/* This makes sizing easier to understand. */
* {
  box-sizing: border-box;
}

/* This styles the whole page. */
body {
  margin: 0;
  min-height: 100vh;
  padding: 18px;
  padding-top: max(18px, env(safe-area-inset-top));
  padding-right: max(18px, env(safe-area-inset-right));
  padding-bottom: max(18px, env(safe-area-inset-bottom));
  padding-left: max(18px, env(safe-area-inset-left));
  color: #1f2937;
  /* This gradient fills the whole screen with soft pastel colors. */
  /* The first color is soft teal for the top-left corner. */
  /* The middle color is pastel blue for a calm, friendly look. */
  /* The last color is soft peach-pink for the bottom-right corner. */
  background: linear-gradient(135deg, #8FD3D8 0%, #CFE8FF 50%, #F4B8A8 100%);
  display: flex;
  justify-content: center;
  align-items: center;
}

/* This full-page layer holds the faded travel decorations. */
/* pointer-events: none means the decorations never block buttons or flashcards. */
.travel-decorations {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

/* These shared styles keep decorative items near the page edges and subtle. */
.travel-decor {
  position: absolute;
  user-select: none;
}

/* Dashed airplane routes add movement without covering the main card. */
.route {
  position: absolute;
  width: 320px;
  height: auto;
  fill: none;
  stroke: #2563eb;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-dasharray: 8 10;
  opacity: 0.18;
}

.route-top {
  top: 5%;
  left: 14%;
  transform: rotate(-5deg);
}

.route-bottom {
  right: 12%;
  bottom: 4%;
  stroke: #be123c;
  transform: rotate(4deg);
}

/* Passport stamps use soft ink colors and a dashed border. */
.stamp {
  padding: 6px 10px;
  color: #1d4ed8;
  background-color: rgba(239, 246, 255, 0.44);
  border: 2px dashed #1d4ed8;
  border-radius: 8px;
  box-shadow: 0 6px 14px rgba(37, 99, 235, 0.08);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  opacity: 0.26;
}

.stamp-one {
  top: 9%;
  left: 4%;
  transform: rotate(-12deg);
}

.stamp-two {
  right: 6%;
  bottom: 11%;
  color: #be123c;
  border-color: #be123c;
  background-color: rgba(255, 241, 242, 0.44);
  transform: rotate(10deg);
}

/* Travel sticker SVGs have soft paper fills and simple ink-like details. */
.sticker {
  width: 54px;
  height: 54px;
  opacity: 0.23;
  filter: drop-shadow(0 5px 8px rgba(31, 41, 55, 0.08));
}

.sticker-paper {
  fill: #fff7ed;
  stroke: #fed7aa;
  stroke-width: 3;
}

.sticker-detail {
  fill: none;
  stroke: #1d4ed8;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.globe-icon .sticker-paper {
  fill: #eff6ff;
  stroke: #bfdbfe;
}

.globe-icon .sticker-detail {
  stroke: #0f766e;
  stroke-width: 2.6;
}

.compass-icon .sticker-paper {
  fill: #f0fdfa;
  stroke: #99f6e4;
}

.compass-icon .sticker-detail {
  stroke: #be123c;
  stroke-width: 2.8;
}

.sticker-plane {
  top: 19%;
  right: 10%;
  transform: rotate(14deg);
}

.sticker-bag {
  bottom: 24%;
  left: 5%;
  transform: rotate(-8deg);
}

.globe-icon {
  bottom: 5%;
  left: 14%;
}

.compass-icon {
  right: 11%;
  bottom: 28%;
  transform: rotate(-10deg);
}

/* Small SVG flag graphics replace emoji flags and look more like real flags. */
.flag-image {
  width: 48px;
  height: auto;
  opacity: 0.35;
  border-radius: 8px;
  box-shadow: 0 5px 12px rgba(31, 41, 55, 0.12);
  outline: 3px solid rgba(255, 255, 255, 0.45);
}

.flag-france {
  top: 31%;
  left: 3%;
  transform: rotate(-6deg);
}

.flag-japan {
  top: 8%;
  right: 30%;
  transform: rotate(8deg);
}

.flag-india {
  right: 5%;
  bottom: 20%;
  transform: rotate(-7deg);
}

.flag-brazil {
  right: 5%;
  top: 43%;
  transform: rotate(7deg);
}

.flag-kenya {
  left: 9%;
  bottom: 18%;
  transform: rotate(9deg);
}

.flag-australia {
  right: 25%;
  bottom: 6%;
  transform: rotate(-8deg);
}

/* Landmark stickers are still subtle, but use fills and white outlines for polish. */
.landmark {
  position: absolute;
  width: 88px;
  height: auto;
  color: #0f766e;
  opacity: 0.19;
  filter: drop-shadow(0 6px 10px rgba(31, 41, 55, 0.08));
}

.landmark-sticker {
  fill: none;
  stroke: rgba(255, 255, 255, 0.82);
  stroke-width: 12;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.landmark-fill {
  fill: currentColor;
}

.landmark-line {
  fill: none;
  stroke: #334155;
  stroke-width: 3.2;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.5;
}

.landmark-eiffel {
  right: 17%;
  bottom: 3%;
}

.landmark-liberty {
  top: 7%;
  left: 17%;
  color: #1d4ed8;
}

.landmark-taj {
  left: 25%;
  bottom: 5%;
  width: 108px;
  color: #0f766e;
}

.landmark-colosseum {
  top: 66%;
  left: 2%;
  width: 104px;
  color: #b45309;
}

.landmark-opera {
  top: 47%;
  right: 2%;
  width: 106px;
  color: #be123c;
}

/* This uses only local/system fonts so the app can run offline. */
body,
button {
  font-family: "Trebuchet MS", Arial, sans-serif;
  font-weight: 400;
}

