/* =============================================
   Material Design 3 — Dark + Purple accent
   ============================================= */

:root {
  /* MD3 colour tokens — dark scheme */
  --md-surface:          #0f0f14;
  --md-surface-1:        #1a1a24;
  --md-surface-2:        #212130;
  --md-surface-3:        #2a2a3d;
  --md-surface-variant:  #2d2b3d;
  --md-outline:          #4a4860;
  --md-outline-variant:  #302e45;

  --md-primary:          #ce93d8;   /* purple-200 */
  --md-primary-container:#6a1b9a;   /* purple-800 */
  --md-on-primary:       #1e0034;
  --md-on-primary-container: #f3e5f5;

  --md-on-surface:       #e6e1ec;
  --md-on-surface-variant: #cac4d0;
  --md-on-surface-dim:   #7f7a8a;

  --md-error:            #f2b8b8;

  /* Elevation tint (MD3 uses colour tint instead of shadow) */
  --el1: rgba(206,147,216,.05);
  --el2: rgba(206,147,216,.08);
  --el3: rgba(206,147,216,.11);
  --el4: rgba(206,147,216,.14);

  /* Radii */
  --r-xs: 4px;
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-xl: 28px;
  --r-full: 9999px;

  /* Motion */
  --motion-standard: cubic-bezier(.2,0,0,1);
  --motion-emphasized: cubic-bezier(.05,.7,.1,1);
}

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Roboto', system-ui, sans-serif;
  background: var(--md-surface);
  color: var(--md-on-surface);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

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

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--md-outline); border-radius: var(--r-full); }

/* ============================================================
   TOP APP BAR
   ============================================================ */
.app-bar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--md-surface-1) 95%, transparent);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--md-outline-variant);
}

.app-bar__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.app-bar__leading {
  display: flex;
  align-items: center;
  gap: 12px;
}

.app-bar__icon {
  font-size: 28px;
  color: var(--md-primary);
}

.app-bar__title {
  color: #4dd0e1;
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -.2px;
  color: #cd92d7;
}


.app-bar__actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: var(--r-full);
  background: #69f0ae;
  box-shadow: 0 0 8px #69f0ae88;
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: .5; }
}

.status-label {
  font-size: 13px;
  color: var(--md-on-surface-variant);
  font-weight: 500;
}

/* ============================================================
   MAIN LAYOUT
   ============================================================ */
.main {
  flex: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 0 24px 120px;
  display: flex;
  flex-direction: column;
  align-items: stretch;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  text-align: center;
  padding: 80px 0 48px;
  max-width: 640px;
  margin: 0 auto;
}

.hero__eyebrow {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--md-primary);
  margin-bottom: 12px;
}

.hero__title {
  font-size: clamp(64px, 5vw, 52px);
  font-weight: 300;
  line-height: 1.15;
  letter-spacing: -.5px;
  color: var(--md-on-surface);
  margin-bottom: 16px;
}

.hero__accent {
  color: #ffffff;
  font-weight: 600;
}

.hero__subtitle {
  font-size: 16px;
  font-weight: 400;
  color: var(--md-on-surface-variant);
  line-height: 1.6;
}

/* ============================================================
   CARDS GRID
   ============================================================ */
.cards-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
}

/* ---- Single card ---- */
.card {
  flex: 0 0 260px;
  position: relative;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 16px 18px 18px;
  background: var(--md-surface-1);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--r-lg);
  cursor: pointer;
  overflow: hidden;
  transition:
    background .2s var(--motion-standard),
    border-color .2s var(--motion-standard),
    transform .2s var(--motion-emphasized),
    box-shadow .2s var(--motion-standard);
}

/* State layer */
.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--md-primary);
  opacity: 0;
  transition: opacity .2s var(--motion-standard);
  pointer-events: none;
}

.card:hover {
  border-color: var(--md-outline);
  transform: translateY(-2px);
  box-shadow:
    0 2px 4px rgba(0,0,0,.3),
    0 4px 16px rgba(0,0,0,.25);
}

.card:hover::before { opacity: .06; }

.card:active { transform: translateY(0); }
.card:active::before { opacity: .1; }

/* Focus visible */
.card:focus-visible {
  outline: 2px solid var(--md-primary);
  outline-offset: 2px;
}

/* Icon wrapper */
.card__icon-wrap {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.card__icon-wrap .material-symbols-rounded { font-size: 24px; }

