' fill='%23fff' opacity='.6'/%3E%3Ccircle cx='400' cy='220' r='.7' fill='%23fff' opacity='.5'/%3E%3C/svg%3E") repeat;
  pointer-events: none;
  z-index: 0;
}

/* ─── Layout ──────────────────────────────────────────────────────────────── */
#app { position: relative; z-index: 1; display: flex; flex-direction: column; min-height: 100vh; }

/* ─── Navbar ──────────────────────────────────────────────────────────────── */
#nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: .75rem 2rem;
  background: rgba(13,22,38,.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  flex-wrap: wrap;
}

.nav-brand {
  font-size: 1.2rem;
  font-weight: 700;
  background: linear-gradient(135deg, #60a5fa, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}

.nav-links { display: flex; gap: .5rem; flex: 1; }

.nav-link {
  padding: .4rem .85rem;
  border-radius: 20px;
  color: var(--text-200);
  font-size: .9rem;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  background: none;
  font-family: inherit;
}
.nav-link:hover { color: var(--text-100); background: var(--bg-600); }
.nav-link.active { color: var(--accent); background: rgba(59,130,246,.15); }

.nav-right { display: flex; align-items: center; gap: .5rem; margin-left: auto; }

#wallet-badge {
  font-size: .75rem;
  padding: .2rem .6rem;
  background: rgba(59,130,246,.15);
  border: 1px solid rgba(59,130,246,.3);
  border-radius: 20px;
  color: var(--accent);
}

/* ─── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .6rem 1.3rem;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-family: inherit;
}
.btn:disabled { opacity: .5; cursor: not-allowed; }

.btn-primary  { background: var(--accent); color: #fff; }
.btn-primary:hover:not(:disabled)  { background: var(--accent-hover); }

.btn-success  { background: var(--green); color: #fff; }
.btn-success:hover:not(:disabled)  { filter: brightness(1.1); }

.btn-danger   { background: var(--red); color: #fff; }
.btn-danger:hover:not(:disabled)   { filter: brightness(1.1); }

.btn-ghost    { background: var(--bg-600); color: var(--text-100); border: 1px solid var(--border); }
.btn-ghost:hover:not(:disabled)    { background: var(--bg-500); }

.btn-outline  { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
.btn-outline:hover:not(:disabled)  { background: rgba(59,130,246,.1); }

.btn-wallet   { background: rgba(59,130,246,.15); color: var(--accent); border: 1px solid rgba(59,130,246,.3); }
.btn-wallet:hover:not(:disabled)   { background: rgba(59,130,246,.25); }
.btn-wallet.connected { color: var(--green); border-color: rgba(34,197,94,.4); background: rgba(34,197,94,.1); }

.btn-sm { padding: .3rem .7rem; font-size: .82rem; border-radius: 6px; font-weight: 600; cursor: pointer; border: none; transition: var(--transition); font-family: inherit; }

/* ─── Hero ────────────────────────────────────────────────────────────────── */
.hero {
  text-align: center;
  padding: 5rem 2rem 3.5rem;
  background: radial-gradient(ellipse 90% 80% at 50% 0%, rgba(59,130,246,.1) 0%, transparent 65%);
}

.hero-tag {
  display: inline-block;
  padding: .25rem .8rem;
  border: 1px solid rgba(59,130,246,.4);
  border-radius: 20px;
  font-size: .8rem;
  color: var(--accent);
  margin-bottom: 1.5rem;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #e2e8f0 30%, #60a5fa 70%, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  max-width: 600px;
  margin: 0 auto 2rem;
  color: var(--text-200);
  font-size: 1.1rem;
}

.hero-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

.stats-bar {
  display: flex;
  gap: 2rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.stat-item { text-align: center; }
.stat-value { font-size: 1.6rem; font-weight: 700; color: var(--text-100); }
.stat-label { font-size: .8rem; color: var(--text-300); text-transform: uppercase; letter-spacing: .05em; }

/* ─── Section Container ──────────────────────────────────────────────────── */
.section {
  max-width: 1280px;
  margin: 0 auto;
  padding: 2.5rem 2rem;
  width: 100%;
}

.section-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.section-header h2 {
  font-size: 1.4rem;
  font-weight: 700;
  flex: 1;
}

/* ─── Category Chips ──────────────────────────────────────────────────────── */
#category-chips { display: flex; gap: .5rem; flex-wrap: wrap; margin-bottom: 1.5rem; }

