/* =========================================================
   AUTH MODAL — modal version + showcase
   ========================================================= */
.auth-frame {
  position: relative;
  border-radius: var(--gt-r-2xl);
  overflow: hidden;
  background: var(--gt-mesh);
  border: 1px solid rgba(20,20,26,0.06);
  box-shadow: var(--gt-depth-lg);
  min-height: 760px;
  isolation: isolate;
}
.auth-frame .proto-chrome { z-index: 5; position: relative; }

/* fake landing in background */
.auth-bg {
  position: absolute; inset: 36px 0 0 0;
  padding: 40px 56px;
  display: flex; flex-direction: column; gap: 18px;
  z-index: 1;
  filter: blur(2px) saturate(0.85);
  opacity: 0.55;
  pointer-events: none;
}
.auth-bg .row {
  height: 24px; background: rgba(20,20,26,0.10);
  border-radius: 6px; max-width: 60%;
}
.auth-bg .row.short { max-width: 40%; }
.auth-bg .row.title { height: 64px; max-width: 80%; }
.auth-bg .grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px;
  margin-top: 28px;
}
.auth-bg .card {
  height: 220px; background: rgba(20,20,26,0.06);
  border-radius: 18px;
}

/* dim overlay */
.auth-overlay {
  position: absolute; inset: 36px 0 0 0;
  background: rgba(20,23,50,0.34);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 6;
}

/* modal */
.auth-modal {
  position: absolute; left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  z-index: 7;
  width: 440px;
  max-width: calc(100% - 48px);
  padding: 32px 32px 26px;
  background: var(--gt-glass);
  backdrop-filter: saturate(180%) blur(36px);
  -webkit-backdrop-filter: saturate(180%) blur(36px);
  border: 1px solid var(--gt-glass-stroke);
  border-radius: var(--gt-r-2xl);
  box-shadow: var(--gt-depth-float);
  animation: authPop 320ms var(--gt-ease-bouncy) both;
}
@keyframes authPop {
  from { opacity: 0; transform: translate(-50%, -50%) scale(0.94); }
  to   { opacity: 1; transform: translate(-50%, -50%) scale(1); }
}

.auth-modal .close {
  position: absolute; top: 16px; right: 16px;
  width: 32px; height: 32px;
  background: rgba(255,255,255,0.6);
  border: 0; cursor: pointer; border-radius: 99px;
  color: var(--gt-ink-secondary);
  display: flex; align-items: center; justify-content: center;
}
.auth-modal .close svg { width: 14px; height: 14px; }
.auth-modal .close:hover { background: #fff; color: var(--gt-ink); }
[data-theme="dark"] .auth-modal .close { background: rgba(255,255,255,0.06); color: rgba(244,244,240,0.6); }

/* "drawing" mark — draws once when modal opens, then gently floats */
.auth-modal .mark-anim {
  display: flex; justify-content: center;
  margin-bottom: 16px;
  color: var(--gt-brand);
}
.auth-modal .mark-anim svg {
  width: 56px; height: 56px;
  transform-origin: 50% 50%;
  /* парение запускается после завершения прорисовки (1400ms draw + 200ms delay) */
  animation: authFloat 4.2s cubic-bezier(0.45, 0, 0.55, 1) 1700ms infinite;
  will-change: transform;
}
.auth-modal .mark-anim .draw-path {
  stroke-dasharray: 360;
  stroke-dashoffset: 360;
  animation: authDrawMark 1400ms cubic-bezier(0.65, 0, 0.35, 1) 200ms forwards;
}
@keyframes authDrawMark {
  to { stroke-dashoffset: 0; }
}
@keyframes authFloat {
  0%   { transform: translateY(0)    rotate(0); }
  50%  { transform: translateY(-6px) rotate(1.5deg); }
  100% { transform: translateY(0)    rotate(0); }
}
@media (prefers-reduced-motion: reduce) {
  .auth-modal .mark-anim svg { animation: none; }
}

.auth-modal h2 {
  margin: 0 0 8px;
  text-align: center;
  font-size: 30px; font-weight: 900; letter-spacing: -0.03em; line-height: 1.05;
}
.auth-modal h2 em {
  font-family: 'Instrument Serif', serif; font-style: italic; font-weight: 400;
  color: var(--gt-brand); letter-spacing: -0.01em;
  font-size: 1.18em;
}
.auth-modal .lede {
  text-align: center; margin: 0 0 24px;
  font-size: 14px; line-height: 1.55; color: var(--gt-ink-secondary);
  max-width: 32ch; margin-left: auto; margin-right: auto;
}

