/* ============================================================================
   Obolpay shared components — nav, brand, buttons, cards, forms, badges,
   terminal panels, tabs, table, modal, toast, theme toggle.
   Compose these classes across pages; page CSS only adds layout.
   ========================================================================== */

/* ----------------------------------------------------------------- brand --- */
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700;
  font-size: 20px; letter-spacing: -0.03em; color: var(--text); }
.coin {
  width: 26px; height: 26px; border-radius: 50%; flex: none; position: relative;
  background: radial-gradient(circle at 34% 28%, #5B8CFF, var(--blue) 58%, var(--blue-700));
  box-shadow: inset 0 0 0 1.5px rgba(255,255,255,.30), 0 1px 4px rgba(0,40,120,.45);
}
.coin::after { content: "Ø"; position: absolute; inset: 0; display: grid; place-items: center;
  font-family: var(--font-sans); font-weight: 700; font-size: 14px; color: rgba(255,255,255,.95); }
.coin.lg { width: 48px; height: 48px; }
.coin.lg::after { font-size: 25px; }

/* ------------------------------------------------------------------- nav --- */
.nav { position: sticky; top: 0; z-index: 50; backdrop-filter: saturate(180%) blur(14px);
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  border-bottom: 1px solid var(--border); }
.nav-in { max-width: var(--maxw); margin: 0 auto; min-height: var(--nav-h);
  padding: 0 28px; display: flex; align-items: center; gap: 28px; }
.nav-links { display: flex; align-items: center; gap: 26px; margin-left: auto; }
/* :not(.btn) so a button-styled nav link (e.g. "Start selling free") keeps its
   own white-on-accent text instead of inheriting the gray nav-link color. */
.nav-links a:not(.btn) { font-size: 14.5px; font-weight: 500; color: var(--text-2); transition: color .18s; }
.nav-links a:not(.btn):hover { color: var(--text); }
@media (max-width: 760px) { .nav-links .nav-hide { display: none; } .nav-in { gap: 14px; } }

/* --------------------------------------------------------------- buttons --- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: inherit; font-weight: 600; font-size: 14.5px; line-height: 1;
  padding: 11px 18px; border-radius: var(--r-sm); border: 1px solid transparent;
  cursor: pointer; white-space: nowrap; transition: all .2s var(--ease); user-select: none; }
.btn:focus-visible { outline: none; box-shadow: 0 0 0 3px var(--accent-ring); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); transform: translateY(-1px);
  box-shadow: 0 6px 18px -4px var(--accent-ring); }
.btn-secondary { background: var(--surface); color: var(--text); border-color: var(--border-strong); }
.btn-secondary:hover:not(:disabled) { background: var(--surface-2); border-color: var(--text-3); }
.btn-ghost { background: transparent; color: var(--text-2); }
.btn-ghost:hover:not(:disabled) { background: var(--surface-2); color: var(--text); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover:not(:disabled) { filter: brightness(1.06); }
.btn-block { width: 100%; }
.btn-lg { padding: 14px 24px; font-size: 15.5px; border-radius: var(--r); }
.btn-sm { padding: 8px 12px; font-size: 13px; }
.btn-pill { border-radius: var(--r-pill); }

/* ----------------------------------------------------------------- cards --- */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm); }
.card.pad { padding: 24px; }
.card.hover { transition: border-color .2s, box-shadow .2s, transform .2s; }
.card.hover:hover { border-color: var(--border-strong); box-shadow: var(--shadow); transform: translateY(-2px); }

/* --------------------------------------------------------------- stat tiles --- */
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r);
  padding: 18px 20px; box-shadow: var(--shadow-sm); }
.stat .k { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .05em;
  text-transform: uppercase; color: var(--text-3); }
.stat .v { font-size: 30px; font-weight: 680; letter-spacing: -.02em; margin-top: 8px; }
.stat .v small { font-size: 15px; color: var(--text-3); font-weight: 500; }

/* ----------------------------------------------------------------- forms --- */
label, .label { display: block; font-size: 13px; font-weight: 600; color: var(--text-2); margin-bottom: 7px; }
input, select, textarea { font-family: inherit; font-size: 14.5px; color: var(--text);
  width: 100%; padding: 11px 13px; background: var(--bg); border: 1px solid var(--border-strong);
  border-radius: var(--r-sm); transition: border-color .18s, box-shadow .18s; }
input::placeholder, textarea::placeholder { color: var(--text-3); }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-ring); }
input.mono, select.mono, textarea.mono { font-family: var(--font-mono); }
select { cursor: pointer; appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M3 4.5L6 7.5L9 4.5' stroke='%238A93A2' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 12px center; padding-right: 32px; }
.field { margin-bottom: 16px; }
.hint { font-size: 12.5px; color: var(--text-3); margin-top: 6px; }
.switch { display: inline-flex; align-items: center; gap: 9px; cursor: pointer; font-size: 14px; color: var(--text-2); }
.switch input { width: auto; }

