/* ============================================
   Projects Page Styles
   ============================================ */

:root {
  --c-dark: #111e11;
  --c-dark-mid: #1a2e1a;
  --c-forest: #2c4a2c;
  --c-light: #f5f2ed;
  --c-gray: #e8e4de;
  --c-sage: #a0d2aa;
  --c-text: #2c3e2c;
  --c-text-sub: #6b7c6b;
  --font-serif: 'Noto Serif SC', serif;
  --font-sans: 'Noto Sans SC', sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --section-px: clamp(1.5rem, 5vw, 4rem);
  --max-w: 1400px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--c-text);
  background: var(--c-light);
  -webkit-font-smoothing: antialiased;
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem var(--section-px);
  background: rgba(245, 242, 237, 0.85);
  backdrop-filter: blur(10px);
  transition: all 0.3s var(--ease);
}

.nav.scrolled {
  background: rgba(17, 30, 17, 0.95);
  backdrop-filter: blur(10px);
  padding: 1rem var(--section-px);
}

.nav-logo {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--c-sage);
  text-decoration: none;
  letter-spacing: 0.25em;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--c-text-main);
  text-decoration: none;
  transition: color 0.3s var(--ease);
}

.nav-links a:hover {
  color: var(--c-sage);
}

/* Page Header */
.page-header {
  padding: clamp(8rem, 15vw, 12rem) var(--section-px) clamp(4rem, 8vw, 6rem);
  text-align: center;
  background: var(--c-light);
}

.page-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 400;
  letter-spacing: 0.15em;
  margin-bottom: 1rem;
  color: var(--c-text);
}

.page-subtitle {
  font-size: clamp(0.85rem, 1.2vw, 1rem);
  color: var(--c-text-sub);
  letter-spacing: 0.05em;
}

/* Filter Section */
.filter-section {
  padding: 0 var(--section-px) clamp(3rem, 5vw, 4rem);
  background: var(--c-light);
  border-bottom: 1px solid var(--c-gray);
}

.filter-container {
  max-width: var(--max-w);
  margin: 0 auto;
}

/* Search Box */
.search-box {
  position: relative;
  max-width: 600px;
  margin: 0 auto clamp(2rem, 4vw, 3rem);
}

.search-input {
  width: 100%;
  padding: 1rem 1.5rem 1rem 3rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--c-text);
  background: white;
  border: 1px solid var(--c-gray);
  border-radius: 2px;
  outline: none;
  transition: all 0.3s var(--ease);
}

.search-input:focus {
  border-color: var(--c-sage);
  box-shadow: 0 0 0 3px rgba(160, 210, 170, 0.1);
}

.search-input::placeholder {
  color: var(--c-text-sub);
  opacity: 0.6;
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--c-text-sub);
  opacity: 0.5;
}

/* Filter Groups */
.filter-groups {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-width: 900px;
  margin: 0 auto;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.filter-label {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--c-text-sub);
  min-width: 3rem;
}

.filter-options {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.5rem 1rem;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--c-text-sub);
  background: transparent;
  border: 1px solid var(--c-gray);
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.3s var(--ease);
}

.filter-btn:hover {
  border-color: var(--c-sage);
  color: var(--c-sage);
}

.filter-btn.active {
  background: var(--c-sage);
  border-color: var(--c-sage);
  color: var(--c-dark);
}

/* Results Info */
.results-info {
  max-width: var(--max-w);
  margin: clamp(2rem, 3vw, 3rem) auto 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--c-text-sub);
}

.clear-btn {
  padding: 0.4rem 1rem;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: var(--c-text-sub);
  background: transparent;
  border: 1px solid var(--c-gray);
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.3s var(--ease);
}

.clear-btn:hover {
  border-color: var(--c-sage);
  color: var(--c-sage);
}

/* Projects Section */
.projects-section {
  padding: clamp(3rem, 5vw, 5rem) var(--section-px);
  background: var(--c-light);
  min-height: 60vh;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
  max-width: var(--max-w);
  margin: 0 auto;
}

/* Project Card */
.project-card {
  background: white;
  border: 1px solid var(--c-gray);
  border-radius: 2px;
  overflow: hidden;
  transition: all 0.4s var(--ease);
}

.project-card:hover {
  border-color: var(--c-sage);
  box-shadow: 0 8px 30px rgba(17, 30, 17, 0.08);
  transform: translateY(-4px);
}

.project-content {
  padding: clamp(1.2rem, 2vw, 1.8rem);
}

.project-number {
  display: block;
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-sage);
  margin-bottom: 0.8rem;
}

.project-highlight {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.8rem;
}

.project-location-highlight {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--c-text);
  letter-spacing: 0.05em;
}

.project-area-highlight {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--c-text);
  letter-spacing: 0.05em;
}

.project-name {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
  color: var(--c-text);
}

.project-title {
  font-size: 0.8rem;
  color: var(--c-text-sub);
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.project-meta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--c-gray);
}

.meta-item {
  font-size: 0.75rem;
  color: var(--c-text-sub);
  letter-spacing: 0.05em;
}

.project-tags {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.tag {
  padding: 0.3rem 0.8rem;
  font-size: 0.7rem;
  color: var(--c-sage);
  background: rgba(160, 210, 170, 0.1);
  border: 1px solid rgba(160, 210, 170, 0.3);
  border-radius: 2px;
  letter-spacing: 0.05em;
}

.project-desc {
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--c-text-sub);
  margin-bottom: 1.2rem;
}

.project-link {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--c-sage);
  text-decoration: none;
  letter-spacing: 0.05em;
  transition: all 0.3s var(--ease);
}

.project-link:hover {
  color: var(--c-dark);
  letter-spacing: 0.1em;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: clamp(4rem, 8vw, 6rem) var(--section-px);
  color: var(--c-text-sub);
}

.empty-state p {
  font-size: 1rem;
  margin-bottom: 1.5rem;
}

/* Footer */
.footer {
  background: var(--c-dark);
  color: rgba(255, 255, 255, 0.6);
  padding: clamp(3rem, 5vw, 4rem) var(--section-px) 2rem;
}

.footer-content {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.footer-brand {
  flex: 1;
  min-width: 200px;
}

.footer-logo-text {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--c-sage);
  letter-spacing: 0.25em;
  display: block;
  margin-bottom: 0.5rem;
}

.footer-tagline {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  opacity: 0.7;
}

.footer-links {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer-links a {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  letter-spacing: 0.1em;
  transition: color 0.3s var(--ease);
}

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

.footer-bottom {
  max-width: var(--max-w);
  margin: 0 auto;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  opacity: 0.5;
}

/* Responsive */
@media (max-width: 768px) {
  .nav {
    flex-wrap: wrap;
    padding: 1rem 1.5rem;
  }
  .nav-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
    width: 100%;
    justify-content: center;
    padding-top: 0.75rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    margin-top: 0.5rem;
  }
  .nav-links a {
    font-size: 0.8rem;
    padding: 0.25rem 0;
  }
  
  .filter-group {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .project-highlight {
    font-size: 1.3rem;
  }
  
  .project-highlight-area {
    font-size: 1.1rem;
  }
  
  .footer-content {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .filter-options {
    width: 100%;
  }
  
  .filter-btn {
    flex: 1;
    text-align: center;
  }
}