/* =========================================================
   BioQuest — Nature Theme
   ========================================================= */

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, Helvetica, sans-serif;

  /* Light mint background like the reference */
  background: #d5f0e0;
  color: #123524;
}

/* =========================================================
   SCREEN LAYOUT
   ========================================================= */

.screen {
  width: min(1000px, 92%);
  margin: 0 auto;
  padding: 32px 0 60px;
}

[hidden] {
  display: none !important;
}

/* =========================================================
   HEADINGS
   ========================================================= */

h1 {
  margin: 0 0 6px;
  font-size: 34px;
  color: #123524;
}

h2 {
  margin: 0 0 8px;
  font-size: 25px;
  color: #123524;
}

h3 {
  color: #123524;
}

/* =========================================================
   LOGIN
   ========================================================= */

#screen-login {
  max-width: 560px;
}

#screen-login h1 {
  text-align: center;
  margin-bottom: 25px;
}

#form-login {
  background: #e4f5ea;
  border: 1px solid #b9dfc8;
  border-radius: 20px;
  padding: 30px;
  box-shadow: 0 4px 15px rgba(18, 53, 36, 0.08);
}

#input-email,
#input-username,
#input-password,
#input-password-confirm {
  width: 100%;
  padding: 13px 15px;
  border: 1px solid #a9d5b9;
  border-radius: 10px;
  background: white;
  color: #123524;
  font-size: 16px;
}

#input-email:focus,
#input-username:focus,
#input-password:focus,
#input-password-confirm:focus {
  outline: 2px solid #55c878;
  border-color: #55c878;
}

#btn-login {
  width: 100%;
  margin-top: 12px;
}

#form-login label {
  display: block;
  margin-top: 14px;
  margin-bottom: 6px;
  font-weight: bold;
}

#form-login label:first-of-type {
  margin-top: 0;
}

.auth-heading {
  margin-top: 0;
  color: #456454;
  text-align: center;
}

/* =========================================================
   BUTTONS
   ========================================================= */

button {
  border: none;
  border-radius: 10px;
  padding: 11px 18px;

  background: #55c878;
  color: #123524;

  font-size: 15px;
  font-weight: bold;
  cursor: pointer;

  transition:
    transform 0.15s ease,
    background 0.15s ease,
    box-shadow 0.15s ease;
}

button:hover {
  background: #45b96a;
  transform: translateY(-1px);
  box-shadow: 0 3px 8px rgba(18, 53, 36, 0.15);
}

button:active {
  transform: translateY(0);
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* Keep primary quest actions separate from account and appearance controls. */
.dashboard-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 18px;
}

.dashboard-actions,
.quest-actions,
.account-actions,
.result-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.dashboard-actions {
  justify-content: flex-end;
}

.account-actions {
  padding-left: 14px;
  border-left: 1px solid #b5dcc4;
}

.quest-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.page-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 28px;
}

.eyebrow {
  margin: 0 0 7px;
  color: #2d9b55;
  font-size: 12px;
  font-weight: bold;
  letter-spacing: 0.12em;
}

.page-header > div > p:last-child,
.dashboard-card > p:last-of-type {
  max-width: 650px;
  margin-bottom: 0;
  color: #456454;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 9px;
  flex-wrap: wrap;
}

.page-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 9px;
  flex-wrap: wrap;
}

.result-nav {
  width: min(1000px, 92%);
  margin: 0 auto;
  padding-top: 25px;
}

.nav-button,
.small-button {
  padding: 9px 13px;
  background: #ffffff;
  color: #123524;
  border: 1px solid #b5dcc4;
  font-size: 13px;
}

.nav-button:hover,
.small-button:hover {
  background: #edf8f1;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-bottom: 24px;
}

.stat-card,
.dashboard-card,
.settings-card {
  background: #e4f5ea;
  border: 1px solid #b9dfc8;
  border-radius: 20px;
  padding: 24px;
  box-shadow: 0 5px 18px rgba(18, 53, 36, 0.08);
}

.settings-details {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 10px 18px;
  margin-top: 18px;
}

.settings-details span {
  color: #456454;
}

.setting-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 15px;
  cursor: pointer;
}

.setting-toggle input {
  width: 18px;
  height: 18px;
  accent-color: #55c878;
}

