/* ============================================================
   ai-running-coach — design system (trail / mountain world)
   Loaded after Material palette.css, so these overrides win.
   ============================================================ */

@import url("https://fonts.googleapis.com/css2?family=Sora:wght@600;700;800&display=swap");

/* ---------- Tokens ---------- */

:root {
  --arc-pine-950: #0b1f16;
  --arc-pine-900: #0f2a1f;
  --arc-pine-800: #14352a;
  --arc-pine-700: #1a4536;
  --arc-pine-600: #1e4d3b;
  --arc-moss: #2f6b4f;
  --arc-lime: #a3e635;
  --arc-lime-strong: #84cc16;
  --arc-stone: #f6f4ef;
  --arc-stone-2: #efece3;
  --arc-ink: #1c2b24;
  --arc-ink-soft: #4a5a52;
  --arc-display: "Sora", "Inter", sans-serif;
}

/* ---------- Material palette overrides ---------- */

[data-md-color-scheme="default"] {
  --md-primary-fg-color: var(--arc-pine-800);
  --md-primary-fg-color--light: var(--arc-pine-600);
  --md-primary-fg-color--dark: var(--arc-pine-900);
  --md-primary-bg-color: var(--arc-stone);
  --md-accent-fg-color: var(--arc-lime-strong);
  --md-accent-fg-color--transparent: rgba(132, 204, 22, 0.16);
  --md-default-bg-color: var(--arc-stone);
  --md-default-fg-color: var(--arc-ink);
  --md-default-fg-color--light: var(--arc-ink-soft);
  --md-default-fg-color--lighter: #6b7a72;
  --md-typeset-a-color: var(--arc-pine-600);
  --md-typeset-a-color--active: var(--arc-pine-700);
  --md-code-bg-color: var(--arc-stone-2);
  --md-code-fg-color: var(--arc-ink);
  --md-footer-bg-color: var(--arc-pine-900);
  --md-footer-fg-color: #c9d4cd;
}

[data-md-color-scheme="slate"] {
  --md-primary-fg-color: var(--arc-pine-700);
  --md-primary-fg-color--light: var(--arc-pine-600);
  --md-primary-fg-color--dark: var(--arc-pine-900);
  --md-primary-bg-color: #e7ede9;
  --md-accent-fg-color: var(--arc-lime);
  --md-accent-fg-color--transparent: rgba(163, 230, 53, 0.16);
  --md-default-bg-color: #0d1410;
  --md-default-fg-color: #e7ede9;
  --md-default-fg-color--light: #b8c4bd;
  --md-default-fg-color--lighter: #8b9a92;
  --md-typeset-a-color: var(--arc-lime);
  --md-typeset-a-color--active: #c6f26a;
  --md-code-bg-color: #16201a;
  --md-code-fg-color: #e7ede9;
  --md-footer-bg-color: #0a1510;
  --md-footer-fg-color: #b8c4bd;
}

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

.md-typeset h1,
.md-typeset h2,
.md-typeset h3,
.md-typeset h4 {
  font-family: var(--arc-display);
  letter-spacing: -0.02em;
  font-weight: 700;
}

.md-typeset h1 {
  font-weight: 800;
  letter-spacing: -0.03em;
}

/* ---------- Homepage: full-bleed layout ---------- */

html:has(.arc-hero) .md-main__inner {
  margin-top: 0;
}

html:has(.arc-hero) .md-content__inner {
  margin: 0;
  padding: 0;
}

html:has(.arc-hero) .md-content__inner > .md-content__inner {
  margin: 0;
  padding: 0;
}

/* The auto-generated page-title h1 is redundant under the hero */
html:has(.arc-hero) .md-content__inner h1:first-of-type {
  display: none;
}

/* Transparent header over the hero, solid once scrolled */
html:has(.arc-hero) .md-header {
  background: transparent;
  box-shadow: none;
}

html:has(.arc-hero) .md-header--shadow {
  background: var(--md-primary-fg-color);
  box-shadow: 0 0 0.2rem rgba(0, 0, 0, 0.1), 0 0.2rem 0.4rem rgba(0, 0, 0, 0.3);
}