.chip {
  padding: .3rem .85rem;
  border-radius: 20px;
  font-size: .83rem;
  border: 1px solid var(--border);
  background: var(--bg-700);
  color: var(--text-200);
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}
.chip:hover { border-color: var(--accent); color: var(--accent); }
.chip.active { background: rgba(59,130,246,.2); border-color: var(--accent); color: var(--accent); }

/* ─── Resource Cards Grid ────────────────────────────────────────────────── */
#market-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 1.2rem;
}

.resource-card {
  background: var(--bg-800);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.3rem;
  transition: var(--transition);
  cursor: default;
}
.resource-card:hover {
  border-color: rgba(59,130,246,.5);
  box-shadow: 0 0 0 1px rgba(59,130,246,.15), var(--shadow);
  transform: translateY(-2px);
}

.rc-header { display: flex; align-items: flex-start; gap: .75rem; margin-bottom: .75rem; }
.rc-icon { font-size: 1.6rem; flex-shrink: 0; }
.rc-name { font-weight: 600; font-size: 1rem; line-height: 1.2; }
.rc-symbol { font-size: .78rem; color: var(--text-300); font-family: monospace; }
.rc-badge {
  margin-left: auto;
  flex-shrink: 0;
  padding: .15rem .55rem;
  border-radius: 20px;
  font-size: .72rem;
  font-weight: 600;
  color: var(--badge-color, var(--accent));
  border: 1px solid var(--badge-color, var(--accent));
  background: color-mix(in srgb, var(--badge-color, var(--accent)) 15%, transparent);
  white-space: nowrap;
}

.rc-price { font-size: 1.4rem; font-weight: 700; margin-bottom: .2rem; }
.rc-unit { font-size: .75rem; color: var(--text-300); font-weight: 400; }
.rc-change { font-size: .85rem; font-weight: 600; margin-bottom: .6rem; }
.rc-change.up { color: var(--green); }
.rc-change.down { color: var(--red); }
.rc-desc { font-size: .82rem; color: var(--text-200); margin-bottom: .5rem; line-height: 1.45; }
.rc-vol { font-size: .78rem; color: var(--text-300); }

/* ─── Contracts Table ─────────────────────────────────────────────────────── */
.filter-row { display: flex; gap: .75rem; margin-bottom: 1rem; flex-wrap: wrap; }

.filter-row select {
  padding: .4rem .8rem;
  background: var(--bg-700);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-100);
  font-family: inherit;
  font-size: .88rem;
  cursor: pointer;
}

.table-wrapper { overflow-x: auto; }

.contracts-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .88rem;
}

.contracts-table thead th {
  padding: .6rem 1rem;
  text-align: left;
  background: var(--bg-700);
  color: var(--text-300);
  font-size: .78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .04em;
  border-bottom: 1px solid var(--border);
}

.contracts-table tbody tr {
  border-bottom: 1px solid rgba(30,58,95,.4);
  transition: background var(--transition);
}
.contracts-table tbody tr:hover { background: var(--bg-700); }

.contracts-table td { padding: .65rem 1rem; vertical-align: middle; }

.empty-row { text-align: center; color: var(--text-300); padding: 2rem !important; }

.badge-resource {
  display: inline-block;
  padding: .2rem .55rem;
  border-radius: 6px;
  font-size: .78rem;
  font-weight: 700;
  font-family: monospace;
  color: var(--badge-color, var(--accent));
  background: color-mix(in srgb, var(--badge-color, var(--accent)) 15%, transparent);
}

.badge-type {
  display: inline-block;
  padding: .15rem .55rem;
  border-radius: 4px;
  font-size: .78rem;
  font-weight: 700;
  font-family: monospace;
}
.badge-type.call { background: rgba(34,197,94,.15); color: var(--green); }
.badge-type.put  { background: rgba(239,68,68,.15);  color: var(--red); }

.status-open      { color: var(--green); font-weight: 600; }
.status-filled    { color: var(--accent); }
.status-cancelled { color: var(--text-300); text-decoration: line-through; }

/* ─── Write Contract Form ─────────────────────────────────────────────────── */
.form-card {
  background: var(--bg-800);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  max-width: 700px;
  margin: 0 auto;
}

.form-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 1.5rem; }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 540px) { .form-grid { grid-template-columns: 1fr; } }

.form-group { display: flex; flex-direction: column; gap: .35rem; }
.form-group.full { grid-column: 1 / -1; }

.form-group label { font-size: .82rem; font-weight: 600; color: var(--text-200); }

