html, body { margin: 0; padding: 0; width: 100%; min-height: 100%; background: #313840; }

:root {
  --vlr-bg: #313840;
  --vlr-bg-deep: #252b31;
  --vlr-panel: #f4f1ea;
  --vlr-paper: #fffdf8;
  --vlr-ink: #242824;
  --vlr-muted: #69706f;
  --vlr-line: #d5d1c7;
  --vlr-navy: #27445f;
  --vlr-navy-deep: #19344d;
  --vlr-soft: #e7ecef;
  --vlr-error: #a33f38;
  --vlr-shadow: 0 18px 52px rgba(8, 12, 16, 0.32);
  --vlr-font-serif: "Noto Serif KR", "Nanum Myeongjo", "AppleMyungjo", Georgia, serif;
  --vlr-font-sans: Pretendard, "Noto Sans KR", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

#vlr-app,
#vlr-app * { box-sizing: border-box; }

#vlr-app {
  min-height: 100dvh;
  margin: 0;
  color: var(--vlr-ink);
  background: #ede9e0;
  font-family: var(--vlr-font-sans);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

#vlr-app button,
#vlr-app input,
#vlr-app select { font: inherit; }

#vlr-app button,
#vlr-app a,
#vlr-app input,
#vlr-app select { -webkit-tap-highlight-color: transparent; }

#vlr-app a { color: inherit; }

.vlr-app { min-height: 100dvh; padding: clamp(20px, 4vw, 48px); }
.vlr-app--reader { height: 100dvh; min-height: 560px; padding: 0; overflow: hidden; background: var(--vlr-bg); }

.vlr-button,
.vlr-icon-button,
.vlr-menu-button,
.vlr-pager-button {
  border: 0;
  cursor: pointer;
}

.vlr-button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border-radius: 9px;
  font-size: 0.9rem;
  font-weight: 720;
  line-height: 1.2;
}

.vlr-button--primary { color: #fff; background: var(--vlr-navy); }
.vlr-button--primary:hover { background: var(--vlr-navy-deep); }

.vlr-button:disabled,
.vlr-menu-button:disabled,
.vlr-pager-button:disabled,
.vlr-input:disabled { cursor: not-allowed; opacity: 0.42; }

.vlr-button:focus-visible,
.vlr-menu-button:focus-visible,
.vlr-pager-button:focus-visible,
.vlr-input:focus-visible,
.vlr-page-input:focus-visible,
.vlr-select:focus-visible,
.vlr-progress-slider:focus-visible,
.vlr-reader-viewport:focus-visible,
.vlr-home-link:focus-visible,
.vlr-menu-link:focus-visible {
  outline: 3px solid rgba(83, 134, 177, 0.42);
  outline-offset: 2px;
}

/* Authentication */
.vlr-auth-shell {
  display: grid;
  width: min(860px, 100%);
  margin: min(8vh, 72px) auto 0;
  grid-template-columns: minmax(150px, 230px) minmax(0, 1fr);
  align-items: center;
  gap: clamp(28px, 6vw, 68px);
}

.vlr-auth-cover { margin: 0; }
.vlr-auth-cover img {
  display: block;
  width: 100%;
  border-radius: 3px;
  box-shadow: 0 18px 42px rgba(47, 42, 34, 0.22);
}

.vlr-auth-panel { min-width: 0; }
.vlr-auth-header { margin-bottom: 24px; }
.vlr-eyebrow {
  margin: 0 0 6px;
  color: var(--vlr-navy);
  font-size: 0.68rem;
  font-weight: 760;
  letter-spacing: 0.14em;
}
.vlr-auth-title {
  margin: 0;
  font-family: var(--vlr-font-serif);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 650;
  letter-spacing: -0.045em;
  line-height: 1.12;
}
.vlr-auth-subtitle { margin: 9px 0 0; color: var(--vlr-muted); font-size: 0.94rem; }

.vlr-auth-card {
  padding: clamp(22px, 4vw, 36px);
  border: 1px solid rgba(87, 78, 63, 0.14);
  border-radius: 16px;
  background: rgba(255, 253, 248, 0.9);
  box-shadow: 0 16px 42px rgba(67, 59, 45, 0.1);
}
.vlr-auth-card__title { margin: 0; font-family: var(--vlr-font-serif); font-size: 1.4rem; }
.vlr-auth-card__intro { margin: 6px 0 22px; color: var(--vlr-muted); font-size: 0.9rem; }
.vlr-label { display: block; margin-bottom: 7px; font-size: 0.82rem; font-weight: 720; }
.vlr-auth-form__row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 9px; }