.settings-danger {
  border-color: #e2b1a9;
}

.stat-card {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 12px;
  align-items: center;
}

.stat-icon {
  grid-row: span 2;
  font-size: 30px;
}

.stat-label {
  color: #456454;
  font-size: 14px;
}

.stat-card strong {
  font-size: 30px;
}

.dashboard-card {
  margin-top: 18px;
}

.dashboard-card h2 {
  margin-bottom: 6px;
}

.primary-button {
  margin-top: 20px;
  background: #55c878;
  border-color: #55c878;
}

.quests-overview {
  margin-bottom: 28px;
}

.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 14px;
}

.section-heading h2 {
  margin-bottom: 0;
}

.section-heading > span:last-child {
  color: #456454;
  font-size: 14px;
}

.capacity-badge,
.difficulty {
  display: inline-block;
  border-radius: 999px;
  padding: 5px 10px;
  font-size: 12px;
  font-weight: bold;
  text-transform: capitalize;
}

.capacity-badge {
  background: #c6ead4;
  color: #123524;
}

.quest-list {
  display: grid;
  gap: 11px;
  margin-bottom: 30px;
}

.quest-list-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 17px 19px;
  background: #e4f5ea;
  border: 1px solid #b9dfc8;
  border-radius: 14px;
}

.quest-list-card h3 {
  margin: 7px 0 4px;
  color: #123524;
  font-size: 17px;
}

.quest-list-card p {
  margin: 0;
  color: #456454;
  font-size: 13px;
  text-transform: capitalize;
}

.difficulty-easy { background: #c6ead4; color: #14542d; }
.difficulty-medium { background: #f6e4a8; color: #674e00; }
.difficulty-hard { background: #f3c0b9; color: #70261f; }

.empty-board {
  margin: 0 0 30px;
  padding: 18px;
  border: 1px dashed #9bc9aa;
  border-radius: 14px;
  color: #456454;
}

.new-quests-heading {
  margin-top: 28px;
}

.settings-card {
  max-width: 680px;
  margin-bottom: 20px;
}

/* Secondary buttons */

#btn-leaderboard,
#btn-back-from-leaderboard,
#btn-back-quest {
  background: #ffffff;
  color: #123524;
  border: 1px solid #b5dcc4;
}

#btn-leaderboard:hover,
#btn-back-from-leaderboard:hover,
#btn-back-quest:hover {
  background: #edf8f1;
}

/* =========================================================
   QUEST SCREEN HEADER
   ========================================================= */

#screen-quest > #txt-username {
  display: block;
  font-size: 18px;
  margin-bottom: 8px;
}

#screen-quest > #txt-username::before {
  content: "Welcome, ";
}

#btn-leaderboard,
#btn-logout {
  margin: 0;
}

/* =========================================================
   QUEST CARD
   ========================================================= */

#quest-card {
  background: #e4f5ea;
  border: 1px solid #b9dfc8;
  border-radius: 20px;

  padding: 30px;

  box-shadow: 0 5px 18px rgba(18, 53, 36, 0.08);
}

#quest-card p {
  margin: 8px 0;
}

#txt-target {
  font-size: 27px;
  font-weight: bold;
  color: #123524;
  margin-top: 0 !important;
  margin-bottom: 18px !important;
}

#txt-category,
#txt-difficulty,
#txt-progress,
#txt-points-reward {
  font-weight: 500;
}

/* =========================================================
   PROGRESS BAR
   ========================================================= */

#progress-bar {
  width: 0%;
  height: 12px;

  margin-top: 20px;

  background: #55c878;
  border-radius: 999px;

  transition: width 0.4s ease;
}

#progress-bar[aria-valuenow="0"] {
  background: #b9dfc8;
}

/* =========================================================
   EMPTY QUEST
   ========================================================= */

#quest-empty {
  background: #e4f5ea;
  border: 1px solid #b9dfc8;
  border-radius: 20px;

  padding: 25px;
  margin-bottom: 25px;

  color: #123524;
}

/* =========================================================
   SUBMISSION AREA
   ========================================================= */

#form-submit {
  margin-top: 28px;

  background: #e4f5ea;
  border: 1px solid #b9dfc8;
  border-radius: 20px;

  padding: 25px;
}

.file-picker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 12px 17px;
  border: 1px solid #55c878;
  border-radius: 10px;
  background: #55c878;
  color: #123524;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.15s ease;
}