/* This styles the white card in the middle. */
.game-card {
  position: relative;
  z-index: 1;
  /* A slimmer width makes the home screen feel more like a phone app screen. */
  width: min(100%, 360px);
  padding: 28px 24px;
  text-align: center;
  background-color: white;
  border-radius: 8px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.18);
  /* Long words and messages can wrap instead of pushing outside the card. */
  overflow-wrap: anywhere;
}

/* This styles the main title. */
h1 {
  margin: 0;
  color: #2563eb;
  font-size: 2rem;
  font-weight: 700;
}

/* This subtle creator signature keeps the welcome screen personal without overpowering the game title. */
.creator-signature {
  margin: 0;
  color: #64748b;
  font-size: 0.86rem;
  font-weight: 400;
  line-height: 1.35;
  text-align: center;
}

.welcome-creator-signature {
  margin-top: 10px;
}

.about-creator-signature {
  margin-top: 6px;
}

/* This positions the coin badge and Store button together in the top-right corner. */
/* position: fixed keeps both game rewards visible while the player changes screens. */
.top-game-bar {
  position: fixed;
  top: max(16px, env(safe-area-inset-top));
  right: max(16px, env(safe-area-inset-right));
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

/* This keeps the coin counter as a small rounded badge. */
#coin-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 74px;
  margin: 0;
  padding: 8px 14px;
  color: #b45309;
  background-color: #fff7ed;
  border: 2px solid #fed7aa;
  border-radius: 999px;
  box-shadow: 0 8px 18px rgba(180, 83, 9, 0.18);
  font-size: 1.1rem;
  font-weight: 700;
}

/* This styles the welcome message. */
p {
  font-size: 1.1rem;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

/* This class hides something on the page. */
.hidden {
  display: none;
}

/* This styles the learning section title. */
h2 {
  margin-top: 24px;
  color: #0f766e;
  font-size: 1.4rem;
  font-weight: 700;
}

/* This section holds the profile choices before the game starts. */
.profile-section {
  margin-top: 8px;
}

/* This stacks the three welcome buttons in a centered, app-like column. */
.welcome-options {
  display: grid;
  gap: 12px;
  width: min(100%, 268px);
  margin: 18px auto 0;
}

/* These buttons are narrower than the card but still easy to tap on a phone. */
.welcome-option {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  min-height: 72px;
  padding: 12px 14px;
  font-size: 1.08rem;
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  white-space: normal;
  overflow-wrap: anywhere;
  border: 2px solid transparent;
  border-radius: 8px;
  cursor: pointer;
}

/* The icon is a little larger than the label so each home button feels playful. */
.welcome-option-icon {
  flex: 0 0 auto;
  font-size: 1.35rem;
  line-height: 1;
}

.option-existing {
  color: #1d4ed8;
  background-color: #eff6ff;
  border-color: #bfdbfe;
}

.option-create {
  color: #0f766e;
  background-color: #f0fdfa;
  border-color: #99f6e4;
}

.option-guest {
  color: #be123c;
  background-color: #fff1f2;
  border-color: #fecdd3;
}

/* This gives friendly feedback when the welcome buttons are hovered or focused. */
.welcome-option:hover,
.welcome-option:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.16);
}

/* This small secondary action opens app information from the welcome screen. */
.about-button {
  margin-top: 16px;
  padding: 9px 18px;
  color: #1d4ed8;
  background-color: white;
  border: 2px solid #bfdbfe;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
}

.about-button:hover,
.about-button:focus-visible {
  background-color: #eff6ff;
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.12);
}

/* This panel appears when choosing or creating a profile. */
.profile-choice-panel {
  margin-top: 20px;
  padding: 16px;
  background-color: #f8fafc;
  border: 2px solid #e0f2fe;
  border-radius: 8px;
}

/* This styles the smaller panel title. */
h3 {
  margin: 0 0 12px;
  color: #2563eb;
  font-size: 1.18rem;
  font-weight: 700;
}

/* This keeps the About screen readable inside the same mobile-friendly card. */
.about-section {
  text-align: left;
}

.about-section h3 {
  text-align: center;
}

.about-section p {
  margin: 10px 0;
  color: #334155;
  font-size: 1rem;
}

.about-section h4 {
  margin: 16px 0 8px;
  color: #0f766e;
  font-size: 1.05rem;
  font-weight: 700;
}

.about-feature-list {
  display: grid;
  gap: 7px;
  margin: 0;
  padding-left: 22px;
  color: #1d4ed8;
  font-weight: 700;
}

.about-version {
  color: #be123c;
  font-weight: 700;
  text-align: center;
}

.about-section .small-secondary-button {
  display: block;
  margin-left: auto;
  margin-right: auto;
}

/* This grid keeps saved profile cards neat and easy to tap. */
.profile-list {
  display: grid;
  gap: 10px;
}

/* This makes each saved profile look like a large friendly card. */
.profile-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: 68px;
  padding: 10px;
  font-size: 1.15rem;
  font-weight: 700;
  color: #1d4ed8;
  background-color: #eff6ff;
  border: 2px solid #bfdbfe;
  border-radius: 8px;
}

/* This button loads the profile without touching delete behavior. */
.profile-select-button {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  min-height: 48px;
  padding: 4px;
  color: inherit;
  background: transparent;
  border: none;
  font-size: 1.15rem;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
}

.profile-card-avatar {
  width: 38px;
  height: 38px;
  object-fit: cover;
  border-radius: 8px;
  border: 2px solid white;
  box-shadow: 0 4px 8px rgba(31, 41, 55, 0.12);
}

/* This delete button is visible, but smaller than the safe profile-select action. */
.profile-delete-button {
  padding: 8px 10px;
  color: #be123c;
  background-color: #fff1f2;
  border: 2px solid #fecdd3;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
}

.profile-delete-button:hover,
.profile-delete-button:focus-visible {
  background-color: #ffe4e6;
  border-color: #fb7185;
}

/* These gentle colors make the profile cards playful without being too bright. */
.profile-card:nth-child(2) {
  color: #be123c;
  background-color: #fff1f2;
  border-color: #fecdd3;
}

