/* ── Auth Page ─────────────────────────────────────────────────────────────── */
.page-auth {
  position: fixed;
  inset: 0;
  background: transparent;
}

/* ── Auth Card Overlay ───────────────────────────────────────────────────── */
.auth-card-overlay {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow-y: auto;
  opacity: 0;
  pointer-events: none;
  transition: opacity .4s ease;
}
.auth-card-overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

/* ── CardNav (cover navigation bar) ─────────────────────────────────────────── */
.card-nav-container {
  position: fixed;
  top: 1.2em;
  left: 50%;
  transform: translateX(-50%);
  width: 90%;
  max-width: 800px;
  z-index: 99;
  box-sizing: border-box;
}
.card-nav {
  display: block;
  height: 60px;
  padding: 0;
  background-color: rgba(20,24,52,.92);
  border: 1px solid rgba(232,232,240,.1);
  border-radius: 0.75rem;
  box-shadow: 0 4px 6px rgba(0,0,0,.3);
  position: relative;
  overflow: hidden;
  transition: height 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  backdrop-filter: blur(20px);
}
.card-nav.open { height: 260px; }
@media (max-width: 768px) {
  .card-nav.open { height: auto; }
}
.card-nav-top {
  position: absolute; top: 0; left: 0; right: 0; height: 60px;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.5rem 0.45rem 0.55rem 1.1rem;
  z-index: 2;
}
.hamburger-menu {
  height: 100%;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  cursor: pointer; gap: 6px;
  color: var(--text-dim);
}
.hamburger-menu:hover .hamburger-line { opacity: 0.75; }
.hamburger-line {
  width: 30px; height: 2px;
  background-color: currentColor;
  transition: transform 0.25s ease, opacity 0.2s ease;
  transform-origin: 50% 50%;
}
.hamburger-menu.open .hamburger-line:first-child  { transform: translateY(4px) rotate(45deg); }
.hamburger-menu.open .hamburger-line:last-child   { transform: translateY(-4px) rotate(-45deg); }
.logo-container {
  display: flex; align-items: center;
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
}
.logo-text {
  font-family: 'Cinzel', 'Georgia', 'Noto Serif SC', 'PingFang SC', 'Microsoft YaHei', serif;
  font-size: 1.1rem; font-weight: 700;
  color: var(--text);
  letter-spacing: -0.03em;
}
.card-nav-cta-button {
  background-color: var(--accent);
  color: var(--button-text);
  border: none;
  border-radius: calc(0.75rem - 0.35rem);
  padding: 0 1rem;
  height: 100%;
  font-family: inherit;
  font-size: 0.9rem; font-weight: 500;
  cursor: pointer;
  transition: background-color 0.3s ease;
  display: flex; align-items: center;
  white-space: nowrap;
}
.card-nav-cta-button:hover { background-color: #E0C550; }
.card-nav-content {
  position: absolute; left: 0; right: 0; top: 60px; bottom: 0;
  padding: 0.5rem;
  display: flex; align-items: flex-end; gap: 12px;
  visibility: hidden; pointer-events: none;
  z-index: 1;
  opacity: 0;
  transition: opacity 0.35s ease;
}
.card-nav.open .card-nav-content { visibility: visible; pointer-events: auto; opacity: 1; }

.nav-card {
  height: 100%; flex: 1 1 0; min-width: 0;
  border-radius: calc(0.75rem - 0.2rem);
  position: relative;
  display: flex; flex-direction: column;
  padding: 12px 16px; gap: 8px;
  user-select: none;
  transform: translateY(20px);
  opacity: 0;
  transition: transform 0.35s ease 0.05s, opacity 0.35s ease 0.05s;
}
.card-nav.open .nav-card { transform: translateY(0); opacity: 1; }
.card-nav.open .nav-card:nth-child(2) { transition-delay: 0.12s; }
.card-nav.open .nav-card:nth-child(3) { transition-delay: 0.19s; }
.nav-card-label { font-weight: 400; font-size: 22px; letter-spacing: -0.5px; }
.nav-card-links {
  margin-top: auto;
  display: flex; flex-direction: column; gap: 2px;
}
.nav-card-link {
  font-size: 16px; cursor: pointer;
  text-decoration: none; color: inherit;
  transition: opacity 0.3s ease;
  display: inline-flex; align-items: center; gap: 6px;
}
.nav-card-link:hover { opacity: 0.75; }
.nav-card-link-icon { width: 14px; height: 14px; flex-shrink: 0; }

