/* base.css — Merged normalize reset + base styles
   Uses design tokens from variables.css
   ========================================================================== */

/* === Minimal CSS Reset (normalize.css essentials) === */

html {
  line-height: 1.15;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
}

main {
  display: block;
}

hr {
  box-sizing: content-box;
  height: 0;
  overflow: visible;
}

pre {
  font-family: var(--font-code), monospace;
  font-size: 1em;
}

a {
  background-color: transparent;
}

abbr[title] {
  border-bottom: none;
  text-decoration: underline dotted;
}

b,
strong {
  font-weight: bolder;
}

code,
kbd,
samp {
  font-family: var(--font-code), monospace;
  font-size: 1em;
}

small {
  font-size: 80%;
}

sub,
sup {
  font-size: 75%;
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}

sub {
  bottom: -0.25em;
}

sup {
  top: -0.5em;
}

img {
  border-style: none;
}

button,
input,
optgroup,
select,
textarea {
  font-family: inherit;
  font-size: 100%;
  line-height: 1.15;
  margin: 0;
}

button,
input {
  overflow: visible;
}

button,
select {
  text-transform: none;
}

button,
[type="button"],
[type="reset"],
[type="submit"] {
  -webkit-appearance: button;
}

button::-moz-focus-inner,
[type="button"]::-moz-focus-inner,
[type="reset"]::-moz-focus-inner,
[type="submit"]::-moz-focus-inner {
  border-style: none;
  padding: 0;
}

button:-moz-focusring,
[type="button"]:-moz-focusring,
[type="reset"]:-moz-focusring,
[type="submit"]:-moz-focusring {
  outline: 1px dotted ButtonText;
}

fieldset {
  padding: 0.35em 0.75em 0.625em;
}

legend {
  box-sizing: border-box;
  color: inherit;
  display: table;
  max-width: 100%;
  padding: 0;
  white-space: normal;
}

progress {
  vertical-align: baseline;
}

textarea {
  overflow: auto;
}

[type="checkbox"],
[type="radio"] {
  box-sizing: border-box;
  padding: 0;
}

[type="number"]::-webkit-inner-spin-button,
[type="number"]::-webkit-outer-spin-button {
  height: auto;
}

[type="search"] {
  -webkit-appearance: textfield;
  outline-offset: -2px;
}

[type="search"]::-webkit-search-decoration {
  -webkit-appearance: none;
}

::-webkit-file-upload-button {
  -webkit-appearance: button;
  font: inherit;
}

details {
  display: block;
}

summary {
  display: list-item;
}

template {
  display: none;
}

[hidden] {
  display: none;
}

/* === Box Model === */

html {
  box-sizing: border-box;
  font-size: 16px;
  scroll-behavior: smooth;
}

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

/* === Body === */

body {
  font-family: var(--font-body);
  line-height: 1.6;
  background: var(--bg);
  color: var(--text);
  padding: 0;
  transition:
    background-color var(--transition-normal),
    color var(--transition-normal);
}

/* === Typography === */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-top: 0;
  margin-bottom: var(--space-md);
}

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 {
  margin-top: 0;
  margin-bottom: var(--space-md);
}

/* === Links === */

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-hover);
}

/* === Container === */

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 2rem);
}

/* === Buttons === */

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-base);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: none;
  text-decoration: none;
  line-height: 1;
}

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

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

.btn-secondary {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}

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

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: var(--text-sm);
}

/* === Form Base Styles === */

label {
  display: block;
  margin-bottom: var(--space-sm);
  font-weight: 600;
  color: var(--text);
}

input,
textarea,
select {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  margin-bottom: var(--space-md);
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
  outline: none;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-soft);
}

/* === Utilities === */

.text-center { text-align: center; }
.text-right  { text-align: right; }
.text-left   { text-align: left; }

.hidden {
  display: none;
}

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

/* === Scroll Reveal === */

.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition:
    opacity var(--transition-normal),
    transform var(--transition-normal);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* === Mobile Responsive === */

@media (max-width: 640px) {
  html {
    font-size: 14px;
  }

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