/* RyuProxy — dùng chung cho index.html, app.html, api.html */
:root {
  --bg: #f6f7fb;
  --card: #ffffff;
  --text: #16181d;
  --muted: #5f6672;
  --line: #e3e6ee;
  --accent: #e5483b;
  --accent-ink: #ffffff;
  --accent-soft: #fdecea;
  --ok: #1a8f4c;
  --ok-soft: #e4f6ec;
  --warn: #a86200;
  --warn-soft: #fff3dc;
  --bad: #c62828;
  --bad-soft: #fdeaea;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .08);
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 15px; line-height: 1.55;
  overflow-wrap: anywhere;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { line-height: 1.25; margin: 0 0 .5em; }
code, pre, .mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 16px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.hidden { display: none !important; }

/* Đầu trang */
.topbar { background: var(--card); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 20; }
.topbar .wrap { display: flex; align-items: center; gap: 12px; min-height: 56px; }
.brand { white-space: nowrap; flex: none; display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 18px; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand svg { flex: none; }
.topnav { margin-left: auto; display: flex; gap: 4px; align-items: center; justify-content: flex-end; min-width: 0; }
@media (max-width: 420px) { .topnav .hide-xs { display: none; } }
.topnav a { white-space: nowrap; color: var(--text); padding: 6px 8px; border-radius: 8px; font-size: 14px; }
.topnav a:hover { background: var(--bg); text-decoration: none; }

/* Nút */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  border: 1px solid var(--line); background: var(--card); color: var(--text);
  padding: 8px 14px; border-radius: 10px; font: inherit; font-size: 14px; font-weight: 500;
  cursor: pointer; white-space: nowrap; min-height: 38px;
}
.btn:hover { text-decoration: none; border-color: #c9ceda; }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { border-color: var(--accent); filter: brightness(.95); }
.btn-danger { color: var(--bad); }
.btn-sm { padding: 4px 10px; min-height: 32px; font-size: 13px; }
.btn-lg { padding: 12px 22px; font-size: 16px; min-height: 48px; }
.btn-block { width: 100%; }

/* Thẻ */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px; }
.card + .card { margin-top: 16px; }
.card h2 { font-size: 18px; }
.grid { display: grid; gap: 16px; }
@media (min-width: 720px) { .grid-2 { grid-template-columns: 1fr 1fr; } .grid-3 { grid-template-columns: repeat(3, 1fr); } }

/* Biểu mẫu */
label { display: block; font-size: 14px; font-weight: 500; margin: 12px 0 4px; }
input, select {
  width: 100%; font: inherit; font-size: 15px; padding: 9px 12px; border: 1px solid var(--line);
  border-radius: 10px; background: #fff; color: var(--text); min-height: 42px;
}
input:focus, select:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
input[type=checkbox] { width: 18px; height: 18px; min-height: 0; padding: 0; margin: 0; flex: none; accent-color: var(--accent); vertical-align: middle; }
.hint { font-size: 13px; color: var(--muted); margin-top: 4px; }
.form-actions { margin-top: 16px; display: flex; gap: 8px; flex-wrap: wrap; }
.msg { margin-top: 12px; padding: 10px 12px; border-radius: 10px; font-size: 14px; }
.msg-err { background: var(--bad-soft); color: var(--bad); }
.msg-ok { background: var(--ok-soft); color: var(--ok); }
.msg-warn { background: var(--warn-soft); color: var(--warn); }

/* Nhãn */
.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; background: var(--bg); color: var(--muted); border: 1px solid var(--line); white-space: nowrap; }
.badge-http { background: #e8f0fe; color: #1a56c4; border-color: #cbdcfb; }
.badge-socks { background: #f1e8fd; color: #6b2fc0; border-color: #ddcbf7; }
.badge-ok { background: var(--ok-soft); color: var(--ok); border-color: #c4ead4; }
.badge-warn { background: var(--warn-soft); color: var(--warn); border-color: #f4dfb4; }
.badge-bad { background: var(--bad-soft); color: var(--bad); border-color: #f5c9c9; }

