/* fonts */
@font-face {
  font-family: "Futura-Light";
  src:
    url("fonts/Futura-Light.399338436df9.woff2") format("woff2"),
    url("fonts/Futura-Light.79a02cffa256.woff") format("woff"),
    url("fonts/Futura-Light.dd3c8d1bb9b0.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
}

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

* {
  margin: 0;
  padding: 0;
}

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

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

:root {
  scrollbar-gutter: stable;
  interpolate-size: allow-keywords;
}

body {
  font-family:
    "Futura-Light", ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji",
    "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
}

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

/* @link https://utopia.fyi/type/calculator?c=360,16,1.125,1240,18,1.2,5,2,&s=0.75|0.5|0.25,1.5|2|3|4|6,s-l&g=s,l,xl,12 */
:root {
  --step--2: clamp(0.7813rem, 0.7938rem + -0.0161vw, 0.7901rem);
  --step--1: clamp(0.8889rem, 0.869rem + 0.0884vw, 0.9375rem);
  --step-0: clamp(1rem, 0.9489rem + 0.2273vw, 1.125rem);
  --step-1: clamp(1.125rem, 1.033rem + 0.4091vw, 1.35rem);
  --step-2: clamp(1.2656rem, 1.1207rem + 0.6443vw, 1.62rem);
  --step-3: clamp(1.4238rem, 1.211rem + 0.9458vw, 1.944rem);
  --step-4: clamp(1.6018rem, 1.3028rem + 1.3291vw, 2.3328rem);
  --step-5: clamp(1.802rem, 1.394rem + 1.8133vw, 2.7994rem);
}

/* @link https://utopia.fyi/space/calculator?c=360,16,1.125,1240,18,1.2,5,2,&s=0.75|0.5|0.25,1.5|2|3|4|6,s-l&g=s,l,xl,12 */
:root {
  --space-3xs: clamp(0.25rem, 0.2244rem + 0.1136vw, 0.3125rem);
  --space-2xs: clamp(0.5rem, 0.4744rem + 0.1136vw, 0.5625rem);
  --space-xs: clamp(0.75rem, 0.6989rem + 0.2273vw, 0.875rem);
  --space-s: clamp(1rem, 0.9489rem + 0.2273vw, 1.125rem);
  --space-m: clamp(1.5rem, 1.4233rem + 0.3409vw, 1.6875rem);
  --space-l: clamp(2rem, 1.8977rem + 0.4545vw, 2.25rem);
  --space-xl: clamp(3rem, 2.8466rem + 0.6818vw, 3.375rem);
  --space-2xl: clamp(4rem, 3.7955rem + 0.9091vw, 4.5rem);
  --space-3xl: clamp(6rem, 5.6932rem + 1.3636vw, 6.75rem);

  /* One-up pairs */
  --space-3xs-2xs: clamp(0.25rem, 0.1222rem + 0.5682vw, 0.5625rem);
  --space-2xs-xs: clamp(0.5rem, 0.3466rem + 0.6818vw, 0.875rem);
  --space-xs-s: clamp(0.75rem, 0.5966rem + 0.6818vw, 1.125rem);
  --space-s-m: clamp(1rem, 0.7188rem + 1.25vw, 1.6875rem);
  --space-m-l: clamp(1.5rem, 1.1932rem + 1.3636vw, 2.25rem);
  --space-l-xl: clamp(2rem, 1.4375rem + 2.5vw, 3.375rem);
  --space-xl-2xl: clamp(3rem, 2.3864rem + 2.7273vw, 4.5rem);
  --space-2xl-3xl: clamp(4rem, 2.875rem + 5vw, 6.75rem);

  /* Custom pairs */
  --space-s-l: clamp(1rem, 0.4886rem + 2.2727vw, 2.25rem);
}

/* color scheme */
:root {
  --color-black: #111111;
  --color-white: #ffffff;

  /* goes from dark to bright */
  --color-text-1: var(--color-black);
  --color-text-2: color-mix(in oklab, var(--color-black) 40%, black);
  --color-text-3: color-mix(in oklab, var(--color-black), white);

