/* Wall4You - black / white / blue. Square corners echo the pixels. */

:root {
  --ink: #000;
  --paper: #fff;
  --blue: #1f4fff;
  --blue-dark: #1238c9;
  --tile: #e6e9ef;      /* an unused pixel */
  --line: #dfe3ea;
  --muted: #5b6270;
  --danger: #c0262d;
  --font: "Avenir Next", "Segoe UI", "Helvetica Neue", Arial, system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  line-height: 1.5;
}

a { color: inherit; }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 2px; }

/* ---------- Header ---------- */
.site-header {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  text-decoration: none;
}
.logo-mark { width: 22px; height: 22px; display: block; }
.logo-mark .ink { fill: var(--ink); }
.logo-mark .blue { fill: var(--blue); }

.nav { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 22px; }
.nav a {
  text-decoration: none;
  font-weight: 600;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
}
.nav a:hover { border-bottom-color: var(--ink); }
.nav a[aria-current="page"] { border-bottom-color: var(--blue); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 11px 20px;
  border: 2px solid var(--ink);
  border-radius: 2px;
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}
.btn:hover { background: var(--ink); color: var(--paper); }
.btn-primary { background: var(--blue); border-color: var(--blue); color: var(--paper); }
.btn-primary:hover { background: var(--blue-dark); border-color: var(--blue-dark); }
.btn-ghost { border-color: var(--line); }
.btn-large { padding: 18px 38px; font-size: 1.15rem; }
.btn[disabled] { opacity: 0.55; cursor: progress; }

/* ---------- Home / error hero ---------- */
.hero {
  min-height: calc(100vh - 62px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  padding: 40px 24px 64px;
  text-align: center;
}

/* Decorative strip of tiles: grey pixels with a few claimed ones */
.tiles {
  position: relative;
  width: min(100%, 576px);
  height: 96px;
  margin-bottom: 12px;
  background-color: var(--tile);
  background-image:
    linear-gradient(to right, var(--paper) 2px, transparent 2px),
    linear-gradient(to bottom, var(--paper) 2px, transparent 2px);
  background-size: 16px 16px;
  -webkit-mask-image: linear-gradient(to right, transparent, #000 18%, #000 82%, transparent);
  mask-image: linear-gradient(to right, transparent, #000 18%, #000 82%, transparent);
}
.tiles::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 2px;
  width: 14px;
  height: 14px;
  background: var(--blue);
  box-shadow:
    80px 0 0 #111,
    96px 0 0 #111,
    176px 16px 0 #e8452c,
    192px 16px 0 #e8452c,
    192px 32px 0 #e8452c,
    272px 48px 0 var(--blue),
    288px 48px 0 var(--blue),
    288px 64px 0 var(--blue),
    352px 16px 0 #1a9e6e,
    368px 32px 0 #1a9e6e,
    432px 64px 0 #111,
    448px 64px 0 #111,
    448px 80px 0 #111,
    128px 64px 0 #e0a100,
    144px 64px 0 #e0a100,
    336px 80px 0 #e0a100;
}

.hero-title {
  margin: 0;
  font-size: clamp(3.2rem, 11vw, 7.5rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.05em;
}
.hero-slogan {
  margin: 0 0 12px;
  font-size: clamp(1.1rem, 2.6vw, 1.5rem);
  color: var(--muted);
}

.hero-steps {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 28px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  font-size: 1.05rem;
  font-weight: 600;
}
.hero-steps .free { color: var(--blue); }

.error-code {
  margin: 0;
  font-size: clamp(5rem, 22vw, 11rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.06em;
  color: var(--blue);
}
.error-title { margin: 0; font-size: clamp(1.6rem, 5vw, 2.4rem); letter-spacing: -0.03em; }

/* ---------- Wall page ---------- */
.wall-app { padding: 18px 24px 140px; }

.stats {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 28px;
  align-items: baseline;
  margin-bottom: 6px;
}
.stat { margin: 0; }
.stat strong { font-weight: 800; font-variant-numeric: tabular-nums; }
.stat-percent { margin-left: auto; }

