/* Shared dashboard shell, tokens and UI primitives. */
:root {
  --color-primary: #2447c6;
  --color-primary-hover: #1b3cae;
  --color-primary-soft: #eaf0ff;
  --color-navy: #1f3a70;
  --color-sky: #1e63c6;
  --color-canvas: #fffbed;
  --color-surface: #ffffff;
  --color-surface-soft: #f4f7fc;
  --color-green: #2c7a58;
  --color-yellow: #f4b000;
  --color-text: #203052;
  --color-muted: #61708f;
  --color-border: #dce4f1;
  --color-focus: #155eef;
  --font-heading: "Quicksand", sans-serif;
  --font-body: "Roboto", sans-serif;
  --header-height: 74px;
  --sidebar-width: 248px;
  --sidebar-collapsed-width: 84px;
  --content-max: 1360px;
  --shadow-1: 0 2px 8px rgb(31 58 112 / 8%);
  --shadow-2: 0 14px 36px rgb(31 58 112 / 12%);
  --color-track: #eaf0f7;
  --color-success-soft: #e7f6ed;
  --color-warning-text: #8a5a00;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  color-scheme: light;
  background: var(--color-canvas);
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--color-text);
  background: var(--color-canvas);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

button,
a {
  font: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  color: inherit;
}

svg,
img {
  display: block;
}

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.7rem 1rem;
  border-radius: 0.75rem;
  color: white;
  background: var(--color-primary);
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: translateY(0);
}

.app-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 30;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  min-height: var(--header-height);
  padding: 0 1.5rem;
  border-bottom: 1px solid rgb(220 228 241 / 80%);
  background: rgb(255 255 255 / 94%);
  box-shadow: 0 1px 12px rgb(31 58 112 / 5%);
  backdrop-filter: blur(16px);
}

.app-header__brand-group,
.app-header__account,
.profile-button,
.reward-chip {
  display: flex;
  align-items: center;
}

.app-header__brand-group {
  min-width: 0;
}

.brand {
  display: inline-flex;
  width: 190px;
  min-width: 0;
  align-items: center;
}

.brand img {
  width: 100%;
  height: auto;
}

.icon-button {
  display: inline-grid;
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  padding: 0;
  border: 0;
  border-radius: 12px;
  color: var(--color-navy);
  background: transparent;
  cursor: pointer;
  place-items: center;
}

.icon-button:hover {
  background: var(--color-primary-soft);
}

.icon-button svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.app-header__menu-button {
  display: none;
  margin-right: 0.35rem;
}

[aria-disabled="true"] {
  cursor: default;
}

.app-header__account {
  justify-content: flex-end;
  gap: 0.75rem;
}

.reward-chip {
  min-height: 44px;
  gap: 0.45rem;
  padding: 0.45rem 0.8rem;
  border: 1px solid #f1e3b4;
  border-radius: 999px;
  color: #8a5a00;
  background: #fff8dd;
  font-family: var(--font-heading);
  font-weight: 700;
}

.reward-chip svg {
  width: 24px;
  height: 24px;
  fill: var(--color-yellow);
  stroke: #a86c00;
  stroke-linejoin: round;
  stroke-width: 1.2;
}

.profile-button {
  min-height: 48px;
  gap: 0.35rem;
  padding: 0.2rem;
  border: 0;
  border-radius: 999px;
  background: transparent;
  cursor: pointer;
}

.profile-button:hover {
  background: var(--color-surface-soft);
}

.profile-button__avatar {
  display: grid;
  width: 44px;
  height: 44px;
  border: 3px solid #cae9f7;
  border-radius: 50%;
  color: var(--color-navy);
  background: #dff4ed;
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 700;
  place-items: center;
}

.profile-button__chevron {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: var(--color-navy);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.sidebar {
  position: fixed;
  top: var(--header-height);
  bottom: 0;
  left: 0;
  z-index: 20;
  display: flex;
  width: var(--sidebar-width);
  flex-direction: column;
  gap: 0.8rem;
  padding: 1.25rem 0.85rem 1rem;
  border-right: 1px solid rgb(220 228 241 / 78%);
  background: var(--color-surface);
  backdrop-filter: blur(16px);
  transition: width 220ms ease, padding 220ms ease;
}

.sidebar__toggle {
  --leaf-turn: -12deg;
  --leaf-tilt: 0deg;
  --leaf-scale: 1;
  position: absolute;
  top: 0.75rem;
  right: -24px;
  z-index: 2;
  display: grid;
  width: 48px;
  height: 48px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  place-items: center;
}

.sidebar__toggle:hover,
.sidebar__toggle:focus-visible {
  --leaf-tilt: -6deg;
  --leaf-scale: 1.08;
}

