/* ========================================
   photogra.ca - Artistic Photography Portfolio
   Dark Minimalist Design
   ======================================== */

/* ===== CSS Variables ===== */
:root {
  --color-bg: #0a0a0a;
  --color-bg-secondary: #151515;
  --color-text: #ffffff;
  --color-text-muted: #a0a0a0;
  --color-accent: #ffffff;
  --color-border: #2a2a2a;

  --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-heading: 'Playfair Display', Georgia, serif;

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;

  --transition-speed: 0.3s;
  --max-width: 1400px;
}

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

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

body {
  font-family: var(--font-primary);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
  opacity: 0.7;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
  letter-spacing: 0.02em;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: var(--spacing-md);
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-muted);
}

/* ===== Header & Navigation ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-sm) 0;
}

.header-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  letter-spacing: 0.1em;
  text-transform: lowercase;
}

.main-nav ul {
  display: flex;
  gap: var(--spacing-md);
  list-style: none;
}

.main-nav a {
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 300;
}

/* Mobile Navigation Toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 1.5rem;
  cursor: pointer;
  padding: var(--spacing-xs);
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .main-nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-md);
    transform: translateY(-100%);
    opacity: 0;
    transition: transform var(--transition-speed) ease, opacity var(--transition-speed) ease;
    pointer-events: none;
  }

  .main-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .main-nav ul {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
}

/* ===== Main Content ===== */
main {
  margin-top: 70px;
  min-height: calc(100vh - 70px);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-xl) 0;
}

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

.hero-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.6;
}

.hero-content {
  position: relative;
  z-index: 10;
  text-align: center;
  padding: var(--spacing-md);
}

.hero-title {
  font-size: clamp(3rem, 8vw, 6rem);
  margin-bottom: var(--spacing-md);
  animation: fadeInUp 1s ease;
}

.hero-subtitle {
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  color: var(--color-text-muted);
  font-weight: 300;
  letter-spacing: 0.1em;
  animation: fadeInUp 1s ease 0.2s both;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== Grid Layouts ===== */
.grid {
  display: grid;
  gap: var(--spacing-md);
  margin: var(--spacing-lg) 0;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-masonry {
  columns: 3;
  column-gap: var(--spacing-md);
}

.grid-masonry .grid-item {
  break-inside: avoid;
  margin-bottom: var(--spacing-md);
}

@media (max-width: 1024px) {
  .grid-masonry {
    columns: 2;
  }
}

@media (max-width: 640px) {
  .grid-masonry {
    columns: 1;
  }
}

/* ===== Card Component ===== */
.card {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: transform var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

.card:hover {
  transform: translateY(-5px);
  border-color: var(--color-accent);
}

.card-image {
  width: 100%;
  height: auto;
  aspect-ratio: 3/2;
  object-fit: cover;
}

.card-content {
  padding: var(--spacing-md);
}

.card-title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-xs);
}

.card-description {
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ===== Button Styles ===== */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-text);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--transition-speed) ease;
}

.btn:hover {
  background-color: var(--color-text);
  color: var(--color-bg);
  opacity: 1;
}

.btn-primary {
  background-color: var(--color-text);
  color: var(--color-bg);
}

.btn-primary:hover {
  background-color: transparent;
  color: var(--color-text);
}

/* ===== Form Styles ===== */
.form-group {
  margin-bottom: var(--spacing-md);
}

label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

input[type="text"],
input[type="email"],
textarea {
  width: 100%;
  padding: var(--spacing-sm);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-family: var(--font-primary);
  font-size: 1rem;
  transition: border-color var(--transition-speed) ease;
}

input:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

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

/* ===== Footer ===== */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-lg) 0 var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.footer-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.footer-links {
  display: flex;
  gap: var(--spacing-md);
  list-style: none;
}

.footer-text {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

@media (max-width: 640px) {
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}

/* ===== Utility Classes ===== */
.text-center {
  text-align: center;
}

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.py-sm { padding-top: var(--spacing-sm); padding-bottom: var(--spacing-sm); }
.py-md { padding-top: var(--spacing-md); padding-bottom: var(--spacing-md); }
.py-lg { padding-top: var(--spacing-lg); padding-bottom: var(--spacing-lg); }

/* ===== Loading Animation ===== */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-text);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ===== Responsive Images ===== */
picture {
  display: block;
}

.responsive-image {
  width: 100%;
  height: auto;
}

/* ===== Accessibility ===== */
.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;
}

/* Focus styles for keyboard navigation */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
}

/* Remove default outline for mouse users */
:focus:not(:focus-visible) {
  outline: none;
}

/* ===== Utility Classes ===== */
/* Section backgrounds */
.section-secondary {
  background-color: var(--color-bg-secondary);
}

/* Content width containers */
.content-narrow {
  max-width: 600px;
  margin: 0 auto;
}

.content-medium {
  max-width: 800px;
  margin: 0 auto;
}

.content-wide {
  max-width: 900px;
  margin: 0 auto;
}

/* Flexbox utilities */
.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.flex-center {
  display: flex;
  justify-content: center;
  align-items: center;
}

.flex-gap {
  gap: var(--spacing-md);
}

.flex-gap-sm {
  gap: var(--spacing-sm);
}

.flex-gap-lg {
  gap: var(--spacing-lg);
}