/* ============================================================
   One F Stop — Dark/Moody Photography Portfolio
   ============================================================ */

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

:root {
  --bg:          #0d0d0d;
  --bg-2:        #141414;
  --bg-3:        #1c1c1c;
  --surface:     #222222;
  --border:      #2e2e2e;
  --text:        #e0e0e0;
  --text-muted:  #888888;
  --accent:      #c8a96e;        /* warm gold */
  --accent-dim:  #9e7d46;
  --white:       #ffffff;
  --font-serif:  'Georgia', 'Times New Roman', serif;
  --font-sans:   'Helvetica Neue', Arial, sans-serif;
  --transition:  0.3s ease;
  --radius:      4px;
  --nav-height:  68px;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

a:hover,
a:focus-visible {
  color: var(--white);
}

ul {
  list-style: none;
}

/* --- Utility ---------------------------------------------- */
.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  background: transparent;
  transition: background var(--transition), color var(--transition);
  border-radius: var(--radius);
}

.btn:hover,
.btn:focus-visible {
  background: var(--accent);
  color: var(--bg);
  outline: none;
}

.btn-full {
  width: 100%;
  text-align: center;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  color: var(--white);
  text-align: center;
  margin-bottom: 3rem;
}

/* --- Navbar ----------------------------------------------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2.5rem;
  background: rgba(13, 13, 13, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  letter-spacing: 0.08em;
  color: var(--white);
  white-space: nowrap;
}

.nav-logo:hover,
.nav-logo:focus-visible {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 2.5rem;
}

.nav-links a {
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color var(--transition);
}

.nav-links a:hover,
.nav-links a:focus-visible,
.nav-links a.active {
  color: var(--white);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}

/* --- Hero -------------------------------------------------- */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: brightness(0.45);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(13,13,13,0.2) 0%,
    rgba(13,13,13,0.5) 60%,
    rgba(13,13,13,0.95) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 1.5rem;
}

.hero-tagline {
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--white);
  margin-bottom: 2.5rem;
  line-height: 1.1;
}

/* --- Featured Categories ---------------------------------- */
.featured {
  padding: 6rem 2.5rem;
  background: var(--bg);
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  max-width: 1400px;
  margin: 0 auto;
}

.category-card {
  position: relative;
  overflow: hidden;
  display: block;
  aspect-ratio: 3/4;
  border-radius: var(--radius);
}

.category-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease, filter 0.6s ease;
  filter: brightness(0.6);
}

.category-card:hover img,
.category-card:focus-visible img {
  transform: scale(1.05);
  filter: brightness(0.8);
}

.category-label {
  position: absolute;
  bottom: 1.5rem;
  left: 0;
  right: 0;
  text-align: center;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  letter-spacing: 0.1em;
  color: var(--white);
  text-transform: capitalize;
  pointer-events: none;
}

/* --- Page Header ------------------------------------------ */
.page-header {
  padding-top: calc(var(--nav-height) + 4rem);
  padding-bottom: 3rem;
  text-align: center;
  background: var(--bg);
}

.page-header h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--white);
}

/* --- Gallery ---------------------------------------------- */
.gallery-section {
  padding: 0 2.5rem 6rem;
  flex: 1;
}

.filter-bar {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 3rem;
}

.filter-btn {
  padding: 0.45rem 1.4rem;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: 2px;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}

.filter-btn:hover,
.filter-btn:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
  outline: none;
}

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

.gallery-grid {
  columns: 3;
  column-gap: 1.2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.gallery-item {
  position: relative;
  break-inside: avoid;
  margin-bottom: 1.2rem;
  overflow: hidden;
  border-radius: var(--radius);
  cursor: pointer;
}

.gallery-item img {
  width: 100%;
  display: block;
  transition: transform 0.5s ease, filter 0.5s ease;
  filter: brightness(0.85);
}

.gallery-item:hover img,
.gallery-item:focus-within img {
  transform: scale(1.03);
  filter: brightness(1);
}

.gallery-overlay {
  position: absolute;
  inset: 0;
  background: rgba(13, 13, 13, 0.55);
  display: flex;
  align-items: flex-end;
  padding: 1.2rem;
  opacity: 0;
  transition: opacity var(--transition);
}

.gallery-item:hover .gallery-overlay,
.gallery-item:focus-within .gallery-overlay {
  opacity: 1;
}

.gallery-overlay span {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white);
}