.sidebar__toggle:focus-visible {
  outline-color: var(--color-green);
}

.sidebar__toggle:active {
  --leaf-scale: 0.94;
}

.sidebar__leaf {
  width: 42px;
  height: 42px;
  overflow: visible;
  filter: drop-shadow(0 3px 3px rgb(44 122 88 / 18%));
  transform: rotate(calc(var(--leaf-turn) + var(--leaf-tilt))) scale(var(--leaf-scale));
  transition: transform 280ms ease, filter 180ms ease;
}

.sidebar__leaf-body {
  fill: #4f9637;
}

.sidebar__leaf-fold {
  fill: #83bd51;
}

.sidebar__leaf-veins {
  fill: none;
  stroke: #e4f2bf;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.35;
}

.sidebar__toggle::after {
  content: attr(aria-label);
  position: absolute;
  top: 50%;
  left: calc(100% + 4px);
  width: max-content;
  padding: 6px 10px;
  border-radius: 10px;
  color: var(--color-green);
  background: var(--color-surface);
  box-shadow: 0 3px 12px rgb(44 122 88 / 12%);
  font-size: 13px;
  font-weight: 500;
  opacity: 0;
  pointer-events: none;
  transform: translate(4px, -50%);
  transition: opacity 160ms ease, transform 160ms ease;
}

.sidebar__toggle:hover::after,
.sidebar__toggle:focus-visible::after {
  opacity: 1;
  transform: translate(0, -50%);
}

.subject-nav {
  display: grid;
  gap: 0.45rem;
}

.subject-nav__item {
  display: flex;
  min-height: 58px;
  align-items: center;
  gap: 0.85rem;
  padding: 0.6rem 0.8rem;
  border-radius: 16px;
  color: var(--color-text);
  font-family: var(--font-heading);
  font-weight: 700;
  white-space: nowrap;
}

a.subject-nav__item:hover {
  color: var(--color-primary);
  background: var(--color-surface-soft);
}

.subject-nav__item.is-current {
  color: var(--color-primary);
  background: var(--color-primary-soft);
  box-shadow: inset 3px 0 0 var(--color-primary);
}

.subject-nav__icon {
  display: grid;
  width: 36px;
  height: 36px;
  flex: 0 0 36px;
  color: currentColor;
  place-items: center;
}

.subject-nav__icon svg {
  width: 27px;
  height: 27px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.9;
}

.subject-nav__icon--green {
  color: var(--color-green);
}

.subject-nav__icon--planet {
  color: #354365;
}

.subject-nav__icon--planet img {
  width: 32px;
  height: 32px;
}

.subject-nav__icon--island {
  color: var(--color-primary);
}

.sidebar__footer {
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

.sidebar-journey {
  position: relative;
  display: block;
  min-height: 210px;
  flex: 1;
  margin-inline: -0.85rem;
  overflow: hidden;
  /* Let the transparent canopy meet the white sidebar without a card edge. */
  mask-image: linear-gradient(to bottom, #000 calc(100% - 36px), transparent);
}

.sidebar-journey img {
  width: 100%;
  /* Crop empty sky space while keeping the canopy visible on short screens. */
  height: calc(100% + var(--sidebar-width) * 0.8);
  margin-top: calc(var(--sidebar-width) * -0.8);
  object-fit: cover;
  object-position: center top;
  transition: transform 260ms ease;
}

.sidebar-journey:hover img {
  transform: scale(1.025);
}

.sidebar-journey--learning {
  min-height: 0;
  mask-image: none;
}

.sidebar-journey__learning-art {
  display: block;
  width: 100%;
  height: 100%;
  overflow: hidden;
  transition: transform 260ms ease;
}

.sidebar-journey--learning:hover .sidebar-journey__learning-art {
  transform: scale(1.025);
}

html.sidebar-is-collapsed {
  --sidebar-width: var(--sidebar-collapsed-width);
}

html.sidebar-is-collapsed .sidebar {
  padding-inline: 0.65rem;
}

html.sidebar-is-collapsed .sidebar__toggle {
  --leaf-turn: 168deg;
}

html.sidebar-is-collapsed .sidebar .subject-nav__item {
  justify-content: center;
  padding-inline: 0.5rem;
}

html.sidebar-is-collapsed .sidebar .subject-nav__label {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

html.sidebar-is-collapsed .sidebar-journey {
  display: none;
}

html.sidebar-is-collapsed .subject-nav__item.is-current {
  box-shadow: inset 0 -3px 0 var(--color-primary);
}

.dashboard-main {
  min-height: 100vh;
  padding: calc(var(--header-height) + 2rem) 2rem 3rem calc(var(--sidebar-width) + 2rem);
  transition: padding-left 220ms ease;
}

