/* American Comfort Masters — theme.css
 * The full palette.md :root theme + base typography/layout primitives.
 * Premium coastal feel: serene neutrals, deep teal-slate authority, denim-blue
 * calls to action. WCAG-AA-tuned text colors. Hand-written, no build step.
 *
 * Loaded first on every page. Page-specific rules live in store.css.
 */

:root {
  /* Brand */
  --color-primary:      #3D4D56; /* Deep Teal / Charcoal-Slate */
  --color-secondary:    #5B7069; /* Pewter Green */
  --color-accent:       #95ABAF; /* Dusty Blue (cool) */
  --color-accent-warm:  #CAB3A2; /* Sand (warm) */
  --color-highlight:    #B9DAE5; /* Powder Blue */

  /* Neutrals / surfaces */
  --color-bg:           #FEFEFE; /* White */
  --color-surface:      #EAEDE7; /* Off-White */
  --color-surface-warm: #DFDED5; /* Cream */
  --color-border:       #C5CEC8; /* Sea-Glass Gray */

  /* Text */
  --color-text:         #26323A; /* deep slate, 13:1 on white */
  --color-text-muted:   #5E6A66; /* muted slate-green, 5.6:1 on white */

  /* Action */
  --color-cta:          #41626E; /* Denim Blue */
  --color-cta-hover:    #345260; /* darker Denim for hover */
  --color-success:      #5B7069; /* Pewter Green */

  /* Derived design tokens (built only from the palette above) */
  --color-on-primary:   #FEFEFE;
  --color-on-cta:       #FEFEFE;
  --color-danger:       #8A3B36; /* in-family deep terracotta for invalid (AA on white) */

  /* Typography */
  --font-sans: "Helvetica Neue", Helvetica, Arial, system-ui, -apple-system,
    "Segoe UI", Roboto, sans-serif;
  --font-serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;

  --fs-300: 0.8125rem;
  --fs-400: 1rem;
  --fs-500: 1.25rem;
  --fs-600: 1.5rem;
  --fs-700: 2rem;
  --fs-800: 2.75rem;
  --fs-900: clamp(2.5rem, 6vw, 4.25rem);

  --lh-tight: 1.15;
  --lh-snug: 1.3;
  --lh-base: 1.6;

  /* Spacing scale */
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.5rem;
  --sp-6: 2rem;
  --sp-7: 3rem;
  --sp-8: 4.5rem;
  --sp-9: 7rem;

  /* Radii + elevation */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 999px;

  --shadow-sm: 0 1px 2px rgba(38, 50, 58, 0.06),
    0 2px 6px rgba(38, 50, 58, 0.06);
  --shadow-md: 0 4px 12px rgba(38, 50, 58, 0.08),
    0 10px 28px rgba(38, 50, 58, 0.10);
  --shadow-lg: 0 12px 40px rgba(38, 50, 58, 0.16);

  --maxw: 1180px;
  --header-h: 68px;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ------------------------------------------------------------------ reset */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-400);
  line-height: var(--lh-base);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img,
picture,
video,
svg {
  display: block;
  max-width: 100%;
}

button {
  font: inherit;
  cursor: pointer;
}

a {
  color: var(--color-cta);
  text-decoration: none;
}

a:hover {
  color: var(--color-cta-hover);
  text-decoration: underline;
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  line-height: var(--lh-tight);
  color: var(--color-primary);
  font-weight: 600;
  margin: 0 0 var(--sp-4);
}

p {
  margin: 0 0 var(--sp-4);
}

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

/* ------------------------------------------------------------- primitives */

.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--sp-5);
}

.eyebrow {
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: var(--fs-300);
  font-weight: 700;
  color: var(--color-secondary);
  margin: 0 0 var(--sp-2);
}

