/*
 * Deep Technical — Underwater Photography
 * A refined, deliberate aesthetic inspired by fine-line illustration,
 * technical precision, and the depths of the ocean.
 */

/* ============================================
   Font Import — Clean, technical typefaces
   ============================================ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Cormorant+Garamond:ital,wght@0,400;0,500;1,400&display=swap');

/* ============================================
   CSS Variables — Ink & Silver Palette
   ============================================ */
:root {
  /* Deep ink backgrounds */
  --ink-black: #08090c;
  --ink-deep: #0d1117;
  --ink-mid: #151b23;
  --ink-light: #1e252f;

  /* Silver accents */
  --silver: #8b949e;
  --silver-bright: #c9d1d9;
  --platinum: #e6edf3;

  /* Subtle ocean undertones */
  --ocean-whisper: rgba(56, 139, 172, 0.08);
  --ocean-hint: #388bac;
  --ocean-glow: rgba(56, 139, 172, 0.15);

  /* Functional */
  --white: #ffffff;
  --border: rgba(139, 148, 158, 0.15);
  --border-hover: rgba(139, 148, 158, 0.3);
  --overlay: rgba(8, 9, 12, 0.95);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Cormorant Garamond', Georgia, serif;

  /* Spacing scale */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 4rem;
  --space-2xl: 8rem;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--ink-black);
  color: var(--silver-bright);
  line-height: 1.7;
  min-height: 100vh;
  font-weight: 300;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: var(--ocean-hint);
  color: var(--white);
}

/* ============================================
   Typography — Editorial precision
   ============================================ */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.2;
  color: var(--platinum);
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 400;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
}

h3 {
  font-size: 1.25rem;
  font-family: var(--font-sans);
  font-weight: 500;
  letter-spacing: 0.02em;
}

h4 {
  font-size: 0.875rem;
  font-family: var(--font-sans);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--silver);
}

p {
  margin-bottom: var(--space-md);
  color: var(--silver);
}

a {
  color: var(--silver-bright);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--ocean-hint);
}

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

/* ============================================
   Layout
   ============================================ */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

section {
  padding: var(--space-2xl) 0;
}

/* ============================================
   Header & Navigation — Minimal, precise
   ============================================ */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-lg) 0;
  transition: all 0.3s ease;
}

header.scrolled {
  background: rgba(8, 9, 12, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.logo {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--platinum);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.logo-icon {
  display: none;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--space-xl);
}

.nav-links a {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--silver);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  padding: var(--space-sm) 0;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--ocean-hint);
  transition: width 0.3s ease;
}

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

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* Mobile Menu */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  padding: var(--space-sm);
  background: none;
  border: none;
}

.menu-toggle span {
  width: 20px;
  height: 1px;
  background: var(--platinum);
  transition: 0.3s ease;
}

/* ============================================
   Hero — Dramatic, considered
   ============================================ */
.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  background: var(--ink-black);
  overflow: hidden;
}

/* Subtle grid pattern overlay */
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 100px 100px;
  opacity: 0.3;
}

/* Radial glow */
.hero::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--ocean-whisper) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  padding: var(--space-lg);
}

.hero h1 {
  margin-bottom: var(--space-lg);
  font-style: italic;
}

.hero p {
  font-size: 1.125rem;
  color: var(--silver);
  margin-bottom: var(--space-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.8;
}

.hero-subtitle {
  font-family: var(--font-sans);
  color: var(--ocean-hint);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  margin-bottom: var(--space-lg);
  font-weight: 500;
}

/* ============================================
   Buttons — Refined, minimal
   ============================================ */
.btn {
  display: inline-block;
  padding: 0.875rem 2.5rem;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  cursor: pointer;
  transition: all 0.3s ease;
  border: 1px solid var(--border-hover);
  background: transparent;
  color: var(--platinum);
}

