/* ========================================================================
   BUTTONS
   ======================================================================== */
.btn {
  --btn-bg: var(--sumi);
  --btn-fg: var(--kinari);
  --btn-bd: var(--sumi);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-2);
  padding: 14px 26px;
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: var(--tracking-wide);
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 1px solid var(--btn-bd);
  border-radius: var(--r-pill);
  position: relative;
  overflow: hidden;
  transition: transform var(--d-fast) var(--ease-out),
              background var(--d-base) var(--ease-out),
              color var(--d-base) var(--ease-out),
              box-shadow var(--d-base) var(--ease-out);
  isolation: isolate;
}

.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--beni);
  transform: translateY(101%);
  transition: transform var(--d-base) var(--ease-out);
  z-index: -1;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn:hover::before { transform: translateY(0); }
.btn:active { transform: translateY(0) scale(0.98); }

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--sumi);
  --btn-bd: var(--sumi);
}
.btn--ghost::before { background: var(--sumi); }
.btn--ghost:hover { color: var(--kinari); }

.btn--accent {
  --btn-bg: var(--beni);
  --btn-fg: var(--kinari);
  --btn-bd: var(--beni);
}
.btn--accent::before { background: var(--beni-deep); }

.btn--soft {
  --btn-bg: var(--washi-deep);
  --btn-fg: var(--sumi);
  --btn-bd: transparent;
}
.btn--soft::before { background: var(--sumi); }
.btn--soft:hover { color: var(--kinari); }

.btn--lg { padding: 18px 36px; font-size: var(--fs-base); }
.btn--sm { padding: 9px 18px; font-size: var(--fs-xs); }
.btn--icon { padding: 12px; aspect-ratio: 1; border-radius: 50%; }

.btn[disabled], .btn--disabled {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

/* Form action row: side-by-side on desktop, stacked vertically on mobile */
.form-actions {
  display: flex;
  flex-direction: row;
  gap: var(--s-3);
  margin-top: var(--s-3);
}
.form-actions__btn {
  flex: 1;
  text-align: center;
}
@media (max-width: 720px) {
  .form-actions { flex-direction: column; }
  .form-actions__btn { width: 100%; }
}

/* Ripple effect (uses ::after) */
.btn::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  width: var(--ripple-size, 0);
  height: var(--ripple-size, 0);
  top: var(--ripple-y, 50%);
  left: var(--ripple-x, 50%);
  background: rgba(255, 255, 255, 0.35);
  transform: translate(-50%, -50%) scale(0);
  pointer-events: none;
}
.btn.is-rippling::after { animation: ripple 600ms var(--ease-out); }
@keyframes ripple {
  to { transform: translate(-50%, -50%) scale(2.5); opacity: 0; }
}

/* ========================================================================
   FORMS
   ======================================================================== */
.field { display: flex; flex-direction: column; gap: var(--s-2); }
.field-row { display: grid; gap: var(--s-4); }
@media (min-width: 720px) {
  .field-row { grid-template-columns: 1fr 1fr; }
}

.label {
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--sumi-mute);
}

.input {
  width: 100%;
  padding: 14px 18px;
  background: var(--kinari);
  border: 1px solid var(--hairline);
  border-radius: var(--r-3);
  font-size: var(--fs-base);
  color: var(--sumi);
  transition: border-color var(--d-base) var(--ease-out),
              box-shadow var(--d-base) var(--ease-out),
              transform var(--d-fast) var(--ease-out);
}
.input::placeholder { color: var(--sumi-faint); }
.input:hover { border-color: var(--hairline-strong); }
.input:focus {
  outline: none;
  border-color: var(--sumi);
  box-shadow: 0 0 0 3px rgba(26, 26, 26, 0.08);
}
.input.is-invalid { border-color: var(--danger); }
.input.is-invalid:focus { box-shadow: 0 0 0 3px rgba(178, 46, 46, 0.15); }

.input-help { font-size: var(--fs-xs); color: var(--sumi-mute); }
.input-error { font-size: var(--fs-xs); color: var(--danger); }

