/* ===== RESET ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  -moz-tab-size: 4;
  tab-size: 4;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

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

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

button {
  background: none;
  border: none;
  cursor: pointer;
}

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

ul,
ol {
  list-style: none !important;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

blockquote,
q {
  quotes: none;
}

blockquote::before,
blockquote::after,
q::before,
q::after {
  content: "";
  content: none;
}

/* ===== DESIGN TOKENS ===== */
:root {
  /* Colors */
  --bg-charcoal: #121417;
  --surface-slate: #1c2026;
  --surface-slate-deep: #15181d;
  --text-white: #ffffff;
  --text-muted: #a8b0ba;
  --copper: #b87333;
  --copper-bright: #d98c4a;
  --champagne: #e8d5b7;
  --felt-emerald: #0f6b4f;
  --felt-emerald-hover: #148a66;
  --border-subtle: #2a3038;

  /* Typography */
  --font-heading: "Space Grotesk", "Inter", sans-serif;
  --font-body: "Inter", "Space Grotesk", sans-serif;

  --text-display: 64px;
  --text-h1: 48px;
  --text-h2: 36px;
  --text-h3: 28px;
  --text-h4: 22px;
  --text-body-large: 18px;
  --text-body: 16px;
  --text-small: 14px;
  --text-caption: 12px;
  --text-button: 16px;

  --leading-display: 1.05;
  --leading-h1: 1.1;
  --leading-h2: 1.15;
  --leading-h3: 1.2;
  --leading-h4: 1.25;
  --leading-body-large: 1.6;
  --leading-body: 1.6;
  --leading-small: 1.5;
  --leading-caption: 1.4;
  --leading-button: 1;

  --tracking-display: -0.02em;
  --tracking-h1: -0.015em;
  --tracking-h2: -0.01em;
  --tracking-h3: -0.005em;
  --tracking-h4: 0;
  --tracking-body-large: 0;
  --tracking-body: 0;
  --tracking-small: 0.01em;
  --tracking-caption: 0.02em;
  --tracking-button: 0.02em;

  /* Spacing */
  --space-2: 2px;
  --space-4: 4px;
  --space-8: 8px;
  --space-12: 12px;
  --space-16: 16px;
  --space-24: 24px;
  --space-32: 32px;
  --space-48: 48px;
  --space-64: 64px;
  --space-96: 96px;
  --space-128: 128px;

  /* Containers */
  --container-max: 1280px;
  --container-padding-mobile: 24px;
  --container-padding-tablet: 40px;
  --container-padding-desktop: 64px;
  --nested-container-padding: 16px;
  --grid-gap: 24px;
  --gallery-gap: 16px;

  /* Surfaces */
  --radius-card: 4px;
  --radius-button: 2px;
  --radius-input: 2px;
  --radius-image: 4px;
  --radius-badge: 2px;

  /* Shadows */
  --shadow-folded-card:
    0 1px 0 rgba(184, 115, 51, 0.15),
    0 12px 24px -8px rgba(0, 0, 0, 0.6),
    0 24px 48px -16px rgba(0, 0, 0, 0.4);
  --shadow-folded-card-hover:
    0 1px 0 rgba(217, 140, 74, 0.25),
    0 16px 32px -8px rgba(0, 0, 0, 0.7),
    0 32px 64px -16px rgba(0, 0, 0, 0.5);
  --shadow-button-active: 0 1px 2px rgba(0, 0, 0, 0.4);

  /* Transitions */
  --transition-color: 200ms ease-out;
  --transition-shadow: 300ms ease-out;
  --transition-expand: 300ms ease-in-out;
}

