/* Inter Variable Font - Self-hosted */

/* latin-ext */

@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("../fonts/inter-latin-ext.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7,
    U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F,
    U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F,
    U+A720-A7FF;
}

/* latin */

@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("../fonts/inter-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6,
    U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122,
    U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  /* Colors - Dark Theme */
  --color-bg-primary: #0f0f23;
  --color-bg-secondary: #1a1a2e;
  --color-bg-card: #16213e;
  --color-text-primary: #e6e6e6;
  --color-text-secondary: #a0a0a0;
  --color-text-muted: #6b6b6b;
  --color-accent: #4fc3f7;
  --color-accent-hover: #81d4fa;
  --color-border: #2a2a4a;

  /* Category colors */
  --color-category-backend: #4caf50;
  --color-category-iot: #ff9800;
  --color-category-web: #2196f3;
  --color-category-tools: #9c27b0;

  /* Status colors */
  --color-status-active: #4caf50;
  --color-status-active-bg: rgba(76, 175, 80, 0.15);

  /* Typography */
  --font-family-base: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --line-height-tight: 1.25;
  --line-height-base: 1.6;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-8: 3rem;
  --space-10: 4rem;
  --space-12: 6rem;

  /* Layout */
  --container-max: 1200px;
  --container-padding: var(--space-4);

  /* Borders */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.25);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;

  /* Filter Animation */
  --filter-animation-duration: 350ms;
  --filter-stagger-delay: 30ms;
  --filter-easing: cubic-bezier(0.16, 1, 0.3, 1);

  /* Z-index layers */
  --z-base: 0;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal: 400;
  --z-tooltip: 500;
}

/* ===================
   LIGHT THEME
   =================== */

/* System preference fallback (when no explicit choice saved) */

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --color-bg-primary: #f8f9fa;
    --color-bg-secondary: #e9ecef;
    --color-bg-card: #ffffff;
    --color-text-primary: #1a1a2e;
    --color-text-secondary: #495057;
    --color-text-muted: #868e96;
    --color-accent: #0277bd;
    --color-accent-hover: #01579b;
    --color-border: #dee2e6;

    /* Category colors adjusted for light backgrounds */
    --color-category-backend: #2e7d32;
    --color-category-iot: #e65100;
    --color-category-web: #1565c0;
    --color-category-tools: #7b1fa2;

    /* Status colors adjusted for light backgrounds */
    --color-status-active: #2e7d32;
    --color-status-active-bg: rgba(46, 125, 50, 0.12);

    /* Shadows more visible on light backgrounds */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.12);
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.1);
  }
}

/* Explicit light theme (user selected) */

[data-theme="light"] {
  --color-bg-primary: #f8f9fa;
  --color-bg-secondary: #e9ecef;
  --color-bg-card: #ffffff;
  --color-text-primary: #1a1a2e;
  --color-text-secondary: #495057;
  --color-text-muted: #868e96;
  --color-accent: #0277bd;
  --color-accent-hover: #01579b;
  --color-border: #dee2e6;

  /* Category colors adjusted for light backgrounds */
  --color-category-backend: #2e7d32;
  --color-category-iot: #e65100;
  --color-category-web: #1565c0;
  --color-category-tools: #7b1fa2;

  /* Status colors adjusted for light backgrounds */
  --color-status-active: #2e7d32;
  --color-status-active-bg: rgba(46, 125, 50, 0.12);

  /* Shadows more visible on light backgrounds */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.12);
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.1);
}

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

html {
  font-size: 100%;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-hover);
}

a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  line-height: var(--line-height-tight);
  font-weight: var(--font-weight-semibold);
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

/* Container */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

/* Section spacing */

.section {
  padding-block: var(--space-10);
}

.section__title {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-6);
}

/* Skip link for accessibility */

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: var(--color-accent);
  color: var(--color-bg-primary);
  z-index: var(--z-tooltip);
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-medium);
}