.hint { margin: 0; color: var(--muted); font-size: 0.95rem; flex: 1 1 320px; }

.wall-scroll {
  width: fit-content;
  max-width: 100%;
  max-height: calc(100vh - 230px);   /* zoomed-in walls scroll inside this viewport */
  min-height: 240px;
  margin: 0 auto;
  overflow: auto;                 /* mobile: scroll the wall sideways */
  border: 2px solid var(--ink);
  background: var(--paper);
  -webkit-overflow-scrolling: touch;
}
#wall-canvas { display: block; cursor: pointer; }

/* ---------- Tooltip / toast ---------- */
.tooltip {
  position: fixed;
  z-index: 30;
  max-width: 280px;
  padding: 7px 11px;
  background: var(--ink);
  color: var(--paper);
  font-size: 0.85rem;
  line-height: 1.35;
  white-space: pre-line;
  overflow-wrap: anywhere;
  pointer-events: none;
}

.toast {
  position: fixed;
  z-index: 40;
  top: 76px;
  left: 50%;
  transform: translateX(-50%);
  max-width: min(92vw, 520px);
  padding: 12px 18px;
  background: var(--ink);
  color: var(--paper);
  font-weight: 600;
  text-align: center;
}
.toast.error { background: var(--danger); }
.toast.success { background: var(--blue); }

/* ---------- Claim panel ---------- */
.panel {
  position: fixed;
  z-index: 20;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 12px 20px;
  padding: 14px 24px calc(14px + env(safe-area-inset-bottom, 0px));
  background: var(--paper);
  border-top: 2px solid var(--ink);
}
.panel-count { margin: 0; font-weight: 800; font-size: 1.05rem; align-self: center; }
.panel-field { display: flex; flex-direction: column; gap: 4px; flex: 1 1 280px; font-weight: 600; font-size: 0.9rem; }
.panel-field input {
  width: 100%;
  padding: 10px 12px;
  border: 2px solid var(--ink);
  border-radius: 2px;
  font: inherit;
  font-weight: 400;
}
.panel-field input[aria-invalid="true"] { border-color: var(--danger); }
.panel-image { flex: 1 1 260px; }
.panel-image label { font-weight: 600; font-size: 0.9rem; }
.image-row { display: flex; align-items: center; gap: 12px; }
.image-row input[type="file"] { flex: 1; min-width: 0; padding: 0; border: 0; font: inherit; font-size: 0.85rem; font-weight: 400; }
.image-preview { width: 44px; height: 44px; object-fit: contain; border: 2px solid var(--ink); background: var(--tile); }
.image-note { color: var(--muted); font-weight: 400; min-height: 1.2em; }
.panel-actions { display: flex; gap: 10px; }

/* ---------- Header account links ---------- */
.nav-user { font-weight: 800; padding: 2px 10px; background: var(--tile); }
.nav-link-btn {
  padding: 4px 0;
  border: 0;
  border-bottom: 2px solid transparent;
  background: none;
  color: inherit;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
.nav-link-btn:hover { border-bottom-color: var(--ink); }
.nav a.nav-signup {
  padding: 4px 14px;
  border: 2px solid var(--blue);
  background: var(--blue);
  color: var(--paper);
}
.nav a.nav-signup:hover { background: var(--blue-dark); border-color: var(--blue-dark); }

/* ---------- Small buttons, danger ---------- */
.btn-small { padding: 6px 12px; font-size: 0.9rem; }
.btn-danger { background: var(--danger); border-color: var(--danger); color: var(--paper); }
.btn-danger:hover { background: #8f1a20; border-color: #8f1a20; }
.btn[aria-pressed="true"] { background: var(--ink); color: var(--paper); }

/* ---------- Wall toolbar: hint, zoom, manage mode ---------- */
.toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 20px; margin-bottom: 12px; }
.controls { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; }
.zoom { display: flex; align-items: center; gap: 6px; }
.zoom-level { min-width: 4ch; text-align: center; font-weight: 800; font-variant-numeric: tabular-nums; }
.btn[disabled] { opacity: 0.4; cursor: not-allowed; }
.manage-on .wall-scroll { border-color: var(--danger); }
.manage-on #wall-canvas { cursor: crosshair; }
.panel-note { margin: 0; align-self: center; color: var(--muted); font-size: 0.9rem; flex: 1 1 200px; }

