/* ============================================
   QUASISM - Museum-Inspired Design System
   ============================================ */

/* Root Variables */
:root {
  --primary: #2C3E50;
  --primary-light: #34495E;
  --primary-darker: #1A252F;
  --accent-red: #E74C3C;
  --accent-orange: #F39C12;
  --accent-green: #27AE60;
  --bg-light: #F8F8F8;
  --bg-lighter: #F2F2F2;
  --text-secondary: #4A4A4A;
  --border-subtle: #E8E8E8;
  --white: #FFFFFF;
  --spacing-unit: 24px;
  --max-width: 1200px;
  --transition-smooth: all 0.3s ease;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Lato', 'Open Sans', sans-serif;
  color: var(--primary);
  background-color: var(--bg-light);
  line-height: 1.6;
  font-size: 16px;
}

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

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

/* Typography */
h1 {
  font-family: 'Montserrat', 'Raleway', sans-serif;
  font-size: 4rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-unit);
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: -0.5px;
}

h2 {
  font-family: 'Montserrat', 'Raleway', sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: calc(var(--spacing-unit) * 0.75);
  color: var(--primary);
  margin-top: calc(var(--spacing-unit) * 1.5);
}

h3 {
  font-family: 'Montserrat', 'Raleway', sans-serif;
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: calc(var(--spacing-unit) * 0.5);
  color: var(--primary);
}

p {
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: var(--spacing-unit);
  color: var(--primary);
}

ul, ol {
  margin-left: 2rem;
  margin-bottom: var(--spacing-unit);
}

li {
  margin-bottom: 0.75rem;
  color: var(--primary);
}

/* ============================================
   LAYOUT STRUCTURE
   ============================================ */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-unit);
}

.container-full {
  width: 100%;
}

.section {
  width: 100%;
  padding: calc(var(--spacing-unit) * 3) var(--spacing-unit);
  display: flex;
  align-items: center;
  justify-content: center;
}

.section-light {
  background-color: var(--bg-light);
}

.section-primary {
  background-color: var(--primary);
  color: var(--white);
}

.section-primary h1,
.section-primary h2,
.section-primary h3 {
  color: var(--white);
}

.section-primary p,
.section-primary li {
  color: var(--white);
}

.section-white {
  background-color: var(--white);
}

/* Grid System */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: calc(var(--spacing-unit) * 2);
  align-items: center;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-unit);
}

.grid-column-reverse {
  direction: rtl;
}

.grid-column-reverse > * {
  direction: ltr;
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */

header {
  background-color: var(--primary);
  color: var(--white);
  padding: var(--spacing-unit) 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

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

.logo {
  font-family: 'Montserrat', 'Raleway', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 1px;
}

nav ul {
  display: flex;
  list-style: none;
  gap: calc(var(--spacing-unit) * 1.5);
  margin: 0;
}

nav a {
  color: var(--white);
  font-weight: 500;
  position: relative;
  padding-bottom: 4px;
}

nav a:hover {
  color: var(--accent-orange);
}

nav a.active {
  color: var(--accent-orange);
  border-bottom: 2px solid var(--accent-orange);
}

/* ============================================
   FOOTER
   ============================================ */

footer {
  background-color: var(--primary-darker);
  color: var(--white);
  padding: calc(var(--spacing-unit) * 2) 0;
  margin-top: calc(var(--spacing-unit) * 4);
}

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

.footer-content {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-unit);
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.footer-section h3 {
  color: var(--white);
  margin-bottom: var(--spacing-unit);
}

.footer-section a {
  display: block;
  margin-bottom: 0.75rem;
  color: var(--bg-light);
  font-size: 0.95rem;
}

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

.footer-divider {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: var(--spacing-unit);
  text-align: center;
  font-size: 0.9rem;
  color: var(--bg-lighter);
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  background-color: var(--primary);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
}

.hero h1 {
  color: var(--white);
  font-size: 5rem;
  margin-bottom: var(--spacing-unit);
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero p {
  color: var(--white);
  font-size: 1.5rem;
  margin-bottom: calc(var(--spacing-unit) * 2);
  opacity: 0.95;
}