.muted {
  color: var(--color-text-muted);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* Buttons --------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-5);
  border: 1.5px solid transparent;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: var(--fs-400);
  line-height: 1;
  text-decoration: none;
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease),
    border-color 0.2s var(--ease), transform 0.12s var(--ease),
    box-shadow 0.2s var(--ease);
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  background: var(--color-cta);
  color: var(--color-on-cta);
  box-shadow: var(--shadow-sm);
}

.btn--primary:hover {
  background: var(--color-cta-hover);
  color: var(--color-on-cta);
  box-shadow: var(--shadow-md);
}

.btn--secondary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-border);
}

.btn--secondary:hover {
  background: var(--color-surface);
  color: var(--color-primary);
  border-color: var(--color-secondary);
}

.btn--ghost {
  background: transparent;
  color: var(--color-cta);
  padding-inline: var(--sp-3);
}

.btn--ghost:hover {
  color: var(--color-cta-hover);
  background: var(--color-surface);
}

.btn--lg {
  padding: var(--sp-4) var(--sp-6);
  font-size: var(--fs-500);
}

.btn--block {
  width: 100%;
}

.btn[disabled],
.btn[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Chips / badges -------------------------------------------------------- */

.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-1) var(--sp-3);
  border-radius: var(--radius-pill);
  font-size: var(--fs-300);
  font-weight: 600;
  background: var(--color-surface);
  color: var(--color-secondary);
}

.chip--highlight {
  background: var(--color-highlight);
  color: var(--color-primary);
}

/* Forms ----------------------------------------------------------------- */

label {
  font-weight: 600;
  font-size: var(--fs-300);
  color: var(--color-primary);
}

.field {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  margin-bottom: var(--sp-4);
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
input[type="search"],
select,
textarea {
  font: inherit;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--sp-3) var(--sp-3);
  width: 100%;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--color-secondary) 50%),
    linear-gradient(135deg, var(--color-secondary) 50%, transparent 50%);
  background-position: calc(100% - 18px) 55%, calc(100% - 12px) 55%;
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
  padding-right: var(--sp-7);
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-cta);
  box-shadow: 0 0 0 3px rgba(65, 98, 110, 0.18);
}

/* Constraint Validation: only show invalid state after user interaction */
input:user-invalid,
select:user-invalid,
textarea:user-invalid {
  border-color: var(--color-danger);
  box-shadow: 0 0 0 3px rgba(138, 59, 54, 0.14);
}

.field-error {
  color: var(--color-danger);
  font-size: var(--fs-300);
  font-weight: 600;
  min-height: 1.1em;
}

input:user-invalid ~ .field-error,
select:user-invalid ~ .field-error,
textarea:user-invalid ~ .field-error {
  display: block;
}

.check {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  padding: var(--sp-3);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.check:hover {
  border-color: var(--color-accent);
  background: var(--color-surface);
}

.check input {
  width: auto;
  margin-top: 3px;
  accent-color: var(--color-cta);
}

.check__label {
  font-weight: 500;
  font-size: var(--fs-400);
  color: var(--color-text);
}

.check__price {
  margin-left: auto;
  font-weight: 700;
  color: var(--color-secondary);
  white-space: nowrap;
}

/* Cards ----------------------------------------------------------------- */

.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

/* Skeleton / loading ---------------------------------------------------- */

.skeleton {
  background: linear-gradient(
    100deg,
    var(--color-surface) 30%,
    var(--color-surface-warm) 50%,
    var(--color-surface) 70%
  );
  background-size: 200% 100%;
  animation: shimmer 1.3s var(--ease) infinite;
  border-radius: var(--radius-sm);
}

@keyframes shimmer {
  to { background-position: -200% 0; }
}

/* Toast / inline messages ---------------------------------------------- */

.notice {
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: var(--fs-300);
}

.notice--error {
  background: rgba(138, 59, 54, 0.1);
  color: var(--color-danger);
}

.notice--ok {
  background: var(--color-surface);
  color: var(--color-success);
}

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