.btn:hover {
  border-color: var(--ocean-hint);
  color: var(--ocean-hint);
}

.btn-primary {
  background: transparent;
  border-color: var(--platinum);
}

.btn-primary:hover {
  background: var(--platinum);
  color: var(--ink-black);
}

.btn-outline {
  background: transparent;
}

/* ============================================
   Section Headers
   ============================================ */
.section-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section-header h2 {
  margin-bottom: var(--space-md);
}

.section-header p {
  max-width: 500px;
  margin: 0 auto;
  font-size: 0.95rem;
}

/* Fine line separator */
.section-header::after {
  content: '';
  display: block;
  width: 60px;
  height: 1px;
  background: var(--border-hover);
  margin: var(--space-lg) auto 0;
}

/* ============================================
   Photo Gallery — Clean grid
   ============================================ */
.gallery-filters {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.5rem 1.25rem;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--silver);
  font-family: var(--font-sans);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  cursor: pointer;
  transition: all 0.3s ease;
}

.filter-btn:hover,
.filter-btn.active {
  border-color: var(--platinum);
  color: var(--platinum);
}

.gallery-grid,
.featured-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 1px;
  background: var(--border);
}

/* ============================================
   Photo Card — Gallery aesthetic
   ============================================ */
.photo-card {
  position: relative;
  aspect-ratio: 4/3;
  background: var(--ink-deep);
  cursor: pointer;
  overflow: hidden;
}

.photo-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease, opacity 0.3s ease;
  opacity: 0.9;
}

.photo-card:hover img {
  transform: scale(1.02);
  opacity: 1;
}

.photo-card-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-lg);
  background: linear-gradient(transparent, var(--overlay));
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.3s ease;
}

.photo-card:hover .photo-card-overlay {
  opacity: 1;
  transform: translateY(0);
}

.photo-card-overlay h3 {
  color: var(--platinum);
  margin-bottom: var(--space-xs);
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 400;
}

.photo-card-overlay .category {
  color: var(--ocean-hint);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
}

/* ============================================
   Modal — Lightbox style
   ============================================ */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
}

.modal.active {
  display: block;
}

.modal-content {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.modal-image {
  position: relative;
  max-width: calc(100% - 380px);
  max-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
}

.modal-image img {
  max-width: 100%;
  max-height: 90vh;
  width: auto;
  height: auto;
  object-fit: contain;
  box-shadow: 0 25px 80px rgba(0, 0, 0, 0.6);
}

.modal-details {
  position: fixed;
  top: 0;
  right: 0;
  width: 340px;
  height: 100vh;
  background: var(--ink-deep);
  border-left: 1px solid var(--border);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.modal-close {
  position: fixed;
  top: var(--space-lg);
  left: var(--space-lg);
  width: 44px;
  height: 44px;
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid var(--border);
  color: var(--silver);
  font-size: 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  z-index: 10;
}

.modal-close:hover {
  background: var(--ink-deep);
  border-color: var(--platinum);
  color: var(--platinum);
}

.modal-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
  margin-top: var(--space-xl);
}

.modal-category {
  color: var(--ocean-hint);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: var(--space-lg);
}

.modal-description {
  color: var(--silver);
  font-size: 0.875rem;
  line-height: 1.8;
  margin-bottom: var(--space-lg);
}

/* ============================================
   Purchase Options
   ============================================ */
.purchase-options {
  border-top: 1px solid var(--border);
  padding-top: var(--space-lg);
}

.purchase-options h4 {
  margin-bottom: var(--space-md);
}

.option-group {
  margin-bottom: var(--space-md);
}

.option-group label {
  display: block;
  color: var(--silver);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-sm);
}

.option-select {
  width: 100%;
  padding: 0.75rem;
  background: var(--ink-mid);
  border: 1px solid var(--border);
  color: var(--silver-bright);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  cursor: pointer;
  transition: border-color 0.2s ease;
}

.option-select:focus {
  outline: none;
  border-color: var(--ocean-hint);
}

.price-display {
  font-family: var(--font-sans);
  font-size: 1.5rem;
  color: var(--platinum);
  font-weight: 300;
  margin-bottom: var(--space-md);
  letter-spacing: 0.05em;
}

