:root {
  --kh-bg:            #0f1117;
  --kh-surface:       #161b27;
  --kh-surface-alt:   #1a2234;
  --kh-border:        #1e2a3a;
  --kh-border-strong: #253347;
  --kh-primary:       #f59e0b;
  --kh-primary-dark:  #d97706;
  --kh-ink:           #f8fafc;
  --kh-ink-soft:      #cbd5e1;
  --kh-ink-muted:     #94a3b8;
  --kh-success:       #10b981;
  --kh-success-dark:  #059669;
  --kh-warning:       #f59e0b;
  --kh-danger:        #f87171;
}

body.register-page {
  margin: 0;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  padding-bottom: env(safe-area-inset-bottom);
  background:
    radial-gradient(ellipse at top left,    rgba(245, 158, 11, 0.12), transparent 40%),
    radial-gradient(ellipse at bottom right, rgba(245, 158, 11, 0.06), transparent 40%),
    var(--kh-bg);
  color: var(--kh-ink);
}

.register-shell {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  padding: 32px 16px;
}

.registration-card {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  border: 1px solid var(--kh-border-strong);
  border-radius: 24px;
  background: var(--kh-surface);
  overflow: hidden;
  box-shadow:
    0 0 0 1px rgba(255,255,255,.03),
    0 32px 80px rgba(0, 0, 0, 0.5);
}

.registration-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.80fr) minmax(0, 1.20fr);
}

.desktop-only { display: block; }
.mobile-only  { display: none; }

/* ── Aside ── */
.registration-aside {
  position: relative;
  padding: 42px 34px;
  background:
    radial-gradient(ellipse at top right, rgba(245,158,11,.15), transparent 36%),
    radial-gradient(ellipse at bottom left, rgba(245,158,11,.07), transparent 40%),
    linear-gradient(160deg, #0d1320 0%, #111827 100%);
  color: #fff;
  border-right: 1px solid var(--kh-border-strong);
}

.registration-aside::after {
  content: "";
  position: absolute;
  right: -50px;
  bottom: 20px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,.08), transparent 70%);
  pointer-events: none;
}

.aside-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.15);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: rgba(255,255,255,.9);
}

.aside-title {
  margin: 24px 0 14px;
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  line-height: 1.05;
  font-weight: 800;
  color: #ffffff;
}

.aside-text {
  margin: 0;
  max-width: 32rem;
  font-size: 1rem;
  line-height: 1.75;
  color: rgba(255,255,255,.72);
}

.aside-panel {
  margin-top: 32px;
  padding: 22px;
  border-radius: 16px;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255,255,255,.1);
}

.aside-panel-title {
  margin-bottom: 16px;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(255,255,255,.5);
}

.aside-point {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}
.aside-point + .aside-point { margin-top: 16px; }

.aside-point strong {
  display: block;
  margin-bottom: 3px;
  color: #ffffff;
  font-size: .95rem;
}

.aside-point div div {
  font-size: .88rem;
  line-height: 1.5;
  color: rgba(255,255,255,.6);
}

.aside-point-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.12);
  color: rgba(255,255,255,.9);
  font-size: .95rem;
}

.aside-details {
  margin-top: 20px;
  border-radius: 16px;
  background: rgba(0,0,0,.2);
  border: 1px solid rgba(255,255,255,.1);
  overflow: hidden;
}

.aside-details-summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: rgba(255,255,255,.6);
}
.aside-details-summary::-webkit-details-marker { display: none; }
.aside-details-summary i { transition: transform .2s; }
.aside-details[open] .aside-details-summary i { transform: rotate(180deg); }

.aside-details-body { padding: 0 18px 18px; }
.aside-details-body .aside-point + .aside-point { margin-top: 14px; }

/* ── Main ── */
.registration-main {
  padding: 42px 38px 34px;
  background: var(--kh-surface);
}

.registration-header { margin-bottom: 24px; }

.registration-header-top {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.registration-kicker {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(245,158,11,.12);
  border: 1px solid rgba(245,158,11,.22);
  color: #fbbf24;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.registration-title {
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  line-height: 1.08;
  font-weight: 800;
  color: var(--kh-ink);
}

