/* 
 * Font Configuration
 * To change fonts, update ONLY the file paths in @font-face src declarations below
 * and the font-family names in the --font-regular and --font-bold tokens
 */

/* Regular font (Supreme) */
@font-face {
  font-family: "Supreme";
  src: url("font/Supreme-Variable.ttf") format("truetype");
  font-weight: 100 900;
  font-style: normal;
}

@font-face {
  font-family: "Supreme";
  src: url("font/Supreme-VariableItalic.ttf") format("truetype");
  font-weight: 100 900;
  font-style: italic;
}

/* Bold font (BespokeStencil) */
@font-face {
  font-family: "BespokeStencil";
  src: url("font/BespokeStencil-Variable.ttf") format("truetype");
  font-weight: 100 900;
  font-style: normal;
}

@font-face {
  font-family: "BespokeStencil";
  src: url("font/BespokeStencil-VariableItalic.ttf") format("truetype");
  font-weight: 100 900;
  font-style: italic;
}

:root {
  color-scheme: dark light;

  --font-regular: "Supreme", sans-serif;
  --font-bold: "BespokeStencil", sans-serif;

  --foreground: #e4c58a;
  --background: #1f1a19;
  --primary: #2f4a3d;
  --surface: #181312;

  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.5rem;
  --text-xl: 2rem;
  --text-2xl: 2.5rem;
  --text-3xl: 3rem;
  --text-4xl: 3.5rem;
  --text-5xl: 4rem;
}

:root:has(#light-mode-toggle:checked) {
  --foreground: #8b6b3e;
  --background: #eee9e0;
  --primary: #6f8573;
  --surface: #f5f5f5;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--background);
  color: var(--foreground);
  font-family: var(--font-regular);
  min-height: 100vh;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  padding: 1rem 2rem;
  background-color: var(--primary);
  color: var(--foreground);
  text-decoration: none;
  border-radius: 0.5rem;
  font-weight: bold;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 1rem;
}

button {
  background-color: var(--primary);
}

#background-canvas {
  z-index: -1;
  position: absolute;
  display: block;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
}

#hero-effects-canvas {
  z-index: 50;
  position: fixed;
  display: block;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  pointer-events: none;
}

#light-mode-toggle {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

header {
  min-height: 100vh;
}

#main-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 100vh;
  z-index: 100;
  display: flex;
  justify-content: center;
  align-items: center;
  pointer-events: none;
  transition: padding-top 0.3s ease-out;
}

#main-nav::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(
    to bottom,
    var(--background) 0%,
    var(--background) 50%,
    transparent 100%
  );
  opacity: var(--nav-bg-opacity, 0);
  transition: opacity 0.1s ease-out;
  pointer-events: none;
  z-index: -1;
}

#main-nav label {
  position: fixed;
  top: 1.5rem;
  right: 2rem;
  cursor: pointer;
  font-size: 1.5rem;
  pointer-events: auto;
  z-index: 200;
}

.nav-items {
  display: flex;
  gap: 2rem;
  font-family: var(--font-bold);
  font-weight: bold;
  transition:
    gap 0.1s ease-out,
    transform 0.1s ease-out;
  transform-origin: center center;
  --cam-font-size: clamp(8rem, 20vw, 15rem);
  --cam-letter-spacing: 0.5em;
}

.nav-letter {
  position: relative;
  display: inline-flex;
  align-items: center;
  color: var(--foreground);
  text-decoration: none;
  letter-spacing: 0;
}

.nav-letter:focus-visible {
  outline: 2px solid var(--foreground);
  outline-offset: 4px;
}

.letter-base {
  display: block;
  white-space: nowrap;
  font-size: var(--cam-font-size);
}

.letter-suffix {
  width: 0;
  display: inline-block;
  white-space: nowrap;
  font-size: 1.5rem;
  opacity: 0;
  transform: translateX(-0.5rem);
  transition:
    opacity 0.2s ease-out,
    transform 0.2s ease-out;
  pointer-events: none;
}

.nav-letter:hover .letter-suffix,
.nav-letter:focus .letter-suffix {
  opacity: 0.8;
}

.period {
  font-family: var(--font-bold);
  font-size: var(--cam-font-size);
  font-weight: bold;
  letter-spacing: var(--cam-letter-spacing);
  transition: opacity 0.2s ease-out;
}

main {
  position: relative;
  z-index: 1;
  background-color: transparent;
}

.content-section {
  padding: 4rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.content-section h2 {
  font-family: var(--font-bold);
  font-size: 3rem;
  margin-bottom: 2rem;
}

.content-section article {
  font-size: 1.2rem;
  line-height: 1.8;
}

.content-section article p {
  margin-bottom: 1.5rem;
}

/* Split-flap board (train station style) */
.tech-board {
  --columns: 20;
  --card-width: 40px;
  --card-height: 56px;
  --flip-duration: 150ms;
  --card-bg: var(--surface);
  --card-border: rgba(228, 197, 138, 0.2);
  --card-text: var(--foreground);
  --card-divider: rgba(0, 0, 0, 0.4);

  display: grid;
  grid-template-columns: repeat(var(--columns), var(--card-width));
  gap: 3px;
  justify-content: center;
  margin-top: 2rem;
  padding: 1.5rem;
  overflow-x: hidden;
  max-width: 100%;
  box-sizing: border-box;
}