.profile-card:nth-child(3) {
  color: #0f766e;
  background-color: #f0fdfa;
  border-color: #99f6e4;
}

.profile-card:nth-child(4) {
  color: #b45309;
  background-color: #fff7ed;
  border-color: #fed7aa;
}

.profile-card:nth-child(5) {
  color: #6d28d9;
  background-color: #f5f3ff;
  border-color: #ddd6fe;
}

/* This gives feedback when a profile card is hovered or focused. */
.profile-card:hover,
.profile-card:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.18);
}

/* This confirmation panel appears only after Delete is clicked. */
.delete-profile-dialog {
  margin-top: 14px;
  padding: 14px;
  color: #1f2937;
  background-color: #fff1f2;
  border: 2px solid #fecdd3;
  border-radius: 8px;
  box-shadow: 0 10px 22px rgba(190, 18, 60, 0.12);
}

#delete-profile-name {
  margin: 0 0 8px;
  color: #be123c;
  font-weight: 700;
}

.delete-warning-list {
  margin: 8px 0 0;
  padding-left: 22px;
  text-align: left;
  color: #be123c;
  font-weight: 700;
}

.delete-dialog-actions {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 12px;
}

#confirm-delete-profile-button {
  margin-top: 14px;
  padding: 9px 16px;
  color: white;
  background-color: #be123c;
  border: 2px solid #be123c;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
}

#confirm-delete-profile-button:hover,
#confirm-delete-profile-button:focus-visible {
  background-color: #9f1239;
  border-color: #9f1239;
}

/* This keeps the profile name label easy to read. */
label {
  display: block;
  margin-bottom: 8px;
  color: #0f766e;
  font-weight: 700;
  text-align: left;
}

/* This styles the profile name input. */
#profile-name-input {
  width: 100%;
  padding: 12px;
  color: #1f2937;
  background-color: white;
  border: 2px solid #bfdbfe;
  border-radius: 8px;
  font-size: 1rem;
}

/* This gives the text box a clear focus style. */
#profile-name-input:focus {
  outline: 3px solid #bfdbfe;
  border-color: #2563eb;
}

/* This styles the button that creates a new profile. */
#create-profile-button {
  width: 100%;
  margin-top: 12px;
  padding: 12px 18px;
  color: white;
  background-color: #16a34a;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
}

#create-profile-button:hover {
  background-color: #15803d;
}

/* This styles helpful profile messages. */
#create-profile-message,
#no-profiles-message {
  margin: 12px 0 0;
  color: #be123c;
  font-weight: 700;
}

/* These smaller buttons return to the first welcome choices. */
.small-secondary-button {
  margin-top: 14px;
  padding: 9px 16px;
  color: #1d4ed8;
  background-color: white;
  border: 2px solid #bfdbfe;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
}

.small-secondary-button:hover {
  background-color: #eff6ff;
}

/* This short helper text explains the avatar step without crowding the screen. */
.avatar-help {
  margin: 0 0 14px;
  color: #475569;
  font-size: 1rem;
}

/* This grid displays the landmark avatar choices as large tappable cards. */
.avatar-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

/* Each avatar card looks like a small travel postcard. */
.avatar-card {
  min-height: 168px;
  padding: 8px;
  color: #1f2937;
  background: linear-gradient(180deg, #ffffff 0%, #eff6ff 100%);
  border: 2px solid rgba(191, 219, 254, 0.9);
  border-radius: 8px;
  box-shadow: 0 8px 18px rgba(31, 41, 55, 0.12);
  cursor: pointer;
  overflow: hidden;
}

.avatar-card:hover,
.avatar-card:focus-visible {
  transform: translateY(-3px) rotate(-1deg);
  box-shadow: 0 12px 24px rgba(37, 99, 235, 0.18);
}

/* JavaScript adds this class to show the currently selected avatar. */
.avatar-card.selected {
  background: linear-gradient(180deg, #ffffff 0%, #dbeafe 100%);
  border-color: #2563eb;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.16), 0 12px 24px rgba(37, 99, 235, 0.18);
}

.avatar-image {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  margin-bottom: 8px;
  object-fit: cover;
  border-radius: 8px;
  border: 3px solid white;
  box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.08);
}

.avatar-name {
  display: block;
  min-height: 38px;
  color: #1d4ed8;
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
}

#avatar-message {
  margin: 12px 0 0;
  color: #0f766e;
  font-weight: 700;
}

/* This badge shows the loaded profile's landmark avatar inside the game. */
.profile-settings-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  padding: 8px 12px;
  color: #1d4ed8;
  background-color: #eff6ff;
  border: 2px solid #bfdbfe;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
}

.profile-settings-button:hover {
  background-color: #dbeafe;
}

/* This keeps the profile settings badge hidden until a saved profile is loaded. */
.profile-settings-button.hidden {
  display: none;
}

.profile-avatar-display {
  display: inline-flex;
  width: 32px;
  height: 32px;
}

.profile-avatar-display img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 999px;
  border: 2px solid white;
}

/* This styles the loading message for bundled country data. */
#loading-message {
  color: #2563eb;
  font-weight: bold;
}

/* This styles the error message if bundled country data cannot load. */
#error-message {
  color: #be123c;
  font-weight: bold;
}

/* This holds the continent selector buttons. */
.continent-picker {
  display: grid;
  gap: 8px;
  margin-top: 16px;
}

/* Mix and Match is the first full-width choice, while the continent buttons stay grouped below it. */
.mix-match-button {
  justify-self: center;
  width: min(100%, 280px);
}

/* The OR separator explains that players can choose one mixed set or pick a specific continent. */
.choice-separator {
  display: grid;
  grid-template-columns: minmax(36px, 1fr) auto minmax(36px, 1fr);
  align-items: center;
  gap: 10px;
  width: min(100%, 280px);
  margin: 2px auto;
}

