@charset "UTF-8";

/* ================= App frame ================= */

.app {
  position: relative;
  width: 100%;
  min-height: 100%;
  max-width: 480px;
  margin: 0 auto;
  /* 背景の ambient グローがガラスの backdrop-filter に透けるよう透過 */
  background-color: transparent;
}

.screen {
  display: none;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
  padding-top: var(--safe-area-top);
  padding-bottom: calc(var(--safe-area-bottom) + var(--ad-banner-height, 0px));
  padding-left: var(--safe-area-left);
  padding-right: var(--safe-area-right);
}

/* カメラ画面はバナーを非表示にするためパディング不要 */
.screen--camera {
  padding-bottom: var(--safe-area-bottom);
}

.screen.is-active { display: flex; }

/* ================= Top bar ================= */

.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) var(--space-3);
  min-height: 56px;
  gap: var(--space-2);
}

/* Home: ガラスピルと右スタックの上端を揃える */
.screen--home .top-bar {
  align-items: flex-start;
}

/* Home: compact glass pill — hearts + timer only (height matches btn-menu) */
.top-bar__glass-card {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  box-sizing: border-box;
  flex: 0 1 auto;
  min-width: 0;
  width: fit-content;
  /* 50% だと語句が収まらず左右からはみ出す — メニューボタン分を除いた残り幅まで */
  max-width: calc(100% - 52px);
  height: var(--top-bar-glass-size);
  min-height: var(--top-bar-glass-size);
  padding: 0 14px;
  border-radius: 999px;
  overflow: hidden;
  background: var(--glass-gradient);
  border: var(--glass-border);
  box-shadow: var(--glass-shadow-bar);
  -webkit-backdrop-filter: var(--glass-backdrop);
  backdrop-filter: var(--glass-backdrop);
}

/* 上縁のきらめき（クリスタルの光の筋） */
.top-bar__glass-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 55%;
  background: var(--glass-shine);
  border-radius: 999px;
  pointer-events: none;
  opacity: 0.85;
}

.top-bar__glass-card .timer {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  min-width: 0;
  font-size: 12px;
  line-height: 1;
}

.top-bar__glass-card #recovery-timer-text {
  min-width: 0;
}

.top-bar__glass-card .icon-sm {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

/* Lives | timer — visual separator with breathing room */
.top-bar__glass-sep {
  flex-shrink: 0;
  align-self: stretch;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  color: rgba(120, 120, 112, 0.45);
  font-size: 13px;
  font-weight: 300;
  line-height: 1;
  user-select: none;
}

/* Hearts: glass card — size, alignment, filled vs outline look */
.top-bar__glass-card .hearts {
  flex-shrink: 0;
  gap: 9px;
  /* stroke / drop-shadow のわずかなはみ出しを内側に収める */
  padding: 0 1px;
}

.top-bar__glass-card .hearts .heart {
  width: 15px;
  height: 15px;
}

.top-bar__glass-card .hearts .heart svg {
  width: 15px;
  height: 15px;
  transform: translateY(-0.5px);
}

.top-bar__glass-card .hearts .heart:not(.is-empty) svg {
  filter: drop-shadow(0 1px 1px rgba(232, 93, 142, 0.28));
}

.top-bar__glass-card .hearts .heart.is-empty {
  color: rgba(120, 120, 112, 0.5);
}

.top-bar__glass-card .hearts .hearts-extra {
  font-size: 12px;
}

body.math-mode-active .screen--home .top-bar__glass-card {
  background: rgba(255, 255, 255, 0.30);
  border-color: rgba(255, 255, 255, 0.48);
  box-shadow:
    0 14px 38px rgba(22, 104, 150, 0.11),
    0 4px 14px rgba(24, 74, 115, 0.06),
    inset 0 1px 0 rgba(255, 255, 255, 0.34);
  -webkit-backdrop-filter: blur(22px) saturate(1.25);
  backdrop-filter: blur(22px) saturate(1.25);
}

body.math-mode-active .screen--home .top-bar__glass-card::before {
  opacity: 0.18;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.60) 0%,
    rgba(255, 255, 255, 0.16) 62%,
    rgba(255, 255, 255, 0) 100%
  );
}

body.math-mode-active .screen--home .top-bar__glass-card .timer {
  color: #146A90;
}

body.math-mode-active .screen--home .top-bar__glass-sep {
  color: rgba(20, 106, 144, 0.45);
}

.top-bar--overlay {
  position: absolute;
  top: var(--safe-area-top);
  left: 0;
  right: 0;
  z-index: 2;
}

/* ================= Home ================= */

.screen--home {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.screen--home .top-bar,
.screen--home .home-main {
  position: relative;
  z-index: 1;
}

.btn-delete-account {
  background: none;
  border: none;
  padding: var(--space-1) var(--space-2);
  font-size: 11px;
  color: var(--danger);
  opacity: 0.5;
  cursor: pointer;
  line-height: 1;
  transition: opacity 0.15s;
  -webkit-tap-highlight-color: transparent;
}

.btn-delete-account:hover,
.btn-delete-account:focus-visible {
  opacity: 0.9;
}

/* index.html (login page): 右下固定表示 */
body.login-page > .btn-delete-account {
  position: fixed;
  bottom: calc(var(--space-2) + var(--safe-area-bottom));
  right: calc(var(--space-2) + var(--safe-area-right));
  z-index: 10;
}

