/* ==========================================================================
   INTERVIU.ONLINE — Editorial Architectural Portfolio & Heritage Archive
   Curadoria & Arquitetura: Ítalo Carvalho (Ítalo B. C. Silva)
   Responsive Mobile-First & Blueprint Grid System (390px -> 1440px+)
   ========================================================================== */

:root {
  --bg-primary: #0d0f12;
  --bg-secondary: #13161b;
  --bg-card: #181c22;
  --bg-card-hover: #1e232b;
  --bg-glass: rgba(13, 15, 18, 0.88);
  --text-primary: #f3efe6;
  --text-secondary: #b8b2a6;
  --text-muted: #7e796f;
  --accent-corten: #d48846;
  --accent-corten-soft: rgba(212, 136, 70, 0.14);
  --accent-blueprint: #6495bf;
  --accent-emerald: #529471;
  --border-subtle: rgba(243, 239, 230, 0.1);
  --border-strong: rgba(243, 239, 230, 0.22);
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.55);
  --radius-sm: 4px;
  --radius-md: 8px;
  --font-sans: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-serif: 'Georgia', 'Times New Roman', serif;
  --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  --container-max: 1320px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  background-image:
    linear-gradient(to right, rgba(243, 239, 230, 0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(243, 239, 230, 0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease;
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

@media (min-width: 768px) {
  .container {
    padding: 0 40px;
  }
}

/* Technical Badges & Labels */
.tech-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 5px 12px;
  border: 1px solid rgba(247, 167, 89, 0.45);
  border-radius: var(--radius-sm);
  color: #fca758;
  background: rgba(212, 136, 70, 0.22);
}

.section-kicker {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent-corten);
  margin-bottom: 8px;
  display: block;
}

.section-title {
  font-size: clamp(1.65rem, 3vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 14px;
}

.section-desc {
  color: var(--text-secondary);
  max-width: 68ch;
  font-size: 1rem;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-glass);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 16px;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-mark {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.brand-square {
  width: 12px;
  height: 12px;
  background: var(--accent-corten);
  display: inline-block;
  border: 1px solid var(--text-primary);
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.main-nav {
  display: none;
  align-items: center;
  gap: 28px;
}

.main-nav a {
  font-size: 0.88rem;
  color: var(--text-secondary);
  font-weight: 500;
  letter-spacing: 0.02em;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--accent-corten);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-coord {
  display: none;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  padding: 4px 10px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
}

.mobile-menu-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

@media (min-width: 960px) {
  .main-nav {
    display: flex;
  }
  .header-coord {
    display: inline-block;
  }
  .mobile-menu-btn {
    display: none;
  }
}

.mobile-drawer {
  display: none;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-strong);
  padding: 16px 20px 24px;
}

.mobile-drawer.open {
  display: block;
}

.mobile-drawer nav {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.mobile-drawer nav a {
  font-size: 0.95rem;
  padding: 8px 0;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-primary);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  padding: 44px 0 60px;
  border-bottom: 1px solid var(--border-subtle);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: center;
}

@media (min-width: 992px) {
  .hero {
    padding: 72px 0 84px;
  }
  .hero-grid {
    grid-template-columns: 1.08fr 0.92fr;
    gap: 48px;
  }
}

.hero-title {
  font-size: clamp(2rem, 4.2vw, 3.35rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.025em;
  margin: 16px 0 20px;
}

.hero-title span {
  color: var(--accent-corten);
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
}

.hero-lead {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
  max-width: 60ch;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 36px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent-corten);
  color: #0d0f12;
  border-color: var(--accent-corten);
}

.btn-primary:hover {
  background: #e29652;
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.btn-outline:hover {
  border-color: var(--accent-corten);
  color: var(--accent-corten);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

@media (min-width: 540px) {
  .hero-stats {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
}

.stat-label {
  font-size: 0.76rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero-visual {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.hero-visual-frame {
  position: relative;
  aspect-ratio: 16 / 10;
  background: #10141a;
  overflow: hidden;
}

.hero-visual-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-visual-caption {
  padding: 14px 18px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   Filter Bar & Portfolio Grid
   ========================================================================== */
.portfolio-section {
  padding: 64px 0 80px;
  border-bottom: 1px solid var(--border-subtle);
}

.portfolio-controls {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 28px 0 36px;
  padding: 18px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

@media (min-width: 900px) {
  .portfolio-controls {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s ease;
}

.filter-btn:hover {
  border-color: var(--border-strong);
  color: var(--text-primary);
}

.filter-btn.active {
  background: var(--accent-corten);
  color: #0d0f12;
  border-color: var(--accent-corten);
  font-weight: 600;
}

.filter-count {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  opacity: 0.85;
  padding: 1px 6px;
  border-radius: 3px;
  background: rgba(0, 0, 0, 0.2);
}

.search-box {
  position: relative;
  width: 100%;
  max-width: 340px;
}

.search-input {
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 9px 14px;
  font-size: 0.86rem;
  color: var(--text-primary);
}