/* Subtle lines visually separate Mix and Match from the grouped continent choices without distracting. */
.choice-separator span {
  height: 2px;
  background-color: #bfdbfe;
  border-radius: 999px;
  opacity: 0.9;
}

.choice-separator strong {
  color: #0f766e;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

/* This keeps the continent-specific options together beneath Mix and Match. */
.continent-options-group {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

/* This styles each continent button. */
.continent-button {
  padding: 8px 12px;
  font-size: 0.95rem;
  font-weight: bold;
  color: #1d4ed8;
  background-color: #eff6ff;
  border: 2px solid #bfdbfe;
  border-radius: 8px;
  cursor: pointer;
}

/* This shows which continent is selected. */
.continent-button.active {
  color: white;
  background-color: #2563eb;
  border-color: #2563eb;
}

/* This changes a continent button when the mouse is over it. */
.continent-button:hover {
  background-color: #dbeafe;
}

.continent-button.active:hover {
  background-color: #1d4ed8;
}

/* This second-step panel separates choosing the country set from choosing Quiz or Flash Cards. */
.new-countries-mode-section {
  margin-top: 18px;
  padding: 14px;
  background-color: #f8fafc;
  border: 2px solid #e0f2fe;
  border-radius: 8px;
}

#new-countries-selection-label {
  margin: 0 0 12px;
  color: #475569;
  font-size: 1rem;
  font-weight: 700;
}

.new-countries-mode-buttons {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.new-countries-mode-buttons button,
#quiz-current-flashcards-button {
  min-height: 52px;
  padding: 12px 14px;
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 800;
  cursor: pointer;
}

#new-countries-quiz-button {
  background-color: #2563eb;
}

#new-countries-quiz-button:hover {
  background-color: #1d4ed8;
}

#new-countries-flashcards-button,
#quiz-current-flashcards-button {
  background-color: #0f766e;
}

#new-countries-flashcards-button:hover,
#quiz-current-flashcards-button:hover {
  background-color: #0f5f59;
}

#quiz-current-flashcards-button {
  width: min(100%, 280px);
  margin: 14px auto 0;
}

/* This holds all of the country flashcards. */
.country-list {
  display: grid;
  gap: 14px;
  margin-top: 16px;
}

/* This makes each flashcard clickable. */
.flashcard {
  position: relative;
  width: 100%;
  height: 84px;
  margin: 0;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  perspective: 800px;
}

/* This inner part is what flips around. */
.flashcard-inner {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  transition: transform 0.6s ease;
  transform-style: preserve-3d;
}

/* JavaScript adds this class when the card is clicked. */
.flashcard.flipped .flashcard-inner {
  transform: rotateY(180deg);
}

/* These styles are shared by the front and back sides. */
.flashcard-front,
.flashcard-back {
  position: absolute;
  inset: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  box-sizing: border-box;
  padding: 0 42px 0 16px;
  border-radius: 8px;
  border: 2px solid #bfdbfe;
  backface-visibility: hidden;
  font-size: 1.1rem;
  font-weight: bold;
  text-align: center;
}

/* The front side shows only the country name. */
.flashcard-front {
  color: #1d4ed8;
  background-color: #eff6ff;
}

/* The back side shows only the capital city. */
.flashcard-back {
  color: #be123c;
  background-color: #fff1f2;
  border-color: #fecdd3;
  transform: rotateY(180deg);
}

/* JavaScript adds "selected" when a country card is tapped. */
.flashcard.selected .flashcard-front,
.flashcard.selected .flashcard-back {
  border-color: #22c55e;
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.18);
}

/* The checkmark lives inside the country-name side of the card. */
/* It stays hidden until JavaScript adds the selected class to that country card. */
.flashcard-checkmark {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 3;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 24px;
  height: 24px;
  font-size: 0.9rem;
  background-color: white;
  border: 2px solid #bbf7d0;
  border-radius: 50%;
  box-shadow: 0 4px 10px rgba(22, 163, 74, 0.18);
  opacity: 0;
  pointer-events: none;
  transform: scale(0.8);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

/* When selected is added, the green checkmark appears. */
.flashcard.selected .flashcard-checkmark {
  opacity: 1;
  transform: scale(1);
}

/* When the card shows the capital side, hide the country-side checkmark. */
/* The selected country stays tracked, so the checkmark returns if the country side is shown again. */
.flashcard.flipped .flashcard-checkmark {
  opacity: 0;
  transform: scale(0.8);
}

/* This adds a clear outline when using the keyboard. */
.flashcard:focus-visible {
  outline: 3px solid #2563eb;
  outline-offset: 4px;
}

/* This keeps the two profile home buttons aligned and the same size. */
.profile-action-buttons {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: stretch;
  gap: 10px;
  width: min(100%, 306px);
  margin: 14px auto 0;
}

/* These shared styles make both home action buttons match neatly. */
#master-list-button,
#practice-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  width: 100%;
  height: 100%;
  min-height: 90px;
  margin-top: 0;
  padding: 12px 10px;
  font-size: 0.96rem;
  font-weight: bold;
  line-height: 1.15;
  text-align: center;
  overflow-wrap: anywhere;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

/* This stacks the emoji above the text on the two main profile action buttons. */
#master-list-button.stacked-action,
#practice-button.stacked-action {
  flex-direction: column;
  gap: 7px;
}

/* This centers the larger icon at the top of each action button. */
.action-button-icon {
  display: block;
  font-size: 1.7rem;
  line-height: 1;
  text-align: center;
}

/* This keeps the button label centered and wrapped cleanly on small screens. */
.action-button-text {
  display: block;
  max-width: 100%;
  text-align: center;
  overflow-wrap: anywhere;
}

/* This styles the button that opens the previous learned countries. */
#master-list-button {
  color: white;
  /* Practice Previous Countries uses the requested friendly blue. */
  background-color: #3B82F6;
}

