/* ==========================================
   IRA THEME - Mobile-First CSS
   ========================================== */

/* --- CSS Custom Properties --- */
:root {
  /* Colors */
  --color-bg: #fafafa;
  --color-bg-alt: #ffffff;
  --color-text: #1a1a2e;
  --color-text-muted: #6b7280;
  --color-primary: #87a330;
  /* Updated Green */
  --color-primary-hover: #6f8623;
  /* Darker shade of green */
  --color-accent: #ff66c4;
  /* Updated Pink */
  --color-highlight: #ffde59;
  /* New Yellow */
  --color-border: #e5e7eb;
  --color-card-shadow: rgba(0, 0, 0, 0.05);

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 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: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Layout */
  --container-max: 1100px;
  --container-narrow: 720px;
  --border-radius: 12px;
  --border-radius-lg: 16px;

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

/* --- Reset & Base --- */
*,
*::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-family);
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

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

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container--narrow {
  max-width: var(--container-narrow);
}

.main {
  flex: 1;
  padding: var(--spacing-xl) 0 var(--spacing-3xl);
}

/* --- Header & Navigation --- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: rgba(255, 255, 255, 0.85);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav__logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.nav__logo:hover {
  opacity: 0.8;
  /* Simple hover effect for gradient text */
}

.nav__toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav__toggle--active .nav__toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__toggle--active .nav__toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav__toggle--active .nav__toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav__menu {
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
  list-style: none;
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: transform var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
}

.nav__menu--open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.nav__link {
  font-size: var(--font-size-lg);
  font-weight: 500;
  color: var(--color-text-muted);
  padding: var(--spacing-sm) 0;
  display: block;
}

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

/* --- Homepage Hero --- */
.hero {
  text-align: center;
  padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.hero__photo {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto var(--spacing-md);
  border: none;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
}

.hero__title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary);
  display: inline-block;
}

.hero__subtitle {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  max-width: 440px;
  margin: 0 auto var(--spacing-lg);
  line-height: 1.6;
}

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

/* --- Section Titles --- */
.section-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-xl);
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 40px;
  height: 3px;
  background: var(--color-highlight);
  border-radius: 2px;
}

/* --- Cards --- */
.card {
  background: var(--color-bg-alt);
  border-radius: var(--border-radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  position: relative;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px var(--color-card-shadow);
}

.card__image {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.card__content {
  padding: var(--spacing-lg);
}

.card--text .card__content {
  padding: var(--spacing-md) var(--spacing-lg);
}

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

.card__title a {
  color: inherit;
}

.card__title a::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
}

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

.card__meta {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-sm);
}

.card__excerpt {
  color: var(--color-text-muted);
  line-height: 1.6;
}

.card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-md);
}

.card__tag {
  font-size: var(--font-size-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--color-bg);
  border-radius: 4px;
  color: var(--color-text-muted);
}

/* --- Post/Project Grid --- */
.grid {
  display: grid;
  gap: var(--spacing-xl);
}

.grid--compact {
  align-items: start;
}

/* --- Single Post/Page --- */
.page-header {
  margin-bottom: var(--spacing-2xl);
}

.page-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
  display: inline-block;
}

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

.page-featured-image {
  width: 100%;
  border-radius: var(--border-radius-lg);
  margin-bottom: var(--spacing-2xl);
}

/* --- Content Styling --- */
.content {
  max-width: var(--container-narrow);
  margin: 0 auto;
}

.content h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-top: var(--spacing-2xl);
  margin-bottom: var(--spacing-md);
}

.content h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

.content p {
  margin-bottom: var(--spacing-lg);
}

.content ul,
.content ol {
  margin-bottom: var(--spacing-lg);
  padding-left: var(--spacing-xl);
}

.content li {
  margin-bottom: var(--spacing-sm);
}

.content img {
  border-radius: var(--border-radius);
  margin: var(--spacing-xl) 0;
}

.content blockquote {
  border-left: 3px solid var(--color-primary);
  padding-left: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
  font-style: italic;
  color: var(--color-text-muted);
}

.content code {
  background: var(--color-bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
}

.content pre {
  background: var(--color-text);
  color: var(--color-bg);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  overflow-x: auto;
  margin: var(--spacing-xl) 0;
}

.content pre code {
  background: transparent;
  padding: 0;
}

/* --- About Page (Centered) --- */
.about-centered {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.about-centered__photo {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--color-highlight);
  /* Yellow border */
  box-shadow: 0 8px 30px var(--color-card-shadow);
}

.about-centered__title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.about-centered__interests {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
}

.about-centered__tag {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  background: rgba(135, 163, 48, 0.1);
  border: 1px solid rgba(135, 163, 48, 0.2);
  border-radius: 100px;
  font-size: var(--font-size-sm);
  color: #87a330;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.about-centered__tag:hover {
  border-color: #87a330;
  background: rgba(135, 163, 48, 0.15);
  transform: translateY(-1px);
}

/* --- Home Gallery --- */
.home-gallery {
  margin-top: var(--spacing-3xl);
  margin-bottom: var(--spacing-3xl);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xl);
}