/* ---------- Hero ---------- */

.arc-hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: #fff;
}

.arc-hero__media {
  position: absolute;
  inset: 0;
}

.arc-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.arc-hero__scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(9, 20, 15, 0.62) 0%,
    rgba(9, 20, 15, 0.28) 45%,
    rgba(9, 20, 15, 0.78) 100%
  );
}

.arc-hero__inner {
  position: relative;
  z-index: 1;
  padding: 7rem 0 4.5rem;
}

.arc-hero__title {
  font-family: var(--arc-display);
  font-size: clamp(2.4rem, 6vw, 4.4rem);
  line-height: 1.04;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: #fff;
  margin: 0 0 1.4rem;
  max-width: 15ch;
}

.arc-hero__lead {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.92);
  max-width: 46ch;
  margin: 0 0 2.2rem;
}

.arc-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-bottom: 2.6rem;
}

.arc-hero .md-button {
  padding: 0.85rem 1.7rem;
  font-size: 1rem;
  border-radius: 2rem;
  font-weight: 600;
}

.arc-hero .md-button--primary {
  background: var(--arc-lime);
  border-color: var(--arc-lime);
  color: var(--arc-pine-900);
}

.arc-hero .md-button--primary:hover {
  background: #b6f04a;
  border-color: #b6f04a;
  color: var(--arc-pine-900);
}

.arc-hero .md-button:not(.md-button--primary) {
  border-color: rgba(255, 255, 255, 0.65);
  color: #fff;
}

.arc-hero .md-button:not(.md-button--primary):hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: #fff;
  color: #fff;
}

.arc-hero__meta {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.6rem;
  margin: 0;
  padding: 0;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.78);
}

.arc-hero__meta li {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.arc-hero__meta li::before {
  content: "";
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: var(--arc-lime);
}

/* One authored motion moment: hero rises on load */
@keyframes arc-rise {
  from {
    opacity: 0;
    transform: translateY(1.4rem);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.arc-hero__title {
  animation: arc-rise 0.8s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.arc-hero__lead {
  animation: arc-rise 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.15s both;
}

.arc-hero__actions {
  animation: arc-rise 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.3s both;
}

@media (prefers-reduced-motion: reduce) {
  .arc-hero__title,
  .arc-hero__lead,
  .arc-hero__actions {
    animation: none;
  }
}

/* ---------- Landing sections ---------- */

.arc-section {
  padding: 5rem 0;
}

.arc-section--tint {
  background: var(--arc-stone-2);
}

[data-md-color-scheme="slate"] .arc-section--tint {
  background: #111a15;
}

.arc-section--dark {
  background: var(--arc-pine-900);
  color: #e7ede9;
}

.arc-section__inner {
  max-width: 61rem;
  margin: 0 auto;
  padding: 0 1rem;
}

.arc-section h2 {
  font-size: clamp(1.8rem, 3.4vw, 2.6rem);
  line-height: 1.12;
  margin: 0 0 1.1rem;
  max-width: 24ch;
}

.arc-section--dark h2 {
  color: #fff;
}

.arc-section__intro {
  font-size: 1.1rem;
  line-height: 1.65;
  max-width: 58ch;
  margin: 0 0 2.8rem;
  color: var(--arc-ink-soft);
}

.arc-section--dark .arc-section__intro {
  color: #b8c4bd;
}

/* ---------- Team (agents) ---------- */

.arc-team {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.4rem;
}

.arc-agent {
  background: var(--arc-stone);
  border-radius: 1.1rem;
  padding: 1.8rem 1.8rem 1.6rem;
  box-shadow: 0 1px 2px rgba(20, 40, 30, 0.06), 0 8px 24px rgba(20, 40, 30, 0.08);
}

[data-md-color-scheme="slate"] .arc-agent {
  background: #16201a;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
}

.arc-agent h3 {
  font-size: 1.3rem;
  margin: 0 0 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.arc-agent h3 .arc-agent__icon {
  font-size: 1.15rem;
  line-height: 1;
}

