/* Custom properties/variables  */
:root {
  --washi: #f6f1e7;
  --ink: #1f1b16;
  --indigo: #263859;
  --vermillion: #c2483e;
  --gold: #b5934a;
  --slate: #3b3a36;
  --mist: #ece4d8;
  --shadow: rgba(20, 16, 12, 0.18);
    --nav-bg: rgba(246, 241, 231, 0.92);
    --section-contrast: rgba(38, 56, 89, 0.92);
  --card-bg: rgba(15, 18, 24, 0.55);
  --card-border: rgba(255, 255, 255, 0.16);
  --neon-blue: rgba(80, 170, 255, 0.85);
  --neon-red: rgba(240, 96, 110, 0.8);
  --footer-bg: #24324d;
  --footer-text: #f6f1e7;
    --hero-image: url('https://www.dropbox.com/scl/fi/iu0oalhihp6yeta6i74bm/foggy-shot-floating-torii-miyajima-japan-rain.jpg?rlkey=80lm9649hxwlt09ix9p73c3wc&st=iue5mlp9&dl=1');
    --section-image: url('https://images.unsplash.com/photo-1470770841072-f978cf4d019e?auto=format&fit=crop&w=3840&q=80');
    --contact-image: url('https://images.unsplash.com/photo-1469474968028-56623f02e42e?auto=format&fit=crop&w=3840&q=80');
    --hero-overlay: rgba(246, 241, 231, 0.92);
    --hero-overlay-2: rgba(236, 228, 216, 0.68);
    --section-overlay: rgba(38, 56, 89, 0.92);
    --section-overlay-2: rgba(38, 56, 89, 0.78);
    --contact-overlay: rgba(10, 12, 18, 0.5);
    --contact-overlay-2: rgba(10, 12, 18, 0.55);
    --texture-warm-1: rgba(197, 174, 126, 0.25);
    --texture-warm-2: rgba(198, 72, 62, 0.18);
    --texture-sheen-1: rgba(255, 255, 255, 0.35);
    --texture-sheen-2: rgba(236, 228, 216, 0.55);
    --sun-core: rgba(255, 232, 188, 0.95);
    --sun-glow: rgba(255, 194, 120, 0.35);
    --hero-text: #1f1b16;
    --hero-subtext: #3b3a36;
  }

  body[data-theme='dark'] {
    --washi: #141312;
    --ink: #f3eee4;
    --indigo: #b7c3e8;
    --vermillion: #d56055;
    --gold: #c8a969;
    --slate: #cbbfae;
    --mist: #1e1b18;
    --shadow: rgba(0, 0, 0, 0.4);
    --nav-bg: rgba(20, 19, 18, 0.9);
    --section-contrast: rgba(24, 29, 45, 0.95);
    --card-bg: rgba(15, 18, 24, 0.55);
    --card-border: rgba(255, 255, 255, 0.16);
    --footer-bg: #0f141f;
    --footer-text: #f5efe3;
    --hero-image: url('https://www.dropbox.com/scl/fi/40nf6fjmydw3buab8el69/cat-silhouette-overlooking-cityscape-night.jpg?rlkey=qazw27vjlcq9vyrmhtyu47xvp&st=46elqgsc&dl=1');
    --section-image: url('https://images.unsplash.com/photo-1472214103451-9374bd1c798e?auto=format&fit=crop&w=3840&q=80');
    --contact-image: url('https://images.unsplash.com/photo-1417021423914-070979c8eb34?auto=format&fit=crop&w=3840&q=80');
    --hero-overlay: rgba(20, 19, 18, 0.86);
    --hero-overlay-2: rgba(20, 19, 18, 0.5);
    --section-overlay: rgba(17, 20, 32, 0.88);
    --section-overlay-2: rgba(17, 20, 32, 0.72);
    --contact-overlay: rgba(10, 12, 18, 0.5);
    --contact-overlay-2: rgba(10, 12, 18, 0.55);
    --texture-warm-1: rgba(64, 78, 98, 0.28);
    --texture-warm-2: rgba(72, 98, 122, 0.2);
    --texture-sheen-1: rgba(14, 16, 20, 0.35);
    --texture-sheen-2: rgba(8, 10, 12, 0.55);
    --sun-core: rgba(216, 224, 240, 0.95);
    --sun-glow: rgba(110, 130, 175, 0.35);
    --hero-text: #f5efe3;
    --hero-subtext: #d6ccbb;
  }
  
  /* Base reset */
  * {
    margin: 0;
    padding: 0;
  }
  
  /* box-sizing and font sizing */
  *,
  *::before,
  *::after {
    box-sizing: inherit;
  }
  
  html {
    box-sizing: border-box;
  
