/* =========================================================================
   Xilyxis Design System — Components
   Reusable class-based primitives. Load AFTER colors_and_type.css.

   All components sit inside a .xlx wrapper so they pick up theme tokens.
   ========================================================================= */

/* ---------- App background (Mt. Rainier silhouette, fixed) --------------- */
.xlx-bg-hero {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-color: var(--xlx-bg);
  background-image:
    /* Dark overlay keeps contrast over the photo */
    linear-gradient(180deg, rgba(11, 18, 32, 0.45) 0%, rgba(11, 18, 32, 0.70) 100%),
    url('assets/mt-rainier-silhouette.webp');
  background-size: cover;
  background-position: center bottom;
  background-attachment: fixed;
  background-repeat: no-repeat;
}

[data-palette="linen"][data-theme="dark"] .xlx-bg-hero,
[data-palette="linen"]:not([data-theme="light"]) .xlx-bg-hero {
  background-image:
    linear-gradient(180deg, rgba(23, 19, 15, 0.55) 0%, rgba(23, 19, 15, 0.88) 100%),
    url('assets/mt-rainier-silhouette.webp');
}
[data-palette="linen"][data-theme="light"] .xlx-bg-hero {
  background-image:
    linear-gradient(180deg, rgba(238, 234, 224, 0.60) 0%, rgba(238, 234, 224, 0.25) 100%),
    url('assets/mt-rainier-silhouette.webp');
}

[data-theme="light"] .xlx-bg-hero {
  background-image:
    linear-gradient(180deg, rgba(238, 242, 247, 0.55) 0%, rgba(238, 242, 247, 0.15) 100%),
    url('assets/mt-rainier-silhouette.webp');
}

/* Subtle aurora — optional enhancement, adds color to dark hero areas */
.xlx-bg-aurora::before {
  content: "";
  position: fixed;
  inset: -20%;
  z-index: -1;
  background:
    radial-gradient(40% 50% at 20% 30%, rgba(163, 218, 255, 0.18), transparent 60%),
    radial-gradient(35% 45% at 80% 20%, rgba(123, 196, 242, 0.14), transparent 60%),
    radial-gradient(45% 50% at 60% 90%, rgba(194, 238, 255, 0.10), transparent 60%);
  pointer-events: none;
  filter: blur(40px);
}

/* ========================== Glass surfaces ============================== */
.xlx-glass {
  background-color: var(--xlx-glass);
  backdrop-filter: blur(var(--xlx-glass-blur)) saturate(var(--xlx-glass-saturate));
  -webkit-backdrop-filter: blur(var(--xlx-glass-blur)) saturate(var(--xlx-glass-saturate));
  border: 1px solid var(--xlx-glass-border);
  box-shadow: var(--xlx-shadow-md);
  border-radius: var(--xlx-radius-lg);
}

.xlx-glass-strong {
  background-color: var(--xlx-glass-strong);
  backdrop-filter: blur(calc(var(--xlx-glass-blur) * 1.25)) saturate(var(--xlx-glass-saturate));
  -webkit-backdrop-filter: blur(calc(var(--xlx-glass-blur) * 1.25)) saturate(var(--xlx-glass-saturate));
  border: 1px solid var(--xlx-glass-border-hi);
  box-shadow: var(--xlx-shadow-lg);
  border-radius: var(--xlx-radius-xl);
}

/* Inner highlight — gives glass a glossy top edge. Apply with class="xlx-glass xlx-glass-gloss" */
.xlx-glass-gloss {
  position: relative;
  overflow: hidden;
}
.xlx-glass-gloss::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.18) 0%,
    rgba(255, 255, 255, 0) 35%,
    rgba(255, 255, 255, 0) 100%
  );
  mix-blend-mode: overlay;
}

/* ============================== Buttons ================================= */
.xlx-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  border-radius: var(--xlx-radius-md);
  font-family: inherit;
  font-size: var(--xlx-text-base);
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--xlx-duration-1) var(--xlx-ease),
              background-color var(--xlx-duration-2) var(--xlx-ease),
              color var(--xlx-duration-2) var(--xlx-ease),
              border-color var(--xlx-duration-2) var(--xlx-ease),
              box-shadow var(--xlx-duration-2) var(--xlx-ease);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
}
.xlx-btn:focus-visible { outline: none; box-shadow: var(--xlx-ring); }
.xlx-btn:active       { transform: translateY(1px); }
.xlx-btn:disabled     { opacity: 0.5; cursor: not-allowed; transform: none; }