.flip-card {
  position: relative;
  width: var(--card-width);
  height: var(--card-height);
  perspective: 200px;
  font-family: var(--font-bold);
  font-size: 1.5rem;
  font-weight: bold;
  text-transform: uppercase;
  color: var(--foreground);
}

.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
}

/* Top and bottom halves showing current character */
.flip-card-top,
.flip-card-bottom {
  position: absolute;
  left: 0;
  right: 0;
  height: 50%;
  background: var(--card-bg);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--card-border);
}

.flip-card-top {
  top: 0;
  border-radius: 4px 4px 0 0;
  border-bottom: none;
}

/* Full-height character strip: top half shows top of letter */
.flip-card-top span {
  position: absolute;
  left: 50%;
  top: 0;
  width: 100%;
  height: 200%;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: translateX(-50%);
  color: var(--card-text);
  line-height: 1;
}

.flip-card-bottom {
  bottom: 0;
  border-radius: 0 0 4px 4px;
  border-top: 1px solid var(--card-divider);
}

/* Full-height character strip: bottom half shows bottom of letter */
.flip-card-bottom span {
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 100%;
  height: 200%;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: translateX(-50%);
  color: var(--card-text);
  line-height: 1;
}

/* Flap elements for animation */
.flip-card-flap-top,
.flip-card-flap-bottom {
  position: absolute;
  left: 0;
  right: 0;
  height: 50%;
  background: var(--card-bg);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--card-border);
  backface-visibility: hidden;
  transform-style: preserve-3d;
  opacity: 0;
  pointer-events: none;
}

.flip-card-flap-top {
  top: 0;
  border-radius: 4px 4px 0 0;
  border-bottom: none;
  transform-origin: bottom center;
}

.flip-card-flap-top span {
  position: absolute;
  left: 50%;
  top: 0;
  width: 100%;
  height: 200%;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: translateX(-50%);
  color: var(--card-text);
  line-height: 1;
}

.flip-card-flap-bottom {
  bottom: 0;
  border-radius: 0 0 4px 4px;
  border-top: 1px solid var(--card-divider);
  transform-origin: top center;
  transform: rotateX(90deg);
}

.flip-card-flap-bottom span {
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 100%;
  height: 200%;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: translateX(-50%);
  color: var(--card-text);
  line-height: 1;
}

/* Flipping animation */
.flip-card-inner.flipping .flip-card-flap-top {
  opacity: 1;
  animation: flipTop var(--flip-duration) ease-in forwards;
}

.flip-card-inner.flipping .flip-card-flap-bottom {
  opacity: 1;
  animation: flipBottom var(--flip-duration) ease-out forwards;
  animation-delay: calc(var(--flip-duration) * 0.5);
}

@keyframes flipTop {
  0% {
    transform: rotateX(0deg);
  }
  100% {
    transform: rotateX(-90deg);
  }
}

@keyframes flipBottom {
  0% {
    transform: rotateX(90deg);
  }
  100% {
    transform: rotateX(0deg);
  }
}

/* Light mode adjustments */
:root:has(#light-mode-toggle:checked) .tech-board {
  --card-border: rgba(139, 107, 62, 0.3);
  --card-divider: rgba(0, 0, 0, 0.2);
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  #main-nav,
  #main-nav::before,
  .nav-items,
  .nav-letter,
  .letter-base,
  .letter-suffix,
  .period,
  .flip-card-inner,
  .flip-card-flap-top,
  .flip-card-flap-bottom {
    transition: none !important;
    animation: none !important;
  }
}

.card {
  background-color: var(--surface);
  /* padding: 1rem; */
  border-radius: 0.5rem;
  box-shadow: var(--shadow);
}

.card-terminal {
  width: 100%;
  opacity: 0.7;
  height: 260px;
  overflow-y: scroll;
  overflow-x: hidden;
  white-space: wrap;
  scrollbar-color: var(--foreground) var(--primary);
}

.card-terminal-container > h2 {
  padding-left: 1rem;
  width: 100%;
  font-family: var(--font-regular);
  font-size: 1.5rem;
  border-bottom: 1px solid var(--foreground);
}

.card-terminal {
  padding: 1rem;
  width: 100%;
}

.card-terminal > p {
  font-family: var(--font-regular);
  margin: 0;
  padding: 0;
  line-height: 0.5;
}

.card-terminal-path {
  color: var(--primary);
}

footer {
  margin-bottom: 2rem;
}

.social-links {
  display: flex;
  width: 100%;
  justify-content: center;
  align-items: center;
  gap: 1rem;
}

.social-link {
  width: 50px;
  height: 50px;
}

.social-link > img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}