    /* Set font size for easy rem calculations
     * default document font size = 16px, 1rem = 16px, 100% = 16px
     * (100% / 16px) * 10 = 62.5%, 1rem = 10px, 62.5% = 10px
    */
    font-size: 62.5%;
    scroll-behavior: smooth;
  }
  
  /* A few media query to set some font sizes at different screen sizes.
   * This helps automate a bit of responsiveness.
   * The trick is to use the rem unit for size values, margin and padding.
   * Because rem is relative to the document font size
   * when we scale up or down the font size on the document
   * it will affect all properties using rem units for the values.
  */
  
  /* I am using the em unit for breakpoints
   * The calculation is the following
   * screen size divided by browser base font size
   * As an example: a breakpoint at 980px
   * 980px / 16px = 61.25em
  */
  
  /* 1200px / 16px = 75em */
  @media (max-width: 75em) {
    html {
      font-size: 60%;
    }
  }
  
  /* 980px / 16px = 61.25em */
  @media (max-width: 61.25em) {
    html {
      font-size: 58%;
    }
  }
  
  /* 460px / 16px = 28.75em */
  @media (max-width: 28.75em) {
    html {
      font-size: 55%;
    }
  }
  
  /* Base styles */
  
  body {
    font-family: 'Zen Kaku Gothic New', sans-serif;
    font-size: 1.8rem; /* 18px */
    font-weight: 400;
    line-height: 1.4;
    color: var(--ink);
    background: var(--washi);
    position: relative;
    overflow-x: hidden;
  }

  body::before {
    content: "";
    position: fixed;
    inset: 0;
    background:
      radial-gradient(circle at 12% 18%, var(--texture-warm-1), transparent 55%),
      radial-gradient(circle at 80% 8%, var(--texture-warm-2), transparent 45%),
      linear-gradient(120deg, var(--texture-sheen-1), var(--texture-sheen-2));
    opacity: 0.9;
    z-index: -2;
  }

  body::after {
    content: "";
    position: fixed;
    inset: 0;
    background-image:
      repeating-linear-gradient(0deg, rgba(33, 26, 18, 0.03), rgba(33, 26, 18, 0.03) 1px, transparent 1px, transparent 6px),
      repeating-linear-gradient(90deg, rgba(33, 26, 18, 0.02), rgba(33, 26, 18, 0.02) 1px, transparent 1px, transparent 7px);
    mix-blend-mode: multiply;
    opacity: 0.6;
    z-index: -1;
    pointer-events: none;
  }
  
  h1,
  h2 {
    font-family: 'Shippori Mincho', serif;
    font-weight: 700;
    text-align: center;
    letter-spacing: 0.02em;
  }
  
  h1 {
    font-size: 6rem;
  }
  
  h2 {
    font-size: 4.2rem;
  }
  
  ul {
    list-style: none;
  }
  
  a {
    text-decoration: none;
    color: inherit;
  }
  
  img {
    display: block;
    width: 100%;
  }
  
  /* nav */
  
  .nav {
    display: flex;
    justify-content: flex-end;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--nav-bg);
    border-bottom: 1px solid rgba(31, 27, 22, 0.15);
    box-shadow: 0 10px 30px rgba(20, 16, 12, 0.08);
    backdrop-filter: blur(8px);
    z-index: 10;
  }
  
  .nav-list {
    display: flex;
    margin-right: 2rem;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.6rem;
  }
  
  @media (max-width: 28.75em) {
    .nav {
      justify-content: center;
    }
  
    .nav-list {
      margin: 0.6rem 1rem;
      justify-content: center;
    }
  }
  
  .nav-list a {
    display: block;
    font-size: 1.8rem;
    padding: 1.8rem 2.2rem;
    text-transform: uppercase;
    letter-spacing: 0.18em;
  }
  
  .nav-list a:hover {
    color: var(--vermillion);
  }

  .theme-toggle {
    position: relative;
    width: 4.8rem;
    height: 4.8rem;
    border: 1px solid rgba(31, 27, 22, 0.25);
    background: radial-gradient(circle at 30% 30%, #fff3c7, #f6b14c 55%, #d88a2c 100%);
    color: inherit;
    font-size: 1.3rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    padding: 0;
    margin: 0.8rem 0 0.8rem 1rem;
    border-radius: 50%;
    cursor: pointer;
    transition: background 0.3s ease, border-color 0.3s ease, color 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 0 18px rgba(255, 200, 120, 0.55);
    overflow: hidden;
  }

  @media (max-width: 48em) {
    .theme-toggle {
      width: 4.2rem;
      height: 4.2rem;
    }
  }

  .theme-toggle:hover {
    border-color: var(--vermillion);
    box-shadow: 0 0 22px rgba(255, 160, 110, 0.7);
  }