.skip-link:focus {
  top: var(--space-4);
}

/* External link indicator */

.link--external::after {
  content: "";
  display: inline-block;
  width: 0.75em;
  height: 0.75em;
  margin-left: 0.25em;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234fc3f7' stroke-width='2'%3E%3Cpath d='M18 13v6a2 2 0 01-2 2H5a2 2 0 01-2-2V8a2 2 0 012-2h6'%3E%3C/path%3E%3Cpolyline points='15,3 21,3 21,9'%3E%3C/polyline%3E%3Cline x1='10' y1='14' x2='21' y2='3'%3E%3C/line%3E%3C/svg%3E");
  background-size: contain;
  background-repeat: no-repeat;
  vertical-align: middle;
  opacity: 0.8;
}

/* Visually hidden (screen reader only) */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Text utilities */

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

.text-muted {
  color: var(--color-text-muted);
}

.font-medium {
  font-weight: var(--font-weight-medium);
}

.font-bold {
  font-weight: var(--font-weight-bold);
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-5);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
}

.btn--primary {
  background-color: var(--color-accent);
  color: var(--color-bg-primary);
}

.btn--primary:hover {
  background-color: var(--color-accent-hover);
  color: var(--color-bg-primary);
  transform: translateY(-2px);
}

.btn--secondary {
  background-color: transparent;
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn--secondary:hover {
  background-color: var(--color-accent);
  color: var(--color-bg-primary);
}

/* Project Card */

.project-card {
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    opacity var(--transition-base);
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

/* Project Card Thumbnail */

.project-card__thumbnail {
  overflow: hidden;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  margin: calc(var(--space-5) * -1);
  margin-bottom: var(--space-4);
  background-color: var(--color-bg-secondary);
}

.project-card__thumbnail img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform var(--transition-base);
}

.project-card:hover .project-card__thumbnail img {
  transform: scale(1.05);
}

/* Placeholder when image fails to load */

.project-card__thumbnail img[src=""],
.project-card__thumbnail img:not([src]) {
  display: none;
}

.project-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-3);
}

.project-card__category {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
}

.project-card[data-category="backend"] .project-card__category {
  background-color: rgba(76, 175, 80, 0.15);
  color: var(--color-category-backend);
}

.project-card[data-category="iot"] .project-card__category {
  background-color: rgba(255, 152, 0, 0.15);
  color: var(--color-category-iot);
}

.project-card[data-category="web"] .project-card__category {
  background-color: rgba(33, 150, 243, 0.15);
  color: var(--color-category-web);
}

.project-card[data-category="tools"] .project-card__category {
  background-color: rgba(156, 39, 176, 0.15);
  color: var(--color-category-tools);
}

.project-card__links {
  display: flex;
  gap: var(--space-2);
}

.project-card__link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.project-card__link:hover {
  color: var(--color-accent);
  background-color: var(--color-bg-secondary);
}

.project-card__link svg {
  width: 1.25rem;
  height: 1.25rem;
}

.project-card__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-2);
  color: var(--color-text-primary);
}

.project-card__description {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-4);
  line-height: var(--line-height-base);
}

.project-card__tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.project-card__tech li {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  padding: var(--space-1) var(--space-2);
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-sm);
}

/* Project Card Footer (metadata: date + status) */

.project-card__footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  transition:
    border-color var(--transition-base),
    color var(--transition-base);
}

.project-card__status {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.02em;
  border-radius: var(--radius-full);
  background-color: var(--color-status-active-bg);
  color: var(--color-status-active);
  white-space: nowrap;
  transition:
    background-color var(--transition-base),
    color var(--transition-base);
}

.project-card__status-dot {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background-color: currentColor;
  animation: status-pulse 2s ease-in-out infinite;
}

@keyframes status-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

@media (prefers-reduced-motion: reduce) {
  .project-card__status-dot {
    animation: none;
  }
}

/* Skill Groups */

.skill-group {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}

.skill-group__title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-4);
  color: var(--color-accent);
}