/* ---------- Login / sign up ---------- */
.auth { max-width: 420px; margin: 0 auto; padding: 56px 24px 80px; }
.auth-title { margin: 0 0 6px; font-size: clamp(2rem, 6vw, 2.8rem); letter-spacing: -0.04em; line-height: 1.1; }
.auth-sub { margin: 0 0 28px; color: var(--muted); }
.auth-form { display: flex; flex-direction: column; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 4px; font-weight: 700; }
.field input {
  padding: 12px 14px;
  border: 2px solid var(--ink);
  border-radius: 2px;
  font: inherit;
  font-weight: 400;
}
.field input[aria-invalid="true"] { border-color: var(--danger); }
.field small { color: var(--muted); font-weight: 400; }
.form-error { margin: 0; padding: 10px 14px; background: var(--danger); color: var(--paper); font-weight: 600; }
.auth-switch { margin-top: 24px; color: var(--muted); }
.auth-switch a { color: var(--blue); font-weight: 700; }

/* ---------- Admin ---------- */
.admin { max-width: 1100px; margin: 0 auto; padding: 32px 24px 80px; }
.admin-title { margin: 0 0 8px; font-size: 2.4rem; letter-spacing: -0.04em; }
.admin-section { margin-top: 36px; }
.admin-section h2 { margin: 0 0 6px; font-size: 1.4rem; letter-spacing: -0.02em; }
.muted { color: var(--muted); }
.check { display: flex; align-items: center; gap: 10px; margin: 10px 0 14px; font-weight: 600; }
.table-wrap { overflow-x: auto; border: 2px solid var(--ink); }
.table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.table th, .table td { padding: 9px 12px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: middle; }
.table th { background: var(--tile); font-weight: 800; white-space: nowrap; }
.table td.break { overflow-wrap: anywhere; max-width: 280px; }
.table .thumb { width: 44px; height: 44px; object-fit: cover; display: block; border: 1px solid var(--line); }
.table .tag { display: inline-block; padding: 1px 8px; background: var(--ink); color: var(--paper); font-size: 0.8rem; font-weight: 700; }

/* ---------- Credits (header badge, cost note) ---------- */
.nav a.nav-credits {
  padding: 2px 10px;
  border: 2px solid var(--blue);
  color: var(--blue);
  font-weight: 700;
}
.nav a.nav-credits:hover { background: var(--blue); color: var(--paper); border-color: var(--blue); }
.cost-note { margin: 0; align-self: center; flex: 1 1 200px; font-weight: 700; font-size: 0.9rem; }
.cost-note.warn { color: var(--danger); }
.cost-note a { color: var(--blue); }

/* ---------- Home footer ---------- */
.page-home .hero { min-height: calc(100vh - 62px - 64px); }
.site-footer { padding: 18px 24px 26px; text-align: center; color: var(--muted); font-size: 0.95rem; }
.site-footer p { margin: 0; }