  .theme-toggle::before {
    content: "";
    position: absolute;
    top: 0.7rem;
    left: 1.2rem;
    width: 2.4rem;
    height: 2.4rem;
    border-radius: 50%;
    background: rgba(20, 19, 18, 0.85);
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
  }

  body[data-theme='dark'] .theme-toggle {
    background: radial-gradient(circle at 30% 30%, #f1f4ff, #c9d6f5 55%, #93a6d6 100%);
    border-color: rgba(243, 238, 228, 0.35);
    box-shadow: 0 0 18px rgba(115, 140, 200, 0.55);
  }

  body[data-theme='dark'] .theme-toggle::before {
    opacity: 1;
    background: var(--nav-bg);
    transform: translateX(0.6rem);
  }

  .theme-toggle::after {
    content: "";
    position: absolute;
    inset: -40% -40%;
    background: linear-gradient(120deg, transparent 45%, rgba(255, 255, 255, 0.85) 50%, transparent 55%);
    opacity: 0;
    transform: translateX(-120%) rotate(-8deg);
    filter: blur(1px);
    pointer-events: none;
  }

  .theme-toggle.is-slicing::after {
    opacity: 1;
    animation: button-slice 0.7s ease both;
  }

  @keyframes button-slice {
    0% {
      transform: translateX(-120%) rotate(-8deg);
    }
    55% {
      transform: translateX(10%) rotate(-8deg);
    }
    100% {
      transform: translateX(140%) rotate(-8deg);
    }
  }

  .theme-label {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
  }
  
/* Welcome section */

.welcome-section {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100vh;
  text-align: center;
  padding: 0 2rem;
  position: relative;
  overflow: hidden;
  background-image:
    linear-gradient(180deg, var(--hero-overlay) 0%, var(--hero-overlay-2) 58%, rgba(20, 19, 18, 0) 100%),
    var(--hero-image);
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
}

.hero-sun {
  position: absolute;
  top: 12vh;
  left: 50%;
  width: 220px;
  height: 220px;
  transform: translateX(-50%);
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, var(--sun-core), var(--sun-glow) 55%, rgba(255, 255, 255, 0) 70%);
  box-shadow: 0 30px 80px var(--sun-glow);
  z-index: 0;
}

@media (max-width: 48em) {
  .hero-sun {
    width: 180px;
    height: 180px;
    top: 10vh;
  }
}

@media (max-width: 30em) {
  .hero-sun {
    width: 150px;
    height: 150px;
    top: 8vh;
  }
}

.welcome-section h1,
.welcome-section .subtitle,
.welcome-section .ink-divider {
  position: relative;
  z-index: 1;
}

.welcome-section h1 {
  font-size: clamp(3.6rem, 5vw, 6.4rem);
  color: var(--hero-text);
  text-shadow: 0 6px 14px rgba(8, 10, 14, 0.55);
  font-weight: 700;
}

.ink-divider {
  width: 120px;
  height: 2px;
  margin: 2rem 0 1.6rem;
  background: linear-gradient(90deg, transparent, var(--vermillion), transparent);
}

.welcome-section .subtitle {
  font-size: 3rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--hero-subtext);
  text-shadow: 0 6px 14px rgba(12, 10, 8, 0.35);
  font-family: 'Inter', 'Zen Kaku Gothic New', sans-serif;
}

@media (max-width: 48em) {
  .welcome-section h1 {
    font-size: clamp(3.2rem, 8vw, 5.2rem);
  }

  .welcome-section .subtitle {
    font-size: 2.2rem;
    letter-spacing: 0.16em;
  }
}

@media (max-width: 30em) {
  .welcome-section {
    padding-top: 6rem;
  }

  .welcome-section .subtitle {
    font-size: 1.8rem;
  }
}

  /* Projects section */
  
  .projects-section {
    text-align: center;
    padding: 10rem 2rem;
    background-color: #11131a;
    background-image:
      linear-gradient(180deg, rgba(12, 14, 20, 0.92), rgba(12, 14, 20, 0.88)),
      repeating-linear-gradient(60deg, rgba(255, 255, 255, 0.04) 0 1px, transparent 1px 30px),
      repeating-linear-gradient(120deg, rgba(255, 255, 255, 0.04) 0 1px, transparent 1px 30px);
    background-size: cover;
    background-position: center;
    color: #f3efe6;
  }
  
  .projects-section-header {
    max-width: 640px;
    margin: 0 auto 6rem auto;
    border-bottom: 1px solid rgba(246, 241, 231, 0.55);
    padding: 2.2rem 2rem 2.6rem;
    border-radius: 16px;
    background: rgba(246, 241, 231, 0.08);
    text-shadow: 0 12px 24px rgba(10, 12, 18, 0.6);
    color: #f3efe6;
    backdrop-filter: blur(6px);
  }

  body[data-theme='dark'] .projects-section-header {
    background: rgba(10, 12, 18, 0.62);
    border-bottom-color: rgba(246, 241, 231, 0.7);
    text-shadow: 0 12px 26px rgba(0, 0, 0, 0.75);
  }
  