.vlr-input,
.vlr-page-input,
.vlr-select {
  border: 1px solid var(--vlr-line);
  border-radius: 8px;
  color: var(--vlr-ink);
  background: var(--vlr-paper);
}
.vlr-input:focus,
.vlr-page-input:focus,
.vlr-select:focus { border-color: var(--vlr-navy); box-shadow: 0 0 0 3px rgba(39, 68, 95, 0.1); }
.vlr-input--code { width: 100%; min-height: 46px; padding: 9px 13px; letter-spacing: 0.08em; }
.vlr-form-error { min-height: 1.4em; margin: 8px 0 0; color: var(--vlr-error); font-size: 0.82rem; font-weight: 620; }
.vlr-form-error[hidden] { display: block; visibility: hidden; }
.vlr-privacy-note { margin-top: 24px; padding: 14px 16px; border-left: 3px solid var(--vlr-navy); background: var(--vlr-soft); color: #46535c; font-size: 0.8rem; }
.vlr-privacy-note strong { display: block; margin-bottom: 4px; color: var(--vlr-navy-deep); }
.vlr-privacy-note ul { margin: 0; padding-left: 1.15rem; }
.vlr-home-link { display: inline-block; margin-top: 16px; color: var(--vlr-navy) !important; font-size: 0.82rem; font-weight: 680; text-decoration: underline; text-underline-offset: 3px; }

/* Reader shell */
.vlr-reader {
  display: grid;
  width: 100%;
  height: 100%;
  grid-template-rows: auto minmax(0, 1fr) auto;
  overflow: hidden;
}

.vlr-reader-header {
  z-index: 5;
  display: flex;
  min-height: 58px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 8px clamp(12px, 2.5vw, 28px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  color: #eef1f3;
  background: rgba(37, 43, 49, 0.96);
}
.vlr-reader-header__identity { display: flex; min-width: 0; align-items: baseline; gap: 12px; }
.vlr-reader-title { margin: 0; overflow: hidden; font-family: var(--vlr-font-serif); font-size: clamp(1rem, 2vw, 1.25rem); font-weight: 620; letter-spacing: -0.025em; text-overflow: ellipsis; white-space: nowrap; }
.vlr-reader-status { margin: 0; color: #aeb8bf; font-size: 0.75rem; font-variant-numeric: tabular-nums; white-space: nowrap; }
.vlr-reader-status--error { color: #ffb4ad; font-weight: 650; }
.vlr-reader-menu { display: flex; flex: 0 0 auto; align-items: center; gap: 7px; }
.vlr-menu-button,
.vlr-menu-link {
  min-height: 34px;
  padding: 6px 10px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 7px;
  color: #e5eaed !important;
  background: rgba(255, 255, 255, 0.04);
  font-size: 0.76rem;
  font-weight: 650;
  line-height: 1.2;
  text-decoration: none;
}
.vlr-menu-button:hover,
.vlr-menu-link:hover { background: rgba(255, 255, 255, 0.1); }
.vlr-menu-button--quiet { color: #bdc6cb !important; }
.vlr-select.vlr-zoom-select {
  min-height: 34px;
  padding: 5px 28px 5px 9px;
  border-color: rgba(255, 255, 255, 0.16);
  color: #e5eaed;
  background-color: #343d45;
  font-size: 0.76rem;
  font-weight: 650;
}