.auth-providers { display: flex; flex-direction: column; gap: 8px; }
.auth-btn {
  display: flex; align-items: center; gap: 12px;
  height: 52px; padding: 0 20px;
  background: rgba(255,255,255,0.85);
  border: 1px solid rgba(20,20,26,0.06);
  border-radius: var(--gt-r-md);
  color: var(--gt-ink);
  font: 700 14px/1 inherit;
  letter-spacing: -0.01em; cursor: pointer;
  transition: transform 200ms var(--gt-ease-bouncy), background 180ms var(--gt-ease-standard), box-shadow 200ms var(--gt-ease-standard);
  position: relative;
}
.auth-btn:hover { background: #fff; transform: translateY(-2px); box-shadow: var(--gt-depth-md); }
.auth-btn:active { transform: translateY(0); }
.auth-btn .logo { width: 22px; height: 22px; flex-shrink: 0; }
.auth-btn .text { flex: 1; text-align: left; }
.auth-btn .arrow {
  opacity: 0.35; transition: transform 220ms var(--gt-ease-bouncy), opacity 200ms ease;
  font-size: 18px;
}
.auth-btn:hover .arrow { opacity: 1; transform: translateX(3px); }

.auth-btn.telegram { background: linear-gradient(135deg, rgba(99,158,222,0.12), rgba(0,136,204,0.16)); border-color: rgba(0,136,204,0.18); color: #14141A; }
.auth-btn.telegram:hover { background: linear-gradient(135deg, rgba(99,158,222,0.22), rgba(0,136,204,0.28)); }

[data-theme="dark"] .auth-btn { background: rgba(255,255,255,0.06); color: var(--gt-ink); border-color: rgba(255,255,255,0.06); }
[data-theme="dark"] .auth-btn:hover { background: rgba(255,255,255,0.12); }
[data-theme="dark"] .auth-btn.telegram { background: linear-gradient(135deg, rgba(99,158,222,0.20), rgba(0,136,204,0.28)); }

/* "loading" provider state */
.auth-btn.loading {
  pointer-events: none;
  background: var(--gt-brand-soft);
  color: var(--gt-brand);
}
.auth-btn.loading .logo,
.auth-btn.loading .arrow { display: none; }
.auth-btn.loading::before {
  content: ""; width: 18px; height: 18px;
  border: 2px solid currentColor; border-top-color: transparent;
  border-radius: 99px;
  animation: authSpin 800ms linear infinite;
}
@keyframes authSpin { to { transform: rotate(360deg); } }

.auth-fineprint {
  margin: 20px 0 0; text-align: center;
  font-size: 11px; line-height: 1.55; color: var(--gt-ink-tertiary);
}
.auth-fineprint a { color: var(--gt-ink-secondary); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 2px; }

/* ===== states ===== */
.auth-modal.state-error .auth-providers { opacity: 0.4; pointer-events: none; }
.auth-error-banner {
  margin: -12px 0 16px;
  padding: 12px 14px;
  background: rgba(200,72,88,0.10);
  border: 1px solid rgba(200,72,88,0.20);
  color: var(--gt-danger);
  border-radius: var(--gt-r-sm);
  font-size: 12px; font-weight: 600;
  display: flex; align-items: flex-start; gap: 10px;
}
.auth-error-banner svg { width: 14px; height: 14px; flex-shrink: 0; margin-top: 1px; }
.auth-error-banner .retry {
  background: transparent; border: 0; cursor: pointer;
  font-family: inherit; font-weight: 800; color: var(--gt-danger);
  margin-left: auto; padding: 0; font-size: 12px;
  text-decoration: underline;
}

.auth-empty-banner {
  margin: 8px 0 0;
  padding: 16px;
  background: var(--gt-surface-2);
  border-radius: var(--gt-r-md);
  text-align: center;
  font-size: 13px; line-height: 1.6; color: var(--gt-ink-secondary);
}
[data-theme="dark"] .auth-empty-banner { background: rgba(255,255,255,0.05); }