/* Colour variants */
.card__icon-wrap--blue   { background: rgba(100,181,246,.15); color: #64b5f6; }
.card__icon-wrap--green  { background: rgba(102,187,106,.15); color: #66bb6a; }
.card__icon-wrap--orange { background: rgba(255,183,77,.15);  color: #ffb74d; }
.card__icon-wrap--teal   { background: rgba(77,208,225,.15);  color: #4dd0e1; }
.card__icon-wrap--purple { background: rgba(206,147,216,.15); color: #ce93d8; }
.card__icon-wrap--pink   { background: rgba(240,98,146,.15);  color: #f06292; }
.card__icon-wrap--red    { background: rgba(239,83,80,.15);   color: #ef5350; }
.card__icon-wrap--indigo { background: rgba(121,134,203,.15); color: #7986cb; }

.card__body { flex: 1; min-width: 0; }

.card__name {
  font-size: 15px;
  font-weight: 500;
  color: var(--md-on-surface);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card__desc {
  font-size: 13px;
  color: var(--md-on-surface-variant);
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card__arrow {
  font-size: 20px;
  color: var(--md-on-surface-dim);
  flex-shrink: 0;
  transition: transform .2s var(--motion-emphasized), color .2s;
}

.card:hover .card__arrow {
  transform: translateX(3px);
  color: var(--md-primary);
}

/* Hidden card (search filter) */
.card[hidden] { display: none; }

/* ============================================================
   FAB  (Floating Action Button)
   ============================================================ */
.fab {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 90;
  width: 56px;
  height: 56px;
  border-radius: var(--r-lg);
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow:
    0 3px 5px rgba(0,0,0,.3),
    0 6px 12px rgba(0,0,0,.25);
  transition:
    background .2s,
    transform .2s var(--motion-emphasized),
    box-shadow .2s;
}

.fab:hover {
  background: color-mix(in srgb, var(--md-primary-container) 85%, var(--md-primary) 15%);
  transform: scale(1.05);
  box-shadow:
    0 6px 10px rgba(0,0,0,.35),
    0 12px 20px rgba(0,0,0,.3);
}

.fab:active { transform: scale(.96); }
.fab .material-symbols-rounded { font-size: 24px; }

/* ============================================================
   DIALOG  (MD3 Basic Dialog)
   ============================================================ */
.dialog-backdrop {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0,0,0,.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s var(--motion-standard);
}

.dialog-backdrop.is-open {
  opacity: 1;
  pointer-events: all;
}

.dialog {
  background: var(--md-surface-2);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--r-xl);
  padding: 24px 24px 20px;
  max-width: 440px;
  width: 100%;
  transform: scale(.92) translateY(12px);
  transition: transform .3s var(--motion-emphasized);
}

.dialog-backdrop.is-open .dialog {
  transform: scale(1) translateY(0);
}

.dialog__title {
  font-size: 20px;
  font-weight: 500;
  color: var(--md-on-surface);
  margin-bottom: 12px;
}

.dialog__subtitle {
  font-size: 14px;
  color: var(--md-on-surface-variant);
  line-height: 1.6;
  margin-bottom: 16px;
}

.dialog__hint {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  background: var(--md-surface-3);
  border-radius: var(--r-md);
  padding: 14px 16px;
  font-size: 13px;
  color: var(--md-on-surface-variant);
  line-height: 1.6;
  margin-bottom: 24px;
}

.dialog__hint-icon {
  font-size: 20px;
  color: var(--md-primary);
  flex-shrink: 0;
  margin-top: 1px;
}

.dialog__actions {
  display: flex;
  justify-content: flex-end;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .4px;
  border: none;
  cursor: pointer;
  border-radius: var(--r-full);
  padding: 10px 24px;
  transition: background .15s, box-shadow .15s;
}

.btn--text {
  background: transparent;
  color: var(--md-primary);
}

.btn--text:hover {
  background: color-mix(in srgb, var(--md-primary) 12%, transparent);
}

/* ============================================================
   CODE INLINE
   ============================================================ */
code {
  font-family: 'JetBrains Mono', 'Fira Mono', monospace;
  font-size: .85em;
  background: var(--md-surface-3);
  color: var(--md-primary);
  padding: 2px 6px;
  border-radius: var(--r-xs);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  text-align: center;
  padding: 20px 24px;
  font-size: 13px;
  color: var(--md-on-surface-dim);
  border-top: 1px solid var(--md-outline-variant);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 600px) {
  .app-bar__inner { padding: 0 16px; }
  .app-bar__title { font-size: 18px; }
  .status-label   { display: none; }

  .main { padding: 0 16px 100px; }

  .hero { padding: 48px 0 36px; }
  .hero__title { font-size: 28px; }

  .fab { bottom: 20px; right: 16px; }
  .card { flex: 0 0 100%; }
}