/* ============================================
   AgereAI Portfolio - Design System
   ============================================ */

/* CSS Custom Properties (Design Tokens) */
:root {
  /* Colors */
  --color-bg: #0f0f1a;
  --color-surface: #1a1a2e;
  --color-surface-elevated: #252542;
  --color-primary: #16c79a;
  --color-primary-hover: #14b38a;
  --color-secondary: #6c63ff;
  --color-secondary-hover: #5a52e0;
  --color-text: #ffffff;
  --color-text-secondary: #a0a0b0;
  --color-text-muted: #6a6a7a;
  --color-border: #2a2a4a;
  --color-border-light: #3a3a5a;

  /* Status Colors */
  --color-status-mvp: #10b981;
  --color-status-progress: #f59e0b;
  --color-status-planned: #6c63ff;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #16c79a 0%, #6c63ff 100%);
  --gradient-hero: linear-gradient(180deg, #1a1a2e 0%, #0f0f1a 100%);
  --gradient-card: linear-gradient(145deg, #1a1a2e 0%, #151528 100%);

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Font Sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;
  --text-4xl: 2.5rem;
  --text-5xl: 3rem;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(22, 199, 154, 0.2);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;

  /* Layout */
  --container-max: 1200px;
  --nav-height: 70px;
}

/* ============================================
   Reset & Base Styles
   ============================================ */

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
}

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

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ============================================
   Typography
   ============================================ */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-text);
}

h1 {
  font-size: var(--text-5xl);
  font-weight: 700;
}

h2 {
  font-size: var(--text-3xl);
}

h3 {
  font-size: var(--text-2xl);
}

h4 {
  font-size: var(--text-xl);
}

p {
  color: var(--color-text-secondary);
}

.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

code,
.mono {
  font-family: var(--font-mono);
}

/* ============================================
   Layout
   ============================================ */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.section {
  padding: var(--space-20) 0;
}

.section--tight {
  padding: var(--space-12) 0;
}

/* ============================================
   Navigation
   ============================================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(15, 15, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
}

.nav__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__logo {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav__logo-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  object-fit: cover;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav__link {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-text);
}

.nav__link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
}

.nav__mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
}

.nav__mobile-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .nav__mobile-toggle {
    display: flex;
  }

  .nav__links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--color-surface);
    flex-direction: column;
    padding: var(--space-6);
    gap: var(--space-4);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
  }

  .nav__links.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav__link {
    font-size: var(--text-base);
    padding: var(--space-2) 0;
  }
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn--primary {
  background: var(--gradient-primary);
  color: var(--color-bg);
  box-shadow: var(--shadow-glow);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px rgba(22, 199, 154, 0.3);
  color: var(--color-bg);
}

.btn--secondary {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn--secondary:hover {
  background: var(--color-surface-elevated);
  border-color: var(--color-border-light);
  color: var(--color-text);
}

.btn--ghost {
  background: transparent;
  color: var(--color-primary);
  padding: var(--space-2) var(--space-4);
}

.btn--ghost:hover {
  background: rgba(22, 199, 154, 0.1);
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 20% 80%, rgba(22, 199, 154, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(108, 99, 255, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(22, 199, 154, 0.1);
  border: 1px solid rgba(22, 199, 154, 0.3);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  color: var(--color-primary);
  margin-bottom: var(--space-6);
}

.hero__title {
  margin-bottom: var(--space-6);
  font-size: clamp(2.5rem, 6vw, 4rem);
}

.hero__subtitle {
  font-size: var(--text-xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-10);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero__proof {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-6);
  margin-bottom: var(--space-10);
}

.hero__proof-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
}

.hero__proof-icon {
  width: 20px;
  height: 20px;
  color: var(--color-primary);
}

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

/* ============================================
   Status Badges
   ============================================ */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-full);
}

.badge--mvp {
  background: rgba(16, 185, 129, 0.15);
  color: var(--color-status-mvp);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge--progress {
  background: rgba(245, 158, 11, 0.15);
  color: var(--color-status-progress);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge--planned {
  background: rgba(108, 99, 255, 0.15);
  color: var(--color-status-planned);
  border: 1px solid rgba(108, 99, 255, 0.3);
}

.badge__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  animation: pulse 2s infinite;
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

/* ============================================
   Tags
   ============================================ */

.tag {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.tag:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.tag--active {
  background: rgba(22, 199, 154, 0.1);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

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

/* ============================================
   Cards
   ============================================ */

.card {
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: all var(--transition-base);
}

.card:hover {
  border-color: var(--color-border-light);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.card__title {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.card__title a {
  color: inherit;
}

.card__title a:hover {
  color: var(--color-primary);
}

.card__summary {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
  line-height: 1.6;
}

.card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.card__stack {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.card__stack-item {
  font-size: var(--text-xs);
  padding: var(--space-1) var(--space-2);
  background: rgba(108, 99, 255, 0.1);
  color: var(--color-secondary);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
}

.card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

/* ============================================
   Project Grid
   ============================================ */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: var(--space-6);
}

@media (max-width: 480px) {
  .projects-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Filter Bar
   ============================================ */

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-8);
}

.filter-bar__group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
}

.filter-bar__label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  margin-right: var(--space-2);
}

.filter-bar__select {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  background: var(--color-surface-elevated);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-bar__select:hover,
.filter-bar__select:focus {
  border-color: var(--color-primary);
  outline: none;
}

.filter-bar__divider {
  width: 1px;
  height: 24px;
  background: var(--color-border);
}

/* ============================================
   Section Headers
   ============================================ */

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-12);
}

.section-header__title {
  margin-bottom: var(--space-4);
}

.section-header__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
}

.section-header--left {
  text-align: left;
  margin-left: 0;
}

/* ============================================
   Project Detail Page
   ============================================ */