.file-picker:hover {
  background: #45b96a;
  transform: translateY(-1px);
}

.file-picker input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.file-picker-icon {
  font-size: 18px;
}

.file-name {
  display: inline-block;
  max-width: 42%;
  margin-left: 12px;
  overflow: hidden;
  color: #456454;
  font-size: 14px;
  text-overflow: ellipsis;
  vertical-align: middle;
  white-space: nowrap;
}

/* =========================================================
   ERROR MESSAGES
   ========================================================= */

#error-login,
#error-quest,
#error-submit,
#error-leaderboard,
#error-options {
  display: block;

  margin-top: 10px;

  color: #a33a32;
  font-weight: bold;
}

/* =========================================================
   RESULT SCREEN
   ========================================================= */

#screen-result {
  text-align: center;
}

#result-icon {
  font-size: 60px;
  margin-bottom: 10px;
}

#result-heading {
  font-size: 32px;
  color: #123524;
}

#result-facts {
  background: #e4f5ea;
  border: 1px solid #b9dfc8;
  border-radius: 20px;

  padding: 25px;
  margin: 20px 0;

  text-align: left;
}

#result-points {
  font-size: 22px;
  font-weight: bold;
  color: #2d9b55;
}

#result-completed {
  background: #c6ead4;
  border: 1px solid #91cba7;

  border-radius: 15px;
  padding: 18px;

  margin: 20px 0;

  font-weight: bold;
}

/* =========================================================
   LEADERBOARD
   ========================================================= */

#screen-leaderboard {
  max-width: 800px;
}

#screen-leaderboard table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;

  overflow: hidden;

  background: #e4f5ea;
  border: 1px solid #b9dfc8;
  border-radius: 20px;

  box-shadow: 0 5px 18px rgba(18, 53, 36, 0.08);
}

#screen-leaderboard th,
#screen-leaderboard td {
  padding: 14px 18px;
  text-align: left;
}

#screen-leaderboard th {
  background: #c6ead4;
  color: #123524;
  font-weight: bold;
}

#screen-leaderboard tr:not(:last-child) td {
  border-bottom: 1px solid #c8e6d3;
}

#screen-leaderboard .current-user {
  background: #bce6ca;
  font-weight: bold;
}

/* =========================================================
   MOBILE
   ========================================================= */

@media (max-width: 600px) {
  .screen {
    width: 92%;
    padding-top: 20px;
  }

  h1 {
    font-size: 28px;
  }

  #quest-card {
    padding: 22px;
  }

  .dashboard-header {
    display: block;
  }

  .page-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .page-nav {
    justify-content: flex-start;
  }

  .result-nav {
    padding-top: 20px;
  }

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

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

  .quest-list-card {
    align-items: flex-start;
    flex-direction: column;
  }

  .dashboard-actions {
    justify-content: flex-start;
    margin-top: 18px;
  }

  .account-actions {
    padding-left: 0;
    border-left: 0;
  }

  .quest-header {
    align-items: flex-start;
    flex-direction: column;
  }

  #txt-target {
    font-size: 23px;
  }

  #btn-leaderboard,
  #btn-logout {
    margin-bottom: 0;
  }

  #form-submit {
    padding: 20px;
  }

  #input-photo {
    width: 100%;
    margin-bottom: 15px;
  }

  .file-picker {
    width: 100%;
    justify-content: center;
  }

  .file-name {
    display: block;
    max-width: 100%;
    margin: 0 0 15px;
    text-align: center;
  }

  #btn-submit {
    width: 100%;
  }
}

/* =========================================================
   LIGHT / DARK THEME
   ========================================================= */

/* Default = Light Theme */

body {
  background: #d5f0e0;
  color: #123524;

  transition:
    background-color 0.25s ease,
    color 0.25s ease;
}

#quest-card,
#quest-empty,
#form-submit,
#result-facts,
#screen-leaderboard table,
#form-login {
  transition:
    background-color 0.25s ease,
    border-color 0.25s ease,
    color 0.25s ease;
}