.registration-text {
  margin: 10px 0 0;
  max-width: 42rem;
  color: var(--kh-ink-muted);
  font-size: .97rem;
  line-height: 1.65;
}

/* ── Step nav ── */
#steps-nav { gap: 8px; }
#steps-nav .nav-item { flex: 1 1 0; }

#steps-nav .nav-link {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 16px;
  border-radius: 14px;
  border: 1px solid var(--kh-border-strong);
  background: var(--kh-surface-alt);
  color: var(--kh-ink-muted);
  font-weight: 700;
  font-size: .92rem;
  transition: background .2s, color .2s, border-color .2s, box-shadow .2s;
}

#steps-nav .nav-link.active {
  background: linear-gradient(135deg, var(--kh-primary) 0%, var(--kh-primary-dark) 100%);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 8px 24px rgba(245,158,11,.3);
}

#steps-nav .nav-link.disabled { opacity: .4; }

/* ── Step content ── */
.step-content         { display: none; }
.step-content.active  { display: block; }

.step-card {
  padding: 26px;
  border-radius: 18px;
  border: 1px solid var(--kh-border-strong);
  background: var(--kh-surface-alt);
  box-shadow: 0 4px 20px rgba(0,0,0,.25);
}
.step-card + .step-card { margin-top: 16px; }

.step-callout {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.step-callout h5 {
  margin: 2px 0 10px;
  font-size: 1rem;
  font-weight: 800;
  color: var(--kh-ink);
}

.step-callout ol {
  color: var(--kh-ink-muted);
  line-height: 1.75;
  padding-left: 1.2rem;
}

.step-callout-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: rgba(245,158,11,.12);
  border: 1px solid rgba(245,158,11,.2);
  color: var(--kh-primary);
  font-size: 1.25rem;
}

.step-hint {
  margin: 8px 0 0;
  font-size: .88rem;
  color: var(--kh-ink-muted);
}

/* ── Form ── */
.field-grid      { display: grid; gap: 16px; }
.field-grid-two  { grid-template-columns: repeat(2, minmax(0,1fr)); }

.form-group {
  position: relative;
  margin-bottom: 18px;
}
.form-group:last-child { margin-bottom: 0; }

.form-group label {
  display: block;
  margin-bottom: 7px;
  font-size: .88rem;
  font-weight: 700;
  color: var(--kh-ink-soft);
  letter-spacing: .02em;
}

.form-control,
select.form-control,
textarea.form-control {
  height: 52px;
  border-radius: 12px;
  border: 1px solid var(--kh-border-strong);
  background: var(--kh-surface);
  color: var(--kh-ink);
  font-size: .97rem;
  padding: 0 14px;
  box-shadow: inset 0 1px 3px rgba(0,0,0,.2);
  transition: border-color .2s, box-shadow .2s;
  outline: none;
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
}

.form-control::placeholder { color: var(--kh-ink-muted); }

.form-control:focus,
select.form-control:focus,
textarea.form-control:focus {
  border-color: var(--kh-primary);
  box-shadow: 0 0 0 3px rgba(245,158,11,.18);
}

.form-control-lg {
  height: 56px;
  padding: 0 16px;
  font-size: 1.02rem;
}

.code-input {
  font-size: 1.3rem;
  letter-spacing: .38em;
  text-align: center;
  font-weight: 700;
}

#code-check-icon,
#phone-check-icon,
#pw-match-icon {
  position: absolute;
  right: 14px;
  top: 44px;
  font-size: 1rem;
  pointer-events: none;
  z-index: 2;
}

.form-control.is-valid  { border-color: var(--kh-success); background-image: none; }
.form-control.is-invalid { border-color: #f43f5e; background-image: none; }

.invalid-feedback {
  display: none;
  margin-top: 7px;
  font-size: .83rem;
  font-weight: 600;
  color: var(--kh-danger);
}
.is-invalid + .invalid-feedback,
.form-control.is-invalid ~ .invalid-feedback { display: block; }

.field-note {
  margin-top: 7px;
  font-size: .8rem;
  color: var(--kh-ink-muted);
}

