:root {
  --bg: #0b1020;
  --bg-soft: #131a2e;
  --card: #171f36;
  --border: #26304d;
  --text: #e8ecf6;
  --muted: #9aa6c4;
  --accent: #5b8cff;
  --accent-2: #7c5cff;
  --good: #35c17f;
  --warn: #f0b429;
  --bad: #ef5f6b;
  --radius: 14px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: radial-gradient(1200px 600px at 80% -10%, #1b2445 0%, var(--bg) 60%);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: 1080px; margin: 0 auto; padding: 24px; }
.narrow { max-width: 440px; }

/* Nav */
.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px; border-bottom: 1px solid var(--border);
  position: sticky; top: 0; background: rgba(11,16,32,0.85); backdrop-filter: blur(8px); z-index: 10;
}
.brand { font-weight: 800; font-size: 20px; letter-spacing: -0.3px; }
.brand span { background: linear-gradient(90deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.nav-links { display: flex; gap: 18px; align-items: center; }
.nav-links a { color: var(--muted); font-weight: 500; }
.nav-links a:hover { color: var(--text); text-decoration: none; }

/* Hero */
.hero { text-align: center; padding: 72px 24px 48px; }
.hero h1 { font-size: 44px; line-height: 1.1; margin: 0 0 16px; letter-spacing: -1px; }
.hero h1 span { background: linear-gradient(90deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p { font-size: 19px; color: var(--muted); max-width: 640px; margin: 0 auto 28px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px; justify-content: center;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: white; border: none; border-radius: 10px; padding: 12px 22px;
  font-size: 15px; font-weight: 600; cursor: pointer; transition: transform .05s ease, opacity .2s;
}
.btn:hover { opacity: .92; text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn.secondary { background: var(--bg-soft); border: 1px solid var(--border); color: var(--text); }
.btn.small { padding: 6px 12px; font-size: 13px; border-radius: 8px; }
.btn.danger { background: linear-gradient(90deg, #ef5f6b, #d6455a); }
.btn.ghost { background: transparent; border: 1px solid var(--border); color: var(--muted); }

/* Cards & grid */
.grid { display: grid; gap: 18px; }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 1000px) { .grid.cols-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 820px) { .grid.cols-4, .grid.cols-3, .grid.cols-2 { grid-template-columns: 1fr; } }

.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px;
}
.card h3 { margin: 0 0 6px; }
.feature .icon { font-size: 28px; margin-bottom: 10px; }
.muted { color: var(--muted); }

/* Stats */
.stat { text-align: left; }
.stat .num { font-size: 30px; font-weight: 800; margin-top: 4px; }
.stat .num.sub { font-size: 21px; }
.stat .label { color: var(--muted); font-size: 14px; }

/* Forms */
.form-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px; }
label { display: block; font-size: 14px; color: var(--muted); margin: 14px 0 6px; }
input, select {
  width: 100%; padding: 11px 13px; background: var(--bg-soft);
  border: 1px solid var(--border); border-radius: 10px; color: var(--text); font-size: 15px;
}
input:focus, select:focus { outline: none; border-color: var(--accent); }
.form-card .btn { width: 100%; margin-top: 22px; }
.pass-wrap { position: relative; }
.pass-wrap input { padding-right: 46px; }
.pass-toggle {
  position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
  display: flex; align-items: center; justify-content: center;
  background: none; border: none; color: var(--muted); cursor: pointer;
  padding: 6px; border-radius: 8px;
}
.pass-toggle:hover { color: var(--text); }
.pass-toggle .eye-off { display: none; }
.pass-toggle.on .eye { display: none; }
.pass-toggle.on .eye-off { display: block; }
.error { color: var(--bad); font-size: 14px; margin-top: 12px; min-height: 18px; }
.center { text-align: center; }

/* Tables */
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 11px 12px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .5px; }
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }

/* Badges */
.badge { display: inline-block; padding: 3px 9px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge.ok { background: rgba(53,193,127,.15); color: var(--good); }
.badge.off { background: rgba(239,95,107,.15); color: var(--bad); }
.badge.warn { background: rgba(240,180,41,.15); color: var(--warn); }

/* Key card */
.keycard { display: flex; gap: 20px; align-items: flex-start; flex-wrap: wrap; }
.keycard .qr { background: white; padding: 10px; border-radius: 12px; }
.keycard .qr img { display: block; width: 160px; height: 160px; }
.keycard .info { flex: 1; min-width: 260px; }
.kv { display: flex; justify-content: space-between; padding: 7px 0; border-bottom: 1px dashed var(--border); font-size: 14px; }
.kv .k { color: var(--muted); }
.copybox { display: flex; gap: 8px; margin-top: 8px; }
.copybox input { font-family: ui-monospace, Menlo, monospace; font-size: 12px; }