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

/* --- Lightbox --------------------------------------------- */
.lightbox-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.92);
  z-index: 200;
}

.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 201;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}

.lightbox.open,
.lightbox-backdrop.open {
  display: flex;
}

.lightbox-img {
  max-width: 90vw;
  max-height: 82vh;
  object-fit: contain;
  border-radius: var(--radius);
  box-shadow: 0 0 80px rgba(0,0,0,0.8);
}

.lightbox-caption {
  margin-top: 1rem;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
  position: fixed;
  background: none;
  border: none;
  color: var(--white);
  cursor: pointer;
  font-size: 2.5rem;
  line-height: 1;
  padding: 0.5rem;
  transition: color var(--transition);
  opacity: 0.7;
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
  opacity: 1;
  color: var(--accent);
}

.lightbox-close {
  top: 1.5rem;
  right: 2rem;
}

.lightbox-prev {
  left: 2rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 3rem;
}

.lightbox-next {
  right: 2rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 3rem;
}

/* --- About ------------------------------------------------ */
.about-section {
  padding: 4rem 2.5rem 6rem;
  flex: 1;
}

.about-container {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 5rem;
  align-items: start;
}

.about-photo img {
  width: 100%;
  border-radius: var(--radius);
  filter: brightness(0.85) contrast(1.05);
}

.about-text h2 {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 400;
  color: var(--white);
  margin-bottom: 1.5rem;
  letter-spacing: 0.04em;
}

.about-text p {
  color: var(--text-muted);
  margin-bottom: 1.2rem;
  font-size: 1rem;
  line-height: 1.8;
}

.about-gear {
  margin: 2.5rem 0;
  padding: 1.5rem;
  background: var(--bg-3);
  border-left: 2px solid var(--accent);
  border-radius: var(--radius);
}

.about-gear h3 {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.8rem;
}

.about-gear ul {
  padding-left: 0;
}

.about-gear li {
  color: var(--text-muted);
  font-size: 0.9rem;
  padding: 0.3rem 0;
  border-bottom: 1px solid var(--border);
}

.about-gear li:last-child {
  border-bottom: none;
}

/* --- Contact ---------------------------------------------- */
.contact-section {
  padding: 4rem 2.5rem 6rem;
  flex: 1;
}

.contact-container {
  max-width: 960px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 5rem;
  align-items: start;
}

.contact-intro h2 {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 400;
  color: var(--white);
  margin-bottom: 1.5rem;
  letter-spacing: 0.04em;
}

.contact-intro p {
  color: var(--text-muted);
  margin-bottom: 1rem;
  line-height: 1.8;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.form-group label span {
  color: var(--accent);
}

.form-group input,
.form-group select,
.form-group textarea {
  background: var(--bg-3);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  outline: none;
  transition: border-color var(--transition);
  width: 100%;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #555;
}

.form-group select option {
  background: var(--bg-3);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
}

.form-group input.error,
.form-group textarea.error {
  border-color: #c0392b;
}

.field-error {
  font-size: 0.78rem;
  color: #c0392b;
  min-height: 1rem;
}

.form-notice {
  text-align: center;
  font-size: 0.85rem;
  padding: 0.5rem;
  min-height: 1.5rem;
}

.form-notice.success {
  color: #27ae60;
}

.form-notice.error {
  color: #c0392b;
}

/* --- Footer ----------------------------------------------- */
.footer {
  padding: 2.5rem;
  text-align: center;
  border-top: 1px solid var(--border);
  background: var(--bg);
}

.footer p {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

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

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

/* --- Responsive ------------------------------------------- */
@media (max-width: 1100px) {
  .category-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .gallery-grid {
    columns: 2;
  }

  .about-container,
  .contact-container {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .about-photo img {
    max-width: 420px;
    margin: 0 auto;
  }
}

@media (max-width: 680px) {
  .navbar {
    padding: 0 1.2rem;
  }

  .nav-links {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--bg-2);
    flex-direction: column;
    gap: 0;
    border-bottom: 1px solid var(--border);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links li a {
    display: block;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border);
  }

  .nav-toggle {
    display: block;
  }

  .category-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.8rem;
  }

  .gallery-grid {
    columns: 1;
  }

  .featured,
  .gallery-section,
  .about-section,
  .contact-section {
    padding-left: 1.2rem;
    padding-right: 1.2rem;
  }

  .lightbox-prev { left: 0.5rem; }
  .lightbox-next { right: 0.5rem; }
}