@media (max-width: 768px) {
  .card-nav-container { width: 90%; top: 0.6em; }
  .card-nav-top { padding: 0.5rem 1rem; justify-content: space-between; }
  .hamburger-menu { order: 2; }
  .logo-container { position: static; transform: none; order: 1; }
  .card-nav-cta-button { display: none; }
  .card-nav-content { flex-direction: column; align-items: stretch; gap: 8px; padding: 0.5rem; bottom: 0; justify-content: flex-start; }
  .nav-card { height: auto; min-height: 50px; flex: 1 1 auto; max-height: none; }
  .nav-card-label { font-size: 18px; }
  .nav-card-link { font-size: 15px; }
}

/* ── Auth Cover (Phase 1) ────────────────────────────────────────────────── */
.auth-cover {
  position: fixed;
  inset: 0;
  z-index: 5;
  overflow-y: auto;
  overflow-x: hidden;
  transition: opacity .4s ease;
}
.auth-cover.hidden {
  opacity: 0;
  pointer-events: none;
}

/* ── Cover Hero ────────────────────────────────────────────────────────────── */
.cover-hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  text-align: center;
  position: relative;
}

.cover-heading {
  font-family: 'Cinzel', 'Georgia', 'Noto Serif SC', 'PingFang SC', 'Microsoft YaHei', serif;
  font-size: clamp(2.2rem, 6vw, 4.5rem);
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin-bottom: 1.2rem;
  color: var(--text);
}

.cover-sub {
  font-family: inherit;
  font-size: clamp(.95rem, 1.8vw, 1.2rem);
  color: var(--text-dim);
  margin-bottom: 2rem;
  line-height: 1.5;
  max-width: 500px;
}

.cover-btn-register {
  display: inline-block;
  padding: .7rem 2.2rem;
  background: var(--accent);
  color: var(--button-text);
  border: none;
  border-radius: 999px;
  font-family: inherit;
  font-size: .95rem;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: all .25s ease;
  box-shadow: 0 0 20px rgba(245,213,98,.25);
}
.cover-btn-register:hover {
  background: #E0C550;
  box-shadow: 0 0 30px rgba(245,213,98,.4);
  transform: translateY(-1px);
}

.scroll-hint {
  position: absolute;
  bottom: 2rem;
  font-size: .85rem;
  color: var(--text-dim);
  animation: bounce 2s ease infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}

/* ── Cover Sections ───────────────────────────────────────────────────────── */
.cover-section {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem;
  border-top: 1px solid rgba(232,232,240,.06);
}
.cover-section:nth-child(even) { background: rgba(14,18,44,.3); }
.cover-section .split-target {
  font-size: clamp(1.5rem, 4vw, 3rem);
  font-weight: 300;
  text-align: center;
  max-width: 800px;
  line-height: 1.3;
  color: var(--text);
}

/* ── Split text children ─────────────────────────────────────────────────── */
.split-parent { display: inline-block; white-space: normal; word-wrap: break-word; }
.split-char, .split-word {
  display: inline-block;
  will-change: transform, opacity;
  opacity: 0;
  transform: translateY(var(--fy, 40px));
  transition: opacity var(--fd, 0.7s) var(--fe, cubic-bezier(0.16, 1, 0.3, 1)), transform var(--fd, 0.7s) var(--fe, cubic-bezier(0.16, 1, 0.3, 1));
  transition-delay: var(--fdly, 0ms);
}
.split-animate .split-char,
.split-animate .split-word {
  opacity: 1;
  transform: translateY(0);
}

.auth-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
}
.auth-glow-1 {
  width: 500px; height: 500px;
  background: rgba(100,140,220,.35);
  top: -150px; left: -150px;
}
.auth-glow-2 {
  width: 400px; height: 400px;
  background: rgba(245,213,98,.2);
  bottom: -120px; right: -80px;
}

.auth-card {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 400px;
  margin: 20px;
  padding: 42px 36px 38px;
  background: rgba(26,32,62,.95);
  border: 1px solid rgba(245,213,98,.35);
  border-radius: 24px;
  backdrop-filter: blur(20px);
  box-shadow: 0 24px 70px rgba(0,0,0,.5), inset 0 1px 0 rgba(255,255,255,.1);
}

/* ── Logo ──────────────────────────────────────────────────────────────────── */
.auth-logo, .sidebar-logo {
  display: flex;
  align-items: center;
  justify-content: center;
}

.auth-logo { margin-bottom: 28px; }

.brand-logo-img {
  display: block;
  width: min(260px, 100%);
  height: auto;
}

.brand-logo-text {
  font-family: 'Cinzel', 'Georgia', 'Noto Serif SC', 'PingFang SC', 'Microsoft YaHei', serif;
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.04em;
}
.brand-logo-text span { color: var(--accent); }

