/* =========================================================
   Steam Registration — shared landing styles
   Dark fintech minimalism (Linear / Vercel / Stripe)
   ========================================================= */

:root {
  --bg: #0a0f1e;
  --surface: #161e34;
  --surface-solid: #1a2238;
  --surface-elev: #1f2944;
  --border: rgba(255, 255, 255, 0.10);
  --border-hover: rgba(255, 255, 255, 0.20);
  --border-strong: rgba(255, 255, 255, 0.26);

  --fg: #e8edf3;
  --fg-muted: #8a9bb4;
  --fg-dim: #6b7d99;

  --accent-1: #3a7ddb;
  --accent-2: #7c5ce8;
  --accent-grad: linear-gradient(135deg, #3a7ddb 0%, #7c5ce8 100%);
  --accent-glow: 0 8px 28px -8px rgba(124, 92, 232, 0.55);

  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.08);
  --success-border: rgba(16, 185, 129, 0.22);

  --manual: #60a5fa;
  --manual-bg: rgba(96, 165, 250, 0.08);
  --manual-border: rgba(96, 165, 250, 0.22);

  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.08);
  --warning-border: rgba(245, 158, 11, 0.22);

  --error: #f87171;
  --error-bg: rgba(248, 113, 113, 0.08);
  --error-border: rgba(248, 113, 113, 0.28);

  --radius-card: 18px;
  --radius-input: 12px;
  --radius-badge: 8px;

  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
*::selection { background: rgba(124, 92, 232, 0.35); color: #fff; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  font-feature-settings: "cv11", "ss01", "ss03";
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Ambient background — diffuse radial gradients (kept behind shell via z-index) */
.bg-fx {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(900px 700px at 88% -10%, rgba(124, 92, 232, 0.18), transparent 60%),
    radial-gradient(1000px 800px at -10% 110%, rgba(58, 125, 219, 0.14), transparent 60%);
}

/* Subtle noise on body — kept very faint, no blend mode */
.bg-noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.02;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Page shell */
.shell {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  /* no z-index — let normal stacking apply on top of .bg-fx (which is z-index:0 fixed) */
}

.topbar {
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  border-bottom: 1px solid var(--border);
  background: rgba(10, 15, 30, 0.5);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: -0.01em;
}
.brand-mark {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  background: var(--accent-grad);
  display: grid;
  place-items: center;
  font-size: 11px;
  font-weight: 700;
  color: white;
}
.brand-domain { color: var(--fg-dim); font-weight: 500; font-feature-settings: "tnum"; }

.topbar-meta {
  display: flex;
  gap: 14px;
  align-items: center;
  font-size: 12.5px;
  color: var(--fg-dim);
}
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.lang-switcher {
  display: inline-flex;
  gap: 2px;
  padding: 3px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.lang-btn {
  background: transparent;
  border: 0;
  color: var(--fg-dim);
  font: inherit;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 4px 9px;
  border-radius: 6px;
  cursor: pointer;
  transition: background 150ms ease, color 150ms ease;
}
.lang-btn:hover { color: var(--fg); }
.lang-btn.active {
  background: rgba(124, 92, 232, 0.18);
  color: #d6c8ff;
}
.dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.7);
  display: inline-block;
  margin-right: 7px;
  vertical-align: 1px;
}

/* Main content area */
main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 56px 24px 80px;
}

.container {
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
}

/* Page header */
.page-header {
  margin-bottom: 28px;
}
.eyebrow {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg-dim);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}
.eyebrow .pip {
  width: 6px; height: 6px; border-radius: 50%;
  background: linear-gradient(135deg, #3a7ddb, #7c5ce8);
}

h1.title {
  font-size: 30px;
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin: 0 0 10px;
  text-wrap: balance;
}
.subtitle {
  font-size: 15px;
  color: var(--fg-muted);
  margin: 0;
  max-width: 540px;
  text-wrap: pretty;
}

/* Mode select grid (Screen 1) */
.modes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}
@media (max-width: 640px) {
  .modes { grid-template-columns: 1fr; }
}