.skill-group__list li {
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-border);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.skill-group__list li:last-child {
  border-bottom: none;
}

/* Contact Links */

.contact__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.contact__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
  color: var(--color-text-primary);
}

.contact__link:hover {
  background-color: var(--color-bg-secondary);
  color: var(--color-accent);
}

.contact__link svg {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
}

/* Theme Toggle */

.theme-toggle {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-left: var(--space-2);
  width: 2rem;
  height: 2rem;
  padding: 0;
  background-color: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast),
    border-color var(--transition-fast);
}

.theme-toggle:hover {
  color: var(--color-accent);
  background-color: var(--color-bg-secondary);
  border-color: var(--color-accent);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.theme-toggle__icon {
  width: 1.25rem;
  height: 1.25rem;
  position: absolute;
  transition:
    opacity var(--transition-base),
    transform var(--transition-base);
}

/* Default state: show sun (for dark theme), hide moon */

.theme-toggle__icon--sun {
  opacity: 1;
  transform: rotate(0deg);
}

.theme-toggle__icon--moon {
  opacity: 0;
  transform: rotate(-90deg);
}

/* Light theme: show moon, hide sun */

[data-theme="light"] .theme-toggle__icon--sun {
  opacity: 0;
  transform: rotate(90deg);
}

[data-theme="light"] .theme-toggle__icon--moon {
  opacity: 1;
  transform: rotate(0deg);
}

/* System preference fallback for icon states */

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .theme-toggle__icon--sun {
    opacity: 0;
    transform: rotate(90deg);
  }

  :root:not([data-theme="dark"]) .theme-toggle__icon--moon {
    opacity: 1;
    transform: rotate(0deg);
  }
}

/* Project Filters */

.project-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.filter-btn {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition:
    background-color var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast),
    transform var(--transition-fast);
}

.filter-btn:hover {
  background-color: var(--color-bg-card);
  color: var(--color-text-primary);
  transform: translateY(-1px);
}

.filter-btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Active state - category colored */

.filter-btn--active {
  color: var(--color-bg-primary);
  border-color: transparent;
}

.filter-btn--active[data-filter="all"] {
  background-color: var(--color-accent);
}

.filter-btn--active[data-filter="backend"] {
  background-color: var(--color-category-backend);
}

.filter-btn--active[data-filter="iot"] {
  background-color: var(--color-category-iot);
}

.filter-btn--active[data-filter="web"] {
  background-color: var(--color-category-web);
}

.filter-btn--active[data-filter="tools"] {
  background-color: var(--color-category-tools);
}

/* ===================
   FILTER ANIMATIONS
   =================== */

/* Exit animation state - fade out + scale down */

.project-card--filtering-out {
  opacity: 0;
  transform: scale(0.92);
  pointer-events: none;
  transition:
    opacity var(--filter-animation-duration) var(--filter-easing),
    transform var(--filter-animation-duration) var(--filter-easing);
}

/* Entrance animation - start state */

.project-card--filtering-in {
  opacity: 0;
  transform: scale(0.92) translateY(12px);
}

/* Entrance animation - end state (triggered by adding .is-filtering) */

.project-card--filtering-in.is-filtering {
  opacity: 1;
  transform: scale(1) translateY(0);
  transition:
    opacity var(--filter-animation-duration) var(--filter-easing),
    transform var(--filter-animation-duration) var(--filter-easing);
}

/* Final hidden state - removes card from layout flow */

.project-card--hidden {
  opacity: 0;
  transform: scale(0.92);
  pointer-events: none;
  position: absolute;
  visibility: hidden;
}

/* Disable filter animations for reduced motion preference */

@media (prefers-reduced-motion: reduce) {
  .project-card--filtering-out,
  .project-card--filtering-in,
  .project-card--filtering-in.is-filtering {
    transition: none;
  }
}

/* ===================
   SCROLL ANIMATIONS
   =================== */

/* Base state - hidden before animation */

[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 400ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 400ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* Elements with their own transitions need combined declarations */