/* ---------- Top-up page ---------- */
.topup { max-width: 1000px; margin: 0 auto; padding: 36px 24px 90px; }
.topup-title { margin: 0 0 6px; font-size: clamp(2rem, 6vw, 2.8rem); letter-spacing: -0.04em; line-height: 1.1; }
.topup-sub { margin: 0 0 28px; color: var(--muted); font-size: 1.05rem; }
.topup-sub strong { color: var(--ink); }
.topup h2 { margin: 0 0 6px; font-size: 1.3rem; letter-spacing: -0.02em; }
.topup-grid { display: grid; grid-template-columns: minmax(0, 430px) minmax(0, 1fr); gap: 36px; align-items: start; }
.qr-img { display: block; width: 100%; max-width: 430px; height: auto; margin: 14px 0; border: 2px solid var(--ink); background: var(--paper); }
.memo { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; margin: 0; font-weight: 600; }
.memo code { padding: 4px 10px; background: var(--tile); font-size: 1rem; font-weight: 800; }
.topup-form { display: flex; flex-direction: column; gap: 18px; margin-top: 14px; }
.topup-form textarea {
  padding: 12px 14px;
  border: 2px solid var(--ink);
  border-radius: 2px;
  font: inherit;
  font-weight: 400;
  resize: vertical;
}
.topup-form input[aria-invalid="true"], .topup-form textarea[aria-invalid="true"] { border-color: var(--danger); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  padding: 6px 12px;
  border: 2px solid var(--line);
  border-radius: 2px;
  background: var(--paper);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}
.chip:hover, .chip[aria-pressed="true"] { border-color: var(--blue); color: var(--blue); }
.form-msg { margin: 0; padding: 10px 14px; background: var(--ink); color: var(--paper); font-weight: 600; }
.form-msg.error { background: var(--danger); }
.form-msg.success { background: var(--blue); }
.topup-history { margin-top: 44px; }
.topup-history .table-wrap { margin-top: 12px; }
.tag-pending, .tag-approved, .tag-rejected { display: inline-block; padding: 1px 9px; font-size: 0.82rem; font-weight: 800; }
.tag-pending { background: #f5c542; color: #000; }
.tag-approved { background: var(--blue); color: var(--paper); }
.tag-rejected { background: var(--danger); color: var(--paper); }
.reason { display: block; margin-top: 4px; color: var(--muted); font-size: 0.85rem; font-weight: 400; }

/* ---------- Admin: grant credits ---------- */
.grant-form { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 14px; margin-top: 12px; }
.grant-form .field { flex: 0 1 220px; }
.table td.actions { white-space: nowrap; }
.table td.actions .btn + .btn { margin-left: 6px; }

/* ---------- Gift codes ---------- */
.gift { max-width: 1000px; margin: 0 auto; padding: 36px 24px 90px; }
.gift-title { margin: 0 0 6px; font-size: clamp(2rem, 6vw, 2.8rem); letter-spacing: -0.04em; line-height: 1.1; }
.gift-sub { margin: 0 0 18px; color: var(--muted); font-size: 1.05rem; }
.gift h2 { margin: 0 0 6px; font-size: 1.3rem; letter-spacing: -0.02em; }
.rules { margin: 0 0 30px; padding: 16px 20px 16px 38px; background: var(--tile); font-weight: 600; }
.rules li { margin: 4px 0; }
.gift-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 36px; align-items: start; }
.gift-status { margin: 10px 0 14px; min-height: 1.5em; }
.gift-status.warn { color: var(--danger); font-weight: 700; }
.code-box {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  margin: 16px 0;
  padding: 16px 18px;
  border: 2px solid var(--blue);
}
.code-value { font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace; font-size: 1.9rem; font-weight: 800; letter-spacing: 0.06em; color: var(--blue); }
.code-meta { flex-basis: 100%; margin: 0; color: var(--muted); font-size: 0.9rem; }
.redeem-form { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 12px; margin-top: 12px; }
.redeem-form .field { flex: 1 1 200px; }
.redeem-form input { text-transform: uppercase; letter-spacing: 0.06em; font-weight: 700; }
.tag-code-active { display: inline-block; padding: 1px 9px; font-size: 0.82rem; font-weight: 800; background: var(--blue); color: var(--paper); }
.tag-code-expired, .tag-code-full { display: inline-block; padding: 1px 9px; font-size: 0.82rem; font-weight: 800; background: var(--line); color: var(--ink); }
.gift-history { margin-top: 40px; }

/* ---------- Home: QR share + tutorial link ---------- */
.hero-link { color: var(--blue); font-weight: 700; text-decoration: none; border-bottom: 2px solid transparent; }
.hero-link:hover { border-bottom-color: var(--blue); }
.qr-share {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 18px 24px;
  max-width: 560px;
  margin-top: 34px;
  padding: 18px 22px;
  border: 2px solid var(--ink);
  text-align: left;
}
.qr-share-img { display: block; width: 168px; height: 168px; }
.qr-share-text { flex: 1 1 220px; }
.qr-share-text h2 { margin: 0 0 6px; font-size: 1.3rem; letter-spacing: -0.02em; }
.qr-share-text p { margin: 0 0 8px; }
.qr-share-text a { color: var(--blue); font-weight: 700; }
.qr-share-links { font-size: 0.92rem; }