/* =========================================================
   DARK THEME
   ========================================================= */

body.dark-theme {
  background: #081c14;
  color: #f2fff6;
}

body.dark-theme h1,
body.dark-theme h2,
body.dark-theme h3,
body.dark-theme #txt-target,
body.dark-theme #result-heading,
body.dark-theme #screen-quest > #txt-username {
  color: #f2fff6;
}

body.dark-theme #quest-card,
body.dark-theme #quest-empty,
body.dark-theme #form-submit,
body.dark-theme #result-facts,
body.dark-theme #screen-leaderboard table,
body.dark-theme #form-login {
  background: #123d2b;
  border-color: #245c40;
  color: #f2fff6;
}

body.dark-theme .stat-card,
body.dark-theme .dashboard-card,
body.dark-theme .settings-card,
body.dark-theme .quest-list-card {
  background: #123d2b;
  border-color: #245c40;
  color: #f2fff6;
}

body.dark-theme .stat-label,
body.dark-theme .page-header > div > p:last-child,
body.dark-theme .dashboard-card > p:last-of-type,
body.dark-theme .section-heading > span:last-child,
body.dark-theme .quest-list-card p,
body.dark-theme .empty-board,
body.dark-theme .auth-heading {
  color: #c9ebd7;
}

body.dark-theme .quest-list-card h3,
body.dark-theme .settings-card h2,
body.dark-theme .settings-details strong {
  color: #f2fff6;
}

body.dark-theme .settings-details span {
  color: #c9ebd7;
}

body.dark-theme .settings-danger {
  border-color: #a85e55;
}

body.reduced-motion *,
body.reduced-motion *::before,
body.reduced-motion *::after {
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
  scroll-behavior: auto !important;
  transition-duration: 0.01ms !important;
}

body.dark-theme .nav-button,
body.dark-theme .small-button {
  background: #1c4d37;
  color: #f2fff6;
  border-color: #397354;
}

body.dark-theme .nav-button:hover,
body.dark-theme .small-button:hover {
  background: #286448;
}

body.dark-theme .account-actions {
  border-color: #397354;
}

body.dark-theme .capacity-badge {
  background: #286448;
  color: #f2fff6;
}

body.dark-theme .empty-board {
  border-color: #397354;
}

body.dark-theme #quest-empty,
body.dark-theme #form-submit,
body.dark-theme #result-facts,
body.dark-theme #screen-leaderboard td,
body.dark-theme #screen-leaderboard p,
body.dark-theme .quest-info-item,
body.dark-theme .quest-label,
body.dark-theme .file-name {
  color: #e5fff0;
}

body.dark-theme .file-picker {
  background: #62d98a;
  border-color: #83eea5;
  color: #082817;
}

body.dark-theme .file-picker:hover {
  background: #7ae99e;
}

body.dark-theme #input-photo {
  color: #e5fff0;
}

body.dark-theme #error-login,
body.dark-theme #error-quest,
body.dark-theme #error-submit,
body.dark-theme #error-leaderboard {
  color: #ffb4a9;
}

body.dark-theme #input-email,
body.dark-theme #input-username,
body.dark-theme #input-password,
body.dark-theme #input-password-confirm {
  background: #f1fff6;
  color: #123524;
  border-color: #4c8f67;
}

body.dark-theme #btn-leaderboard,
body.dark-theme #btn-back-from-leaderboard,
body.dark-theme #btn-back-quest {
  background: #1c4d37;
  color: #f2fff6;
  border-color: #397354;
}

body.dark-theme #btn-leaderboard:hover,
body.dark-theme #btn-back-from-leaderboard:hover,
body.dark-theme #btn-back-quest:hover {
  background: #286448;
}

body.dark-theme #screen-leaderboard th {
  background: #1c4d37;
  color: #f2fff6;
}

body.dark-theme #screen-leaderboard tr:not(:last-child) td {
  border-color: #286448;
}

body.dark-theme #screen-leaderboard .current-user {
  background: #286448;
}

body.dark-theme #result-completed {
  background: #1b5639;
  border-color: #397354;
}

body.dark-theme #result-points {
  color: #6de493;
}

/* Theme button */

#btn-theme {
  background: #ffffff;
  color: #123524;
  border: 1px solid #b5dcc4;
}

#btn-theme:hover {
  background: #edf8f1;
}

body.dark-theme #btn-theme {
  background: #1c4d37;
  color: #f2fff6;
  border-color: #397354;
}

body.dark-theme #btn-theme:hover {
  background: #286448;
}