/* ── Buttons ── */
.action-btn {
  height: 52px;
  border: none;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: .97rem;
  font-weight: 800;
  letter-spacing: .01em;
  line-height: 1;
  text-align: center;
  cursor: pointer;
  transition: opacity .2s, transform .15s, box-shadow .2s;
  width: 100%;
}

.btn-primary.action-btn,
#submit-btn.btn-primary {
  background: linear-gradient(135deg, var(--kh-primary) 0%, var(--kh-primary-dark) 100%);
  color: #0f1117;
  box-shadow: 0 8px 24px rgba(245,158,11,.3);
}

.btn-primary.action-btn:hover,
#submit-btn.btn-primary:hover {
  opacity: .9;
  transform: translateY(-1px);
  box-shadow: 0 12px 30px rgba(245,158,11,.35);
}

.btn-success.action-btn {
  background: linear-gradient(135deg, var(--kh-success) 0%, var(--kh-success-dark) 100%);
  color: #fff;
  box-shadow: 0 8px 24px rgba(16,185,129,.25);
}

.btn-success.action-btn:hover { opacity: .9; transform: translateY(-1px); }

.btn-outline-secondary.action-btn {
  background: transparent;
  border: 1px solid var(--kh-border-strong);
  color: var(--kh-ink-soft);
}
.btn-outline-secondary.action-btn:hover {
  background: var(--kh-surface);
  color: var(--kh-ink);
}

.action-btn:active { transform: scale(.98) !important; }
.action-btn i      { margin-right: 8px; line-height: 1; }

.register-link-btn {
  color: var(--kh-primary);
  font-weight: 700;
  text-decoration: none;
  font-size: .88rem;
}
.register-link-btn:hover { opacity: .8; }

.btn-link {
  background: none;
  border: none;
  padding: 0 8px;
  color: var(--kh-ink-soft);
  font-size: .88rem;
  cursor: pointer;
  text-decoration: none;
}
.btn-link.register-link-btn { color: var(--kh-primary); }

/* ── Date input ── */
input[type="date"].form-control {
  display: flex;
  align-items: center;
  min-height: 52px;
  color-scheme: dark;
}

/* ── Toast ── */
.toast-anchor {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 1080;
}

/* ── Club autocomplete ── */
.club-autocomplete { position: relative; }

.club-autocomplete-list {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  z-index: 30;
  display: none;
  max-height: 280px;
  overflow-y: auto;
  border: 1px solid var(--kh-border-strong);
  border-radius: 14px;
  background: var(--kh-surface);
  box-shadow: 0 16px 40px rgba(0,0,0,.4);
}

.club-autocomplete-list.active { display: block; }

.club-option,
.club-empty { padding: 11px 14px; }

.club-option { cursor: pointer; }

.club-option + .club-option { border-top: 1px solid var(--kh-border); }

.club-option:hover,
.club-option.active { background: rgba(245,158,11,.08); }

.club-option-title {
  font-weight: 700;
  color: var(--kh-ink);
  line-height: 1.3;
}

.club-empty {
  color: var(--kh-ink-muted);
  font-size: .9rem;
}

.club-create-trigger {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-top: 1px solid var(--kh-border);
  color: var(--kh-primary);
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s;
}
.club-create-trigger:hover { background: rgba(245,158,11,.08); }

.club-create-form {
  padding: 12px 14px;
  border-top: 1px solid var(--kh-border);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.club-create-form__input {
  height: 38px;
  padding: 0 12px;
  border-radius: 10px;
  border: 1px solid var(--kh-border-strong);
  background: var(--kh-surface-alt);
  color: var(--kh-ink);
  font-size: .88rem;
  outline: none;
  transition: border-color .2s;
}
.club-create-form__input:focus { border-color: var(--kh-primary); }

.club-create-form__error {
  font-size: .82rem;
  color: var(--kh-danger);
}

.club-create-form__btn {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 10px;
  border: none;
  background: var(--kh-primary);
  color: #fff;
  font-size: .85rem;
  font-weight: 700;
  cursor: pointer;
  transition: background .2s;
}
.club-create-form__btn:hover { background: var(--kh-primary-dark); }
.club-create-form__btn:disabled { opacity: .6; cursor: default; }