#master-list-button.hidden {
  display: none;
}

/* This changes the Master List button color when the mouse is over it. */
#master-list-button:hover {
  /* The hover color is a deeper blue so the button feels interactive. */
  background-color: #2563EB;
}

/* On the Previous Countries menu, this same-size button becomes a Back button. */
#master-list-button.back-mode {
  min-height: 77px;
  color: #1d4ed8;
  background-color: white;
  border: 2px solid #bfdbfe;
}

#master-list-button.back-mode:hover {
  background-color: #eff6ff;
}

/* This styles the button that opens the New Countries learning flow. */
#practice-button {
  color: white;
  /* Practice New Countries uses the requested playful pink. */
  background-color: #F472B6;
}

/* On the 5-card New Countries screen, this same button becomes a Back button. */
#practice-button.back-mode {
  color: #1d4ed8;
  background-color: white;
  border: 2px solid #bfdbfe;
}

#practice-button.hidden {
  display: none;
}

/* This changes the Practice button color when the mouse is over it. */
#practice-button:hover {
  /* The hover color is a deeper pink for clear feedback. */
  background-color: #EC4899;
}

#practice-button.back-mode:hover {
  background-color: #eff6ff;
}

/* This Store pill is slightly larger than the coin badge but uses the same rounded style. */
#store-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  margin: 0;
  padding: 9px 16px;
  color: #0f766e;
  background-color: #f0fdfa;
  border: 2px solid #99f6e4;
  border-radius: 999px;
  box-shadow: 0 8px 18px rgba(15, 118, 110, 0.16);
  font-size: 1.02rem;
  font-weight: 700;
  white-space: nowrap;
  cursor: pointer;
}

#store-button:hover {
  background-color: #ccfbf1;
}

#store-button.hidden {
  display: none;
}

/* This World Map pill sits in the top-left, opposite the coin and Store controls. */
#world-map-button {
  position: fixed;
  top: max(16px, env(safe-area-inset-top));
  left: max(16px, env(safe-area-inset-left));
  z-index: 10;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 9px 16px;
  color: #1d4ed8;
  background-color: #eff6ff;
  border: 2px solid #bfdbfe;
  border-radius: 999px;
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.16);
  font-size: 1.02rem;
  font-weight: 700;
  white-space: nowrap;
  cursor: pointer;
}

#world-map-button:hover {
  background-color: #dbeafe;
}

#world-map-button.hidden {
  display: none;
}

/* This smaller Back button sits below the main profile actions and returns to profile choices. */
#profile-home-back-button {
  display: block;
  margin: 20px auto 0;
  padding: 9px 18px;
  color: #1d4ed8;
  background-color: white;
  border: 2px solid #bfdbfe;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
}

#profile-home-back-button:hover {
  background-color: #eff6ff;
}

#profile-home-back-button.hidden {
  display: none;
}

/* This styles the Store screen without changing the learning screens. */
.store-section {
  margin-top: 22px;
  padding: 16px;
  background-color: #fff7ed;
  border: 2px solid #fed7aa;
  border-radius: 8px;
}

/* The heading and coin balance stay close together for quick scanning. */
.store-heading-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.store-heading-row h2 {
  margin: 0;
}

/* This shows the player's current Store coin balance. */
.store-balance {
  margin: 0;
  padding: 7px 12px;
  color: #92400e;
  background-color: #fffbeb;
  border: 2px solid #fde68a;
  border-radius: 999px;
  font-weight: 800;
  white-space: nowrap;
}

.store-message {
  min-height: 24px;
  margin: 6px 0 12px;
  color: #0f766e;
  font-weight: 700;
}

.store-items {
  display: grid;
  gap: 16px;
}

.store-category h3 {
  margin: 0 0 10px;
  color: #be123c;
  font-size: 1.1rem;
}

/* Store items use cards so locked and unlocked choices are easy to compare. */
.store-item-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.store-item-card {
  display: grid;
  gap: 7px;
  align-content: start;
  min-height: 220px;
  padding: 10px;
  background-color: white;
  border: 2px solid #fed7aa;
  border-radius: 8px;
  box-shadow: 0 8px 18px rgba(15, 118, 110, 0.12);
}

.store-item-card.unlocked {
  border-color: #86efac;
  background-color: #f0fdf4;
}

.store-item-preview {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 76px;
  border-radius: 8px;
  overflow: hidden;
  color: white;
  font-weight: 800;
  text-align: center;
}

.store-item-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.preview-passport {
  background: linear-gradient(135deg, #2563eb, #0f766e);
}

.preview-effect {
  background: linear-gradient(135deg, #be123c, #f59e0b);
}

.preview-title {
  background: linear-gradient(135deg, #7c3aed, #2563eb);
}

.store-item-card h4 {
  margin: 0;
  color: #1f2937;
  font-size: 0.98rem;
  line-height: 1.15;
}

.store-item-price,
.store-item-status {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 700;
}

.store-item-price {
  color: #92400e;
}

.store-item-status {
  color: #0f766e;
}

.store-buy-button {
  align-self: end;
  min-height: 38px;
  padding: 8px 10px;
  color: white;
  background-color: #2563eb;
  border: none;
  border-radius: 8px;
  font-weight: 800;
  cursor: pointer;
}

.store-buy-button:hover {
  background-color: #1d4ed8;
}

.store-buy-button:disabled {
  color: #166534;
  background-color: #bbf7d0;
  cursor: default;
}

.store-section .small-secondary-button {
  margin-top: 16px;
}

/* This styles the World Map progress screen. */
.world-map-section {
  margin-top: 24px;
  padding: 16px;
  background-color: #eff6ff;
  border: 2px solid #bfdbfe;
  border-radius: 8px;
}

