/* NiceP2P - dark theme, Binance-inspired */
:root {
  --bg: #0b0e11;
  --bg2: #181a20;
  --bg3: #1e2329;
  --border: #2b3139;
  --text: #eaecef;
  --muted: #848e9c;
  --accent: #f0b90b;
  --accent-hover: #fcd535;
  --green: #0ecb81;
  --red: #f6465d;
  --blue: #4a9eff;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", Roboto, Arial, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 16px; }
main.container { flex: 1; padding-top: 24px; padding-bottom: 48px; }
.muted { color: var(--muted); }
.text-green { color: var(--green); }
.text-red { color: var(--red); }
.mt { margin-top: 16px; }
.mb { margin-bottom: 16px; }

/* Header */
.site-header { background: var(--bg2); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; }
.header-inner { display: flex; align-items: center; gap: 24px; height: 64px; }
.logo { font-size: 22px; font-weight: 700; color: var(--text); }
.logo span { color: var(--accent); }
.main-nav { display: flex; gap: 20px; flex: 1; }
.main-nav a { color: var(--text); font-weight: 500; }
.main-nav a:hover { color: var(--accent); }
.header-right { display: flex; gap: 10px; align-items: center; }

/* Dropdown */
.dropdown { position: relative; }
.dropdown-menu {
  display: none; position: absolute; right: 0; top: 110%;
  background: var(--bg3); border: 1px solid var(--border); border-radius: 8px;
  min-width: 170px; padding: 6px 0; box-shadow: 0 8px 24px rgba(0,0,0,.5);
}
.dropdown-menu a { display: block; padding: 9px 16px; color: var(--text); }
.dropdown-menu a:hover { background: var(--bg2); color: var(--accent); }
.dropdown.open .dropdown-menu { display: block; }

/* Buttons */
.btn {
  display: inline-block; padding: 9px 18px; border-radius: 6px; border: none;
  font-size: 14px; font-weight: 600; cursor: pointer; text-align: center;
  transition: background .15s;
}
.btn-primary { background: var(--accent); color: #181a20; }
.btn-primary:hover { background: var(--accent-hover); color: #181a20; }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-green { background: var(--green); color: #fff; }
.btn-green:hover { background: #0bb371; color: #fff; }
.btn-red { background: var(--red); color: #fff; }
.btn-red:hover { background: #d63a4f; color: #fff; }
.btn-sm { padding: 5px 12px; font-size: 13px; }
.btn-block { display: block; width: 100%; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* Cards / panels */
.card {
  background: var(--bg2); border: 1px solid var(--border); border-radius: 10px;
  padding: 24px; margin-bottom: 20px;
}
.card h2, .card h3 { margin-bottom: 16px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

/* Hero */
.hero { text-align: center; padding: 56px 16px 40px; }
.hero h1 { font-size: 40px; margin-bottom: 12px; }
.hero h1 span { color: var(--accent); }
.hero p { color: var(--muted); font-size: 18px; max-width: 640px; margin: 0 auto 24px; }

/* Price ticker */
.ticker { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 32px; }
.ticker-item {
  background: var(--bg2); border: 1px solid var(--border); border-radius: 10px;
  padding: 16px 20px;
}
.ticker-item .sym { font-weight: 700; font-size: 15px; }
.ticker-item .price { font-size: 22px; font-weight: 700; margin: 4px 0; }
.ticker-item .chg { font-size: 13px; font-weight: 600; }

/* Forms */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 6px; font-weight: 600; font-size: 14px; }
input[type=text], input[type=email], input[type=password], input[type=number], select, textarea {
  width: 100%; padding: 10px 12px; background: var(--bg3); color: var(--text);
  border: 1px solid var(--border); border-radius: 6px; font-size: 14px; font-family: inherit;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); }
textarea { resize: vertical; min-height: 90px; }
.form-hint { font-size: 13px; color: var(--muted); margin-top: 4px; }
.form-narrow { max-width: 440px; margin: 0 auto; }
.checkbox-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.checkbox-grid label { display: flex; align-items: center; gap: 8px; font-weight: 400; font-size: 13px; margin: 0; cursor: pointer; }

/* Tables */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--border); font-size: 14px; }
th { color: var(--muted); font-weight: 600; font-size: 13px; text-transform: uppercase; letter-spacing: .03em; }
tr:hover td { background: rgba(255,255,255,.02); }

/* Badges */
.badge {
  display: inline-block; padding: 3px 10px; border-radius: 20px;
  font-size: 12px; font-weight: 600;
}
.badge-success { background: rgba(14,203,129,.15); color: var(--green); }
.badge-warn { background: rgba(240,185,11,.15); color: var(--accent); }
.badge-error { background: rgba(246,70,93,.15); color: var(--red); }
.badge-info { background: rgba(74,158,255,.15); color: var(--blue); }
.badge-muted { background: rgba(132,142,156,.15); color: var(--muted); }
.badge-buy { background: rgba(14,203,129,.15); color: var(--green); }
.badge-sell { background: rgba(246,70,93,.15); color: var(--red); }