.mode-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px;
  cursor: pointer;
  transition: transform 200ms ease, border-color 200ms ease, background 200ms ease;
  text-align: left;
  color: inherit;
  font: inherit;
  overflow: hidden;
}
.mode-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  background: var(--surface-elev);
}
.mode-card:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 2px;
}

.mode-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.mode-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  display: grid; place-items: center;
  background: rgba(124, 92, 232, 0.12);
  border: 1px solid rgba(124, 92, 232, 0.25);
  color: #b8a5ff;
}
.mode-icon.manual {
  background: rgba(96, 165, 250, 0.10);
  border-color: rgba(96, 165, 250, 0.25);
  color: #93c5fd;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 22px;
  padding: 0 9px;
  border-radius: var(--radius-badge);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  white-space: nowrap;
  flex-shrink: 0;
}
.badge-rec {
  background: var(--accent-grad);
  color: white;
  box-shadow: 0 1px 0 rgba(255,255,255,0.18) inset, 0 6px 18px -8px rgba(124,92,232,0.7);
}
.badge-neutral {
  background: rgba(255,255,255,0.04);
  border-color: var(--border);
  color: var(--fg-muted);
}
.badge-success {
  background: var(--success-bg);
  border-color: var(--success-border);
  color: var(--success);
}
.badge-warn {
  background: var(--warning-bg);
  border-color: var(--warning-border);
  color: var(--warning);
}

.mode-card h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.015em;
}
.mode-card p {
  margin: 0 0 20px;
  font-size: 13.5px;
  color: var(--fg-muted);
  line-height: 1.55;
}
.mode-cta {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--fg);
}
.mode-card:hover .mode-cta {
  color: white;
}
.mode-card:hover .mode-cta .arrow {
  transform: translateX(3px);
}
.arrow { display: inline-block; transition: transform 200ms ease; }
.mode-meta {
  display: flex; gap: 12px; align-items: center;
  margin-bottom: 14px;
  font-size: 12px; color: var(--fg-dim);
}
.mode-meta .sep { width: 3px; height: 3px; border-radius: 50%; background: var(--fg-dim); opacity: .5; }

.footnote {
  font-size: 12.5px;
  color: var(--fg-dim);
  text-align: center;
  line-height: 1.55;
  margin: 20px auto 0;
  max-width: 520px;
  text-wrap: pretty;
}

/* Form card (Screens 2A/2B) */
.form-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 32px;
}
@media (max-width: 540px) {
  .form-card { padding: 22px; }
}

.form-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}
.form-head .icon {
  width: 36px; height: 36px;
  border-radius: 10px;
  display: grid; place-items: center;
  background: rgba(124, 92, 232, 0.12);
  border: 1px solid rgba(124, 92, 232, 0.25);
  color: #b8a5ff;
}
.form-head .icon.manual {
  background: rgba(96, 165, 250, 0.10);
  border-color: rgba(96, 165, 250, 0.25);
  color: #93c5fd;
}
.form-head h2 {
  margin: 0;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.form-head .sub {
  margin: 2px 0 0;
  font-size: 13px;
  color: var(--fg-muted);
}
.form-head-title { flex: 1; min-width: 0; }

/* Switch-mode chip — appears in manual form to bounce back to auto */
.switch-mode {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 32px;
  padding: 0 12px;
  background: rgba(124, 92, 232, 0.10);
  border: 1px solid rgba(124, 92, 232, 0.28);
  border-radius: 8px;
  color: #b8a5ff;
  font: inherit;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: background 150ms ease, border-color 150ms ease, transform 150ms ease;
  white-space: nowrap;
  flex-shrink: 0;
}
.switch-mode:hover {
  background: rgba(124, 92, 232, 0.18);
  border-color: rgba(124, 92, 232, 0.45);
  color: #d6c8ff;
}
.switch-mode:active { transform: translateY(1px); }
.switch-mode:disabled { opacity: 0.4; cursor: not-allowed; }
.switch-mode svg { opacity: 0.85; }
@media (max-width: 540px) {
  .switch-mode span { display: none; }
  .switch-mode { width: 32px; padding: 0; justify-content: center; }
}