/* This simple map illustration gives the progress screen a travel feeling. */
.world-map-illustration {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 150px;
  margin: 12px 0;
  border: 2px solid #bfdbfe;
  border-radius: 8px;
  overflow: hidden;
  background:
    radial-gradient(circle at 35% 35%, rgba(143, 211, 216, 0.85), transparent 26%),
    radial-gradient(circle at 68% 58%, rgba(244, 184, 168, 0.72), transparent 28%),
    linear-gradient(135deg, #cfe8ff, #f0fdfa);
}

.world-globe {
  font-size: 4rem;
  filter: drop-shadow(0 8px 12px rgba(15, 118, 110, 0.18));
}

.map-label {
  position: absolute;
  padding: 4px 8px;
  color: #0f766e;
  background-color: rgba(255, 255, 255, 0.82);
  border: 1px solid #99f6e4;
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 800;
}

.map-europe {
  top: 18%;
  left: 43%;
}

.map-asia {
  top: 27%;
  right: 14%;
}

.map-africa {
  top: 55%;
  left: 45%;
}

.map-north-america {
  top: 28%;
  left: 8%;
}

.map-south-america {
  bottom: 13%;
  left: 22%;
}

.map-oceania {
  right: 8%;
  bottom: 16%;
}

.world-map-message {
  min-height: 24px;
  margin: 6px 0 12px;
  color: #be123c;
  font-weight: 700;
}

.world-total-card {
  margin-bottom: 14px;
  padding: 12px;
  color: #0f766e;
  background-color: white;
  border: 2px solid #99f6e4;
  border-radius: 8px;
  box-shadow: 0 8px 18px rgba(15, 118, 110, 0.1);
}

.world-total-card h3,
.world-total-card p {
  margin: 0;
}

.world-total-card p {
  margin-top: 6px;
  font-weight: 800;
}

.world-progress-list {
  display: grid;
  gap: 12px;
}

.world-progress-card {
  padding: 12px;
  background-color: white;
  border: 2px solid #bfdbfe;
  border-radius: 8px;
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.1);
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.world-progress-card:hover,
.world-progress-card:focus-visible {
  border-color: #93c5fd;
  box-shadow: 0 10px 22px rgba(37, 99, 235, 0.14);
  transform: translateY(-1px);
}

.world-progress-card:focus-visible {
  outline: 3px solid #2563eb;
  outline-offset: 3px;
}

.world-progress-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.world-progress-title-row h3,
.world-progress-card p {
  margin: 0;
}

.world-progress-title-row h3 {
  color: #1d4ed8;
  font-size: 1.02rem;
}

.world-progress-title-row span {
  color: #be123c;
  font-weight: 800;
}

.world-progress-bar {
  height: 14px;
  margin: 10px 0 8px;
  background-color: #dbeafe;
  border-radius: 999px;
  overflow: hidden;
}

.world-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #0f766e, #38bdf8, #f4b8a8);
  border-radius: 999px;
}

.world-progress-card p {
  color: #475569;
  font-size: 0.96rem;
  font-weight: 700;
}

/* This hidden list expands only after the player clicks a continent card. */
.world-mastered-list {
  max-height: 0;
  margin: 0;
  padding: 0;
  overflow: hidden;
  color: #334155;
  text-align: left;
  list-style-position: inside;
  opacity: 0;
  transform: translateY(-4px);
  transition: max-height 0.28s ease, margin-top 0.28s ease, opacity 0.2s ease, transform 0.2s ease;
}

/* The expanded card reveals only the mastered country names for that continent. */
.world-progress-card.expanded .world-mastered-list {
  max-height: 240px;
  margin-top: 10px;
  opacity: 1;
  transform: translateY(0);
}

.world-mastered-list li {
  margin: 4px 0;
  font-size: 0.94rem;
  font-weight: 700;
}

.world-map-section .small-secondary-button {
  margin-top: 16px;
}

/* This styles the Previous Countries choice menu. */
.previous-countries-section {
  margin-top: 24px;
  padding: 16px;
  background-color: #eff6ff;
  border: 2px solid #bfdbfe;
  border-radius: 8px;
}

/* This stacks the two Previous Countries choices neatly on phones. */
.previous-countries-menu {
  display: grid;
  gap: 12px;
  width: min(100%, 280px);
  margin: 14px auto 0;
}

/* These buttons open either the learned list or Practice Mode. */
#show-learned-list-button,
#quiz-learned-countries-button {
  min-height: 54px;
  padding: 12px 14px;
  font-size: 1rem;
  font-weight: bold;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

#show-learned-list-button {
  color: white;
  background-color: #0f766e;
}

#show-learned-list-button:hover {
  background-color: #0f5f59;
}

#quiz-learned-countries-button {
  color: white;
  background-color: #2563eb;
}

#quiz-learned-countries-button:hover {
  background-color: #1d4ed8;
}

/* This styles the Master List box. */
.master-list-section {
  margin-top: 24px;
  padding: 16px;
  background-color: #f0fdfa;
  border: 2px solid #99f6e4;
  border-radius: 8px;
}

/* This keeps the Master List neat and easy to read. */
#master-list {
  display: grid;
  gap: 12px;
  margin: 14px 0 0;
  padding-left: 0;
  list-style: none;
}

/* Each Master List item holds one country-capital flip card. */
#master-list li {
  margin: 0;
}

/* This makes each Master List country act like a flashcard. */
.master-flashcard {
  position: relative;
  width: 100%;
  height: 76px;
  margin: 0;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  perspective: 800px;
}

/* This inner part flips between country and capital. */
.master-flashcard-inner {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  transition: transform 0.6s ease;
  transform-style: preserve-3d;
}

/* JavaScript toggles this class when the card is tapped. */
.master-flashcard.flipped .master-flashcard-inner {
  transform: rotateY(180deg);
}

/* These two sides hold the country name and saved capital. */
.master-flashcard-front,
.master-flashcard-back {
  position: absolute;
  inset: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  box-sizing: border-box;
  padding: 0 44px 0 16px;
  border-radius: 8px;
  border: 2px solid #99f6e4;
  backface-visibility: hidden;
    font-size: 1.05rem;
    font-weight: bold;
    line-height: 1.2;
    text-align: center;
    overflow-wrap: anywhere;
}