.arc-agent p {
  margin: 0 0 1rem;
  line-height: 1.6;
  color: var(--arc-ink-soft);
}

[data-md-color-scheme="slate"] .arc-agent p {
  color: #b8c4bd;
}

.arc-agent blockquote {
  margin: 0;
  padding: 0.8rem 1rem;
  border-radius: 0.6rem;
  background: var(--arc-stone-2);
  font-size: 0.92rem;
  color: var(--arc-ink);
}

[data-md-color-scheme="slate"] .arc-agent blockquote {
  background: #1d2a22;
  color: #e7ede9;
}

.arc-agent blockquote p {
  margin: 0;
  color: inherit;
}

/* ---------- Flow ---------- */

.arc-flow {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.6rem;
  counter-reset: arc-step;
}

.arc-step {
  position: relative;
  padding-top: 0.4rem;
}

.arc-step__num {
  font-family: var(--arc-display);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--arc-lime);
  margin-bottom: 0.7rem;
  display: block;
}

.arc-step h3 {
  font-size: 1.2rem;
  color: #fff;
  margin: 0 0 0.6rem;
}

.arc-step p {
  margin: 0;
  line-height: 1.6;
  color: #b8c4bd;
}

/* ---------- Skills ---------- */

.arc-skills {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.9rem 1.6rem;
}

.arc-skill {
  display: flex;
  gap: 0.9rem;
  align-items: baseline;
  padding: 0.9rem 0;
  border-bottom: 1px solid rgba(20, 40, 30, 0.12);
}

[data-md-color-scheme="slate"] .arc-skill {
  border-bottom-color: rgba(255, 255, 255, 0.1);
}

.arc-skill__name {
  font-weight: 700;
  white-space: nowrap;
  color: var(--arc-ink);
}

[data-md-color-scheme="slate"] .arc-skill__name {
  color: #e7ede9;
}

.arc-skill__desc {
  color: var(--arc-ink-soft);
  line-height: 1.5;
}

[data-md-color-scheme="slate"] .arc-skill__desc {
  color: #b8c4bd;
}

/* ---------- CTA band ---------- */

.arc-cta {
  text-align: center;
}

.arc-cta h2 {
  margin-left: auto;
  margin-right: auto;
}

.arc-cta__cmd {
  display: inline-block;
  margin: 1.6rem 0 2rem;
  padding: 1rem 1.6rem;
  border-radius: 0.8rem;
  background: #0a1510;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.95rem;
  color: var(--arc-lime);
  text-align: left;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 10px 30px rgba(0, 0, 0, 0.35);
}

.arc-cta .md-button {
  padding: 0.85rem 1.7rem;
  font-size: 1rem;
  border-radius: 2rem;
  font-weight: 600;
}

.arc-cta .md-button--primary {
  background: var(--arc-lime);
  border-color: var(--arc-lime);
  color: var(--arc-pine-900);
}

.arc-cta .md-button--primary:hover {
  background: #b6f04a;
  border-color: #b6f04a;
  color: var(--arc-pine-900);
}

/* ---------- Disclaimer ---------- */

.arc-note {
  font-size: 0.9rem;
  color: var(--arc-ink-soft);
  max-width: 60ch;
  margin: 0 auto;
  line-height: 1.6;
}

[data-md-color-scheme="slate"] .arc-note {
  color: #8b9a92;
}

/* ---------- Responsive ---------- */

@media (max-width: 76.1875em) {
  .arc-hero {
    min-height: 82vh;
  }

  .arc-hero__inner {
    padding-top: 6rem;
  }
}

@media (max-width: 60em) {
  .arc-team,
  .arc-skills {
    grid-template-columns: 1fr;
  }

  .arc-flow {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .arc-section {
    padding: 3.5rem 0;
  }
}

@media (max-width: 44.9375em) {
  .arc-hero {
    min-height: 78vh;
    align-items: flex-end;
  }

  .arc-hero__inner {
    padding: 5rem 0 3rem;
  }

  .arc-hero__title {
    font-size: clamp(2rem, 9vw, 2.6rem);
  }

  .arc-hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .arc-hero .md-button {
    text-align: center;
  }
}