@import url('https://fonts.googleapis.com/css?family=Noto+Sans:400,700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Oxanium&display=swap');

/* Generic defaults (overridden by theme files) */
:root {
  --background: #f5f5f5;
  --foreground: #333;
  --primary: #b01e73;
  --primary-hover: #92175f;
  --card-bg: #ffffff;
  --card-shadow: 0 4px 16px rgba(0,0,0,0.15);
  --card-border: 1px solid transparent;
  --text-primary: c;
  --text-secondary: #ffffff;
  --accent: #ffe082;
  --border-radius: 18px;
  --border-radius-sm: 6px;
  --shadow-sm: 0 4px 16px rgba(0,0,0,0.15);
  --spacing-xs: 5px;
  --spacing-sm: 12px;
  --spacing-md: 24px;
  --spacing-lg: 36px;
  --font-family: 'Noto Sans', Arial, sans-serif;
  --font-weight-normal: 400;
  --font-weight-bold: 700;
  --header-text: #333;
  --header-link: #b01e73;
  --header-link-hover: #92175f;
}

/* Shared styles using variables */
* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  font-family: var(--font-family);
  background: var(--background);
  margin: 0;
  padding: 0;
  color: var(--foreground);
  transition: background 0.3s ease, color 0.3s ease;
}

.main-layout {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

h1 {
  font-size: 0.3em;
  text-align: center;
  margin-top: var(--spacing-lg);
  margin-bottom: 0;
  font-family: var(--font-family);
  font-weight: var(--font-weight-bold);
}

/* Header */
.header {
  padding: 20px;
  max-width: 400px;
  margin: 0 auto;
}

.header-inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.header h1 {
  font-size: 26px;
  font-weight: 600;
  color: var(--header-text); 
  font-family: var(--font-family);
}

.app-title {
  font-size: 20px;
  font-weight: 400;
  color: var(--header-text);
  margin: 0;
  font-family: var(--font-family);
}

.header-links {
  display: flex;
  gap: 20px;
  align-items: baseline;
}

.header-links a {
  color: var(--header-link);
  text-decoration: none;
  font-size: 1.1rem;
  font-weight: 500;
  font-family: var(--font-family);
  text-decoration: underline;
}

.header-links a:hover {
  color: var(--header-link-hover);
  text-decoration: underline;
}

#settings-link {
  text-decoration: none;
  font-size: 1.7rem;
}

#game-container {
  margin-top: var(--spacing-lg);
  margin-bottom: 0;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}
/* outer wrapper */
.flip-card-outer {
  width: 340px;
  max-width: 95vw;
  margin: 0;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 180px;
  height: auto;
}

/* Container only sets perspective, no border/shadow */
.flip-card {
  width: 100%;
  position: relative;
  min-height: 180px;
  perspective: 1200px;
}

/* Faces wrapper */
.flip-card-inner {
  width: 100%;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.6s cubic-bezier(0.8,1,.2,1);
}

/* When flipped, rotate the faces wrapper */
.flip-card.flipped .flip-card-inner {
  transform: rotateY(180deg);
}

/* Front and back share styles */
.flip-card-front,
.flip-card-back {
  width: 100%;
  border-radius: var(--border-radius);
  border: var(--card-border, 1px solid transparent);
  box-shadow: var(--card-shadow, var(--shadow-sm));
  background: var(--card-bg);

  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 1.4em;
  padding: 32px 24px;
  font-weight: var(--font-weight-normal);
  font-family: var(--font-family);
  box-sizing: border-box;
  word-break: break-word;

  backface-visibility: hidden;
  transition: background 0.3s;
}

/* FRONT: sits on top, stretches to whatever height back has */
.flip-card-front {
  position: absolute;
  inset: 0;
  z-index: 2;
  color: var(--text-primary);
  background: var(--card-bg);
}

/* BACK: normal flow, controls the height */
.flip-card-back {
  position: relative;          /* was absolute */
  transform: rotateY(180deg);
  background: var(--primary);
  color: var(--text-secondary);

  /* allow extreme cases to scroll, optional */
  max-height: 70vh;
  overflow-y: auto;
}

.back-english {
  font-size: 0.9em;
  color: var(--accent);
  background: rgba(255,255,255,0.07);
  border-radius: var(--border-radius-sm);
  margin-bottom: 12px;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-weight: var(--font-weight-normal);
  width: 100%;
  text-align: center;
  box-sizing: border-box;
  font-family: var(--font-family);
}