/* Alerts */
.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-size: 14px; }
.alert-success { background: rgba(14,203,129,.12); border: 1px solid var(--green); color: var(--green); }
.alert-error { background: rgba(246,70,93,.12); border: 1px solid var(--red); color: var(--red); }
.alert-info { background: rgba(74,158,255,.12); border: 1px solid var(--blue); color: var(--blue); }

/* Tabs & filters */
.tabs { display: inline-flex; background: var(--bg3); border-radius: 8px; padding: 4px; margin-bottom: 20px; }
.tabs a { padding: 8px 28px; border-radius: 6px; color: var(--muted); font-weight: 600; }
.tabs a.active-buy { background: var(--green); color: #fff; }
.tabs a.active-sell { background: var(--red); color: #fff; }
.filter-bar { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 20px; align-items: flex-end; }
.filter-bar .form-group { margin: 0; min-width: 150px; }
.crypto-tabs { display: flex; gap: 8px; margin-bottom: 20px; }
.crypto-tabs a {
  padding: 7px 18px; border-radius: 6px; background: var(--bg3); color: var(--muted);
  font-weight: 600; border: 1px solid var(--border);
}
.crypto-tabs a.active { background: var(--accent); color: #181a20; border-color: var(--accent); }

/* Offer rows */
.offer-user { display: flex; flex-direction: column; }
.offer-user a { color: var(--text); font-weight: 600; }
.offer-user a:hover { color: var(--accent); }
.offer-user small { color: var(--muted); }
.pm-tags { display: flex; flex-wrap: wrap; gap: 4px; }
.pm-tag {
  font-size: 12px; padding: 2px 8px; border-radius: 4px;
  background: var(--bg3); border: 1px solid var(--border); color: var(--muted);
}

/* Chat */
.chat-box { height: 380px; overflow-y: auto; background: var(--bg3); border: 1px solid var(--border); border-radius: 8px; padding: 14px; margin-bottom: 12px; }
.chat-msg { margin-bottom: 10px; max-width: 80%; }
.chat-msg .bubble { display: inline-block; background: var(--bg2); border: 1px solid var(--border); border-radius: 10px; padding: 8px 12px; font-size: 14px; }
.chat-msg.mine { margin-left: auto; text-align: right; }
.chat-msg.mine .bubble { background: rgba(240,185,11,.12); border-color: rgba(240,185,11,.35); }
.chat-msg.system { max-width: 100%; text-align: center; }
.chat-msg.system .bubble { background: transparent; border: none; color: var(--muted); font-size: 13px; font-style: italic; }
.chat-msg small { display: block; color: var(--muted); font-size: 11px; margin-top: 2px; }
.chat-form { display: flex; gap: 8px; }
.chat-form input { flex: 1; }

/* Steps / how it works */
.step { text-align: center; padding: 20px; }
.step .num {
  width: 44px; height: 44px; border-radius: 50%; background: var(--accent); color: #181a20;
  font-weight: 700; font-size: 20px; display: flex; align-items: center; justify-content: center;
  margin: 0 auto 12px;
}

/* Wallet */
.balance-row { display: flex; justify-content: space-between; align-items: center; padding: 14px 0; border-bottom: 1px solid var(--border); }
.balance-row:last-child { border-bottom: none; }
.coin-name { font-weight: 700; }
.addr-box {
  background: var(--bg3); border: 1px dashed var(--accent); border-radius: 8px;
  padding: 12px; font-family: monospace; word-break: break-all; margin: 10px 0;
}

/* Order summary */
.summary-row { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
.summary-row:last-child { border-bottom: none; }
.summary-row .v { font-weight: 600; }
.big-amount { font-size: 26px; font-weight: 700; color: var(--accent); }

/* Footer */
.site-footer { background: var(--bg2); border-top: 1px solid var(--border); padding: 40px 0 0; margin-top: 40px; }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 24px; padding-bottom: 24px; }
.site-footer h4 { margin-bottom: 10px; }
.site-footer a { display: block; color: var(--muted); margin-bottom: 6px; }
.site-footer a:hover { color: var(--accent); }
.site-footer .logo { display: inline-block; margin-bottom: 8px; }
.copyright { border-top: 1px solid var(--border); padding: 16px; text-align: center; color: var(--muted); font-size: 13px; }

/* Responsive */
@media (max-width: 900px) {
  .grid-3, .grid-4, .ticker { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .main-nav { display: none; }
  .checkbox-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .grid-2, .grid-3, .grid-4, .ticker { grid-template-columns: 1fr; }
  .hero h1 { font-size: 28px; }
}