/* Bảng */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 13px; color: var(--muted); font-weight: 600; }
td.num, th.num { text-align: right; white-space: nowrap; }

/* ===== Landing ===== */
.hero { padding: 48px 0 36px; }
.hero h1 { font-size: 32px; letter-spacing: -.01em; }
.hero h1 span { color: var(--accent); }
.hero p.lead { font-size: 17px; color: var(--muted); max-width: 620px; margin: 0 0 22px; }
.hero .cta { display: flex; gap: 10px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 22px; flex-wrap: wrap; margin-top: 26px; color: var(--muted); font-size: 14px; }
.hero-stats b { display: block; color: var(--text); font-size: 20px; }
@media (min-width: 720px) { .hero { padding: 72px 0 48px; } .hero h1 { font-size: 44px; } }
.section { padding: 32px 0; }
.section > .wrap > h2 { font-size: 24px; margin-bottom: 16px; }
.features { display: grid; gap: 14px; }
@media (min-width: 640px) { .features { grid-template-columns: 1fr 1fr; } }
@media (min-width: 960px) { .features { grid-template-columns: repeat(3, 1fr); } }
.feature { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.feature .ico { width: 40px; height: 40px; border-radius: 10px; background: var(--accent-soft); color: var(--accent); display: flex; align-items: center; justify-content: center; margin-bottom: 10px; }
.feature h3 { font-size: 16px; margin-bottom: 4px; }
.feature p { margin: 0; color: var(--muted); font-size: 14px; }
.plans { display: grid; gap: 14px; }
@media (min-width: 640px) { .plans { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); } }
.plan { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; display: flex; flex-direction: column; gap: 6px; }
.plan .name { font-weight: 600; }
.plan .price { font-size: 26px; font-weight: 700; }
.plan .price small { font-size: 14px; font-weight: 400; color: var(--muted); }
.plan .old { color: var(--muted); text-decoration: line-through; font-size: 14px; }
.plan .btn { margin-top: auto; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; }
.faq details + details { margin-top: 10px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq details p { margin: 8px 0 0; color: var(--muted); }
.footer { border-top: 1px solid var(--line); background: var(--card); padding: 24px 0; margin-top: 32px; font-size: 14px; color: var(--muted); }
.footer .wrap { display: flex; gap: 16px; flex-wrap: wrap; justify-content: space-between; }
.footer .contacts { display: flex; gap: 14px; flex-wrap: wrap; }

/* ===== Bảng điều khiển ===== */
.app-shell { display: block; }
.sidenav { background: var(--card); border-bottom: 1px solid var(--line); }
.sidenav nav { display: flex; gap: 4px; overflow-x: auto; padding: 8px 16px; scrollbar-width: none; }
.sidenav nav::-webkit-scrollbar { display: none; }
.sidenav a { color: var(--text); padding: 8px 12px; border-radius: 8px; font-size: 14px; white-space: nowrap; display: flex; align-items: center; gap: 6px; }
.sidenav a:hover { background: var(--bg); text-decoration: none; }
.sidenav a.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.main { padding: 20px 16px 48px; max-width: 1120px; margin: 0 auto; min-width: 0; }
@media (min-width: 960px) {
  .app-shell { display: grid; grid-template-columns: 220px 1fr; min-height: calc(100vh - 57px); }
  .sidenav { border-bottom: 0; border-right: 1px solid var(--line); }
  .sidenav nav { flex-direction: column; padding: 16px 12px; position: sticky; top: 57px; }
  .main { padding: 28px 28px 60px; width: 100%; }
}
.page-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; margin-bottom: 16px; }
.page-head h1 { font-size: 22px; margin: 0; }
.auth-box { max-width: 420px; margin: 24px auto; }
.auth-box h1 { font-size: 22px; }
.stats { display: grid; gap: 12px; grid-template-columns: 1fr 1fr; }
@media (min-width: 720px) { .stats { grid-template-columns: repeat(4, 1fr); } }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; }
.stat .k { font-size: 13px; color: var(--muted); }
.stat .v { font-size: 22px; font-weight: 700; }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 6px 14px; font-size: 14px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; font-weight: 600; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.paycode { font-size: 22px; font-weight: 700; letter-spacing: .04em; color: var(--accent); }
.qr { max-width: 260px; width: 100%; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
.total { font-size: 20px; font-weight: 700; }
.amount-in { color: var(--ok); }
.amount-out { color: var(--bad); }