.back-meaning {
  font-size: 0.7em;
  color: var(--text-secondary);
  margin-bottom: 0;
  width: 100%;
  text-align: center;
  box-sizing: border-box;
  font-family: var(--font-family);
  font-weight: var(--font-weight-normal);
}

#next-btn {
  padding: 12px 40px;
  font-size: 1.1em;
  border-radius: var(--button-radius, 10px);
  border: none;
  background: var(--primary);
  color: var(--text-secondary);
  cursor: pointer;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  display: block;
  font-family: var(--font-family);
  font-weight: var(--font-weight-normal);
  transition: background 0.2s;
}

#next-btn:hover {
  background: var(--primary-hover);
}

.primary-btn {
  padding: 12px 40px;
  font-size: 1.1em;
  border-radius: var(--button-radius, 10px);
  border: none;
  background: var(--primary);
  color: var(--text-secondary);
  cursor: pointer;
  display: block;
  font-family: var(--font-family);
  font-weight: var(--font-weight-normal);
  transition: background 0.2s;
  margin: 16px auto 0;   /* add this line */
}


.primary-btn:hover {
  background: var(--primary-hover);
}


/* Theme switcher */
.theme-switcher {
  display: flex;
  gap: 0.5rem;
  margin: var(--spacing-lg) 0;
  justify-content: center;
}

.theme-switcher button {
  padding: 0.5rem 1rem;
  border: 1px solid var(--primary);
  background: var(--background);
  color: var(--foreground);
  cursor: pointer;
  border-radius: var(--border-radius-sm);
  font-family: var(--font-family);
}

/* Fixed gray bar for theme buttons */
.theme-bar {
  position: sticky;
  top: 0;
  z-index: 10;
  width: 100%;
  background: #e5e5e5;
  padding: 12px 20px;
  display: flex;
  justify-content: center;
  gap: 12px;
}

/* Base style for theme buttons */
.theme-btn {
  min-width: 110px;
  padding: 8px 16px;
  font-family: var(--font-family);
  font-size: 14px;
  border-radius: 4px;
  border: 2px solid #ccc;
  background: #fff;
  color: #333;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

/* Default theme button look */
.theme-btn-default {
  border-radius: 10px;
  border-color: #b01e73;
  color: #92175f;
  font-family: 'Noto Sans', Arial, sans-serif;
}

/* Brutalist theme button look */
.theme-btn-brutalist {
  border-radius: 0;
  border-color: rgb(0, 0, 0);
  color: #158d4b;
  box-shadow: 2px 2px 0px hsl(0 0% 0% / 1);
  font-family: 'Geo', Courier, monospace;
}

/* Hover states */
.theme-btn-default:hover {
  background: #c3ecff;
}

.theme-btn-brutalist:hover {
  background: #ffe1e1;
}

/* Feedback form inside modal */
.about-modal-body form {
  margin-top: 12px;
}

.about-modal-body label {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 4px;
  font-weight: 500;
}

.about-modal-body input[type="email"],
.about-modal-body textarea {
  width: 100%;
  box-sizing: border-box;
  padding: 8px 10px;
  margin-bottom: 12px;
  border-radius: 8px;
  border: 1px solid #ddd;
  font-family: var(--font-family);
  font-size: 0.95rem;
}

.about-modal-body textarea {
  min-height: 100px;
  resize: vertical;
}


/* About modal – aligned with source styles */
.about-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0,0,0,0.6);
  z-index: 1000;
  display: none;
  justify-content: center;
  align-items: flex-start;
  padding: 20px 16px 16px;
  box-sizing: border-box;
}

.about-modal-overlay.open {
  display: flex;
}

.about-modal {
  background-color: #ffffff;
  width: 100%;
  max-width: 400px;
  max-height: 75vh;
  min-height: 580px;
  padding: 16px;
  border-radius: 12px;
  position: relative;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  z-index: 1001;
  pointer-events: auto;
  color: #333;
}

.about-modal-close {
  position: absolute;
  top: 8px;
  right: 8px;
  font-size: 20px;
  background: none;
  border: none;
  cursor: pointer;
  color: #888;
}

.about-modal-close:hover {
  color: #000;
}

.about-modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 4px 4px 12px 4px;
}

.about-header-main {
  display: flex;
  flex-direction: column;
  align-items: flex-start;  /* keep title left */
  gap: 4px;
}