/* ---------- Tutorial page ---------- */
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

.guide { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 40px; max-width: 1180px; margin: 0 auto; padding: 32px 24px 90px; align-items: start; }
.toc { position: sticky; top: 16px; max-height: calc(100vh - 32px); overflow: auto; padding: 14px 16px; border: 2px solid var(--ink); font-size: 0.93rem; }
.toc-title { margin: 0 0 8px; font-weight: 800; font-size: 1rem; }
.toc ol { margin: 0; padding-left: 20px; }
.toc li { margin: 5px 0; }
.toc a { text-decoration: none; }
.toc a:hover { text-decoration: underline; color: var(--blue); }

.guide-head h1 { margin: 0 0 8px; font-size: clamp(2rem, 5vw, 3rem); letter-spacing: -0.04em; line-height: 1.1; }
.lead { margin: 0 0 16px; font-size: 1.1rem; color: var(--muted); }
.guide-cta { display: flex; flex-wrap: wrap; gap: 10px; margin: 0 0 8px; }

.guide-sec { margin-top: 46px; padding-top: 6px; scroll-margin-top: 16px; border-top: 2px solid var(--ink); }
.guide-sec h2 { display: flex; align-items: center; gap: 12px; margin: 14px 0 12px; font-size: 1.6rem; letter-spacing: -0.03em; }
.guide-sec h3 { margin: 28px 0 8px; font-size: 1.15rem; letter-spacing: -0.01em; }
.guide-sec p, .guide-sec li { line-height: 1.6; }
.num { display: inline-grid; place-items: center; flex: none; width: 36px; height: 36px; background: var(--ink); color: var(--paper); font-size: 1.05rem; }

.steps { counter-reset: step; list-style: none; margin: 14px 0; padding: 0; }
.steps > li { counter-increment: step; position: relative; padding: 4px 0 14px 46px; }
.steps > li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 3px;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  background: var(--blue);
  color: var(--paper);
  font-weight: 800;
}
.bullets { margin: 10px 0 14px; padding-left: 22px; }
.bullets li { margin: 6px 0; }

.note, .tip, .warn { margin: 16px 0; padding: 12px 16px; border-left: 5px solid var(--ink); background: var(--tile); }
.tip { border-left-color: var(--blue); }
.warn { border-left-color: var(--danger); }
.note p:last-child, .tip p:last-child, .warn p:last-child { margin-bottom: 0; }
.red { color: var(--danger); font-weight: 700; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 12px; margin: 18px 0; }
.card { display: flex; flex-direction: column; gap: 4px; padding: 14px 16px; border: 2px solid var(--ink); }
.card span { color: var(--muted); font-size: 0.95rem; }
.big-rule { margin: 14px 0; padding: 18px; background: var(--blue); color: var(--paper); text-align: center; font-size: 1.7rem; letter-spacing: -0.02em; }

.guide code { padding: 1px 6px; background: var(--tile); font-size: 0.92em; overflow-wrap: anywhere; }
kbd { padding: 0 6px; border: 1px solid #9aa1ae; border-bottom-width: 3px; background: #f6f7f9; font: 0.85em ui-monospace, Menlo, Consolas, monospace; }
.guide .table { font-size: 0.95rem; margin: 12px 0; border: 2px solid var(--ink); }
.guide .table td, .guide .table th { overflow-wrap: anywhere; }
.guide .table-wrap .table { margin: 0; border: 0; }
.legend td:first-child { white-space: nowrap; width: 150px; }