.project-card[data-animate],
.skill-group[data-animate] {
  transition:
    background-color var(--transition-base),
    border-color var(--transition-base),
    color var(--transition-base),
    opacity 400ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 400ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* Visible state - after animation triggers */

[data-animate].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Respect user preferences - show elements immediately without animation */

@media (prefers-reduced-motion: reduce) {
  [data-animate] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ===================
   ERROR PAGE (404)
   =================== */

.error-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 200px);
  text-align: center;
}

.error-page__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-8) var(--space-4);
}

.error-page__image {
  max-width: 280px;
  height: auto;
  border-radius: var(--radius-lg);
}

.error-page__title {
  font-size: clamp(4rem, 15vw, 8rem);
  font-weight: var(--font-weight-bold);
  line-height: 1;
  color: var(--color-accent);
  margin: 0;
}

.error-page__message {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0;
}

.error-page__description {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  max-width: 400px;
  margin: 0;
}

.error-page__button {
  margin-top: var(--space-4);
}

/* ===================
   THEME TRANSITIONS
   =================== */

body,
.site-header,
.project-card,
.skill-group,
.contact__link,
.btn {
  transition:
    background-color var(--transition-base),
    border-color var(--transition-base),
    color var(--transition-base);
}

/* ===================
   LAYOUT SECTIONS
   =================== */

/* Header/Navigation */

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background-color: var(--color-bg-primary);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-4) 0;
}

.nav {
  display: flex;
  align-items: center;
}

.nav__list {
  display: flex;
  justify-content: center;
  flex: 1;
  min-width: 0;
  gap: var(--space-3);
}

.nav__list a {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  padding: var(--space-2);
}

.nav__list a:hover {
  color: var(--color-accent);
}

/* Hero */

.hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  text-align: center;
  padding-block: var(--space-12);
}

.hero__title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-2);
}

.hero__subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

.hero__tagline {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
  max-width: 600px;
  margin-inline: auto;
}

.hero__cta {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

/* About */

.about__content {
  max-width: 700px;
  margin-inline: auto;
}

.about__content p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.about__content p:last-child {
  margin-bottom: 0;
}

/* Projects Grid - Masonry layout */

.projects__grid {
  columns: 1;
  column-gap: var(--space-5);
}

.projects__grid .project-card {
  break-inside: avoid;
  margin-bottom: var(--space-5);
}

.projects__more {
  text-align: center;
  margin-top: var(--space-8);
}

/* Skills Grid */

.skills__grid {
  display: grid;
  gap: var(--space-5);
}

/* Contact */

.contact__intro {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
}

/* Footer */

.site-footer {
  padding: var(--space-6) 0;
  text-align: center;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

/* ===================
   RESPONSIVE
   =================== */

/* Tablet (600px+) */

@media (min-width: 37.5em) {
  :root {
    --container-padding: var(--space-6);
  }

  .nav__list {
    gap: var(--space-6);
  }

  .hero__title {
    font-size: calc(var(--font-size-4xl) * 1.25);
  }

  .projects__grid {
    columns: 2;
  }

  .skills__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact__links {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
  }
}

/* Desktop (900px+) */

@media (min-width: 56.25em) {
  .hero {
    min-height: 90vh;
  }

  .projects__grid {
    columns: 3;
  }

  .skills__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Large Desktop (1200px+) */

@media (min-width: 75em) {
  :root {
    --container-padding: var(--space-8);
  }
}

/* ===================
   PRINT STYLES
   =================== */

@media print {
  .site-header,
  .hero__cta,
  .skip-link {
    display: none;
  }

  body {
    background: white;
    color: black;
  }

  a {
    color: black;
    text-decoration: underline;
  }

  .project-card,
  .skill-group,
  .contact__link {
    border: 1px solid #ccc;
    background: white;
  }
}

/* ===================
   REDUCED MOTION
   =================== */

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

  html {
    scroll-behavior: auto;
  }
}