/* ==========================================================================
   Comma — portfolio styles
   Material 3 Expressive: bold color, expressive shapes, springy motion.
   ========================================================================== */

@font-face {
  font-display: swap;
}

:root {
  color-scheme: light dark;

  /* ---- Material 3 Expressive tonal palette (seed: green, matching the avatar) ---- */
  --md-primary: #3b6939;
  --md-on-primary: #ffffff;
  --md-primary-container: #bcf0b4;
  --md-on-primary-container: #002106;

  --md-secondary: #53634f;
  --md-secondary-container: #d6e8cf;
  --md-on-secondary-container: #101f0f;

  --md-tertiary: #386569;
  --md-tertiary-container: #bcebf0;
  --md-on-tertiary-container: #002022;

  --md-error: #ba1a1a;
  --md-error-container: #ffdad6;
  --md-on-error-container: #410002;

  --md-surface: #f7fbf1;
  --md-surface-dim: #d7dbd0;
  --md-surface-bright: #f7fbf1;
  --md-surface-container-low: #f1f5ec;
  --md-surface-container: #ecf1e6;
  --md-surface-container-high: #e6ebe0;
  --md-on-surface: #191d17;
  --md-on-surface-variant: #424940;
  --md-outline: #72796f;
  --md-outline-variant: #c2c9bb;

  --shape-xs: 10px;
  --shape-sm: 16px;
  --shape-md: 20px;
  --shape-lg: 28px;
  --shape-xl: 40px;
  --shape-full: 999px;

  --ease-expressive: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-standard: cubic-bezier(0.2, 0, 0, 1);

  --font-display: "Google Sans", "Roboto", system-ui, sans-serif;
  --font-body: "Google Sans Text", "Roboto", system-ui, sans-serif;
}

:root[data-theme="dark"] {
  --md-primary: #a1d398;
  --md-on-primary: #0c3910;
  --md-primary-container: #235024;
  --md-on-primary-container: #bcf0b4;

  --md-secondary: #bbccb4;
  --md-secondary-container: #3b4b38;
  --md-on-secondary-container: #d6e8cf;

  --md-tertiary: #a0cfd4;
  --md-tertiary-container: #1e4d51;
  --md-on-tertiary-container: #bcebf0;

  --md-error: #ffb4ab;
  --md-error-container: #93000a;
  --md-on-error-container: #ffdad6;

  --md-surface: #10140f;
  --md-surface-dim: #10140f;
  --md-surface-bright: #363a34;
  --md-surface-container-low: #191d17;
  --md-surface-container: #1d211b;
  --md-surface-container-high: #272b25;
  --md-on-surface: #e1e4da;
  --md-on-surface-variant: #c2c9bb;
  --md-outline: #8c9388;
  --md-outline-variant: #424940;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --md-primary: #a1d398;
    --md-on-primary: #0c3910;
    --md-primary-container: #235024;
    --md-on-primary-container: #bcf0b4;

    --md-secondary: #bbccb4;
    --md-secondary-container: #3b4b38;
    --md-on-secondary-container: #d6e8cf;

    --md-tertiary: #a0cfd4;
    --md-tertiary-container: #1e4d51;
    --md-on-tertiary-container: #bcebf0;

    --md-error: #ffb4ab;
    --md-error-container: #93000a;
    --md-on-error-container: #ffdad6;

    --md-surface: #10140f;
    --md-surface-dim: #10140f;
    --md-surface-bright: #363a34;
    --md-surface-container-low: #191d17;
    --md-surface-container: #1d211b;
    --md-surface-container-high: #272b25;
    --md-on-surface: #e1e4da;
    --md-on-surface-variant: #c2c9bb;
    --md-outline: #8c9388;
    --md-outline-variant: #424940;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--md-surface);
  color: var(--md-on-surface);
  font-family: var(--font-body);
  line-height: 1.5;
  transition: background-color 0.4s var(--ease-standard), color 0.4s var(--ease-standard);
}

a {
  color: var(--md-primary);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  padding: 12px 20px;
  border-radius: var(--shape-sm);
  z-index: 1000;
}
.skip-link:focus {
  left: 12px;
  top: 12px;
}

/* ---------------------------------- Top bar ---------------------------------- */

.top-bar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--md-surface) 85%, transparent);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--md-outline-variant);
}

.top-bar__inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  text-decoration: none;
  color: var(--md-primary);
  letter-spacing: -0.02em;
}

.top-nav {
  display: flex;
  gap: 4px;
  margin-left: 8px;
  flex: 1;
}

.top-nav a {
  text-decoration: none;
  color: var(--md-on-surface-variant);
  font-weight: 500;
  padding: 10px 16px;
  border-radius: var(--shape-full);
  transition: background-color 0.25s var(--ease-standard), color 0.25s var(--ease-standard);
  white-space: nowrap;
}

.top-nav a:hover,
.top-nav a:focus-visible {
  background: var(--md-secondary-container);
  color: var(--md-on-secondary-container);
}

.top-nav a.active,
.top-nav a.active:hover,
.top-nav a.active:focus-visible {
  background: var(--md-primary);
  color: var(--md-on-primary);
}