/* Danh sách proxy: thẻ trên điện thoại, bảng trên màn rộng */
.toolbar { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-bottom: 12px; }
.toolbar .chk { display: flex; align-items: center; gap: 6px; font-size: 14px; margin: 0; font-weight: 400; }
.px-list { display: grid; gap: 12px; }
.px { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; }
.px-top { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.px-conn { display: flex; gap: 8px; align-items: center; margin: 10px 0; background: var(--bg); border-radius: 8px; padding: 6px 6px 6px 10px; }
.px-conn code { flex: 1; min-width: 0; word-break: break-all; }
.px-meta { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 12px; font-size: 13px; }
.px-meta div span { display: block; color: var(--muted); font-size: 12px; }
.px-actions { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 12px; }
@media (min-width: 720px) { .px-meta { grid-template-columns: repeat(4, 1fr); } }
.empty { text-align: center; padding: 32px 16px; color: var(--muted); }

/* Hộp thoại + thông báo nổi */
.modal-bg { position: fixed; inset: 0; background: rgba(16, 20, 30, .45); display: flex; align-items: flex-end; justify-content: center; z-index: 50; padding: 0; }
.modal { background: var(--card); width: 100%; max-width: 460px; border-radius: 16px 16px 0 0; padding: 20px 16px; max-height: 90vh; overflow-y: auto; }
.modal h3 { font-size: 18px; }
@media (min-width: 600px) { .modal-bg { align-items: center; padding: 16px; } .modal { border-radius: 16px; padding: 22px; } }
.toasts { position: fixed; left: 16px; right: 16px; bottom: 16px; display: flex; flex-direction: column; gap: 8px; z-index: 60; pointer-events: none; align-items: center; }
.toast { background: #1f232b; color: #fff; padding: 10px 14px; border-radius: 10px; font-size: 14px; box-shadow: var(--shadow); max-width: 420px; width: 100%; pointer-events: auto; }
.toast.err { background: var(--bad); }
.toast.ok { background: var(--ok); }
.spinner { display: inline-block; width: 14px; height: 14px; border: 2px solid currentColor; border-right-color: transparent; border-radius: 50%; animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.loading { padding: 24px; text-align: center; color: var(--muted); }

/* ===== Tài liệu API ===== */
.doc { display: block; }
.doc-toc { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; margin-bottom: 20px; }
.doc-toc ol { margin: 0; padding-left: 20px; columns: 1; }
@media (min-width: 720px) { .doc-toc ol { columns: 2; } }
.endpoint { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; margin-bottom: 16px; scroll-margin-top: 70px; }
.endpoint h3 { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; font-size: 16px; }
.method { font-family: ui-monospace, Menlo, monospace; font-size: 12px; font-weight: 700; padding: 2px 8px; border-radius: 6px; }
.method.get { background: var(--ok-soft); color: var(--ok); }
.method.post { background: #e8f0fe; color: #1a56c4; }
pre { background: #1f232b; color: #e9edf3; padding: 12px 14px; border-radius: 10px; overflow-x: auto; margin: 8px 0; white-space: pre; }
p code, li code, td code { background: var(--bg); padding: 1px 5px; border-radius: 5px; border: 1px solid var(--line); }

/* Khoảng cách thẻ trong lưới / sau lưới */
.grid > .card + .card { margin-top: 0; }
.grid + .card, .stats + .grid { margin-top: 16px; }
td.nowrap { white-space: nowrap; }
@media (max-width: 480px) { .hide-sm { display: none; } }
.topbar-app .wrap { max-width: none; }