/* ========================================================================
   PASSWORD FIELD — обёртка с кнопкой-глазиком для показа/скрытия пароля
   ======================================================================== */
.password-field {
  position: relative;
}
.password-field .input {
  padding-right: 48px; /* место под кнопку */
}
.password-toggle {
  position: absolute;
  top: 50%;
  right: 12px;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-radius: var(--r-2);
  color: var(--sumi-mute);
  cursor: pointer;
  transition: background var(--d-fast) var(--ease-out),
              color var(--d-fast) var(--ease-out);
}
.password-toggle:hover {
  background: var(--washi-deep);
  color: var(--sumi);
}
.password-toggle:focus-visible {
  outline: 2px solid var(--beni);
  outline-offset: 2px;
}
.password-toggle svg { display: block; width: 18px; height: 18px; }
/* Когда пароль показан — переключаем иконки через data-shown */
.password-toggle .icon-eye-off { display: none; }
.password-toggle[data-shown="true"] .icon-eye { display: none; }
.password-toggle[data-shown="true"] .icon-eye-off { display: block; }

/* ========================================================================
   CARDS
   ======================================================================== */
.card {
  background: var(--kinari);
  border: 1px solid var(--hairline);
  border-radius: var(--r-4);
  padding: var(--s-6);
  position: relative;
  transition: transform var(--d-base) var(--ease-out),
              box-shadow var(--d-base) var(--ease-out),
              border-color var(--d-base) var(--ease-out);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--hairline-strong);
}

.card--flat { padding: var(--s-5); }
.card--paper {
  background:
    linear-gradient(135deg, transparent 0, transparent 49%, rgba(0,0,0,0.025) 50%, transparent 51%) 0 0/8px 8px,
    var(--kinari);
}

.card-corner-mark {
  position: absolute;
  top: var(--s-4);
  right: var(--s-4);
  width: 8px; height: 8px;
  border-top: 2px solid var(--beni);
  border-right: 2px solid var(--beni);
}

/* ========================================================================
   BADGES + CHIPS
   ======================================================================== */
.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  padding: 4px 12px;
  background: var(--washi-deep);
  border-radius: var(--r-pill);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-wide);
  color: var(--sumi-soft);
}
.chip--accent { background: var(--beni-tint); color: var(--beni-deep); }
.chip--ink { background: var(--sumi); color: var(--kinari); }
.chip--outline { background: transparent; border: 1px solid var(--hairline-strong); }

.badge-streak {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--beni);
  color: var(--kinari);
  border-radius: var(--r-pill);
  font-weight: 700;
  font-size: var(--fs-sm);
  box-shadow: var(--shadow-sm);
}
.badge-streak::before {
  content: "";
  display: inline-block;
  width: 14px;
  height: 14px;
  background-color: currentColor;
  -webkit-mask: var(--icon-flame) center/contain no-repeat;
          mask: var(--icon-flame) center/contain no-repeat;
  flex-shrink: 0;
}

/* ----- Reusable inline icons (mask-image, picks up `color`) -----
   Used to replace emoji in places where we want consistent monochrome icons */
:root {
  --icon-flame: url("data:image/svg+xml;utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='black' stroke='black' stroke-width='1' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M8.5 14.5A2.5 2.5 0 0 0 11 12c0-1.38-.5-2-1-3-1.072-2.143-.224-4.054 2-6 .5 2.5 2 4.9 4 6.5 2 1.6 3 3.5 3 5.5a7 7 0 1 1-14 0c0-1.153.433-2.294 1-3a2.5 2.5 0 0 0 2.5 2.5z'/%3E%3C/svg%3E");
}

.icon {
  display: inline-block;
  width: 1em;
  height: 1em;
  vertical-align: -0.15em;
  background-color: currentColor;
  -webkit-mask: center/contain no-repeat;
          mask: center/contain no-repeat;
  flex-shrink: 0;
}
.icon--flame {
  -webkit-mask-image: var(--icon-flame);
          mask-image: var(--icon-flame);
  color: var(--beni);
}

/* ========================================================================
   HANKO STAMP — for achievements + branded marks
   ======================================================================== */
.hanko {
  --hanko-size: 64px;
  width: var(--hanko-size);
  height: var(--hanko-size);
  background: var(--beni);
  color: var(--kinari);
  border-radius: 6px;
  display: grid;
  place-items: center;
  font-family: var(--font-display-jp);
  font-weight: 400;
  font-size: calc(var(--hanko-size) * 0.4);
  position: relative;
  transform: rotate(-4deg);
  box-shadow:
    inset 0 0 0 3px var(--beni),
    inset 0 0 0 5px var(--beni-tint),
    inset 0 0 0 6px var(--beni);
  filter: drop-shadow(0 2px 0 rgba(159, 27, 27, 0.3));
}
.hanko::after {
  content: "";
  position: absolute; inset: 0;
  border-radius: inherit;
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='80' height='80'><filter id='n'><feTurbulence baseFrequency='0.9' numOctaves='2'/><feColorMatrix values='0 0 0 0 1, 0 0 0 0 1, 0 0 0 0 1, 0 0 0 0.5 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  mix-blend-mode: screen;
  opacity: 0.25;
  border-radius: inherit;
}
.hanko--sm { --hanko-size: 40px; }
.hanko--lg { --hanko-size: 96px; }