/* Hiddify download card (landing) */
.store-card { margin-top: 18px; }
.stores { display: flex; gap: 32px; flex-wrap: wrap; justify-content: center; margin: 20px 0 10px; }
.store { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.store .qr { background: white; padding: 10px; border-radius: 12px; }
.store .qr img { display: block; width: 150px; height: 150px; }
.small-note { font-size: 13px; text-align: center; margin: 0 0 6px; }
.ios-note {
  background: rgba(240,180,41,.08); border: 1px solid rgba(240,180,41,.35);
  border-radius: 10px; padding: 14px 18px; margin-top: 16px; font-size: 14px;
}
.ios-note b { color: var(--warn); }
.ios-note ol { margin: 8px 0; padding-left: 20px; }
.ios-note li { margin: 4px 0; }

.section-title { display: flex; justify-content: space-between; align-items: center; margin: 28px 0 14px; }
.section-title h2 { margin: 0; font-size: 22px; }

.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--good); color: #06231a; padding: 10px 20px; border-radius: 10px;
  font-weight: 600; opacity: 0; transition: opacity .2s; pointer-events: none;
}
.toast.show { opacity: 1; }

.footer { text-align: center; color: var(--muted); padding: 40px 24px; font-size: 14px; border-top: 1px solid var(--border); margin-top: 40px; }
.footer code { font-family: ui-monospace, Menlo, monospace; font-size: 13px; background: var(--bg-soft); border: 1px solid var(--border); border-radius: 6px; padding: 1px 6px; }
.donate-card { display: flex; justify-content: space-between; align-items: center; gap: 18px; flex-wrap: wrap; margin-top: 18px; }
.donate-card p { margin: 0; font-size: 14px; }
.donate-card .btn { flex: none; }

/* Tabs */
.tabs { display: flex; gap: 4px; margin: 4px 0 22px; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.tab {
  background: none; border: none; color: var(--muted); font: inherit; font-size: 15px; font-weight: 600;
  padding: 10px 16px; cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--text); border-bottom-color: var(--accent); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* Charts (admin overview) */
.chart-controls { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin: 22px 0 14px; }
.seg { display: inline-flex; background: var(--bg-soft); border: 1px solid var(--border); border-radius: 10px; padding: 3px; gap: 2px; }
.seg button {
  background: none; border: none; color: var(--muted); font: inherit; font-size: 13px; font-weight: 600;
  padding: 6px 14px; border-radius: 8px; cursor: pointer;
}
.seg button:hover { color: var(--text); }
.seg button.active { background: var(--card); color: var(--text); box-shadow: inset 0 0 0 1px var(--border); }

.chart-card { padding: 18px 18px 12px; }
.chart-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 10px; }
.chart-head h3 { margin: 0; font-size: 15px; }
.legend { display: flex; gap: 14px; font-size: 12px; color: var(--muted); }
.legend .key { display: inline-flex; align-items: center; gap: 6px; }
.legend .key i { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }
.chart { position: relative; }
.chart svg { display: block; width: 100%; }
.chart svg text { font-family: inherit; font-size: 11px; fill: var(--muted); font-variant-numeric: tabular-nums; }
.chart .hitband { fill: transparent; outline: none; }
.chart-empty {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  color: var(--muted); font-size: 13px; text-align: center; padding: 0 16px;
}
.chart-tooltip {
  position: absolute; pointer-events: none; z-index: 5; display: none; min-width: 130px;
  background: rgba(11,16,32,0.96); border: 1px solid var(--border); border-radius: 10px;
  padding: 8px 11px; font-size: 12px; box-shadow: 0 8px 24px rgba(0,0,0,0.35);
}
.chart-tooltip .tt-title { color: var(--muted); margin-bottom: 5px; }
.chart-tooltip .tt-row { display: flex; align-items: center; gap: 7px; padding: 1px 0; }
.chart-tooltip .tt-row i { width: 10px; height: 3px; border-radius: 2px; flex: none; }
.chart-tooltip .tt-row b { font-variant-numeric: tabular-nums; }
.chart-tooltip .tt-row span { color: var(--muted); }
.hidden { display: none !important; }
.pills { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-top: 18px; }
.pill { background: var(--bg-soft); border: 1px solid var(--border); border-radius: 999px; padding: 8px 16px; font-size: 14px; color: var(--muted); }