/* main.html のドロワー最下部行 */
.app-drawer__delete-row {
  display: flex;
  justify-content: flex-end;
  padding: var(--space-2) var(--space-2) 0;
}

.home-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-3) var(--space-5);
}

.auth-card {
  width: min(100%, 360px);
}

/* ================= Camera ================= */

.screen--camera { background-color: #1A1A1A; }

.camera-stage {
  flex: 1;
  position: relative;
  overflow: hidden;
  background-color: #0E0E0E;
}

.camera-preview {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.camera-fallback {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.35);
  font-size: 13px;
}

.camera-controls {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding: var(--space-3) var(--space-4) calc(var(--space-4) + var(--safe-area-bottom));
  background-color: #0E0E0E;
}

/* ================= OCR preview ================= */

.ocr-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: 0 var(--space-3) var(--space-4);
}

.ocr-thumb {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--bg-2);
  height: 140px;
}

.ocr-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.ocr-text-card {
  position: relative;
  flex: 1;
  background-color: var(--bg-2);
  border-radius: var(--radius-lg);
  padding: var(--space-3);
  min-height: 260px;
}

/* ================= Game ================= */

.game-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: var(--space-3) var(--space-3) var(--space-4);
  gap: var(--space-4);
}

.game-sentence {
  position: relative;
  font-size: 17px;
  line-height: 2.1;
  color: var(--text);
  margin: var(--space-3) 0 0;
  padding: var(--space-3) var(--space-4);
  word-break: break-word;
  border-radius: var(--glass-radius-panel);
  background: var(--glass-gradient);
  border: var(--glass-border);
  box-shadow: var(--glass-shadow-panel);
  -webkit-backdrop-filter: var(--glass-backdrop);
  backdrop-filter: var(--glass-backdrop);
  overflow: hidden;
  isolation: isolate;
}

.game-sentence::before {
  content: "";
  position: absolute;
  top: 0;
  left: 6%;
  right: 6%;
  height: 46%;
  background: var(--glass-shine);
  border-radius: var(--glass-radius-panel) var(--glass-radius-panel) 50% 50%
    / var(--glass-radius-panel) var(--glass-radius-panel) 100% 100%;
  pointer-events: none;
  opacity: 0.8;
  z-index: -1;
}

/* ================= Result ================= */

.result-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-3);
  text-align: center;
}

.result-actions {
  display: flex;
  gap: var(--space-2);
}

/* ================= History ================= */

.history-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: var(--space-2) var(--space-3) var(--space-4);
  overflow-y: auto;
}

.history-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.history-empty {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-2);
  font-size: 14px;
  margin: 0;
}

/* ================= Loading overlay ================= */

.loading-overlay {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background-color: rgba(246, 245, 242, 0.85);
  z-index: 1000;
  color: var(--text-2);
  font-size: 14px;
  flex-direction: column;
  gap: var(--space-2);
}

.loading-overlay.is-visible { display: flex; }

.loading-spinner {
  width: 28px;
  height: 28px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}

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

/* ================= Answer Review ================= */

.result-reveal-wrap {
  width: 100%;
  max-width: 280px;
  margin-top: var(--space-1);
}

.result-reveal-wrap .btn-outline {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.screen--answers .answers-main {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

/* 数学答え合わせ画面の解法バッジ */
.answer-method-badge {
  align-self: flex-start;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-light);
  border-radius: 999px;
  padding: 4px 16px;
  letter-spacing: 0.03em;
  margin-bottom: var(--space-1);
}

.answer-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 14px var(--space-3);
  background: var(--glass-gradient);
  border: var(--glass-border);
  border-radius: 14px;
  -webkit-backdrop-filter: var(--glass-backdrop);
  backdrop-filter: var(--glass-backdrop);
}

.answer-item__label {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-2);
  width: 22px;
  flex-shrink: 0;
}

.answer-item__body {
  flex: 1;
  min-width: 0;
}

.answer-item__correct {
  font-size: 16px;
  font-weight: 600;
  color: #6fa68b;
}

.answer-item__user-row {
  font-size: 12px;
  color: var(--text-2);
  margin-top: 2px;
}

.answer-item__badge {
  font-size: 18px;
  flex-shrink: 0;
}

.answer-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.answer-section__title {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-2);
  letter-spacing: 0.04em;
  padding-left: 4px;
}

.answer-section__body {
  padding: 14px var(--space-3);
  background: var(--glass-gradient);
  border: var(--glass-border);
  border-radius: 14px;
  -webkit-backdrop-filter: var(--glass-backdrop);
  backdrop-filter: var(--glass-backdrop);
  font-size: 15px;
  line-height: 1.7;
}

.answer-section__body--question {
  white-space: pre-wrap;
}

.answer-section__body--correct {
  color: #6fa68b;
  font-weight: 600;
  font-size: 18px;
}

.answer-section__steps {
  padding: 14px var(--space-3) 14px calc(var(--space-3) + 1.4em);
  background: var(--glass-gradient);
  border: var(--glass-border);
  border-radius: 14px;
  -webkit-backdrop-filter: var(--glass-backdrop);
  backdrop-filter: var(--glass-backdrop);
  font-size: 14px;
  line-height: 1.7;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin: 0;
}

.answer-question__blank {
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
  padding: 0 2px;
}