/* ========================================================================
   PROGRESS
   ======================================================================== */
.bar {
  height: 6px;
  background: var(--washi-deep);
  border-radius: var(--r-pill);
  overflow: hidden;
  position: relative;
}
.bar > .bar__fill {
  display: block;
  height: 100%;
  background: var(--sumi);
  border-radius: inherit;
  transition: width var(--d-slow) var(--ease-out);
  position: relative;
}
.bar > .bar__fill::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.4) 50%, transparent 100%);
  animation: shimmer 2.4s infinite;
}
.bar--accent .bar__fill { background: var(--beni); }

/* Large progress bar — used in profile world progress.
   Plain track + solid accent-red fill so the percentage is unmistakable. */
.bar--lg {
  height: 12px !important;
  border-radius: var(--r-pill);
  background: var(--washi-deep) !important;
  overflow: hidden;
  position: relative;
}
.bar--lg .bar__fill {
  display: block !important;
  height: 100% !important;
  background: var(--beni) !important;
  border-radius: var(--r-pill);
  position: relative;
  transition: width var(--d-slow) var(--ease-out);
  box-shadow: none !important;
}
/* Remove the parent .bar > .bar__fill::after shimmer for the lg variant
   so the fill stays visually solid and the % is easy to read. */
.bar--lg .bar__fill::after { display: none !important; }

@keyframes shimmer {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.xp-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
  padding: 8px 14px 8px 8px;
  background: var(--kinari);
  border: 1px solid var(--hairline);
  border-radius: var(--r-pill);
}
.xp-pill__lvl {
  display: grid; place-items: center;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--sumi);
  color: var(--kinari);
  font-weight: 800;
  font-size: var(--fs-xs);
  font-family: var(--font-display);
}
.xp-pill__bar {
  width: 80px;
  height: 4px;
  background: var(--washi-deep);
  border-radius: var(--r-pill);
  overflow: hidden;
}
.xp-pill__bar > span {
  display: block; height: 100%;
  background: var(--beni);
  transition: width var(--d-slow) var(--ease-out);
}
.xp-pill__num {
  font-size: var(--fs-xs);
  color: var(--sumi-mute);
  font-weight: 600;
}

/* ========================================================================
   FLASH / TOAST
   ======================================================================== */
.flash-stack {
  position: fixed;
  top: calc(var(--header-h) + 16px);
  right: 16px;
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
  pointer-events: none;
}
.flash {
  pointer-events: auto;
  padding: 14px 20px;
  background: var(--kinari);
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--sumi);
  border-radius: var(--r-2);
  box-shadow: var(--shadow-md);
  max-width: 360px;
  animation: flash-in 320ms var(--ease-spring) backwards;
}
.flash--success { border-left-color: var(--success); }
.flash--error   { border-left-color: var(--danger); }
.flash--info    { border-left-color: var(--indigo); }

@keyframes flash-in {
  from { opacity: 0; transform: translateX(40px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ========================================================================
   HEADER
   ======================================================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  background: rgba(245, 241, 232, 0.92);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid var(--hairline);
  height: var(--header-h);
  transition: box-shadow var(--d-base) var(--ease-out),
              background var(--d-base) var(--ease-out);
}
.header.is-scrolled {
  background: rgba(245, 241, 232, 0.96);
  box-shadow: 0 4px 24px rgba(26, 26, 26, 0.08);
}
.header__row {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-5);
}
.brand {
  display: inline-flex;
  align-items: baseline;
  gap: var(--s-3);
  text-decoration: none;
  color: var(--sumi);
}
.brand__kanji {
  font-family: var(--font-display-jp);
  font-weight: 400;
  font-size: 28px;
  letter-spacing: -0.02em;
  line-height: 1;
}
.brand__romaji {
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--sumi-mute);
  font-weight: 600;
}