.form-group input,
.form-group select,
.form-group textarea {
  padding: .6rem .85rem;
  background: var(--bg-700);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-100);
  font-family: inherit;
  font-size: .92rem;
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(59,130,246,.15);
}

.form-group input::placeholder { color: var(--text-300); }

.spot-hint { font-size: .78rem; color: var(--text-300); margin-top: .15rem; }

.form-footer { margin-top: 1.5rem; display: flex; gap: 1rem; align-items: center; }

.disclaimer {
  background: rgba(245,158,11,.08);
  border: 1px solid rgba(245,158,11,.25);
  border-radius: var(--radius-sm);
  padding: .75rem 1rem;
  font-size: .8rem;
  color: #fbbf24;
  margin-top: 1rem;
}

/* ─── Portfolio ───────────────────────────────────────────────────────────── */
.portfolio-section { margin-bottom: 2rem; }
.portfolio-section h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: .75rem;
  color: var(--text-200);
  display: flex;
  align-items: center;
  gap: .5rem;
}
.portfolio-section h3::after { content: ''; flex: 1; height: 1px; background: var(--border); }

/* ─── Modals ──────────────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(2,8,23,.8);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 1rem;
}

.modal-box {
  background: var(--bg-800);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 100%;
  max-width: 540px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 1.5rem;
  border-bottom: 1px solid var(--border);
}

.modal-header h3 { font-size: 1.1rem; font-weight: 700; }

.modal-close-btn {
  background: none;
  border: none;
  color: var(--text-300);
  font-size: 1.3rem;
  cursor: pointer;
  padding: .1rem .4rem;
  border-radius: 4px;
}
.modal-close-btn:hover { background: var(--bg-600); color: var(--text-100); }

.modal-content { padding: 1.5rem; }

.modal-grid { display: flex; flex-direction: column; gap: .6rem; }

.modal-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: .45rem .5rem;
  border-radius: 6px;
  font-size: .88rem;
}
.modal-row:nth-child(even) { background: var(--bg-700); }
.modal-row span:first-child { color: var(--text-300); }

code { font-family: 'Courier New', monospace; font-size: .8em; color: var(--text-200); }
code.sig { word-break: break-all; }

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: .75rem;
}

/* ─── Payment Modal ───────────────────────────────────────────────────────── */
.pay-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.2rem;
}

.pay-tab {
  padding: .6rem 1.2rem;
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  background: none;
  color: var(--text-300);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  font-family: inherit;
  transition: var(--transition);
}
.pay-tab:hover { color: var(--text-100); }
.pay-tab.active { color: var(--accent); border-bottom-color: var(--accent); }

#pay-summary { margin-bottom: 1rem; font-size: .9rem; color: var(--text-200); }
#pay-summary strong { color: var(--text-100); }

.stripe-card-wrapper {
  background: var(--bg-700);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .75rem 1rem;
  margin-bottom: 1rem;
}

.crypto-info {
  background: var(--bg-700);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem;
  font-size: .85rem;
  color: var(--text-200);
  margin-bottom: 1rem;
  line-height: 1.6;
}
.crypto-info strong { color: var(--text-100); }

/* ─── Toast Notifications ─────────────────────────────────────────────────── */
#toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .5rem;
  z-index: 9999;
}

.toast {
  padding: .75rem 1.2rem;
  border-radius: var(--radius-sm);
  font-size: .88rem;
  font-weight: 500;
  max-width: 360px;
  background: var(--bg-600);
  border-left: 4px solid var(--accent);
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateX(20px);
  transition: all .3s ease;
}
.toast.show { opacity: 1; transform: translateX(0); }
.toast-success { border-left-color: var(--green); }
.toast-error   { border-left-color: var(--red); }
.toast-info    { border-left-color: var(--accent); }

/* ─── Footer ──────────────────────────────────────────────────────────────── */
footer {
  margin-top: auto;
  text-align: center;
  padding: 2rem;
  border-top: 1px solid var(--border);
  color: var(--text-300);
  font-size: .82rem;
  line-height: 1.8;
}

footer strong { color: var(--text-200); }

/* ─── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  #nav { padding: .75rem 1rem; }
  .hero { padding: 3rem 1rem 2rem; }
  .section { padding: 1.5rem 1rem; }
  .stats-bar { gap: 1.2rem; }
}

@media (max-width: 480px) {
  .nav-links { display: none; }
  .hero h1 { font-size: 1.8rem; }
}