/* The front side shows the country name. */
.master-flashcard-front {
  color: #0f766e;
  background-color: white;
}

/* The back side shows the capital saved with that country. */
.master-flashcard-back {
  color: #be123c;
  background-color: #fff1f2;
  border-color: #fecdd3;
  transform: rotateY(180deg);
}

/* This styles the latest correct/incorrect status icon. */
.country-status {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 3;
  min-width: 26px;
  min-height: 26px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 0.95rem;
  background-color: white;
  border: 2px solid #bbf7d0;
  border-radius: 50%;
  box-shadow: 0 4px 10px rgba(22, 163, 74, 0.16);
  pointer-events: none;
}

.country-status:empty {
  display: none;
}

.master-flashcard:focus-visible {
  outline: 3px solid #2563eb;
  outline-offset: 4px;
}

/* This styles the button that returns to the flashcards. */
#back-to-learning-button {
  margin-top: 16px;
  padding: 10px 18px;
  font-size: 1rem;
  font-weight: bold;
  color: white;
  background-color: #0f766e;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

/* This changes the Back to Learning button color when the mouse is over it. */
#back-to-learning-button:hover {
  background-color: #0f5f59;
}

/* This styles the Practice Mode box. */
.practice-section {
  margin-top: 24px;
  padding: 16px;
  background-color: #fff7ed;
  border: 2px solid #fed7aa;
  border-radius: 8px;
}

/* This styles the practice question. */
#practice-question {
  color: #1d4ed8;
  font-weight: bold;
}

/* This holds the multiple-choice answer buttons. */
#answer-choices {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

/* This styles each multiple-choice answer. */
.choice-button {
  padding: 12px;
  font-size: 1rem;
  font-weight: bold;
  color: #1f2937;
  background-color: white;
  border: 2px solid #bfdbfe;
  border-radius: 8px;
  cursor: pointer;
}

/* This changes an answer button when the mouse is over it. */
.choice-button:hover {
  background-color: #eff6ff;
}

/* This styles Practice Mode feedback. */
#practice-feedback {
  min-height: 28px;
  color: #0f766e;
  font-weight: bold;
}

/* This styles the Next Question button. */
#next-question-button {
  margin-top: 8px;
  padding: 10px 18px;
  font-size: 1rem;
  font-weight: bold;
  color: white;
  background-color: #0f766e;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

/* This changes the Next Question button color when the mouse is over it. */
#next-question-button:hover {
  background-color: #0f5f59;
}

/* This small burst appears after a normal correct quiz answer. */
.answer-confetti {
  position: fixed;
  inset: 0;
  z-index: 18;
  pointer-events: none;
  overflow: hidden;
}

.answer-confetti.hidden {
  display: none;
}

.answer-confetti-piece {
  position: absolute;
  left: 50%;
  top: 38%;
  width: 10px;
  height: 14px;
  border-radius: 4px;
  opacity: 0;
  will-change: transform, opacity;
  animation: answer-confetti-burst 1.08s ease-out forwards;
}

@keyframes answer-confetti-burst {
  0% {
    opacity: 1;
    transform: translate(0, 0) rotate(0deg) scale(1.15);
  }

  72% {
    opacity: 1;
  }

  100% {
    opacity: 0;
    transform: translate(var(--answer-confetti-x), var(--answer-confetti-y)) rotate(var(--answer-confetti-rotation)) scale(0.92);
  }
}

/* This overlay appears briefly when a country becomes mastered. */
.mastery-celebration {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  padding: 18px;
  background-color: rgba(15, 23, 42, 0.3);
  pointer-events: none;
  animation: celebration-fade 1.8s ease forwards;
}

.mastery-celebration.hidden {
  display: none;
}

/* This makes the passport feel like a small travel book. */
.passport-book {
  display: flex;
  width: min(280px, 76vw);
  min-height: 170px;
  background-color: #fef3c7;
  border: 4px solid #1d4ed8;
  border-radius: 8px;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.28);
  overflow: hidden;
  transform: rotate(-2deg);
}

.passport-cover {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34%;
  color: #fef3c7;
  background-color: #1d4ed8;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  writing-mode: vertical-rl;
}

.passport-page {
  position: relative;
  flex: 1;
  background:
    linear-gradient(90deg, rgba(37, 99, 235, 0.08) 1px, transparent 1px),
    linear-gradient(#fff7ed 0%, #fffbeb 100%);
  background-size: 18px 18px, auto;
}

/* The new stamp drops down and lands on the passport page. */
.earned-passport-stamp {
  position: absolute;
  left: 50%;
  top: 44%;
  display: grid;
  place-items: center;
  width: 118px;
  height: 76px;
  padding: 8px;
  color: #be123c;
  background-color: rgba(255, 241, 242, 0.74);
  border: 4px double #be123c;
  border-radius: 50%;
  font-size: 0.76rem;
  font-weight: 700;
  line-height: 1.1;
  text-align: center;
  text-transform: uppercase;
  transform: translate(-50%, -190%) rotate(-12deg) scale(1.2);
  animation: stamp-drop 1.05s cubic-bezier(0.2, 0.9, 0.25, 1.18) forwards;
}

#earned-stamp-country {
  max-width: 92px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* THUMP appears right when the stamp lands. */
.stamp-thump {
  position: absolute;
  left: 50%;
  top: 70%;
  color: #b45309;
  font-size: 1.1rem;
  font-weight: 700;
  transform: translateX(-50%) scale(0.5);
  opacity: 0;
  animation: thump-pop 0.46s ease 0.72s forwards;
}

/* Confetti pieces are created by JavaScript and burst out quickly. */
.celebration-confetti {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.confetti-piece {
  position: absolute;
  left: 50%;
  top: 46%;
  width: 8px;
  height: 12px;
  border-radius: 3px;
  animation: confetti-burst 0.78s ease-out 0.82s forwards;
}