.nav { display: flex; gap: var(--s-5); }
.nav__link {
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--sumi-soft);
  position: relative;
  padding: 4px 2px;
  transition: color var(--d-base) var(--ease-out);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -4px;
  height: 1px;
  background: var(--sumi);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--d-base) var(--ease-out);
}
.nav__link:hover { color: var(--sumi); }
.nav__link:hover::after { transform: scaleX(1); transform-origin: left; }
.nav__link.is-active { color: var(--sumi); }
.nav__link.is-active::after { transform: scaleX(1); }

.header__tools { display: flex; align-items: center; gap: var(--s-3); }

/* === MOBILE NAVIGATION (hamburger) === */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: var(--r-2);
  background: transparent;
  border: none;
  cursor: pointer;
  flex-shrink: 0;
  transition: background var(--d-base) var(--ease-out);
}
.nav-toggle:hover { background: var(--washi-deep); }
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--sumi);
  border-radius: 2px;
  transition: transform var(--d-base) var(--ease-spring),
              opacity var(--d-fast) var(--ease-out),
              width var(--d-base) var(--ease-out);
}
.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; width: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav__link--mobile-only { display: none; }

/* ========================================================================
   HAMBURGER NAV — действует на мобильных, планшетах и узких десктопах (до 1199px).
   Расширили с 1023 до 1199, потому что на 1024–1175 десктоп-навбар (6 ссылок
   + бренд + стрик + XP-бар + Выход) физически не помещается и элементы
   налезают друг на друга.
   ======================================================================== */
@media (max-width: 1199px) {
  .nav-toggle { display: flex; }

  .nav {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    padding: 0 var(--s-5);
    background: rgba(245, 241, 232, 0.98);
    backdrop-filter: saturate(180%) blur(18px);
    -webkit-backdrop-filter: saturate(180%) blur(18px);
    border-bottom: 1px solid var(--hairline);
    box-shadow: 0 8px 24px rgba(26, 26, 26, 0.1);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--d-slow) var(--ease-out);
  }
  .nav.is-open { max-height: 500px; }

  .nav__link {
    padding: var(--s-4) 0;
    border-bottom: 1px solid var(--hairline);
    font-size: var(--fs-base);
    font-weight: 600;
  }
  .nav__link:last-child { border-bottom: none; }
  .nav__link::after { display: none; }
  .nav__link--mobile-only { display: block; color: var(--beni); }
}

/* === Только мобильные (до 767px) — самые жёсткие компактные стили === */
@media (max-width: 767px) {
  .brand__romaji { display: none; }
  .brand__kanji-rest { display: none; }
  .badge-streak { display: none; }
  .xp-pill__bar { display: none; }
  .xp-pill__num { display: none; }
  .xp-pill { padding: 4px 8px 4px 4px; gap: 6px; }
  .xp-pill__lvl { width: 24px; height: 24px; font-size: 11px; }
  .header__logout { display: none; }
  .header__row { gap: var(--s-3); }

  .container-page { padding-left: 28px; padding-right: 28px; }
  .container, .container-wide, .container-narrow { padding-left: 28px; padding-right: 28px; }
  .header__row { padding-left: 8px; padding-right: 8px; }
  .footer__grid { padding-left: 4px; padding-right: 4px; }
}

/* === Планшет и узкий десктоп (768–1199) — компактные tools,
       но romaji и 先生 остаются === */
@media (min-width: 768px) and (max-width: 1199px) {
  .xp-pill__bar { display: none; }      /* шкала XP занимает слишком много */
  .header__logout .header__logout-text { display: none; } /* «Выйти» → иконка */
  .header__row { gap: var(--s-4); }
}

/* ========================================================================
   FOOTER
   ======================================================================== */
.footer {
  margin-top: var(--s-10);
  padding: var(--s-7) 0 var(--s-6);
  border-top: 1px solid var(--hairline);
  background: var(--washi-deep);
  color: var(--sumi-mute);
  font-size: var(--fs-sm);
}
.footer__grid {
  display: grid;
  gap: var(--s-6);
  grid-template-columns: 1fr;
}
@media (min-width: 720px) {
  .footer__grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
}
.footer__brand-line {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-md);
  letter-spacing: -0.02em;
  color: var(--sumi);
}
.footer__col-h {
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  font-weight: 700;
  color: var(--sumi);
  margin-bottom: var(--s-3);
}
.footer__col a { display: block; padding: 4px 0; transition: color var(--d-base); }
.footer__col a:hover { color: var(--beni); }