/* ===== DOCUMENT TYPOGRAPHY ===== */
body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  font-weight: 400;
  line-height: var(--leading-body);
  letter-spacing: var(--tracking-body);
  color: var(--text-white);
  background-color: var(--bg-charcoal);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  color: var(--text-white);
  font-weight: 600;
  line-height: 1.2;
}

h1 {
  font-size: var(--text-h1);
  font-weight: 700;
  line-height: var(--leading-h1);
  letter-spacing: var(--tracking-h1);
  margin-block-end: var(--space-24);
}

h2 {
  font-size: var(--text-h2);
  font-weight: 600;
  line-height: var(--leading-h2);
  letter-spacing: var(--tracking-h2);
  margin-block-end: var(--space-16);
}

h3 {
  font-size: var(--text-h3);
  font-weight: 600;
  line-height: var(--leading-h3);
  letter-spacing: var(--tracking-h3);
  margin-block-end: var(--space-12);
}

h4 {
  font-size: var(--text-h4);
  font-weight: 600;
  line-height: var(--leading-h4);
  letter-spacing: var(--tracking-h4);
  margin-block-end: var(--space-8);
}

h5,
h6 {
  font-size: var(--text-body);
  font-weight: 600;
  line-height: var(--leading-body);
  letter-spacing: var(--tracking-body);
  margin-block-end: var(--space-8);
}

p {
  margin-block-end: var(--space-16);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  letter-spacing: var(--tracking-body);
}

p:last-child {
  margin-block-end: 0;
}

a {
  color: var(--text-white);
  transition: color var(--transition-color);
}

a:hover {
  color: var(--copper-bright);
}

strong,
b {
  font-weight: 600;
}

em,
i {
  font-style: italic;
}

small {
  font-size: var(--text-small);
  line-height: var(--leading-small);
  letter-spacing: var(--tracking-small);
}

blockquote {
  font-family: var(--font-heading);
  font-size: var(--text-h3);
  font-weight: 600;
  line-height: var(--leading-h3);
  letter-spacing: var(--tracking-h3);
  color: var(--champagne);
  margin-block-end: var(--space-24);
  padding-inline-start: var(--space-24);
  border-inline-start: 2px solid var(--copper);
}

blockquote:last-child {
  margin-block-end: 0;
}

ul,
ol {
  margin-block-end: var(--space-16);
  padding-inline-start: var(--space-24);
}

ul:last-child,
ol:last-child {
  margin-block-end: 0;
}

/* Editorial unordered list with copper diamond bullets */
ul:not([class]) {
  list-style: none !important;
  padding-inline-start: 0;
}

ul:not([class]) > li {
  position: relative;
  padding-inline-start: var(--space-24);
  margin-block-end: var(--space-8);
}

ul:not([class]) > li::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  background-color: var(--copper);
  transform: rotate(45deg);
}

ul:not([class]) > li:last-child {
  margin-block-end: 0;
}

ol:not([class]) {
  list-style: decimal !important;
  padding-inline-start: var(--space-24);
}

ol:not([class]) > li {
  margin-block-end: var(--space-8);
}

ol:not([class]) > li:last-child {
  margin-block-end: 0;
}

hr {
  border: none;
  border-top: 1px solid var(--border-subtle);
  margin-block: var(--space-32);
}

/* ===== MEDIA DEFAULTS ===== */
img {
  border-radius: var(--radius-image);
}

figure {
  margin-block-end: var(--space-24);
}

figure:last-child {
  margin-block-end: 0;
}

figcaption {
  font-size: var(--text-small);
  line-height: var(--leading-small);
  letter-spacing: var(--tracking-small);
  color: var(--text-muted);
  margin-block-start: var(--space-8);
}

/* ===== FORM DEFAULTS ===== */
input,
textarea,
select {
  width: 100%;
  background-color: var(--surface-slate-deep);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-input);
  color: var(--text-white);
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  letter-spacing: var(--tracking-body);
  padding: var(--space-12) var(--space-16);
  transition: border-color var(--transition-color);
}

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

input:focus,
textarea:focus,
select:focus {
  outline: 2px solid var(--copper-bright);
  outline-offset: 2px;
  border-color: var(--copper-bright);
}

textarea {
  min-height: 120px;
  resize: vertical;
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23A8B0BA' stroke-width='2' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-16) center;
  padding-inline-end: var(--space-48);
}

label {
  display: block;
  font-size: var(--text-small);
  font-weight: 500;
  line-height: var(--leading-small);
  letter-spacing: var(--tracking-small);
  color: var(--text-muted);
  margin-block-end: var(--space-8);
}

fieldset {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: var(--space-24);
  margin-block-end: var(--space-24);
}

fieldset:last-child {
  margin-block-end: 0;
}

legend {
  font-family: var(--font-heading);
  font-size: var(--text-body);
  font-weight: 600;
  color: var(--text-white);
  padding-inline: var(--space-8);
}