.btn-buy {
  width: 100%;
  padding: 1rem;
}

/* ============================================
   About Section
   ============================================ */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.about-image {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
}

.about-image::after {
  content: '';
  position: absolute;
  top: var(--space-md);
  left: var(--space-md);
  right: calc(var(--space-md) * -1);
  bottom: calc(var(--space-md) * -1);
  border: 1px solid var(--border);
  pointer-events: none;
}

.about-text h2 {
  margin-bottom: var(--space-lg);
}

.about-text p {
  font-size: 0.95rem;
  line-height: 1.9;
}

/* ============================================
   Contact
   ============================================ */
.contact-container {
  max-width: 550px;
  margin: 0 auto;
}

.contact-form {
  background: var(--ink-deep);
  padding: var(--space-xl);
  border: 1px solid var(--border);
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  margin-bottom: var(--space-sm);
  color: var(--silver);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.875rem;
  background: var(--ink-mid);
  border: 1px solid var(--border);
  color: var(--silver-bright);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--ocean-hint);
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

/* ============================================
   Footer — Minimal
   ============================================ */
footer {
  border-top: 1px solid var(--border);
  padding: var(--space-xl) 0;
  margin-top: var(--space-xl);
}

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

.footer-links {
  display: flex;
  gap: var(--space-xl);
}

.footer-links a {
  color: var(--silver);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

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

.social-links {
  display: flex;
  gap: var(--space-sm);
}

.social-links a {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--silver);
  font-size: 0.875rem;
  transition: all 0.2s ease;
}

.social-links a:hover {
  border-color: var(--platinum);
  color: var(--platinum);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--space-xl);
  margin-top: var(--space-xl);
  border-top: 1px solid var(--border);
  color: var(--silver);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

/* ============================================
   Page Header (inner pages)
   ============================================ */
.page-header {
  padding: 10rem 0 var(--space-xl);
  text-align: center;
  position: relative;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 100px 100px;
  opacity: 0.2;
}

.page-header h1 {
  position: relative;
  margin-bottom: var(--space-md);
  font-style: italic;
}

.page-header p {
  position: relative;
  color: var(--silver);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 968px) {
  .modal-content {
    flex-direction: column;
  }

  .modal-image {
    max-width: 100%;
    padding: var(--space-lg);
    padding-top: 80px;
  }

  .modal-image img {
    max-height: 50vh;
  }

  .modal-details {
    position: relative;
    width: 100%;
    height: auto;
    border-left: none;
    border-top: 1px solid var(--border);
  }

  .modal-title {
    margin-top: 0;
  }

  .about-content {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .about-image::after {
    display: none;
  }
}

@media (max-width: 768px) {
  :root {
    --space-lg: 1.5rem;
    --space-xl: 3rem;
    --space-2xl: 5rem;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background: var(--ink-black);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--space-xl);
    transition: right 0.3s ease;
  }

  .nav-links.active {
    right: 0;
  }

  .nav-links a {
    font-size: 0.9rem;
  }

  .menu-toggle {
    display: flex;
    z-index: 1001;
  }

  .gallery-grid,
  .featured-grid {
    grid-template-columns: 1fr;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}

/* ============================================
   Animations — Subtle, deliberate
   ============================================ */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease forwards;
}

/* Initial state for elements that will animate */
.photo-card {
  opacity: 0;
  transform: translateY(20px);
}

.slide-up {
  animation: slideUp 0.6s ease forwards;
}

/* ============================================
   Utility Classes
   ============================================ */
.text-center { text-align: center; }
.mt-1 { margin-top: var(--space-sm); }
.mt-2 { margin-top: var(--space-md); }
.mt-3 { margin-top: var(--space-lg); }
.mb-1 { margin-bottom: var(--space-sm); }
.mb-2 { margin-bottom: var(--space-md); }
.mb-3 { margin-bottom: var(--space-lg); }