.top-bar__controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lang-switch {
  display: flex;
  background: var(--md-surface-container);
  border-radius: var(--shape-full);
  padding: 4px;
  gap: 2px;
}

.lang-chip {
  border: none;
  background: transparent;
  color: var(--md-on-surface-variant);
  font-weight: 600;
  font-size: 0.75rem;
  letter-spacing: 0.02em;
  padding: 7px 12px;
  border-radius: var(--shape-full);
  cursor: pointer;
  transition: background-color 0.3s var(--ease-expressive), color 0.3s var(--ease-standard), transform 0.3s var(--ease-expressive);
}

.lang-chip:hover {
  background: var(--md-surface-container-high);
}

.lang-chip[aria-pressed="true"] {
  background: var(--md-primary);
  color: var(--md-on-primary);
  transform: scale(1.05);
}

.icon-btn {
  border: none;
  background: var(--md-surface-container);
  color: var(--md-on-surface);
  width: 42px;
  height: 42px;
  border-radius: var(--shape-full);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: background-color 0.25s var(--ease-standard), transform 0.4s var(--ease-expressive);
}

.icon-btn:hover {
  background: var(--md-surface-container-high);
  transform: rotate(-8deg);
}

.icon {
  width: 22px;
  height: 22px;
  fill: currentColor;
}

.icon-moon {
  display: none;
}

:root[data-theme="dark"] .icon-sun {
  display: none;
}
:root[data-theme="dark"] .icon-moon {
  display: block;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .icon-sun {
    display: none;
  }
  :root:not([data-theme="light"]) .icon-moon {
    display: block;
  }
}

/* ---------------------------------- Layout ---------------------------------- */

.section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 88px 20px;
}

.headline {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  letter-spacing: -0.01em;
  margin: 0 0 8px;
}

.section-subtitle {
  color: var(--md-on-surface-variant);
  font-size: 1.05rem;
  margin: 0 0 40px;
  max-width: 60ch;
}

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

.hero {
  position: relative;
  overflow: hidden;
  padding: 120px 20px 100px;
  text-align: center;
}

.hero__blob {
  position: absolute;
  inset: -20% -10% auto -10%;
  height: 640px;
  background: radial-gradient(circle at 30% 30%, var(--md-primary-container), transparent 60%),
    radial-gradient(circle at 75% 20%, var(--md-tertiary-container), transparent 55%),
    radial-gradient(circle at 50% 70%, var(--md-secondary-container), transparent 60%);
  border-radius: 40% 60% 65% 35% / 45% 40% 60% 55%;
  filter: blur(10px);
  opacity: 0.9;
  z-index: -1;
  animation: blob-morph 16s var(--ease-standard) infinite alternate;
}

@keyframes blob-morph {
  0% {
    border-radius: 40% 60% 65% 35% / 45% 40% 60% 55%;
  }
  50% {
    border-radius: 55% 45% 35% 65% / 60% 55% 45% 40%;
  }
  100% {
    border-radius: 35% 65% 45% 55% / 50% 60% 40% 50%;
  }
}

.hero__content {
  max-width: 720px;
  margin: 0 auto;
}

.eyebrow {
  font-weight: 700;
  color: var(--md-primary);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.85rem;
  margin: 0 0 12px;
}

.display {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.6rem, 7vw, 4.6rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
  background: linear-gradient(120deg, var(--md-primary), var(--md-tertiary) 60%, var(--md-secondary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__subtitle {
  font-size: 1.15rem;
  color: var(--md-on-surface-variant);
  margin: 0 0 36px;
}

.hero__actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------------------------------- Buttons ---------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 14px 28px;
  border-radius: var(--shape-full);
  border: none;
  cursor: pointer;
  transition: background-color 0.3s var(--ease-standard), transform 0.35s var(--ease-expressive), box-shadow 0.3s var(--ease-standard);
}

.btn:hover {
  transform: translateY(-2px) scale(1.02);
}
.btn:active {
  transform: translateY(0) scale(0.98);
}

.btn-filled {
  background: var(--md-primary);
  color: var(--md-on-primary);
  box-shadow: 0 4px 14px color-mix(in srgb, var(--md-primary) 40%, transparent);
}

.btn-tonal {
  background: var(--md-secondary-container);
  color: var(--md-on-secondary-container);
}

.btn-outlined {
  background: transparent;
  color: var(--md-primary);
  border: 1.5px solid var(--md-outline);
}

.view-all {
  margin-top: 32px;
}

/* ---------------------------------- About ---------------------------------- */

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: start;
}

.about-copy p {
  font-size: 1.08rem;
  color: var(--md-on-surface-variant);
}

.fact-cards {
  display: grid;
  gap: 16px;
  margin: 0;
}

.fact-card {
  padding: 20px 24px;
  border-radius: var(--shape-lg);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  transition: transform 0.35s var(--ease-expressive);
}

.fact-card:hover {
  transform: translateX(4px);
}

.fact-card dt {
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  opacity: 0.8;
}

.fact-card dd {
  margin: 0;
  font-weight: 700;
  font-size: 1.1rem;
  text-align: right;
}