.field { margin-bottom: 18px; }
.field-label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--fg-dim);
  margin-bottom: 8px;
}
.field-hint {
  margin-top: 8px;
  font-size: 12.5px;
  color: var(--fg-dim);
  line-height: 1.5;
}
.field-error {
  margin-top: 8px;
  font-size: 12.5px;
  color: var(--error);
  display: none;
  align-items: center;
  gap: 6px;
}
.field-error.show { display: flex; }
.field-success {
  margin-top: 8px;
  font-size: 12.5px;
  color: var(--success);
  display: none;
  align-items: center;
  gap: 6px;
}
.field-success.show { display: flex; }

.input {
  width: 100%;
  height: 44px;
  appearance: none;
  -webkit-appearance: none;
  background: #0a1020;
  border: 1.5px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-input);
  color: var(--fg);
  font-family: inherit;
  font-size: 14px;
  padding: 0 14px;
  outline: none;
  transition: border-color 150ms ease, background 150ms ease, box-shadow 150ms ease;
}
.input::placeholder { color: var(--fg-dim); }
.input:hover { border-color: var(--border-hover); }
.input:focus {
  border-color: var(--accent-2);
  background: #0d1428;
  box-shadow: 0 0 0 3px rgba(124, 92, 232, 0.18);
}
.input.error {
  border-color: var(--error);
  box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.12);
}
.input.success {
  border-color: var(--success);
}

.input-group {
  /* No position. The check button is placed via grid so we don't need a positioned ancestor. */
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: stretch;
  background: #0a1020;
  border: 1.5px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-input);
  transition: border-color 150ms ease, box-shadow 150ms ease;
}
.input-group:focus-within {
  border-color: var(--accent-2);
  box-shadow: 0 0 0 3px rgba(124, 92, 232, 0.18);
}
.input-group .input {
  background: transparent;
  border: none;
  height: 42px;
  padding: 0 14px;
  box-shadow: none;
}
.input-group .input:focus {
  background: transparent;
  border: none;
  box-shadow: none;
}
.input-group .check-btn {
  margin: 4px;
  height: 34px;
  padding: 0 12px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  color: var(--fg);
  font-family: inherit;
  font-size: 12.5px;
  font-weight: 500;
  cursor: pointer;
  transition: background 150ms ease, border-color 150ms ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}
.input-group .check-btn:hover { background: rgba(255,255,255,0.08); border-color: var(--border-hover); }
.input-group .check-btn[disabled] { opacity: 0.5; cursor: not-allowed; }
.input-group .check-btn.checking { color: var(--fg-muted); }
.input-group .check-btn.ok { background: var(--success-bg); border-color: var(--success-border); color: var(--success); }
.input-group .check-btn.bad { background: var(--error-bg); border-color: var(--error-border); color: var(--error); }

/* Spinner */
.spin {
  width: 12px; height: 12px;
  border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,0.18);
  border-top-color: var(--fg);
  animation: spin 700ms linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Region combobox */
.combo {
  /* No containing block — popover is positioned via JS instead. */
}
.combo-trigger {
  width: 100%;
  height: 44px;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  background: #0a1020;
  border: 1.5px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-input);
  color: var(--fg);
  font: inherit;
  font-size: 14px;
  padding: 0 14px;
  cursor: pointer;
  transition: border-color 150ms ease, background 150ms ease;
  text-align: left;
}
.combo-trigger:hover { border-color: var(--border-hover); }
.combo-trigger[aria-expanded="true"] {
  border-color: var(--accent-2);
  box-shadow: 0 0 0 3px rgba(124, 92, 232, 0.15);
}
.combo-trigger .flag { font-size: 18px; line-height: 1; margin-right: 10px; }
.combo-trigger .label {
  display: flex;
  align-items: center;
  gap: 0;
  min-width: 0;
}
.combo-trigger .currency { color: var(--fg-muted); margin-left: 8px; font-size: 13px; }
.combo-trigger .chev { color: var(--fg-dim); transition: transform 150ms ease; justify-self: end; }
.combo-trigger[aria-expanded="true"] .chev { transform: rotate(180deg); }

