/* ========================================
   Thomas K. Moore — Portfolio Styles
   ======================================== */

/* --- Custom Properties (Light theme) --- */
:root {
  --bg: #f8f7f4;
  --bg-alt: #efeee9;
  --text: #1a1a1a;
  --text-muted: #555;
  --accent: #3a3a3a;
  --border: #d4d2cc;
  --card-bg: #fff;
  --shadow: rgba(0, 0, 0, 0.08);
  --header-bg: rgba(248, 247, 244, 0.92);
  --lightbox-bg: rgba(0, 0, 0, 0.92);
  --radius: 8px;
  --transition: 0.25s ease;
}

/* --- Dark theme --- */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111;
    --bg-alt: #1a1a1a;
    --text: #e8e6e1;
    --text-muted: #999;
    --accent: #ccc;
    --border: #333;
    --card-bg: #1e1e1e;
    --shadow: rgba(0, 0, 0, 0.4);
    --header-bg: rgba(17, 17, 17, 0.92);
  }
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 70px;
}

body {
  font-family: garamond-premier-pro-display, serif;
  font-weight: 400;
  font-size: 1.15rem;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

a:hover {
  opacity: 0.7;
}

ul {
  list-style: none;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

/* --- Header / Nav --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 5%;
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.main-nav ul {
  display: flex;
  gap: 1.8rem;
}

.main-nav a {
  font-size: 0.92rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* --- Hero --- */
.hero {
  text-align: center;
  padding: 6rem 1rem 4rem;
}

.hero h1 {
  font-size: clamp(2.2rem, 6vw, 3.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.4rem;
}

.tagline {
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  color: var(--text-muted);
  font-weight: 300;
}

.hero-social {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 1.2rem;
}

.hero-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: color var(--transition), transform var(--transition);
}

.hero-social a:hover {
  color: var(--text);
  transform: translateY(-2px);
  opacity: 1;
}

/* --- Sections --- */
.section {
  padding: 4rem 0;
}

.section h2 {
  font-size: 2.4rem;
  font-weight: 700;
  margin-bottom: 2rem;
  text-align: center;
  letter-spacing: -0.01em;
}

/* --- Video Grid --- */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 480px), 1fr));
  gap: 1.5rem;
}

.video-wrap {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--bg-alt);
}

.video-wrap iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
  border-radius: var(--radius);
}

/* --- Gallery Filters --- */
.gallery-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.filter-btn {
  background: var(--bg-alt);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 0.5rem 1.1rem;
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
}

.filter-btn:hover {
  background: var(--border);
}

.filter-btn.active {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

/* --- Gallery Grid --- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}

.gallery-item {
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  background: var(--bg-alt);
  transition: transform var(--transition), box-shadow var(--transition);
  aspect-ratio: 1 / 1;
}

.gallery-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px var(--shadow);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.gallery-item:hover img {
  transform: scale(1.04);
}

.gallery-item.hidden {
  display: none;
}

/* --- Skills Grid --- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.skill-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.skill-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
}

.skill-card li {
  padding: 0.25rem 0;
  color: var(--text-muted);
  font-size: 1.1rem;
}

/* --- About --- */
.about-content {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.about-content p {
  margin-bottom: 1rem;
  color: var(--text-muted);
  font-size: 1.4rem;
  line-height: 1.75;
}


/* --- Footer --- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
}

.site-footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-footer p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 90;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--text);
  color: var(--bg);
  border-radius: 50%;
  font-size: 1.3rem;
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 4px 12px var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top:hover {
  transform: translateY(-3px);
  opacity: 0.85;
}

/* --- Lightbox --- */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: var(--lightbox-bg);
  align-items: center;
  justify-content: center;
}

.lightbox.active {
  display: flex;
}

.lightbox-content {
  max-width: 90vw;
  max-height: 90vh;
}

.lightbox-content img {
  max-width: 90vw;
  max-height: 88vh;
  object-fit: contain;
  border-radius: 4px;
  user-select: none;
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
  position: absolute;
  background: none;
  border: none;
  color: #fff;
  cursor: pointer;
  transition: opacity var(--transition);
  z-index: 1001;
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
  opacity: 0.6;
}

.lightbox-close {
  top: 1rem;
  right: 1.5rem;
  font-size: 2.5rem;
  line-height: 1;
}

.lightbox-prev,
.lightbox-next {
  top: 50%;
  transform: translateY(-50%);
  font-size: 3rem;
  padding: 0.5rem;
}

.lightbox-prev { left: 1rem; }
.lightbox-next { right: 1rem; }

/* --- Responsive --- */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--header-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 1rem 5%;
  }

  .main-nav.open {
    display: block;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 1rem;
  }

  .hero {
    padding: 4rem 1rem 2.5rem;
  }

  .section {
    padding: 3rem 0;
  }

  .gallery-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 0.6rem;
  }

  .lightbox-prev { left: 0.4rem; font-size: 2.2rem; }
  .lightbox-next { right: 0.4rem; font-size: 2.2rem; }

  .site-footer .container {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}

/* Hamburger open state */
.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}