.hero-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
  z-index: 1;
}

/* ============================================
   CONTENT CARDS & EXHIBITS
   ============================================ */

.card {
  background-color: var(--white);
  border: 1px solid var(--border-subtle);
  padding: calc(var(--spacing-unit) * 1.5);
  transition: var(--transition-smooth);
}

.card:hover {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  transform: translateY(-4px);
}

.card h3 {
  margin-top: 0;
}

.exhibit {
  display: flex;
  gap: calc(var(--spacing-unit) * 2);
  align-items: center;
  margin-bottom: calc(var(--spacing-unit) * 4);
}

.exhibit-image {
  flex: 0 0 50%;
}

.exhibit-image img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 4px;
}

.exhibit-content {
  flex: 1;
}

.exhibit-reverse {
  flex-direction: row-reverse;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
  display: inline-block;
  padding: 12px 32px;
  background-color: var(--accent-red);
  color: var(--white);
  border: 2px solid var(--accent-red);
  border-radius: 4px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
  font-size: 1rem;
}

.btn:hover {
  background-color: transparent;
  color: var(--accent-red);
}

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

.btn-secondary:hover {
  background-color: var(--primary);
  color: var(--white);
}

.btn-large {
  padding: 16px 48px;
  font-size: 1.1rem;
}

/* ============================================
   FORMS
   ============================================ */

form {
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: var(--spacing-unit);
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--primary);
}

input,
textarea,
select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  font-family: inherit;
  font-size: 1rem;
  color: var(--primary);
  transition: var(--transition-smooth);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--accent-orange);
  box-shadow: 0 0 0 3px rgba(243, 156, 18, 0.1);
}

textarea {
  resize: vertical;
  min-height: 200px;
}

/* ============================================
   BLOG STYLES
   ============================================ */

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-unit);
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.blog-card {
  background-color: var(--white);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  overflow: hidden;
  transition: var(--transition-smooth);
}

.blog-card:hover {
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
  transform: translateY(-8px);
}

.blog-card-image {
  width: 100%;
  height: 250px;
  overflow: hidden;
}

.blog-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.blog-card-meta {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.blog-card h3 {
  margin-top: 0;
  margin-bottom: 0.75rem;
}

.blog-card p {
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.blog-card a {
  color: var(--accent-red);
  font-weight: 600;
}

/* ============================================
   IMAGES & MEDIA
   ============================================ */

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

.image-full {
  width: 100%;
  margin: var(--spacing-unit) 0;
}

.image-center {
  margin: var(--spacing-unit) auto;
  display: block;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1024px) {
  h1 {
    font-size: 3rem;
  }

  h2 {
    font-size: 2rem;
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
    gap: var(--spacing-unit);
  }

  .exhibit {
    flex-direction: column;
  }

  .exhibit-reverse {
    flex-direction: column;
  }

  .exhibit-image {
    flex: 1;
  }

  .footer-content {
    grid-template-columns: 1fr;
  }

  nav ul {
    gap: var(--spacing-unit);
  }

  .hero h1 {
    font-size: 3rem;
  }

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

@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  h3 {
    font-size: 1.25rem;
  }

  nav ul {
    display: none;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1.1rem;
  }

  .section {
    padding: calc(var(--spacing-unit) * 2) var(--spacing-unit);
  }

  .blog-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    height: 60vh;
  }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.mb-1 {
  margin-bottom: var(--spacing-unit);
}

.mb-2 {
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.mt-1 {
  margin-top: var(--spacing-unit);
}

.mt-2 {
  margin-top: calc(var(--spacing-unit) * 2);
}

.py-1 {
  padding-top: var(--spacing-unit);
  padding-bottom: var(--spacing-unit);
}

.py-2 {
  padding-top: calc(var(--spacing-unit) * 2);
  padding-bottom: calc(var(--spacing-unit) * 2);
}

.accent-red {
  color: var(--accent-red);
}

.accent-orange {
  color: var(--accent-orange);
}

.accent-green {
  color: var(--accent-green);
}

.divider {
  border-top: 2px solid var(--border-subtle);
  margin: calc(var(--spacing-unit) * 2) 0;
}

.hidden {
  display: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}