/* ─── Responsive ─────────────────────────────── */

/* Tablet: stack layout */
@media (max-width: 991.98px) {
  .register-shell { padding: 18px 14px; }
  .registration-layout { display: flex; flex-direction: column; }
  .registration-main  { order: 1; padding: 26px 22px 22px; }
  .registration-aside { order: 2; padding: 24px 22px; }
  .desktop-only { display: none; }
  .mobile-only  { display: block; }
  .registration-title { font-size: clamp(1.5rem, 4vw, 2rem); }
  .aside-title        { font-size: clamp(1.3rem, 4vw, 1.8rem); }
}

/* Large phone */
@media (max-width: 767.98px) {
  .registration-card   { border-radius: 16px; }
  .registration-aside  { padding: 18px 16px; }
  .registration-main   { padding: 18px 16px 16px; }
  .registration-header { margin-bottom: 14px; }
  .registration-header-top { margin-bottom: 8px; }
  .registration-kicker { font-size: 10px; padding: 5px 10px; }
  .registration-title  { font-size: 1.45rem; }
  .registration-text   { font-size: .88rem; line-height: 1.55; margin-top: 6px; }
  .aside-title  { font-size: 1.3rem; margin: 14px 0 8px; }
  .aside-text   { font-size: .85rem; line-height: 1.6; }
  .aside-badge  { font-size: 10px; padding: 6px 10px; }

  #steps-nav { gap: 5px; margin-bottom: 14px !important; }
  #steps-nav .nav-link {
    padding: 10px 8px;
    border-radius: 11px;
    font-size: .8rem;
    gap: 5px;
  }

  .step-card      { padding: 16px; border-radius: 14px; }
  .step-card + .step-card { margin-top: 12px; }
  .step-callout   { gap: 12px; }
  .step-callout h5 { font-size: .95rem; margin-bottom: 8px; }
  .step-callout ol { font-size: .88rem; }

  .field-grid-two { grid-template-columns: 1fr; }
  .form-group     { margin-bottom: 14px; }
  .form-group label { font-size: .82rem; margin-bottom: 5px; }

  .form-control,
  .form-control-lg,
  select.form-control {
    height: 48px;
    border-radius: 11px;
    font-size: 16px; /* prevents iOS auto-zoom */
  }

  .action-btn   { height: 48px; border-radius: 13px; font-size: .92rem; }
  .code-input   { letter-spacing: .25em; font-size: 1.05rem; }
}

/* Small phone */
@media (max-width: 575.98px) {
  .register-shell  { padding: 10px 6px; }
  .registration-card { border-radius: 14px; }
  .registration-aside { padding: 14px 14px; }
  .registration-main  { padding: 14px 14px 14px; }

  .registration-title { font-size: 1.25rem; }
  .registration-text  { font-size: .84rem; }
  .aside-title  { font-size: 1.15rem; margin: 10px 0 6px; }
  .aside-text   { font-size: .82rem; }

  /* Step nav — icons only, label via tooltip */
  #steps-nav .nav-link span { display: none; }
  #steps-nav .nav-link {
    padding: 11px;
    font-size: .95rem;
    border-radius: 10px;
  }

  .step-card   { padding: 13px; border-radius: 12px; }
  .step-callout { grid-template-columns: 1fr; gap: 10px; }
  .step-callout-icon { width: 40px; height: 40px; border-radius: 11px; }
  .step-callout h5   { font-size: .88rem; margin-bottom: 6px; }

  .form-group   { margin-bottom: 12px; }
  .aside-panel  { margin-top: 14px; padding: 14px; }

  .action-btn,
  .form-control,
  .form-control-lg {
    height: 46px;
    font-size: 16px;
    padding-left: 12px;
    padding-right: 12px;
    border-radius: 10px;
  }
  .code-input { letter-spacing: .18em; font-size: .98rem; }
}

/* Very small phone (≤ 390px) */
@media (max-width: 390px) {
  .register-shell     { padding: 8px 4px; }
  .registration-aside { padding: 12px; }
  .registration-main  { padding: 12px; }
  .registration-title { font-size: 1.1rem; }
  .aside-title        { font-size: 1.05rem; }
  .registration-kicker { display: none; }
  .action-btn,
  .form-control,
  .form-control-lg    { height: 44px; border-radius: 9px; }
}