.vlr-reader-viewport {
  min-width: 0;
  min-height: 0;
  overflow: auto;
  overscroll-behavior: contain;
  background:
    radial-gradient(circle at 50% 18%, rgba(255, 255, 255, 0.055), transparent 38rem),
    var(--vlr-bg);
  scrollbar-color: #69737c transparent;
  scrollbar-width: thin;
  touch-action: pan-x pan-y;
}
.vlr-page-surface {
  position: relative;
  display: flex;
  width: max-content;
  min-width: 100%;
  min-height: 100%;
  align-items: flex-start;
  justify-content: center;
  padding: 16px;
}
.vlr-page-spread {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 14px;
  flex: 0 0 auto;
}
.vlr-page-spread--double::after {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 14px;
  content: "";
  pointer-events: none;
  transform: translateX(-50%);
  background: linear-gradient(90deg, transparent, rgba(7, 11, 14, 0.18), transparent);
}
.vlr-page-canvas,
.vlr-reader-cover {
  display: block;
  max-width: none;
  flex: 0 0 auto;
  border: 0;
  background: var(--vlr-paper);
  box-shadow: var(--vlr-shadow);
  transition: opacity 160ms ease;
}
.vlr-page-spread[hidden],
.vlr-page-canvas[hidden],
.vlr-reader-cover[hidden] { display: none; }
.vlr-reader-cover--page { width: auto; max-width: calc(100vw - 40px); max-height: calc(100% - 1px); object-fit: contain; }
.vlr-reader-cover--width { width: min(100%, 760px); height: auto; }
.vlr-reader-cover--fixed { height: auto; }

.vlr-page-loading {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: #d1d7da;
  background: rgba(49, 56, 64, 0.76);
  font-size: 0.82rem;
  backdrop-filter: blur(2px);
}
.vlr-page-loading[hidden] { display: none; }

/* Bottom pager */
.vlr-pager {
  z-index: 7;
  display: grid;
  grid-template-columns: auto minmax(180px, 620px) auto;
  align-items: center;
  justify-content: center;
  gap: clamp(10px, 2vw, 22px);
  min-height: 72px;
  padding: 9px max(12px, env(safe-area-inset-right)) max(9px, env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left));
  border-top: 1px solid rgba(255, 255, 255, 0.09);
  color: #e8ecef;
  background: rgba(37, 43, 49, 0.98);
  box-shadow: 0 -8px 28px rgba(8, 12, 16, 0.18);
}
.vlr-pager-button {
  min-width: 64px;
  min-height: 40px;
  padding: 8px 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  color: #f3f5f6;
  background: rgba(255, 255, 255, 0.06);
  font-size: 0.82rem;
  font-weight: 700;
}
.vlr-pager-button:hover:not(:disabled) { color: #fff; background: var(--vlr-navy); }
.vlr-pager-center { display: grid; min-width: 0; grid-template-columns: auto minmax(100px, 1fr); align-items: center; gap: 14px; }
.vlr-page-field { display: inline-flex; align-items: center; gap: 5px; color: #b7c0c5; font-size: 0.76rem; white-space: nowrap; }
.vlr-page-label { margin-right: 2px; }
.vlr-page-input { width: 54px; height: 34px; padding: 4px 6px; border-color: rgba(255, 255, 255, 0.18); color: #f4f5f6; background: #343d45; text-align: center; font-size: 0.82rem; font-variant-numeric: tabular-nums; -moz-appearance: textfield; }
.vlr-page-input::-webkit-inner-spin-button,
.vlr-page-input::-webkit-outer-spin-button { margin: 0; -webkit-appearance: none; }
.vlr-page-total { min-width: 38px; font-variant-numeric: tabular-nums; }
.vlr-progress-slider {
  width: 100%;
  height: 18px;
  margin: 0;
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  cursor: pointer;
}
.vlr-progress-slider::-webkit-slider-runnable-track { height: 4px; border-radius: 999px; background: linear-gradient(to right, #7fa2bf 0 var(--vlr-progress, 0%), #59636b var(--vlr-progress, 0%) 100%); }
.vlr-progress-slider::-moz-range-track { height: 4px; border-radius: 999px; background: #59636b; }
.vlr-progress-slider::-moz-range-progress { height: 4px; border-radius: 999px; background: #7fa2bf; }
.vlr-progress-slider::-webkit-slider-thumb { width: 16px; height: 16px; margin-top: -6px; border: 2px solid #263440; border-radius: 50%; appearance: none; -webkit-appearance: none; background: #eef2f4; box-shadow: 0 1px 5px rgba(0, 0, 0, 0.35); }
.vlr-progress-slider::-moz-range-thumb { width: 14px; height: 14px; border: 2px solid #263440; border-radius: 50%; background: #eef2f4; }