.project-hero {
  padding-top: calc(var(--nav-height) + var(--space-12));
  padding-bottom: var(--space-12);
  background: var(--gradient-hero);
}

.project-hero__breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}

.project-hero__breadcrumb a:hover {
  color: var(--color-primary);
}

.project-hero__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.project-hero__title {
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: var(--space-4);
}

.project-hero__description {
  font-size: var(--text-lg);
  max-width: 700px;
}

.project-content {
  padding: var(--space-12) 0;
}

.project-content__grid {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--space-12);
}

@media (max-width: 900px) {
  .project-content__grid {
    grid-template-columns: 1fr;
  }
}

.project-section {
  margin-bottom: var(--space-10);
}

.project-section__title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.project-section__title::before {
  content: '';
  width: 4px;
  height: 24px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
}

.project-section__content {
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.project-section__content ul {
  list-style: none;
  padding-left: 0;
}

.project-section__content li {
  position: relative;
  padding-left: var(--space-6);
  margin-bottom: var(--space-3);
}

.project-section__content li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-primary);
}

/* Sidebar */
.project-sidebar {
  position: sticky;
  top: calc(var(--nav-height) + var(--space-6));
}

.project-sidebar__section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
}

.project-sidebar__title {
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

/* Checklist */
.checklist {
  list-style: none;
}

.checklist__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-2) 0;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.checklist__icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 2px;
}

.checklist__icon--done {
  color: var(--color-status-mvp);
}

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

/* Screenshots */
.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-4);
}

.screenshot {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

.screenshot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.screenshot__placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  text-align: center;
  padding: var(--space-4);
}

.screenshot__placeholder-icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-3);
  opacity: 0.5;
}

.screenshot__caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-3);
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
  font-size: var(--text-xs);
  color: var(--color-text);
}

/* ============================================
   Roadmap Page
   ============================================ */

.roadmap-section {
  margin-bottom: var(--space-16);
}

.roadmap-section__header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.roadmap-section__number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  color: var(--color-bg);
  font-weight: 700;
  font-size: var(--text-xl);
  border-radius: var(--radius-lg);
}

.roadmap-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
}

.roadmap-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.roadmap-card__outcomes {
  margin-bottom: var(--space-6);
}

.roadmap-card__outcomes-title {
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.roadmap-card__outcomes-list {
  list-style: none;
}

.roadmap-card__outcomes-list li {
  position: relative;
  padding-left: var(--space-6);
  margin-bottom: var(--space-2);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
}

.roadmap-card__outcomes-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 600;
}

.roadmap-card__proof {
  padding: var(--space-4);
  background: rgba(108, 99, 255, 0.1);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.roadmap-card__proof strong {
  color: var(--color-secondary);
}

/* ============================================
   About Page
   ============================================ */

.about-hero {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-12);
  align-items: center;
}

@media (max-width: 768px) {
  .about-hero {
    grid-template-columns: 1fr;
  }
}

.about-hero__content h1 {
  margin-bottom: var(--space-6);
}

.about-hero__content p {
  font-size: var(--text-lg);
  margin-bottom: var(--space-4);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--space-6);
}

.skill-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
}

.skill-card__icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-4);
  color: var(--color-primary);
}

.skill-card__title {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}

.skill-card__items {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ============================================
   Contact Page
   ============================================ */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
}

@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

.contact-method {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-fast);
}

.contact-method:hover {
  border-color: var(--color-primary);
  transform: translateX(4px);
}

.contact-method__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(22, 199, 154, 0.1);
  color: var(--color-primary);
  border-radius: var(--radius-lg);
}

.contact-method__icon svg {
  width: 24px;
  height: 24px;
}

.contact-method__label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.contact-method__value {
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-text);
}

/* ============================================
   Footer
   ============================================ */

.footer {
  padding: var(--space-12) 0;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.footer__content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-6);
}

.footer__logo {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
}

.footer__links {
  display: flex;
  gap: var(--space-6);
}

.footer__link {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
}

.footer__link:hover {
  color: var(--color-primary);
}

.footer__copyright {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ============================================
   Utilities
   ============================================ */

.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-center {
  text-align: center;
}

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

.mt-6 {
  margin-top: var(--space-6);
}

.mt-8 {
  margin-top: var(--space-8);
}

.mb-4 {
  margin-bottom: var(--space-4);
}

.mb-6 {
  margin-bottom: var(--space-6);
}

.mb-8 {
  margin-bottom: var(--space-8);
}

/* Hide elements */
.hidden {
  display: none !important;
}

/* Animation */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fadeIn {
  animation: fadeIn 0.3s ease forwards;
}

/* ============================================
   Page-specific padding
   ============================================ */

.page {
  padding-top: calc(var(--nav-height) + var(--space-12));
  min-height: 100vh;
}

/* ============================================
   Lightbox Modal
   ============================================ */

.lightbox {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.95);
  z-index: 2000;
  cursor: zoom-out;
}

.lightbox.active {
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.2s ease-out;
}

.lightbox__image {
  max-width: 90%;
  max-height: 90%;
  object-fit: contain;
  border-radius: var(--radius-lg);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.lightbox__close {
  position: absolute;
  top: var(--space-6);
  right: var(--space-6);
  width: 48px;
  height: 48px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  color: var(--color-text);
  font-size: 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.lightbox__close:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.lightbox__caption {
  position: absolute;
  bottom: var(--space-6);
  left: 50%;
  transform: translateX(-50%);
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  text-align: center;
  background: var(--color-surface);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
}

/* Make screenshots clickable */
.screenshot img {
  cursor: zoom-in;
  transition: transform var(--transition-fast);
}

.screenshot img:hover {
  transform: scale(1.02);
}