  /* goes from bright to dark */
  --color-surface-1: var(--color-white);
  --color-surface-2: color-mix(in oklab, var(--color-white) 20%, white);
  --color-surface-3: color-mix(in oklab, var(--color-white) 15%, white);
  --color-surface-4: color-mix(in oklab, var(--color-white) 5%, white);

  /* standard size */
  --std-width: 960px;
}

/* shadows */
:root {
  /* https://smoothshadows.com/#djEsMiw1LDAuMSw0LDQsMiwjMDMwNzEyLCNmM2Y0ZjYsI2ZmZmZmZiwy */
  --shadow-sharp-2:
    0px 0px 0px rgba(3, 7, 18, 0.10),
    0px 1px 1px rgba(3, 7, 18, 0.08),
    1px 1px 1px rgba(3, 7, 18, 0.06),
    1px 3px 3px rgba(3, 7, 18, 0.04),
    2px 4px 4px rgba(3, 7, 18, 0.02);
  /* https://smoothshadows.com/#djEsMiw1LDAuMSwxNiwxNiw4LCMwMzA3MTIsI2YzZjRmNiwjZmZmZmZmLDI%3D */
  --shadow-sharp-8:
    0px 1px 1px rgba(3, 7, 18, 0.10),
    1px 3px 3px rgba(3, 7, 18, 0.08),
    3px 6px 6px rgba(3, 7, 18, 0.06),
    5px 10px 10px rgba(3, 7, 18, 0.04),
    8px 16px 16px rgba(3, 7, 18, 0.02);
}

body {
  font-size: var(--step-0);
  background-color: var(--color-surface-1);
  color: var(--color-text-1);
}

.std {
  max-width: var(--std-width);
  margin-inline: auto;
  padding-inline: var(--space-m);
}

.prose > * + * {
  margin-block-start: var(--prose-flow, 1em);
  line-height: 1.5;
}

.btn {
  --color-bg: var(--color-black);
  --color-fg: var(--color-white);
  --color-shadow: oklab(1 0 0 / 0.4);
  --color-border: color-mix(in oklab, black 20%, var(--color-bg));
  --color-focus-bg: color-mix(in oklab, var(--color-bg) 60%, white);
  --color-focus-fg: color-mix(in oklab, black, var(--color-focus-bg));
  --color-focus-shadow: color-mix(in oklab, white, var(--color-focus-bg));
  --color-active-bg: color-mix(in oklab, var(--color-bg) 30%, white);
  --color-active-fg: color-mix(in oklab, black, var(--color-active-bg));

  display: inline-flex;
  gap: var(--space-s);
  align-items: center;
  background-color: var(--color-bg);
  color: var(--color-fg);
  border: 1px solid var(--color-border);
  border-radius: var(--space-3xs);
  box-shadow: var(--color-shadow) 0 1px 0 0 inset;
  cursor: pointer;
  font-size: inherit;
  font-weight: bold;
  text-transform: uppercase;
  word-spacing: 0.3em;
  line-height: 1cap;
  padding: var(--space-2xs) var(--space-xs);
  touch-action: manipulation;
  vertical-align: middle;

  &:hover,
  &:focus {
    background-color: var(--color-focus-bg);
    color: var(--color-focus-fg);
  }

  &:focus {
    box-shadow: 0 0 0 0.4cap var(--color-focus-shadow);
  }

  &:active {
    background-color: var(--color-active-bg);
    color: var(--color-active-fg);
    box-shadow: none;
  }

  &.secondary {
    --color-bg: var(--color-white);
    --color-fg: var(--color-black);
  }
}

.alert {
  --color-bg: var(--color-ash);
  --color-fg: color-mix(in oklab, black, var(--color-bg));
  --color-shadow: oklab(1 0 0 / 0.4);
  --color-border: color-mix(in oklab, black 20%, var(--color-bg));

  border: 1px solid transparent;
  margin-block: var(--space-xs);
  padding: var(--space-xs);
  border-radius: var(--space-3xs);

  background-color: var(--color-bg);
  color: var(--color-fg);
  border-color: var(--color-border);

  &.error {
    --color-bg: color-mix(in oklab, white 60%, var(--color-coral));
  }
  &.success {
    --color-bg: color-mix(in oklab, white 60%, var(--color-lemon));
  }

  button[aria-label="Close"] {
    background: none;
    border: none;
    float: right;
    padding-inline: var(--space-2xs);
    cursor: pointer;