/* ── Auth Tabs ─────────────────────────────────────────────────────────────── */
.auth-tabs {
  display: flex;
  background: rgba(232,232,240,.08);
  border: 1px solid rgba(232,232,240,.12);
  border-radius: 999px;
  padding: 5px;
  margin-bottom: 24px;
}

.auth-tab {
  flex: 1;
  padding: 10px 14px;
  background: none;
  border: none;
  border-radius: 999px;
  color: var(--text-muted);
  font-size: .9rem;
  font-weight: 500;
  cursor: pointer;
  transition: transform .18s, box-shadow .22s, background .22s, color .22s;
}

.auth-tab.active {
  background: var(--accent);
  color: var(--button-text);
  box-shadow: var(--button-shadow);
}

/* ── Form Fields ───────────────────────────────────────────────────────────── */
.field {
  position: relative;
  margin-bottom: 14px;
}

.field-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 17px; height: 17px;
  color: var(--text-muted);
  pointer-events: none;
}

input[type="text"],
input[type="password"],
input[type="email"] {
  width: 100%;
  padding: 12px 14px 12px 42px;
  background: rgba(232,232,240,.1);
  border: 1px solid rgba(232,232,240,.15);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: .92rem;
  outline: none;
  transition: border-color .2s, background .2s;
}

input[type="text"]::placeholder,
input[type="password"]::placeholder,
input[type="email"]::placeholder { color: var(--text-muted); }

input[type="text"]:focus,
input[type="password"]:focus,
input[type="email"]:focus {
  border-color: var(--accent);
  background: rgba(232,232,240,.16);
}

/* ── Error / Success ─────────────────────────────────────────────────────────── */
.error-msg {
  color: #f87171;
  font-size: .82rem;
  margin-top: 10px;
  min-height: 1.2em;
  text-align: center;
}

.success-msg {
  color: #34d399;
  font-size: .82rem;
  margin-top: 10px;
  min-height: 1.2em;
  text-align: center;
}

/* ── Login method tabs ────────────────────────────────────────────────────────── */
.login-method-tabs {
  display: flex;
  background: rgba(232,232,240,.06);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px;
  margin-bottom: 18px;
}

.login-method-tab {
  flex: 1;
  padding: 8px 12px;
  background: none;
  border: none;
  border-radius: 999px;
  color: var(--text-muted);
  font-size: .82rem;
  font-weight: 500;
  cursor: pointer;
  transition: background .2s, color .2s;
}
.login-method-tab.active {
  background: var(--accent);
  color: var(--button-text);
}

/* ── Email row with send code button ─────────────────────────────────────────── */
.field-row {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}
.field-row .field { margin-bottom: 0; flex: 1; }

.field-grow { flex: 1; }

.btn-send-code {
  flex-shrink: 0;
  padding: 0 16px;
  background: var(--accent);
  color: var(--button-text);
  border: none;
  border-radius: var(--radius-sm);
  font-size: .82rem;
  font-weight: 500;
  white-space: nowrap;
  transition: background .2s, opacity .2s;
}
.btn-send-code:hover { background: var(--button-soft-hover); color: var(--button-text); }
.btn-send-code:disabled { opacity: .5; cursor: not-allowed; }
.btn-send-code.counting {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

/* ── Verification method selector ─────────────────────────────────────────── */
.verify-method-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 14px;
  padding: 6px 10px;
  background: rgba(232,232,240,.05);
  border-radius: var(--radius-sm);
}
.verify-method-label {
  font-size: .78rem;
  color: var(--text-muted);
  margin-right: 4px;
  white-space: nowrap;
}

/* ── Auth Toast ──────────────────────────────────────────────────────────── */
.auth-toast {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  backdrop-filter: blur(8px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.auth-toast.hidden { display: none; }
.auth-toast-card {
  width: auto;
  max-width: 320px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-accent);
  border-radius: 14px;
  padding: 24px 28px 20px;
  text-align: center;
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255,255,255,.1);
  backdrop-filter: blur(22px);
  animation: fadeSlideIn .3s ease both;
}
.auth-toast-card p {
  font-size: .88rem;
  color: var(--text-dim);
  line-height: 1.5;
}
.auth-toast-card .btn-gradient {
  width: auto;
  padding: 8px 32px;
  font-size: .82rem;
  margin-top: 14px;
}

/* ── Forgot Password ─────────────────────────────────────────────────── */
.forgot-password-wrap { text-align: right; margin-bottom: 8px; }
.forgot-password-wrap.hidden { display: none; }
.btn-forgot-password {
  background: none;
  border: none;
  color: var(--accent-light);
  font-size: .8rem;
  cursor: pointer;
  padding: 0;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: opacity .15s;
}
.btn-forgot-password:hover { opacity: .7; }