/* little look-alikes of the real buttons and panels */
.ui { display: inline-block; padding: 1px 10px; border: 2px solid var(--ink); background: var(--paper); font-weight: 700; font-size: 0.9em; line-height: 1.5; white-space: nowrap; }
.ui-primary { background: var(--blue); border-color: var(--blue); color: var(--paper); }
.ui-ghost { border-color: var(--line); }
.ui-danger { background: var(--danger); border-color: var(--danger); color: var(--paper); }
.ui-gap { margin-left: auto; }
.mock { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; margin: 14px 0; padding: 12px 14px; border: 2px solid var(--ink); background: var(--paper); }
.mock-zoom { min-width: 4ch; text-align: center; }
.mock-field { display: flex; flex-direction: column; gap: 2px; font-weight: 600; }
.mock-field small { font-size: 0.8rem; }
.mock-input { display: block; min-width: 190px; padding: 5px 9px; border: 2px solid var(--ink); font-weight: 400; color: var(--muted); }
.mock-cost { font-weight: 700; font-size: 0.9rem; }

.swatch { display: inline-block; width: 22px; height: 22px; margin-right: 4px; vertical-align: middle; }
.swatch.free { background: var(--tile); }
.swatch.sel { background: var(--blue); box-shadow: inset 0 0 0 3px var(--paper), 0 0 0 1px var(--blue); }
.swatch.c1 { background: hsl(12, 68%, 52%); }
.swatch.c2 { background: hsl(145, 68%, 42%); }
.swatch.c3 { background: hsl(215, 68%, 52%); }
.swatch.img { background: linear-gradient(135deg, #1f4fff, #e8452c); }
.swatch.hov { background: var(--tile); outline: 2px solid var(--ink); outline-offset: -2px; }

.qr-row { display: flex; flex-wrap: wrap; gap: 20px 28px; align-items: flex-start; margin: 14px 0; }
.qr-small { display: block; width: 180px; height: 180px; border: 2px solid var(--ink); }
.qr-row > div { flex: 1 1 280px; }
.big-link { margin: 4px 0 8px; font-size: 1.2rem; font-weight: 800; overflow-wrap: anywhere; }
.big-link a { color: var(--blue); }

.guide details { margin: 8px 0; padding: 0 16px; border: 2px solid var(--line); }
.guide details[open] { border-color: var(--ink); }
.guide summary { padding: 12px 0; font-weight: 700; cursor: pointer; }
.guide details p { margin: 0 0 14px; }
.guide-foot { margin-top: 46px; padding-top: 14px; border-top: 2px solid var(--ink); }

/* ---------- Password recovery / account ---------- */
.nav a.nav-user { padding: 2px 10px; border-bottom-color: transparent; }
.nav a.nav-user:hover { background: var(--ink); color: var(--paper); }
.auth-forgot { margin: -6px 0 0; font-size: 0.95rem; }
.auth-forgot a { color: var(--blue); font-weight: 700; }
.recover-notes { margin-top: 22px; color: var(--muted); }
.recover-after { margin-top: 18px; }
.account-card { margin-top: 8px; padding: 18px 20px; border: 2px solid var(--ink); }
.account-card h2 { margin: 0 0 10px; font-size: 1.25rem; letter-spacing: -0.02em; }
.account-email { overflow-wrap: anywhere; }
.account-form { margin-top: 18px; }
.account .form-msg, .auth .form-msg { margin: 0; }

/* ---------- Small screens ---------- */
@media (max-width: 640px) {
  .site-header { padding: 12px 16px; }
  .wall-app { padding: 14px 12px 280px; }
  .wall-scroll { max-height: calc(100vh - 260px); }
  .nav { gap: 6px 16px; }
  .admin { padding: 24px 12px 60px; }
  .topup { padding: 24px 16px 70px; }
  .topup-grid, .gift-grid { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .guide { grid-template-columns: minmax(0, 1fr); gap: 20px; padding: 20px 16px 70px; }
  .toc { position: static; max-height: none; }
  .legend td:first-child { white-space: normal; width: auto; }
  .mock-input { min-width: 150px; }
  .gift { padding: 24px 16px 70px; }
  .stat-percent { margin-left: 0; flex-basis: 100%; }
  .panel { padding-left: 14px; padding-right: 14px; }
  .panel-actions { width: 100%; }
  .panel-actions .btn { flex: 1; }
}