.fact-card dd a {
  color: inherit;
  text-decoration: none;
}
.fact-card dd a:hover {
  text-decoration: underline;
}

.fact-card--a {
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  border-radius: var(--shape-xl) var(--shape-xs) var(--shape-xl) var(--shape-xs);
}
.fact-card--b {
  background: var(--md-secondary-container);
  color: var(--md-on-secondary-container);
  border-radius: var(--shape-xs) var(--shape-xl) var(--shape-xs) var(--shape-xl);
}
.fact-card--c {
  background: var(--md-tertiary-container);
  color: var(--md-on-tertiary-container);
  border-radius: var(--shape-xl) var(--shape-xs) var(--shape-xl) var(--shape-xs);
}
.fact-card--d {
  background: var(--md-surface-container-high);
  color: var(--md-on-surface);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--shape-xs) var(--shape-xl) var(--shape-xs) var(--shape-xl);
}

/* ---------------------------------- Projects ---------------------------------- */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.project-card {
  background: var(--md-surface-container-low);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--shape-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-decoration: none;
  color: inherit;
  transition: transform 0.35s var(--ease-expressive), box-shadow 0.35s var(--ease-standard), border-radius 0.35s var(--ease-expressive);
}

.project-card:hover,
.project-card:focus-visible {
  transform: translateY(-6px);
  box-shadow: 0 16px 32px color-mix(in srgb, var(--md-on-surface) 12%, transparent);
  border-radius: var(--shape-xl) var(--shape-xs) var(--shape-xl) var(--shape-xs);
}

.project-card__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  margin: 0;
}

.project-card__desc {
  color: var(--md-on-surface-variant);
  font-size: 0.95rem;
  margin: 0;
  flex: 1;
}

.project-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--md-on-surface-variant);
}

.lang-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-right: 6px;
  vertical-align: middle;
}

.project-card__link {
  font-weight: 600;
  color: var(--md-primary);
}

/* ---------------------------------- Stats / activity ---------------------------------- */

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 8px;
}

.card {
  background: var(--md-surface-container-low);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--shape-lg);
  padding: 28px;
}

.card h3 {
  font-family: var(--font-display);
  margin: 0 0 4px;
  font-size: 1.15rem;
}

.card-hint {
  color: var(--md-on-surface-variant);
  font-size: 0.85rem;
  margin: 0 0 20px;
}

.loading-text {
  color: var(--md-on-surface-variant);
  font-style: italic;
}

.error-text {
  color: var(--md-error);
}

.lang-bar-row {
  display: grid;
  grid-template-columns: 90px 1fr 40px;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  font-size: 0.9rem;
}

.lang-bar-track {
  display: flex;
  align-items: center;
  gap: 5px;
  height: 14px;
}

.lang-bar-fill {
  height: 100%;
  min-width: 6px;
  flex: 0 0 auto;
  border-radius: var(--shape-full);
  transition: flex-basis 0.8s var(--ease-standard);
}

.lang-bar-remainder {
  height: 45%;
  flex: 1 1 0%;
  min-width: 0;
  background: var(--md-surface-container-high);
  border-radius: var(--shape-full);
}

.lang-bar-stop {
  flex: 0 0 auto;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--md-on-surface-variant);
}

.repo-count {
  margin-top: 20px;
  font-size: 0.85rem;
  color: var(--md-on-surface-variant);
}

.activity-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.activity-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 0.95rem;
}

.activity-dot {
  flex: none;
  width: 8px;
  height: 8px;
  margin-top: 7px;
  border-radius: 50%;
  background: var(--md-primary);
}

.activity-repo {
  font-weight: 600;
}

.activity-time {
  color: var(--md-on-surface-variant);
  font-size: 0.82rem;
}

/* ---------------------------------- Footer ---------------------------------- */

/* ---------------------------------- Contact ---------------------------------- */

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
  padding-bottom: 20px;
}

.contact-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  background: var(--md-surface-container-low);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--shape-lg);
  padding: 24px;
  text-decoration: none;
  color: var(--md-on-surface);
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: transform 0.35s var(--ease-expressive), box-shadow 0.35s var(--ease-standard), border-radius 0.35s var(--ease-expressive), background-color 0.3s var(--ease-standard);
}

.contact-card:hover,
.contact-card:focus-visible {
  transform: translateY(-6px);
  box-shadow: 0 16px 32px color-mix(in srgb, var(--md-on-surface) 12%, transparent);
  border-radius: var(--shape-xl) var(--shape-xs) var(--shape-xl) var(--shape-xs);
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
}

.contact-card__icon {
  width: 28px;
  height: 28px;
  fill: currentColor;
}

.contact-card__label {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
}

.contact-card__handle {
  color: var(--md-on-surface-variant);
  font-size: 0.9rem;
}

.contact-card:hover .contact-card__handle,
.contact-card:focus-visible .contact-card__handle {
  color: inherit;
  opacity: 0.8;
}

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

@media (max-width: 860px) {
  .about-grid,
  .stats-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .top-nav {
    display: none;
  }
  .top-bar__inner {
    gap: 12px;
  }
  .lang-chip {
    padding: 7px 9px;
  }
}

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