/* ════════════════════════════════════════════════════════════════════════════
  Entrance Animation — Symphony + Golden Bloom
  Login → App transition: pulse → rings → dissolve → bloom → sidebar/cards reveal
  ════════════════════════════════════════════════════════════════════════════════ */

/* ── Rings (3 concentric expanding circles) ────────────────────────────────── */
.entrance-ring {
  position: fixed; border-radius: 50%; pointer-events: none; z-index: 200;
  border: 1.5px solid rgba(245,213,98,.35);
  opacity: 0; transform: scale(0);
}
.entrance-ringing .entrance-ring-1 { animation: entRing1 1.2s cubic-bezier(0.16, 1, 0.3, 1) forwards; }
.entrance-ringing .entrance-ring-2 { animation: entRing2 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.15s forwards; }
.entrance-ringing .entrance-ring-3 { animation: entRing3 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.30s forwards; }
@keyframes entRing1 {
  0%   { transform: scale(0.1); opacity: 0.7; }
  100% { transform: scale(55); opacity: 0; }
}
@keyframes entRing2 {
  0%   { transform: scale(0.1); opacity: 0.55; }
  100% { transform: scale(70); opacity: 0; }
}
@keyframes entRing3 {
  0%   { transform: scale(0.1); opacity: 0.4; }
  100% { transform: scale(90); opacity: 0; }
}

/* ── Button pulse ─────────────────────────────────────────────────────────── */
.entrance-pulsing #auth-submit {
  transform: scale(1.12);
  box-shadow: 0 0 60px rgba(245,213,98,.7), 0 0 140px rgba(245,213,98,.35), 0 0 200px rgba(245,213,98,.15);
  transition: transform .4s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow .4s ease;
}

/* ── Auth card dissolve ──────────────────────────────────────────────────── */
.entrance-dissolving .auth-card {
  filter: blur(18px) brightness(2.5);
  opacity: 0;
  transition: filter .45s ease, opacity .3s ease .2s;
}
.entrance-dissolving .auth-card-overlay {
  opacity: 0;
  pointer-events: none;
  transition: opacity .35s ease .4s;
}

/* ── Golden bloom ripple ──────────────────────────────────────────────────── */
.entrance-ripple {
  position: fixed; border-radius: 50%; z-index: 195; pointer-events: none;
  background: radial-gradient(circle, rgba(245,213,98,.6) 0%, rgba(245,213,98,.2) 40%, transparent 70%);
  transform: scale(0); opacity: 0;
}
.entrance-blooming .entrance-ripple {
  animation: entBloom 1.0s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
@keyframes entBloom {
  0%   { transform: scale(0);   opacity: .9; }
  40%  { transform: scale(1.2); opacity: .55; }
  100% { transform: scale(90);  opacity: 0; }
}

/* ── App shell reveal ────────────────────────────────────────────────────── */
body.entrance-waiting .page-app {
  display: flex;
  filter: brightness(.35) saturate(.2);
}
body.entrance-entered .page-app {
  filter: brightness(1) saturate(1);
  transition: filter .5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Sidebar spring */
body.entrance-waiting .sidebar {
  opacity: 0;
  transform: translateX(-50px);
}
body.entrance-entered .sidebar {
  opacity: 1;
  transform: translateX(0);
  transition: opacity .3s ease-out, transform .65s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Content fade */
body.entrance-waiting .content {
  opacity: 0;
  transform: translateY(24px);
}
body.entrance-entered .content {
  opacity: 1;
  transform: translateY(0);
  transition: opacity .4s ease-out .15s, transform .5s cubic-bezier(0.16, 1, 0.3, 1) .15s;
}

/* Cards staggered pop-in */
body.entrance-waiting .note-card {
  opacity: 0;
  transform: translateY(20px) scale(.93);
}
body.entrance-entered .note-card {
  transition: opacity .35s ease-out, transform .5s cubic-bezier(0.34, 1.56, 0.64, 1);
}
body.entrance-entered .note-card:nth-child(1) { transition-delay: .3s; opacity: 1; transform: translateY(0) scale(1); }
body.entrance-entered .note-card:nth-child(2) { transition-delay: .4s; opacity: 1; transform: translateY(0) scale(1); }
body.entrance-entered .note-card:nth-child(3) { transition-delay: .5s; opacity: 1; transform: translateY(0) scale(1); }
body.entrance-entered .note-card:nth-child(4) { transition-delay: .6s; opacity: 1; transform: translateY(0) scale(1); }
body.entrance-entered .note-card:nth-child(5) { transition-delay: .7s; opacity: 1; transform: translateY(0) scale(1); }
body.entrance-entered .note-card:nth-child(6) { transition-delay: .8s; opacity: 1; transform: translateY(0) scale(1); }