.vlr-state-card {
  display: flex;
  width: min(540px, calc(100% - 32px));
  min-height: 210px;
  margin: min(20vh, 170px) auto 0;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px;
  border: 1px solid var(--vlr-line);
  border-radius: 16px;
  background: var(--vlr-paper);
  box-shadow: 0 18px 45px rgba(48, 42, 31, 0.1);
  text-align: center;
}
.vlr-state-card--error { border-top: 4px solid var(--vlr-error); }
.vlr-state-card__title { margin: 0 0 8px; font-family: var(--vlr-font-serif); font-size: 1.4rem; }
.vlr-state-card__message { max-width: 38em; margin: 10px 0 20px; color: var(--vlr-muted); overflow-wrap: anywhere; }
.vlr-spinner { display: inline-block; width: 21px; height: 21px; border: 2px solid rgba(190, 203, 212, 0.25); border-top-color: #8da9bd; border-radius: 50%; animation: vlr-spin 700ms linear infinite; }
.vlr-sr-only { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; margin: -1px !important; overflow: hidden !important; clip: rect(0, 0, 0, 0) !important; white-space: nowrap !important; border: 0 !important; }

@keyframes vlr-spin { to { transform: rotate(360deg); } }

@media (max-width: 760px) {
  .vlr-app { padding: 18px 14px; }
  .vlr-app--reader { min-height: 480px; padding: 0; }
  .vlr-auth-shell { width: min(520px, 100%); margin-top: 8px; grid-template-columns: 82px minmax(0, 1fr); align-items: start; gap: 16px; }
  .vlr-auth-cover { padding-top: 34px; }
  .vlr-auth-header { margin-bottom: 16px; }
  .vlr-auth-title { font-size: 2rem; }
  .vlr-auth-subtitle { font-size: 0.82rem; }
  .vlr-reader-header { min-height: 52px; gap: 8px; padding: 7px 9px; }
  .vlr-reader-header__identity { display: block; min-width: 80px; }
  .vlr-reader-title { font-size: 0.95rem; }
  .vlr-reader-status { font-size: 0.68rem; }
  .vlr-reader-menu { gap: 4px; }
  .vlr-menu-link { display: none; }
  .vlr-menu-button { min-height: 32px; padding: 5px 7px; font-size: 0.7rem; }
  .vlr-menu-button--quiet { width: 45px; max-width: 45px; height: 32px; min-height: 32px; padding: 0; overflow: hidden; font-size: 0.68rem; line-height: 1; white-space: nowrap; }
  .vlr-select.vlr-zoom-select { width: 88px; min-height: 32px; padding-left: 7px; padding-right: 20px; font-size: 0.69rem; }
  .vlr-page-surface { padding: 10px; }
  .vlr-page-spread { gap: 0; }
  .vlr-page-spread--double::after { display: none; }
  .vlr-reader-cover--page { max-width: calc(100vw - 20px); }
  .vlr-reader-cover--width { width: 100%; }
  .vlr-pager { grid-template-columns: auto minmax(0, 1fr) auto; gap: 7px; min-height: 82px; padding-top: 8px; }
  .vlr-pager-button { min-width: 52px; min-height: 42px; padding: 7px 9px; font-size: 0.76rem; }
  .vlr-pager-center { grid-template-columns: 1fr; gap: 3px; }
  .vlr-page-field { justify-content: center; font-size: 0.7rem; }
  .vlr-page-input { width: 48px; height: 30px; font-size: 0.76rem; }
  .vlr-progress-slider { height: 14px; }
}

@media (max-width: 480px) {
  .vlr-auth-shell { display: block; }
  .vlr-auth-cover { float: left; width: 72px; margin: 4px 14px 8px 0; padding: 0; }
  .vlr-auth-header { min-height: 112px; }
  .vlr-auth-card { clear: both; padding: 21px 18px; }
  .vlr-auth-form__row { grid-template-columns: 1fr; }
  .vlr-auth-form__row .vlr-button { width: 100%; }
  .vlr-reader-status { max-width: 112px; overflow: hidden; text-overflow: ellipsis; }
  .vlr-menu-button:first-child { padding-inline: 6px; }
  .vlr-select.vlr-zoom-select { width: 82px; }
}

@media (prefers-reduced-motion: reduce) {
  #vlr-app *, #vlr-app *::before, #vlr-app *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}

@media print { #vlr-app { display: none !important; } }