/* --------------------------------------------------------------- badges --- */
.badge { display: inline-flex; align-items: center; gap: 6px; font-family: var(--font-mono);
  font-size: 11.5px; font-weight: 500; letter-spacing: .02em; padding: 4px 9px; border-radius: var(--r-pill);
  background: var(--surface-2); color: var(--text-2); border: 1px solid var(--border); }
.badge.success { background: var(--success-soft); color: var(--success); border-color: transparent; }
.badge.warn { background: var(--warn-soft); color: var(--warn); border-color: transparent; }
.badge.danger { background: var(--danger-soft); color: var(--danger); border-color: transparent; }
.badge.info { background: var(--info-soft); color: var(--info); border-color: transparent; }
.badge.accent { background: var(--accent-soft); color: var(--accent); border-color: transparent; }
.badge .dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

/* --------------------------------------------------------- terminal panel --- */
.terminal { background: var(--term-bg); border: 1px solid var(--term-border);
  border-radius: var(--r-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
.terminal-bar { display: flex; align-items: center; gap: 7px; padding: 13px 16px;
  border-bottom: 1px solid var(--term-border); }
.terminal-bar .tdot { width: 11px; height: 11px; border-radius: 50%; }
.terminal-bar .tdot.r { background: #FF5F57; } .terminal-bar .tdot.y { background: #FEBC2E; }
.terminal-bar .tdot.g { background: #28C840; }
.terminal-bar .title { margin-left: auto; font-family: var(--font-mono); font-size: 12px; color: var(--term-dim); }
.terminal pre, .terminal .body { color: var(--term-text); font-family: var(--font-mono); }
.terminal pre { padding: 22px; overflow-x: auto; font-size: 13.5px; line-height: 1.7; }
.tok-c { color: var(--term-dim); }       /* comment */
.tok-k { color: var(--term-violet); }     /* keyword */
.tok-s { color: var(--term-green); }      /* string */
.tok-f { color: var(--term-blue); }       /* function */
.tok-n { color: var(--term-amber); }      /* number/amount */

/* ------------------------------------------------------------------ tabs --- */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); overflow-x: auto; }
.tabs button { background: none; border: none; font-family: inherit; font-size: 14px; font-weight: 600;
  color: var(--text-3); padding: 12px 14px; cursor: pointer; border-bottom: 2px solid transparent;
  white-space: nowrap; transition: color .18s, border-color .18s; margin-bottom: -1px; }
.tabs button:hover { color: var(--text-2); }
.tabs button.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ----------------------------------------------------------------- table --- */
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th { text-align: left; font-family: var(--font-mono); font-size: 11px; font-weight: 500;
  letter-spacing: .05em; text-transform: uppercase; color: var(--text-3); padding: 10px 14px;
  border-bottom: 1px solid var(--border); }
.table td { padding: 13px 14px; border-bottom: 1px solid var(--border); color: var(--text-2); vertical-align: middle; }
.table tr:last-child td { border-bottom: none; }
.table tr:hover td { background: var(--surface-2); }

/* ------------------------------------------------------------------ misc --- */
.divider { height: 1px; background: var(--border); border: none; margin: 24px 0; }
.empty { text-align: center; color: var(--text-3); padding: 52px 0; }
.copy-btn { display: inline-flex; align-items: center; justify-content: center; cursor: pointer;
  border: 1px solid var(--border-strong); background: var(--surface); color: var(--text-2);
  border-radius: var(--r-xs); padding: 5px; transition: all .15s; }
.copy-btn:hover { color: var(--accent); border-color: var(--accent); }

/* ----------------------------------------------------------- theme toggle --- */
.theme-toggle { display: inline-grid; place-items: center; width: 36px; height: 36px;
  border-radius: var(--r-sm); border: 1px solid var(--border); background: var(--surface);
  color: var(--text-2); cursor: pointer; transition: all .18s; flex: none; }
.theme-toggle:hover { color: var(--text); border-color: var(--border-strong); }
.theme-toggle .sun { display: none; } .theme-toggle .moon { display: block; }
:root[data-theme="dark"] .theme-toggle .sun { display: block; }
:root[data-theme="dark"] .theme-toggle .moon { display: none; }

/* ----------------------------------------------------------------- toast --- */
#toast { position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%) translateY(20px);
  background: var(--text); color: var(--bg); font-size: 14px; font-weight: 500;
  padding: 12px 20px; border-radius: var(--r-pill); box-shadow: var(--shadow-lg);
  opacity: 0; pointer-events: none; transition: opacity .25s, transform .25s var(--ease-out); z-index: 200; }
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ----------------------------------------------------------------- modal --- */
.modal-overlay { position: fixed; inset: 0; background: rgba(8, 12, 22, .55); backdrop-filter: blur(4px);
  display: grid; place-items: center; padding: 24px; z-index: 150; opacity: 0; animation: fade .2s forwards; }
@keyframes fade { to { opacity: 1; } }
.modal { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg);
  box-shadow: var(--shadow-lg); width: 100%; max-width: 460px; padding: 26px; }
.modal h3 { font-size: 19px; margin-bottom: 6px; }
.modal .modal-note { color: var(--text-2); font-size: 14px; margin-bottom: 18px; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 22px; }