.about-modal-title {
  font-size: 18px;
  font-weight: var(--font-weight-bold);
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0;
}

.about-modal-lang-btn {
  font-size: 18px;
  background: none;
  border: none;
  cursor: pointer;
  opacity: 0.4;
}

.about-modal-lang-btn.active {
  opacity: 1;
}

/* scrollable body, force left aligned */
.about-modal-body {
  overflow-y: auto;
  flex: 1;
  margin-top: 10px;
  max-height: calc(90vh - 140px);
  width: 100%;
  box-sizing: border-box;
  scrollbar-width: none;
  font-size: 14px;
  line-height: 1.5;
  padding: 5px; 
  text-align: left !important;
}

.about-modal-body::-webkit-scrollbar {
  display: none;
}

.about-modal-body p {
  margin: 0;
  text-align: left !important;
}

/* bottom email + support button */
.about-modal-bottom {
  align-self: center;
  margin-top: 8px;
  margin-bottom: 20px;
  text-align: center;
  font-size: 13px;
}

/* old email link style (kept in case used elsewhere) */
.about-modal-email {
  display: inline-block;
  font-size: 13px;
  color: var(--primary);
  text-decoration: underline;
  margin-bottom: 12px;
}

/* support button styled like floating-support-button */
.support-button-placeholder {
  display: inline-block;
  padding: 12px 16px;
  border-radius: 999px;
  background-color: var(--primary);
  color: #fff;
  border: none;
  font-weight: 500;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  cursor: pointer;
  font-size: 14px;
  white-space: nowrap;
  transition: transform 0.1s ease, box-shadow 0.1s ease, background-color 0.1s ease;
}

.support-button-placeholder:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 16px rgba(0,0,0,0.2);
  background-color: var(--primary-hover);
}

/* ========================= */
/* NEW: ABOUT FEEDBACK STYLES */
/* ========================= */

.about-modal-button {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 999px;
  background-color: #ffffff;
  color: var(--primary);
  border: 1px solid var(--primary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  margin-right: 8px;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.about-modal-button:hover {
  background-color: var(--primary);
  color: #ffffff;
}

.about-contact-text {
  margin-bottom: 10px;
  font-size: 13px;
}

#feedback-view form {
  margin-top: 8px;
}

#feedback-view label {
  display: block;
  font-size: 12px;
  margin-bottom: 4px;
}

#feedback-view input,
#feedback-view textarea {
  width: 100%;
  box-sizing: border-box;
  padding: 8px 10px;
  margin-bottom: 10px;
  border-radius: 8px;
  border: 1px solid #ddd;
  font-family: var(--font-family);
  font-size: 13px;
}

.about-contact-submit:hover:not(:disabled) {
  background-color: var(--primary-hover);
  transform: translateY(-1px);
}

.about-contact-submit:disabled {
  opacity: 0.7;
  cursor: default;
}

.about-contact-back {
  margin-top: 10px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid #ccc;
  background: #fff;
  cursor: pointer;
  font-size: 13px;
}

.about-contact-note {
  margin-top: 8px;
  font-size: 12px;
}

.about-header-back {
  position: absolute;
  left: 8px;
  top: 8px;
  border: none;
  background: transparent;
  color: var(--header-link);
  font-size: 13px;
  cursor: pointer;
}

.about-back-row {
  width: 100%;
}

.about-back-btn {
  width: 100%;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid #ccc;
  background: #fff;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  color: var(--header-link);
}

/* Tap hint badge (first visit only) */
.tap-hint-badge {
  position: absolute;
  bottom: -18px;
  right: -18px;
  width: 102px;
  height: 102px;
  border-radius: 999px;
  border: none;
  background-color: #b01e7383;
  color: #ffffff;
  font-size: 36px;
  font-weight: 600;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  cursor: default;
  pointer-events: none;

  /* hidden by default */
  opacity: 0;
  transform: translateY(8px) scale(0.9);
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.tap-hint-badge span {
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 9px;
}

/* only when JS adds .show-tap-hint */
.show-tap-hint .tap-hint-badge {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* Settings modal */
.settings-section {
  margin-bottom: 1.2rem;
}
.settings-section h3 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0 0 0.5rem;
  opacity: 0.55;
}
.settings-section label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
  cursor: pointer;
  font-size: 1rem;
}
.settings-section input[type="checkbox"],
.settings-section input[type="radio"] {
  accent-color: var(--color-primary);
  width: 1rem;
  height: 1rem;
  cursor: pointer;
}