/* ==========================================================================
   Global Stylesheet
   Alcodex Technologies — base reset + element defaults.

   Loaded after variables.css. Page/component styles (added in later
   steps) should build on the tokens and base styles defined here.
   ========================================================================== */

/* --------------------------------------------------------------------
   Reset
   -------------------------------------------------------------------- */

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

* {
  margin: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  hanging-punctuation: allow-end;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

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

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

/* --------------------------------------------------------------------
   Document defaults
   -------------------------------------------------------------------- */

body {
  min-height: 100dvh;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--leading-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* --------------------------------------------------------------------
   Typography
   -------------------------------------------------------------------- */

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-semibold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
  overflow-wrap: break-word;
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p {
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
  overflow-wrap: break-word;
}

small {
  font-size: var(--text-sm);
}

strong, b {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

code, pre, kbd, samp {
  font-family: var(--font-mono);
  font-size: 0.925em;
}

pre {
  overflow-x: auto;
  padding: var(--space-4);
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

hr {
  border: none;
  border-top: 1px solid var(--color-border);
}

::selection {
  background-color: var(--color-primary-100);
  color: var(--color-neutral-950);
}

/* --------------------------------------------------------------------
   Links
   -------------------------------------------------------------------- */

a {
  color: var(--color-link);
  text-decoration: none;
  text-underline-offset: 0.2em;
  transition: color var(--transition-fast);
}

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

/* --------------------------------------------------------------------
   Buttons
   Native element reset only — button component styling comes later.
   -------------------------------------------------------------------- */

button {
  cursor: pointer;
  background: none;
  border: none;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast),
              color var(--transition-fast),
              border-color var(--transition-fast),
              box-shadow var(--transition-fast);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

/* Reusable button component — solid fill only, no gradients/glow */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color var(--transition-fast),
              color var(--transition-fast),
              border-color var(--transition-fast);
}

@media (max-width: 30rem) {
  .btn {
    max-width: 100%;
    white-space: normal;
    line-height: var(--leading-snug);
  }
}

.btn-primary {
  background-color: var(--color-brand);
  color: var(--color-text-inverse);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: var(--color-brand-hover);
  color: var(--color-text-inverse);
  text-decoration: none;
}

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

.btn-secondary:hover,
.btn-secondary:focus-visible {
  background-color: var(--color-bg-subtle);
  border-color: var(--color-text-primary);
  color: var(--color-text-primary);
  text-decoration: none;
}

/* On a dark/inverse background */
.btn-on-inverse.btn-secondary {
  color: var(--color-text-inverse);
  border-color: var(--color-neutral-700);
}

.btn-on-inverse.btn-secondary:hover,
.btn-on-inverse.btn-secondary:focus-visible {
  background-color: var(--color-neutral-900);
  border-color: var(--color-neutral-400);
  color: var(--color-text-inverse);
}

.btn-lg {
  padding: var(--space-4) var(--space-6);
  font-size: var(--text-base);
}

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

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

/* Visually hidden but available to assistive tech (e.g. a section's
   heading when the visual design omits a visible title). */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* --------------------------------------------------------------------
   Form elements
   -------------------------------------------------------------------- */

input,
textarea,
select {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast),
              box-shadow var(--transition-fast);
}

textarea {
  resize: vertical;
}

input::placeholder,
textarea::placeholder {
  color: var(--color-text-muted);
}

label {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

/* --------------------------------------------------------------------
   Tables
   -------------------------------------------------------------------- */

table {
  border-collapse: collapse;
  width: 100%;
}

/* --------------------------------------------------------------------
   Accessibility
   -------------------------------------------------------------------- */

:focus:not(:focus-visible) {
  outline: none;
}

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

/* Shared content structure for application and deployment guidance. */
.page-breadcrumbs {
  padding-block: var(--space-4);
  font-size: var(--text-sm);
}

.page-breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-3);
  padding: 0;
  list-style: none;
}

.page-breadcrumbs li {
  display: inline-flex;
  align-items: baseline;
  gap: var(--space-3);
}

.page-breadcrumbs li + li::before {
  content: "/";
  color: var(--color-text-muted);
}

.page-breadcrumbs [aria-current="page"] {
  color: var(--color-text-secondary);
}

.content-section {
  padding-block: var(--space-section-sm);
  scroll-margin-top: 7rem;
}

.product-page #measurements {
  scroll-margin-top: 7rem;
}

.content-section-subtle {
  background: var(--color-bg-subtle);
  border-block: 1px solid var(--color-border);
}

.content-intro {
  max-width: 48rem;
  margin-bottom: var(--space-8);
}

.content-intro h2,
.content-questions > h2 {
  font-size: var(--text-3xl);
}

.content-intro p {
  margin-top: var(--space-4);
}

.content-card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-6);
}

.content-card {
  min-width: 0;
  padding: var(--space-6);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.content-card h3 {
  font-size: var(--text-xl);
}

.content-card p {
  margin-top: var(--space-3);
}

.content-questions > h2 {
  margin-bottom: var(--space-5);
}

.content-questions details {
  padding-block: var(--space-5);
  border-bottom: 1px solid var(--color-border);
}

.content-questions summary {
  cursor: pointer;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.content-questions details p {
  max-width: 64rem;
  margin-top: var(--space-4);
}

.content-page-links {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-3) var(--space-6);
  padding-block: var(--space-5);
  font-size: var(--text-sm);
}

.content-page-links > span {
  font-weight: var(--font-weight-semibold);
}

.content-page-links a {
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

@media (max-width: 47.9375rem) {
  .content-card-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}