/* ══════════════════════════════════════════════
   LIGHT THEME
   ══════════════════════════════════════════════ */
[data-theme="light"] {
  --kh-bg:            #f1f5f9;
  --kh-surface:       #ffffff;
  --kh-surface-alt:   #f8fafc;
  --kh-border:        #e2e8f0;
  --kh-border-strong: #cbd5e1;
  --kh-ink:           #0f172a;
  --kh-ink-soft:      #334155;
  --kh-ink-muted:     #64748b;
}

[data-theme="light"] body.register-page {
  background:
    radial-gradient(ellipse at top left,    rgba(245,158,11,.08), transparent 40%),
    radial-gradient(ellipse at bottom right, rgba(245,158,11,.04), transparent 40%),
    var(--kh-bg);
}

[data-theme="light"] .registration-card {
  background: var(--kh-surface);
  border-color: var(--kh-border);
  box-shadow: 0 8px 40px rgba(15,23,42,.09);
}

[data-theme="light"] .registration-main {
  background: var(--kh-surface);
}

[data-theme="light"] .step-card {
  background: var(--kh-surface-alt);
  border-color: var(--kh-border);
  box-shadow: 0 2px 8px rgba(15,23,42,.05);
}

[data-theme="light"] .form-control,
[data-theme="light"] select.form-control,
[data-theme="light"] textarea.form-control {
  background: var(--kh-surface);
  border-color: var(--kh-border);
  color: var(--kh-ink);
  box-shadow: inset 0 1px 2px rgba(15,23,42,.05);
}

[data-theme="light"] .form-control::placeholder {
  color: var(--kh-ink-muted);
}

[data-theme="light"] .form-control:focus,
[data-theme="light"] select.form-control:focus {
  border-color: var(--kh-primary);
  box-shadow: 0 0 0 3px rgba(245,158,11,.15);
}

[data-theme="light"] #steps-nav .nav-link {
  background: var(--kh-surface);
  border-color: var(--kh-border);
  color: var(--kh-ink-muted);
}

[data-theme="light"] #steps-nav .nav-link.active {
  color: #0f1117;
}

[data-theme="light"] .club-autocomplete-list {
  background: var(--kh-surface);
  border-color: var(--kh-border);
  box-shadow: 0 8px 24px rgba(15,23,42,.1);
}

[data-theme="light"] .club-option:hover,
[data-theme="light"] .club-option.active {
  background: rgba(245,158,11,.08);
}

[data-theme="light"] input[type="date"].form-control {
  color-scheme: light;
}

/* Toggle button */
.theme-toggle-btn {
  position: fixed;
  top: 14px;
  right: 14px;
  z-index: 200;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--kh-border-strong);
  background: var(--kh-surface);
  color: var(--kh-ink-soft);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .9rem;
  transition: background .2s, color .2s, border-color .2s, box-shadow .2s;
  box-shadow: 0 2px 8px rgba(0,0,0,.15);
}
.theme-toggle-btn:hover {
  color: var(--kh-primary);
  border-color: var(--kh-primary);
}

/* ── Telegram helper ── */
.telegram-helper-card {
  margin-top: 16px;
  padding: 16px;
  border-radius: 14px;
  border: 1px solid var(--kh-border-strong);
  background: var(--kh-surface-alt);
}

.telegram-helper-card small {
  display: block;
  font-size: .82rem;
  color: var(--kh-ink-muted);
  line-height: 1.5;
  margin-bottom: 12px;
}

.telegram-helper-btns {
  display: flex;
  gap: 8px;
}

.telegram-helper-btns a {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 12px;
  border-radius: 10px;
  border: 1px solid var(--kh-border-strong);
  background: var(--kh-surface);
  color: var(--kh-ink-soft);
  font-size: .85rem;
  font-weight: 600;
  text-decoration: none;
  transition: border-color .2s, color .2s, background .2s;
}

.telegram-helper-btns a:hover {
  border-color: #29b6f6;
  color: #29b6f6;
  background: rgba(41,182,246,.07);
  text-decoration: none;
}