.combo-popover {
  /* Positioned via JS (position: fixed). Initial off-screen via display:none until opened. */
  position: fixed;
  z-index: 30;
  background: #131b2e;
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  box-shadow: 0 18px 50px -10px rgba(0,0,0,0.65), 0 0 0 1px rgba(124,92,232,0.05);
  overflow: hidden;
  display: none;
  flex-direction: column;
  max-height: 360px;
}
.combo-popover.open { display: flex; }
.combo-search {
  padding: 10px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}
.combo-search input {
  width: 100%;
  height: 32px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--fg);
  font: inherit;
  font-size: 13px;
  padding: 0 10px;
  outline: none;
}
.combo-search input:focus { border-color: var(--accent-2); }
.combo-list {
  overflow-y: auto;
  flex: 1;
  padding: 4px;
}
.combo-section-label {
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg-dim);
  font-weight: 600;
  padding: 10px 10px 6px;
}
.combo-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13.5px;
  color: var(--fg);
  user-select: none;
}
.combo-option:hover, .combo-option.active {
  background: rgba(124, 92, 232, 0.12);
}
.combo-option .flag { font-size: 18px; line-height: 1; }
.combo-option .name { flex: 1; }
.combo-option .currency { color: var(--fg-dim); font-size: 12.5px; }
.combo-option .check { opacity: 0; color: var(--accent-2); }
.combo-option.selected .check { opacity: 1; }
.combo-empty {
  padding: 24px;
  text-align: center;
  font-size: 13px;
  color: var(--fg-dim);
}

/* Locked region (cn-reg.gamefut.online) — read-only chip */
.region-locked {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 44px;
  padding: 0 14px;
  background: rgba(58, 125, 219, 0.06);
  border: 1px solid rgba(58, 125, 219, 0.18);
  border-radius: var(--radius-input);
  color: var(--fg);
  font-size: 14px;
}
.region-locked .flag { font-size: 18px; }
.region-locked .currency { color: var(--fg-muted); margin-left: auto; font-size: 13px; }
.region-locked .lock-note {
  font-size: 11px;
  color: var(--fg-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
  margin-left: 8px;
}

/* Info / warning blocks */
.info {
  display: flex;
  gap: 12px;
  padding: 14px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.025);
  font-size: 13px;
  line-height: 1.55;
  color: var(--fg-muted);
  margin-bottom: 20px;
}
.info .info-icon {
  flex-shrink: 0;
  margin-top: 1px;
  color: var(--fg-dim);
}
.info strong { color: var(--fg); font-weight: 600; }

.info.warn {
  background: var(--warning-bg);
  border-color: var(--warning-border);
  color: #f4d4a3;
}
.info.warn .info-icon { color: var(--warning); }
.info.warn strong { color: #fbe6c4; }

.info.success {
  background: var(--success-bg);
  border-color: var(--success-border);
  color: #b6f0d5;
}
.info.success .info-icon { color: var(--success); }
.info.success strong { color: #d4f5e3; }

.info ul {
  margin: 6px 0 0;
  padding-left: 16px;
}
.info li { margin: 3px 0; }
.info li.bad { color: #f3b8b8; }
.info li.bad::marker { color: var(--error); }

/* Buttons */
.btn-row {
  display: flex;
  gap: 10px;
  margin-top: 8px;
  align-items: stretch;
}
.btn {
  height: 46px;
  padding: 0 22px;
  border-radius: 12px;
  font: inherit;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: transform 150ms ease, background 150ms ease, border-color 150ms ease, box-shadow 150ms ease, opacity 150ms ease;
  border: 1px solid transparent;
  letter-spacing: -0.005em;
  white-space: nowrap;
}
.btn-primary {
  flex: 1;
  background: var(--accent-grad);
  color: white;
  box-shadow: 0 1px 0 rgba(255,255,255,0.18) inset, var(--accent-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.22) inset, 0 14px 36px -8px rgba(124, 92, 232, 0.7);
}
.btn-primary[disabled] {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
  box-shadow: 0 1px 0 rgba(255,255,255,0.18) inset;
}
.btn-ghost {
  background: rgba(255,255,255,0.03);
  border-color: var(--border);
  color: var(--fg);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.06);
  border-color: var(--border-hover);
}