/* Sizes */
.xlx-btn-sm { padding: 0.375rem 0.875rem; font-size: var(--xlx-text-sm); border-radius: var(--xlx-radius-sm); }
.xlx-btn-md { padding: 0.625rem 1.25rem; font-size: var(--xlx-text-base); }
.xlx-btn-lg { padding: 0.875rem 1.75rem; font-size: var(--xlx-text-lg); }

/* Variants */
.xlx-btn-primary {
  background-color: var(--xlx-brand);
  color: var(--xlx-brand-ink);
}
.xlx-btn-primary:hover {
  background-color: var(--xlx-brand-light);
  box-shadow: var(--xlx-shadow-glow);
}

.xlx-btn-secondary {
  background-color: transparent;
  border-color: var(--xlx-brand);
  color: var(--xlx-brand);
}
.xlx-btn-secondary:hover {
  background-color: var(--xlx-brand);
  color: var(--xlx-brand-ink);
}

.xlx-btn-ghost {
  background-color: transparent;
  color: var(--xlx-fg-2);
}
.xlx-btn-ghost:hover {
  background-color: var(--xlx-surface-2);
  color: var(--xlx-fg);
}

[data-theme="light"] .xlx-btn-ghost:hover {
  background-color: var(--xlx-surface-muted);
}

.xlx-btn-glass {
  background-color: var(--xlx-glass);
  backdrop-filter: blur(var(--xlx-glass-blur));
  -webkit-backdrop-filter: blur(var(--xlx-glass-blur));
  border-color: var(--xlx-glass-border);
  color: var(--xlx-fg);
}
.xlx-btn-glass:hover {
  background-color: var(--xlx-glass-strong);
  border-color: var(--xlx-glass-border-hi);
}

.xlx-btn-danger {
  background-color: var(--xlx-danger);
  color: #fff;
}
.xlx-btn-danger:hover { filter: brightness(1.1); }

/* ============================== Cards =================================== */
.xlx-card {
  background-color: var(--xlx-glass);
  backdrop-filter: blur(var(--xlx-glass-blur)) saturate(var(--xlx-glass-saturate));
  -webkit-backdrop-filter: blur(var(--xlx-glass-blur)) saturate(var(--xlx-glass-saturate));
  border: 1px solid var(--xlx-glass-border);
  box-shadow: var(--xlx-shadow-md);
  border-radius: var(--xlx-radius-lg);
  padding: var(--xlx-space-5);
  transition: transform var(--xlx-duration-3) var(--xlx-ease-out),
              background-color var(--xlx-duration-3) var(--xlx-ease),
              border-color var(--xlx-duration-3) var(--xlx-ease),
              box-shadow var(--xlx-duration-3) var(--xlx-ease);
}
.xlx-card:hover {
  transform: translateY(-4px);
  background-color: var(--xlx-glass-strong);
  border-color: var(--xlx-glass-border-hi);
  box-shadow: var(--xlx-shadow-lg);
}

.xlx-card-solid {
  background-color: var(--xlx-surface);
  border: 1px solid var(--xlx-border);
  border-radius: var(--xlx-radius-lg);
  padding: var(--xlx-space-6);
  box-shadow: var(--xlx-shadow-sm);
  transition: all var(--xlx-duration-3) var(--xlx-ease);
}
.xlx-card-solid:hover {
  background-color: var(--xlx-bg-raised);
  border-color: var(--xlx-border-strong);
  box-shadow: var(--xlx-shadow-md);
}

/* Feature tile — used inside sections as a lighter-weight card */
.xlx-tile {
  background-color: var(--xlx-surface-muted);
  border: 1px solid var(--xlx-border-subtle);
  border-radius: var(--xlx-radius-md);
  padding: var(--xlx-space-4);
}

/* ============================== Inputs ================================== */
.xlx-input, .xlx-select, .xlx-textarea {
  width: 100%;
  padding: 0.625rem 0.875rem;
  background-color: var(--xlx-surface);
  border: 1px solid var(--xlx-border);
  border-radius: var(--xlx-radius-md);
  color: var(--xlx-fg);
  font-family: inherit;
  font-size: var(--xlx-text-base);
  line-height: var(--xlx-leading-snug);
  transition: border-color var(--xlx-duration-2) var(--xlx-ease),
              box-shadow var(--xlx-duration-2) var(--xlx-ease),
              background-color var(--xlx-duration-2) var(--xlx-ease);
}
.xlx-input::placeholder,
.xlx-textarea::placeholder { color: var(--xlx-fg-subtle); }