  @media (max-width: 28.75em) {
    .projects-section-header {
      font-size: 4rem;
    }
  }
  
  /* "Automagic" image grid using no media queries */
  .projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    grid-gap: 4rem;
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    margin-bottom: 6rem;
  }
  
  @media (max-width: 30.625em) {
    .projects-section {
      padding: 6rem 1rem;
    }
  
    .projects-grid {
      grid-template-columns: 1fr;
    }
  }

  @media (max-width: 40em) {
    .projects-grid {
      grid-gap: 2.4rem;
    }

    .project-image {
      height: 200px;
    }
  }
  
  .project {
    background: var(--card-bg);
    color: #f3efe6;
    box-shadow: 0 18px 40px rgba(12, 10, 8, 0.28);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--card-border);
    backdrop-filter: blur(12px);
  }
  
  .code {
    color: rgba(243, 239, 230, 0.65);
    transition: color 0.3s ease-out;
  }
  
  .project:hover .code {
    color: var(--vermillion);
  }
  
  .project-image {
    height: 220px;
    width: 100%;
    object-fit: cover;
    filter: saturate(0.9) contrast(1.05);
  }
  
  .project-title {
    font-size: 2rem;
    padding: 2.4rem 2rem;
    font-family: 'Shippori Mincho', serif;
    color: #f3efe6;
  }
  
  .btn {
    display: inline-block;
    padding: 1.2rem 2.4rem;
    border-radius: 999px;
    border: 1px solid transparent;
  }
/* Adjust the margin and text alignment for the "Show All" button */
.btn-show-all {
  margin-top: 2rem;
  font-size: 1.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: rgba(246, 241, 231, 0.12);
  border-color: rgba(246, 241, 231, 0.5);
  color: var(--washi);
}
  .btn-show-all:hover {
    background: var(--vermillion);
    border-color: var(--vermillion);
  }
  
  .btn-show-all:hover > i {
    transform: translateX(2px);
  }
  
  .btn-show-all > i {
    margin-left: 10px;
    transform: translateX(0);
    transition: transform 0.3s ease-out;
  }
  
  /* Contact section */
  
  .contact-section {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    width: 100%;
    height: 80vh;
    padding: 0 2rem;
    background-image:
      linear-gradient(180deg, var(--contact-overlay), var(--contact-overlay-2)),
      var(--contact-image);
    background-size: cover;
    background-position: center;
  }

  @media (max-width: 48em) {
    .contact-section {
      height: auto;
      padding: 6rem 2rem;
    }
  }
  
  .contact-section-header > h2 {
    font-size: 6rem;
    text-shadow: 0 8px 18px rgba(10, 10, 10, 0.25);
  }
  
  @media (max-width: 28.75em) {
    .contact-section-header > h2 {
      font-size: 4rem;
    }
  }
  
  .contact-section-header > p {
    color: var(--slate);
    letter-spacing: 0.08em;
  }
  
  .contact-links {
    display: flex;
    justify-content: center;
    width: 100%;
    max-width: 980px;
    margin-top: 4rem;
    flex-wrap: wrap;
    gap: 1.2rem;
  }
  
  .contact-details {
    font-size: 2.4rem;
    text-shadow: none;
    transition: transform 0.3s ease-out;
    padding: 1.2rem 2.2rem;
    border: 1px solid rgba(243, 239, 230, 0.3);
    border-radius: 999px;
    margin: 0.8rem;
    color: #f3efe6;
    background: rgba(15, 18, 24, 0.45);
  }

  @media (max-width: 40em) {
    .contact-details {
      font-size: 2rem;
      padding: 1rem 1.8rem;
    }
  }
  
  .contact-details:hover {
    transform: translateY(8px);
    background: rgba(15, 18, 24, 0.7);
    box-shadow: 0 0 18px var(--neon-blue), 0 0 30px var(--neon-red);
  }
  
  /* Footer */
  
  footer {
    font-weight: 300;
    display: flex;
    justify-content: space-evenly;
    padding: 2rem;
    background: var(--footer-bg);
    color: var(--footer-text);
    border-top: 2px solid rgba(246, 241, 231, 0.22);
  }

  footer a {
    color: inherit;
  }

  
  footer > p {
    margin: 2rem;
  }
  
  footer i {
    vertical-align: middle;
  }
  
  @media (max-width: 28.75em) {
    footer {
      flex-direction: column;
      text-align: center;
    }
  }