/* Collapse "Как это работает?" */
.collapse {
  margin-top: 16px;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}
.collapse-trigger {
  background: none;
  border: none;
  color: var(--fg);
  font: inherit;
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0;
}
.collapse-trigger:hover { color: white; }
.collapse-trigger .chev {
  display: inline-block;
  transition: transform 150ms ease;
  color: var(--fg-dim);
}
.collapse[aria-expanded="true"] .collapse-trigger .chev { transform: rotate(90deg); }
.collapse-body {
  display: none;
  margin-top: 14px;
  font-size: 13px;
  color: var(--fg-muted);
  line-height: 1.6;
}
.collapse[aria-expanded="true"] .collapse-body { display: block; }
.collapse-body ol {
  list-style: none;
  counter-reset: step;
  padding: 0;
  margin: 0;
}
.collapse-body ol li {
  counter-increment: step;
  padding: 8px 0 8px 36px;
  position: relative;
  border-top: 1px dashed var(--border);
}
.collapse-body ol li:first-child { border-top: none; }
.collapse-body ol li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 8px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(124, 92, 232, 0.14);
  border: 1px solid rgba(124, 92, 232, 0.25);
  color: #b8a5ff;
  display: grid;
  place-items: center;
  font-size: 11px;
  font-weight: 600;
  font-feature-settings: "tnum";
}

/* Back link */
.backlink {
  background: none;
  border: none;
  color: var(--fg-muted);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0;
  margin-bottom: 18px;
}
.backlink:hover { color: var(--fg); }

/* Screen transitions */
.screen[hidden] { display: none; }

/* ====== Mobile (≤640px) ====== */
@media (max-width: 640px) {
  .topbar { padding: 0 14px; height: 52px; gap: 8px; }
  .brand { font-size: 13px; }
  .brand-domain { display: none; }
  .topbar-meta { gap: 10px; }
  .topbar-meta .status-pill > span:last-child { display: none; }
  .topbar-meta .status-pill .dot { width: 8px; height: 8px; }

  main { padding: 28px 18px 60px; }
  .page-header { margin-bottom: 22px; }
  h1.title { font-size: 26px; }
  .subtitle { font-size: 14px; }

  .modes { gap: 12px; }
  .mode-card { padding: 20px; }
  .mode-card h3 { font-size: 17px; }
  .mode-card p { font-size: 13px; margin-bottom: 14px; }
  .mode-meta { font-size: 11.5px; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
  .footnote { font-size: 12px; padding: 0 8px; }

  .form-card { padding: 22px; }
  .form-head { gap: 10px; margin-bottom: 20px; flex-wrap: wrap; }
  .form-head .icon { width: 32px; height: 32px; }
  .form-head h2 { font-size: 18px; }
  .form-head .sub { font-size: 12.5px; }

  .input { height: 42px; font-size: 14px; }
  .combo-trigger { height: 42px; font-size: 14px; padding: 0 12px; }
  .input-group .input { height: 40px; }
  .input-group .check-btn { font-size: 12px; padding: 0 10px; height: 32px; margin: 3px; }

  .btn { height: 44px; font-size: 13.5px; padding: 0 16px; }
  .btn-row { flex-direction: column; }
  .btn-row .btn-ghost { order: 2; }
  .btn-row .btn-primary { order: 1; }

  .info { padding: 12px; font-size: 12.5px; }
  .info ul { padding-left: 14px; }
}

/* Narrow (≤400px) tweaks */
@media (max-width: 400px) {
  .topbar { padding: 0 10px; }
  .brand-mark { width: 20px; height: 20px; font-size: 10px; }
  main { padding: 22px 14px 50px; }
  h1.title { font-size: 23px; }
  .form-card { padding: 18px; }
  .form-head h2 { font-size: 17px; }
  .mode-card { padding: 18px; border-radius: 14px; }
}
.footer {
  position: relative;
  z-index: 1;
  padding: 20px 28px;
  font-size: 12px;
  color: var(--fg-dim);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border);
}
.footer .links { display: flex; gap: 18px; }
.footer a { color: inherit; text-decoration: none; }
.footer a:hover { color: var(--fg); }