/* ===== intermediate "signing in" ===== */
.auth-signingin {
  position: absolute; left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  z-index: 7;
  width: 340px;
  padding: 36px 32px;
  background: var(--gt-glass);
  backdrop-filter: saturate(180%) blur(36px);
  border: 1px solid var(--gt-glass-stroke);
  border-radius: var(--gt-r-2xl);
  box-shadow: var(--gt-depth-float);
  text-align: center;
}
.auth-signingin .mark-spinner svg {
  width: 56px; height: 56px;
  animation: authSpin 1400ms linear infinite;
  transform-origin: 50% 50%;
  color: var(--gt-brand);
}
.auth-signingin h3 {
  margin: 16px 0 6px;
  font-size: 18px; font-weight: 800; letter-spacing: -0.02em;
}
.auth-signingin h3 em {
  font-family: 'Instrument Serif', serif; font-style: italic; font-weight: 400;
  color: var(--gt-brand);
}
.auth-signingin p {
  margin: 0; font-size: 12px; color: var(--gt-ink-secondary);
}

/* ===== mobile bottom sheet ===== */
.auth-mobile {
  width: 320px;
  margin: 0 auto;
  height: 580px;
  background: #15172A;
  border-radius: 28px;
  border: 8px solid #15172A;
  overflow: hidden;
  position: relative;
  box-shadow: var(--gt-depth-lg);
}
.auth-mobile .screen {
  position: absolute; inset: 0;
  background: var(--gt-mesh);
}
.auth-mobile .notch {
  position: absolute; top: 6px; left: 50%; transform: translateX(-50%);
  width: 80px; height: 14px; background: #15172A; border-radius: 0 0 8px 8px; z-index: 5;
}
.auth-mobile .sheet {
  position: absolute; left: 0; right: 0; bottom: 0;
  background: var(--gt-glass);
  backdrop-filter: saturate(180%) blur(36px);
  border-top: 1px solid var(--gt-glass-stroke);
  border-radius: 24px 24px 0 0;
  padding: 24px 22px 28px;
  box-shadow: 0 -20px 40px -8px rgba(20,20,26,0.25);
}
.auth-mobile .grabber {
  width: 36px; height: 4px; background: rgba(20,20,26,0.18);
  border-radius: 99px; margin: 0 auto 18px;
}
.auth-mobile .mark-anim {
  display: flex; justify-content: center;
  margin-bottom: 12px; color: var(--gt-brand);
}
.auth-mobile .mark-anim svg { width: 40px; height: 40px; }
.auth-mobile h2 {
  text-align: center; font-size: 24px; font-weight: 900;
  letter-spacing: -0.025em; line-height: 1.05; margin: 0 0 6px;
}
.auth-mobile h2 em {
  font-family: 'Instrument Serif', serif; font-style: italic; font-weight: 400;
  color: var(--gt-brand); font-size: 1.18em;
}
.auth-mobile .lede {
  text-align: center; font-size: 12px; line-height: 1.5;
  color: var(--gt-ink-secondary); margin: 0 0 16px;
}
.auth-mobile .auth-providers { gap: 6px; }
.auth-mobile .auth-btn { height: 46px; font-size: 13px; padding: 0 16px; }
.auth-mobile .auth-fineprint { margin-top: 14px; }

/* ===== style guide cards ===== */
.auth-states-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 20px;
}
.auth-state-card {
  position: relative;
  border-radius: var(--gt-r-xl);
  background: var(--gt-mesh-soft);
  border: 1px solid var(--gt-line);
  padding: 24px;
  min-height: 440px;
  display: flex; flex-direction: column;
  overflow: hidden;
}
.auth-state-card .label {
  font-family: var(--gt-font-mono); font-size: 10px;
  color: var(--gt-ink-tertiary);
  text-transform: uppercase; letter-spacing: 0.08em;
  margin-bottom: 4px;
}
.auth-state-card h4 {
  font-size: 18px; font-weight: 800; letter-spacing: -0.02em;
  margin: 0 0 14px;
}
.auth-state-card .stage {
  flex: 1; display: flex; align-items: center; justify-content: center;
  position: relative;
}
.auth-state-card .stage .auth-modal,
.auth-state-card .stage .auth-signingin {
  position: relative; left: auto; top: auto; transform: none;
  width: 100%; max-width: 360px;
  animation: none;
}

[data-theme="dark"] .auth-state-card { background: var(--gt-surface); border-color: rgba(255,255,255,0.06); }