.section-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin: 0;
}

.section-link {
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  font-size: var(--font-size-lg);
}

.section-link:hover {
  text-decoration: underline;
}

/* --- Home Navigation Cards --- */
.home-nav {
  margin-top: var(--spacing-lg);
}

.home-nav__grid {
  display: grid;
  gap: var(--spacing-xl);
}

.home-nav__card {
  display: flex;
  flex-direction: column;
  background: var(--color-bg-alt);
  border-radius: var(--border-radius);
  padding: var(--spacing-md) var(--spacing-lg);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-primary);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  text-decoration: none;
  height: 100%;
}

.home-nav__subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
}

.home-nav__latest {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--color-border);
  margin-top: auto;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.home-nav__label {
  font-weight: 600;
  color: var(--color-primary);
  margin-right: var(--spacing-xs);
}

.home-nav__card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px var(--color-card-shadow);
}

.home-nav__title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.home-nav__icon {
  font-size: var(--font-size-xl);
}

.home-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.home-nav__list li {
  border-bottom: 1px solid var(--color-border);
}

.home-nav__list li:last-child {
  border-bottom: none;
}

.home-nav__link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) 0;
  color: var(--color-text);
  transition: all var(--transition-fast);
}

.home-nav__link:hover {
  color: var(--color-primary);
  padding-left: var(--spacing-sm);
}

.home-nav__link-text {
  font-weight: 500;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  padding-right: var(--spacing-md);
}

.home-nav__link-date {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  white-space: nowrap;
}

.home-nav__link-tech {
  font-size: var(--font-size-xs);
  padding: 2px 8px;
  background: var(--color-bg);
  border-radius: 4px;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.home-nav__more {
  display: inline-block;
  margin-top: var(--spacing-lg);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-primary);
  transition: all var(--transition-fast);
}

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



/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-radius: 100px;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  z-index: 2;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
  color: white;
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
  color: white;
}

.btn--outline {
  background: transparent;
  border: 2px solid var(--color-border);
  color: var(--color-text);
}

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

/* --- Photo Gallery --- */
.photo-grid {
  column-count: 1;
  column-gap: var(--spacing-lg);
  margin-bottom: var(--spacing-3xl);
}

.photo-card {
  display: block;
  background: var(--color-bg-alt);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  text-decoration: none;
  break-inside: avoid;
  margin-bottom: var(--spacing-lg);
}

.photo-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 20px rgba(0, 0, 0, 0.1);
}

.photo-card__image-wrapper {
  position: relative;
  overflow: hidden;
}

.photo-card__image {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 500ms ease;
}

.photo-card:hover .photo-card__image {
  transform: scale(1.05);
}



/* --- Single Photo View --- */
.photo-single {
  max-width: 900px;
  margin: 0 auto;
}

.photo-single__header {
  margin-bottom: var(--spacing-xl);
}

.photo-single__content {
  background: var(--color-bg-alt);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  margin-bottom: var(--spacing-2xl);
}

.photo-single__image-container {
  width: 100%;
  background: #f0f0f0;
}

.photo-single__image {
  width: 100%;
  height: auto;
  display: block;
}

.photo-single__details {
  padding: var(--spacing-xl);
}

.photo-single__title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

.photo-single__description {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--spacing-lg);
}

.photo-single__date {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  font-style: italic;
}

.photo-single__nav {
  display: flex;
  justify-content: space-between;
  gap: var(--spacing-lg);
}

.photo-single__nav-link {
  flex: 1;
  padding: var(--spacing-md);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  transition: all var(--transition-fast);
}

.photo-single__nav-link:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.photo-single__nav-link--next {
  text-align: right;
}

.photo-single__nav-label {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  font-weight: 600;
}

.photo-single__nav-title {
  font-weight: 600;
  color: var(--color-text);
}


/* ==========================================
   RESPONSIVE - Tablet (768px+)
   ========================================== */
@media (min-width: 768px) {
  .nav__toggle {
    display: none;
  }

  .nav__menu {
    position: static;
    flex-direction: row;
    background: transparent;
    border: none;
    padding: 0;
    transform: none;
    opacity: 1;
    visibility: visible;
    gap: var(--spacing-lg);
  }

  .nav__link {
    font-size: var(--font-size-base);
    padding: var(--spacing-xs) 0;
  }

  .hero {
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
  }

  .hero__photo {
    width: 140px;
    height: 140px;
  }

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

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

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

  .photo-grid {
    column-count: 2;
  }

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

  /* Remove old about styles as we are using the centered layout now */
  .page-title {
    font-size: var(--font-size-4xl);
  }

  .footer__content {
    flex-direction: row;
    justify-content: space-between;
  }
}

/* ==========================================
   RESPONSIVE - Desktop (1024px+)
   ========================================== */
@media (min-width: 1024px) {
  .container {
    padding: 0 var(--spacing-xl);
  }

  .hero__title {
    font-size: var(--font-size-5xl);
  }

  .hero__subtitle {
    font-size: var(--font-size-xl);
  }

  .grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .home-nav__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .photo-grid {
    column-count: 3;
  }

  .page-title {
    font-size: var(--font-size-5xl);
  }
}