    &:hover {
      background-color: var(--color-ash);
    }
  }
}

.site-nav, .site-footer {
  .items {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-xs) var(--space-m);
  }

  a {
    color: currentColor;
    text-decoration: none;
    &:hover {
      text-decoration: underline;
    }
  }

  .logo img {
    max-height: 50px;
  }

  small {
    font-size: var(--step--2);
  }

  .menu {
    display: flex;
    flex-direction: row;
    list-style-type: none;
    gap: var(--space-m);
    align-items: center;

    li {
      transition: transform 0.2s ease, box-shadow 0.2s ease;
      &:hover {
        transform: translateY(-4px);
      }
    }

    img {
      height: 24px;
    }
  }
}

.site-nav {
  position: sticky;
  top: 0;
  background-color: #ffffff;
}

.site-footer {
  border-top: 1px solid var(--color-black);

  @media (max-width: 960px) {
    .items {
      flex-direction: column;
      gap: var(--space-m);
    }
  }
}

#go-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.2s ease;
  z-index: 999;

  &.visible {
    opacity: 1;
    pointer-events: auto;
  }
  &:hover {
    transform: translateY(-3px);
  }
  &:active {
    transform: scale(0.94);
  }
}

.banner {
  background-color: #212529; /* also meta theme-color */
  color: #ffffff;
  padding: var(--space-xs);
  overflow: hidden;
  white-space: nowrap;
  font-size: var(--step--1);

  span {
    margin-right: var(--space-3xl);
  }
}

.hero {
  .items {
    display: flex;
    flex-direction: row-reverse;
    align-items: center;
    padding-block: var(--space-m);

    & > * {
      flex: 1 1 50%;
      min-width: 0;
    }

    @media (max-width: 960px) {
      flex-direction: column;
      & > * {
        margin-top: var(--space-m);
      }
    }
  }

  h1 {
    margin-bottom: var(--space-m);
    font-weight: 500;
  }

  &.gold {
    --bg-color: #fcfbf9;
    --text-color: #4a4036;
    --accent-gold: #c5a47e;
    --light-bg: #f7f5f2;
    --quote-gradient-start: #8a7658;
    --quote-gradient-end: #d3c195;

    background-color: var(--bg-color);

    .founder {
      background-color: var(--light-bg);
      border-left: 4px solid var(--accent-gold);
      padding: var(--space-s) var(--space-s);
      margin-bottom: var(--space-l);

      h2 {
        font-weight: 500;
        color: var(--text-color);
        margin-bottom: var(--space-3xs);
      }

      p {
        font-size: var(--step--1);
      }
    }

    blockquote {
      margin-left: var(--space-m);
      display: flex;
      justify-content: center;
      align-items: center;
      background: linear-gradient(
        135deg,
        var(--quote-gradient-start) 0%,
        var(--quote-gradient-end) 100%
      );
      border: 1px solid rgba(255, 255, 255, 0.3);
      border-radius: 6px;
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
      font-size: var(--step-2);
      font-weight: 800;
      font-family: "Franklin Gothic Medium", "Arial Narrow", Arial, sans-serif;
      line-height: 1.2;
      text-align: center;
      color: var(--color-white);

      div {
        padding: var(--space-m);
        margin: var(--space-m);
        border: 1px solid var(--bg-color);
        border-radius: 2px;
      }

      @media (max-width: 960px) {
        margin-top: 0;
        margin-left: 0;
      }
    }
  }
}

.philosophy {
  padding-block: var(--space-m);
  text-align: center;

  h1 {
    font-weight: 500;
  }

  & > p {
    margin-bottom: var(--space-s);
    font-size: var(--step--1);
  }

  .items {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(25ch, 1fr));
    justify-content: center;
    gap: var(--space-s);

    & > * {
      background-color: #faf8f5;
      border: 1px solid #eee;
      padding: var(--space-xl) var(--space-xs);
      margin-block-start: var(--prose-flow, 1em);
      line-height: 1.5;
    }

    .icon {
      font-size: var(--step--2);
      color: #c9a567;
    }
  }
}