.celebration-text {
  max-width: 180px;
  padding: 14px;
  color: #0f766e;
  background-color: white;
  border: 2px solid #99f6e4;
  border-radius: 8px;
  box-shadow: 0 14px 32px rgba(15, 23, 42, 0.22);
  animation: celebration-text-pop 0.44s ease 0.82s both;
}

.celebration-text h2 {
  margin: 0 0 6px;
  color: #2563eb;
  font-size: 1.18rem;
}

.celebration-text p {
  margin: 4px 0;
  color: #0f766e;
  font-size: 1rem;
  font-weight: 700;
}

@keyframes stamp-drop {
  0% {
    opacity: 0;
    transform: translate(-50%, -190%) rotate(-12deg) scale(1.2);
  }

  68% {
    opacity: 1;
    transform: translate(-50%, -50%) rotate(-8deg) scale(1);
  }

  82% {
    transform: translate(-50%, -50%) rotate(-8deg) scale(1.08);
  }

  100% {
    opacity: 1;
    transform: translate(-50%, -50%) rotate(-8deg) scale(1);
  }
}

@keyframes thump-pop {
  0% {
    opacity: 0;
    transform: translateX(-50%) scale(0.5);
  }

  45% {
    opacity: 1;
    transform: translateX(-50%) scale(1.1);
  }

  100% {
    opacity: 0;
    transform: translateX(-50%) scale(1);
  }
}

@keyframes confetti-burst {
  0% {
    opacity: 1;
    transform: translate(0, 0) rotate(0deg);
  }

  100% {
    opacity: 0;
    transform: translate(var(--confetti-x), var(--confetti-y)) rotate(220deg);
  }
}

@keyframes celebration-text-pop {
  0% {
    opacity: 0;
    transform: scale(0.85);
  }

  100% {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes celebration-fade {
  0%,
  82% {
    opacity: 1;
  }

  100% {
    opacity: 0;
  }
}

/* This makes the coin badge fit smaller mobile screens. */
@media (max-width: 480px) {
  /* On small screens, the top game bar tightens its spacing so both pills fit. */
  .top-game-bar {
    top: calc(58px + env(safe-area-inset-top));
    right: max(10px, env(safe-area-inset-right));
    left: max(10px, env(safe-area-inset-left));
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px;
  }

  #coin-count {
    min-width: 66px;
    padding: 7px 10px;
    font-size: 0.96rem;
  }

  #store-button {
    min-height: 40px;
    padding: 7px 11px;
    font-size: 0.94rem;
  }

  /* The World Map pill also shrinks a little so it fits opposite the coin and Store row. */
  #world-map-button {
    top: max(10px, env(safe-area-inset-top));
    left: max(10px, env(safe-area-inset-left));
    min-height: 40px;
    padding: 7px 10px;
    font-size: 0.94rem;
  }

  .world-map-section {
    padding: 14px;
  }

  .world-map-illustration {
    min-height: 130px;
  }

  .new-countries-mode-buttons {
    grid-template-columns: 1fr;
  }

  .world-globe {
    font-size: 3.4rem;
  }

  .map-label {
    padding: 3px 6px;
    font-size: 0.66rem;
  }

  .welcome-option {
    min-height: 64px;
    padding: 12px;
    font-size: 1rem;
  }

  .profile-choice-panel {
    padding: 14px;
  }

  .profile-card {
    align-items: stretch;
    flex-direction: column;
  }

  .profile-select-button {
    justify-content: center;
  }

  .profile-delete-button {
    width: 100%;
  }

  .avatar-grid {
    grid-template-columns: 1fr;
  }

  .avatar-card {
    min-height: 146px;
  }

  .avatar-image {
    aspect-ratio: 16 / 9;
  }

  .mastery-celebration {
    flex-direction: column;
    gap: 12px;
  }

  .celebration-text {
    max-width: 260px;
  }

  .store-heading-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .store-item-grid {
    grid-template-columns: 1fr;
  }

  /* On small screens, fewer decorations keeps the game card clean. */
  .travel-decor {
    opacity: 0.16;
  }

  .route {
    width: 220px;
    opacity: 0.1;
  }

  .route-top {
    top: 4%;
    left: 4%;
  }

  .route-bottom {
    display: none;
  }

  .stamp {
    font-size: 0.7rem;
    padding: 5px 8px;
  }

  .stamp-two,
  .flag-japan,
  .flag-india,
  .landmark-taj,
  .landmark-colosseum {
    display: none;
  }

  .sticker {
    width: 42px;
    height: 42px;
  }

  .flag-image {
    width: 38px;
  }

  .sticker-plane {
    top: 13%;
    right: 4%;
  }

  .sticker-bag {
    bottom: 8%;
    left: 4%;
  }

  .globe-icon {
    bottom: 3%;
    left: 22%;
  }

  .compass-icon {
    right: 6%;
    bottom: 16%;
  }

  .landmark {
    width: 62px;
    opacity: 0.12;
  }

  .landmark-eiffel {
    right: 9%;
    bottom: 2%;
  }

  .landmark-liberty {
    top: 6%;
    left: 20%;
  }

  .landmark-opera {
    top: 74%;
    right: 3%;
    width: 66px;
  }
}

/* ===== Startup Screen ===== */

#startup-screen {
  position: fixed;
  inset: 0;
  background: linear-gradient(180deg,#0B3D91,#1A73E8);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  color: white;
  text-align: center;
}

.startup-content {
  animation: startupFade 1s ease;
}

.startup-globe {
  font-size: 90px;
  margin-bottom: 20px;
}

.startup-author {
  font-size: 20px;
  opacity: .9;
}

.startup-tagline {
  margin-top: 25px;
  color: #FFD54F;
  font-size: 24px;
  font-weight: bold;
}

@keyframes startupFade {
  from {
    opacity: 0;
    transform: scale(.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}