.dashboard-main__inner {
  width: min(100%, var(--content-max));
  margin-inline: auto;
}

.page-heading {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.page-heading h1,
.page-heading p {
  margin: 0;
}

.page-heading h1 {
  color: var(--color-navy);
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.035em;
}

.page-heading p {
  margin-top: 0.25rem;
  color: var(--color-muted);
  font-size: clamp(1rem, 2vw, 1.2rem);
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: 14px;
  font-family: var(--font-heading);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.35;
  cursor: pointer;
  transition: background-color 160ms ease;
}

.button--primary {
  color: var(--color-surface);
  background: var(--color-primary);
}

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

.button svg {
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.preview-note {
  margin: 20px 0 0;
  color: var(--color-muted);
  font-size: 14px;
}

.topic-dialog {
  width: min(calc(100% - 32px), 560px);
  max-height: calc(100dvh - 48px);
  padding: 24px;
  overflow-y: auto;
  border: 1px solid var(--color-border);
  border-radius: 24px;
  color: var(--color-text);
  background: var(--color-surface);
  box-shadow: var(--shadow-2);
}

.topic-dialog::backdrop {
  background: rgb(31 58 112 / 40%);
}

.topic-dialog__heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
}

.topic-dialog h2 {
  margin: 0;
  color: var(--color-navy);
  font-family: var(--font-heading);
  font-size: 26px;
  line-height: 1.25;
}

.drawer-backdrop,
.mobile-drawer,
.bottom-nav {
  display: none;
}

@media (max-width: 1023.98px) {
  .app-header {
    padding-inline: 1rem;
  }

  .brand {
    width: 48px;
    height: 48px;
    overflow: hidden;
  }

  .brand img {
    width: 219px;
    max-width: none;
    height: 48px;
    object-fit: cover;
    object-position: left center;
  }
}

@media (max-width: 1023.98px) {
  .sidebar-journey {
    min-height: 180px;
  }

  .sidebar-journey--learning {
    min-height: 0;
  }
}

@media (max-width: 767.98px) {
  :root {
    --header-height: 64px;
  }

  body {
    padding-bottom: 76px;
  }

  .app-header {
    grid-template-columns: 1fr auto;
    padding-inline: 0.75rem;
  }

  .app-header__menu-button {
    display: inline-grid;
  }

  .brand {
    width: 145px;
    height: auto;
    overflow: visible;
  }

  .brand img {
    width: 100%;
    max-width: 100%;
    height: auto;
    object-fit: contain;
  }

  .sidebar,
  .reward-chip {
    display: none;
  }

  .profile-button__chevron {
    display: none;
  }

  .profile-button__avatar {
    width: 40px;
    height: 40px;
  }

  .dashboard-main {
    padding: calc(var(--header-height) + 1.25rem) 1rem 1.5rem;
  }

  .page-heading {
    gap: 0.75rem;
    margin-bottom: 1rem;
  }

  .topic-dialog {
    padding: 18px;
  }

  .drawer-backdrop {
    position: fixed;
    inset: 0;
    z-index: 39;
    display: block;
    background: rgb(31 58 112 / 36%);
    backdrop-filter: blur(2px);
  }

  .drawer-backdrop[hidden],
  .mobile-drawer[hidden] {
    display: none;
  }

  .mobile-drawer {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 40;
    display: block;
    width: min(86vw, 320px);
    padding: 1rem;
    background: var(--color-surface);
    box-shadow: var(--shadow-2);
  }

  .mobile-drawer__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    padding-bottom: 0.8rem;
    border-bottom: 1px solid var(--color-border);
  }

  .mobile-drawer__header p {
    margin: 0;
    color: var(--color-navy);
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
  }

  .mobile-drawer .subject-nav__item {
    justify-content: flex-start;
  }

  .bottom-nav {
    position: fixed;
    inset: auto 0 0;
    z-index: 35;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    min-height: 70px;
    padding: 0.4rem 0.5rem max(0.4rem, env(safe-area-inset-bottom));
    border-top: 1px solid var(--color-border);
    background: rgb(255 255 255 / 96%);
    box-shadow: 0 -8px 22px rgb(31 58 112 / 8%);
    backdrop-filter: blur(16px);
  }

  .bottom-nav__item {
    display: flex;
    min-width: 0;
    min-height: 56px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.18rem;
    padding: 0.3rem;
    border: 0;
    border-radius: 12px;
    color: var(--color-muted);
    background: transparent;
    font-size: 0.72rem;
    font-weight: 600;
  }

  .bottom-nav__item svg {
    width: 23px;
    height: 23px;
    fill: none;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 1.9;
  }

  .bottom-nav__item.is-current {
    color: var(--color-primary);
    background: var(--color-primary-soft);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }
}