/* ===== CONTAINERS ===== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding-mobile);
}

.nested-container {
  padding: var(--nested-container-padding);
  border: 1px solid var(--copper);
  border-radius: var(--radius-card);
}

/* ===== BUTTONS ===== */
.button,
button[type="submit"],
input[type="submit"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: var(--space-16) var(--space-24);
  background-color: var(--felt-emerald);
  color: var(--text-white);
  font-family: var(--font-body);
  font-size: var(--text-button);
  font-weight: 600;
  line-height: var(--leading-button);
  letter-spacing: var(--tracking-button);
  text-transform: uppercase;
  border: 1px solid transparent;
  border-radius: var(--radius-button);
  transition:
    background-color var(--transition-color),
    border-color var(--transition-color),
    box-shadow var(--transition-shadow);
}

.button:hover,
button[type="submit"]:hover,
input[type="submit"]:hover {
  background-color: var(--felt-emerald-hover);
  border-color: var(--copper-bright);
}

.button:focus-visible,
button[type="submit"]:focus-visible,
input[type="submit"]:focus-visible {
  outline: 2px solid var(--copper-bright);
  outline-offset: 2px;
}

.button:active,
button[type="submit"]:active,
input[type="submit"]:active {
  transform: translateY(1px);
  box-shadow: var(--shadow-button-active);
}

.button--secondary {
  background-color: transparent;
  border-color: var(--copper);
  color: var(--text-white);
}

.button--secondary:hover {
  background-color: rgba(184, 115, 51, 0.1);
  border-color: var(--copper-bright);
}

/* ===== CARDS ===== */
.card {
  background-color: var(--surface-slate);
  border: 1px solid var(--copper);
  border-radius: var(--radius-card);
  padding: var(--space-24);
  box-shadow: var(--shadow-folded-card);
  transition:
    border-color var(--transition-color),
    box-shadow var(--transition-shadow);
}

.card:hover {
  border-color: var(--copper-bright);
  box-shadow: var(--shadow-folded-card-hover);
}

.card > :last-child {
  margin-block-end: 0;
}

/* ===== BADGES ===== */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4) var(--space-8);
  background-color: rgba(232, 213, 183, 0.15);
  color: var(--champagne);
  font-size: var(--text-caption);
  font-weight: 600;
  line-height: var(--leading-caption);
  letter-spacing: var(--tracking-caption);
  border-radius: var(--radius-badge);
}

/* ===== DIVIDERS ===== */
.divider {
  border: none;
  border-top: 1px solid var(--border-subtle);
  margin-block: var(--space-32);
}

/* ===== NAVIGATION TOGGLE ===== */
.nav-toggle {
  flex-direction: column;
}

/* ===== RESPONSIVE TYPOGRAPHY ===== */
@media (max-width: 1024px) {
  :root {
    --text-display: 48px;
    --text-h1: 40px;
    --text-h2: 32px;
    --text-h3: 26px;
    --text-h4: 20px;
  }
}

@media (max-width: 768px) {
  :root {
    --text-display: 40px;
    --text-h1: 32px;
    --text-h2: 28px;
    --text-h3: 24px;
    --text-h4: 20px;
  }

  .container {
    padding-inline: var(--container-padding-mobile);
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .container {
    padding-inline: var(--container-padding-tablet);
  }
}

@media (min-width: 1025px) {
  .container {
    padding-inline: var(--container-padding-desktop);
  }
}

/* ===== REDUCED MOTION ===== */
@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;
  }

  .button:active,
  button[type="submit"]:active,
  input[type="submit"]:active {
    transform: none;
  }

  .card:hover {
    box-shadow: var(--shadow-folded-card);
  }
}
html, body {
  overflow-x: clip;
  max-width: 100%;
}

img, video, svg {
  max-width: 100%;
  height: auto;
}