.xlx-input:focus,
.xlx-select:focus,
.xlx-textarea:focus {
  outline: none;
  border-color: var(--xlx-brand);
  box-shadow: 0 0 0 3px rgba(163, 218, 255, 0.18);
}

.xlx-label {
  display: block;
  font-size: var(--xlx-text-sm);
  font-weight: 500;
  color: var(--xlx-fg-1);
  margin-bottom: var(--xlx-space-2);
}

.xlx-hint {
  font-size: var(--xlx-text-sm);
  color: var(--xlx-fg-muted);
  margin-top: var(--xlx-space-2);
}

/* ============================== Badges ================================== */
.xlx-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.625rem;
  border-radius: var(--xlx-radius-full);
  font-size: var(--xlx-text-xs);
  font-weight: 600;
  letter-spacing: 0.02em;
  background-color: var(--xlx-surface-muted);
  color: var(--xlx-fg-1);
  border: 1px solid var(--xlx-border-subtle);
}
.xlx-badge-glass {
  background-color: var(--xlx-glass-strong);
  color: var(--xlx-fg);
  border-color: var(--xlx-glass-border-hi);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.xlx-badge-brand   { background: var(--xlx-brand); color: var(--xlx-brand-ink); border-color: transparent; }
.xlx-badge-success { background: rgba(52, 211, 153, 0.15); color: var(--xlx-success); border-color: rgba(52, 211, 153, 0.35); }
.xlx-badge-warning { background: rgba(251, 191, 36, 0.15); color: var(--xlx-warning); border-color: rgba(251, 191, 36, 0.35); }
.xlx-badge-danger  { background: rgba(248, 113, 113, 0.15); color: var(--xlx-danger);  border-color: rgba(248, 113, 113, 0.35); }

/* ============================== Nav / Header =========================== */
.xlx-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: var(--xlx-glass);
  backdrop-filter: blur(var(--xlx-glass-blur)) saturate(var(--xlx-glass-saturate));
  -webkit-backdrop-filter: blur(var(--xlx-glass-blur)) saturate(var(--xlx-glass-saturate));
  border-bottom: 1px solid var(--xlx-glass-border);
}

.xlx-header-inner {
  max-width: 80rem;
  margin: 0 auto;
  padding: 0 var(--xlx-space-6);
  height: 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.xlx-nav-link {
  position: relative;
  color: var(--xlx-fg-2);
  font-weight: 500;
  padding: 0.25rem 0;
  text-decoration: none;
  transition: color var(--xlx-duration-2) var(--xlx-ease);
}
.xlx-nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background-color: var(--xlx-brand);
  transition: width var(--xlx-duration-2) var(--xlx-ease);
}
.xlx-nav-link:hover { color: var(--xlx-fg); }
.xlx-nav-link:hover::after,
.xlx-nav-link.is-active::after { width: 100%; }
.xlx-nav-link.is-active { color: var(--xlx-fg); }

/* ============================== Container =============================== */
.xlx-container {
  width: 100%;
  max-width: 80rem;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--xlx-space-4);
  padding-right: var(--xlx-space-4);
}
@media (min-width: 640px) {
  .xlx-container { padding-left: var(--xlx-space-6); padding-right: var(--xlx-space-6); }
}
@media (min-width: 1024px) {
  .xlx-container { padding-left: var(--xlx-space-8); padding-right: var(--xlx-space-8); }
}
.xlx-container-sm { max-width: 42rem; }
.xlx-container-md { max-width: 56rem; }
.xlx-container-lg { max-width: 72rem; }
.xlx-container-xl { max-width: 80rem; }

/* ============================== Divider ================================= */
.xlx-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--xlx-border) 50%, transparent 100%);
  border: 0;
  margin: var(--xlx-space-8) 0;
}

/* ============================== Kbd ===================================== */
.xlx-kbd {
  display: inline-block;
  font-family: var(--xlx-font-mono);
  font-size: 0.8em;
  padding: 0.125rem 0.375rem;
  background-color: var(--xlx-surface);
  border: 1px solid var(--xlx-border);
  border-bottom-width: 2px;
  border-radius: var(--xlx-radius-sm);
  color: var(--xlx-fg-1);
}

/* =================== Focus-ring helper for any element ================== */
.xlx-focusable:focus-visible {
  outline: none;
  box-shadow: var(--xlx-ring);
  border-radius: var(--xlx-radius-md);
}