.search-input:focus {
  outline: none;
  border-color: var(--accent-corten);
}

.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

@media (min-width: 680px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1080px) {
  .projects-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.22s ease, border-color 0.22s ease, background 0.22s ease;
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-corten);
  background: var(--bg-card-hover);
}

.project-thumb-wrap {
  position: relative;
  aspect-ratio: 16 / 10;
  background: #101419;
  border-bottom: 1px solid var(--border-subtle);
  overflow: hidden;
}

.project-thumb-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.project-card:hover .project-thumb-wrap img {
  transform: scale(1.03);
}

.project-code-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(13, 15, 18, 0.86);
  border: 1px solid var(--border-strong);
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-corten);
  border-radius: var(--radius-sm);
}

.project-cat-badge {
  position: absolute;
  bottom: 12px;
  right: 12px;
  background: rgba(13, 15, 18, 0.88);
  border: 1px solid var(--border-subtle);
  padding: 3px 9px;
  font-size: 0.72rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
}

.project-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.project-meta-top {
  font-family: var(--font-mono);
  font-size: 0.73rem;
  color: var(--text-muted);
  margin-bottom: 6px;
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

.project-title {
  font-size: 1.16rem;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.project-subtitle {
  font-size: 0.84rem;
  color: var(--accent-corten);
  margin-bottom: 12px;
  font-weight: 500;
}

.project-summary {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
  flex: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.project-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 2px 7px;
  background: rgba(243, 239, 230, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: 3px;
  color: var(--text-secondary);
}

.project-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
}

.btn-card {
  background: transparent;
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  padding: 7px 12px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-card:hover {
  background: var(--accent-corten);
  color: #0d0f12;
  border-color: var(--accent-corten);
}

.project-link-direct {
  font-family: var(--font-mono);
  font-size: 0.73rem;
  color: var(--text-muted);
}

.project-link-direct:hover {
  color: var(--accent-corten);
}

/* ==========================================================================
   Methodology & Heritage Matrix Section
   ========================================================================== */
.matrix-section {
  padding: 68px 0;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-subtle);
}

.matrix-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 32px;
}

@media (min-width: 768px) {
  .matrix-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1100px) {
  .matrix-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.matrix-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  padding: 22px;
  border-radius: var(--radius-md);
}

.matrix-num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-corten);
  margin-bottom: 8px;
  display: block;
}

.matrix-card h3 {
  font-size: 1.05rem;
  margin-bottom: 10px;
}

.matrix-card p {
  font-size: 0.87rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.matrix-ref {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Studio Profile & Contact Section
   ========================================================================== */
.studio-section {
  padding: 68px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.studio-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}

@media (min-width: 900px) {
  .studio-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
  }
}

.studio-pillars {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 24px;
}

@media (min-width: 560px) {
  .studio-pillars {
    grid-template-columns: repeat(2, 1fr);
  }
}

.pillar-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  padding: 16px;
  border-radius: var(--radius-sm);
}

.pillar-box h4 {
  font-size: 0.92rem;
  color: var(--accent-corten);
  margin-bottom: 6px;
}

.pillar-box p {
  font-size: 0.83rem;
  color: var(--text-secondary);
}

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  padding: 28px;
  border-radius: var(--radius-md);
}

.contact-card h3 {
  font-size: 1.25rem;
  margin-bottom: 8px;
}

.contact-card > p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.form-group {
  margin-bottom: 14px;
}

.form-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-corten);
}

.form-feedback {
  margin-top: 12px;
  font-size: 0.84rem;
  color: var(--accent-emerald);
  display: none;
}

.form-feedback.visible {
  display: block;
}

/* ==========================================================================
   Modal Viewer for Project Details & Study Galleries
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(8, 10, 13, 0.88);
  backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
  overflow-y: auto;
}

.modal-backdrop.open {
  display: flex;
}

.modal-dialog {
  background: var(--bg-secondary);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  width: 100%;
  max-width: 1120px;
  max-height: 92vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

.modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  background: var(--bg-secondary);
  z-index: 10;
}

.modal-close {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  cursor: pointer;
}

.modal-body {
  padding: 24px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

@media (min-width: 920px) {
  .modal-body {
    grid-template-columns: 1.25fr 0.75fr;
  }
}

.gallery-stage {
  background: #0b0d10;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.gallery-main-view {
  aspect-ratio: 16 / 10;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0d1014;
}

.gallery-main-view img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.gallery-bar {
  padding: 12px 16px;
  background: var(--bg-card);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.82rem;
}

.gallery-thumbs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-top: 12px;
}

.gallery-thumb-btn {
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg-card);
  cursor: pointer;
  aspect-ratio: 16 / 10;
  padding: 0;
}

.gallery-thumb-btn.active {
  border-color: var(--accent-corten);
}

.gallery-thumb-btn img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.spec-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin: 16px 0;
}

.spec-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  padding: 10px 12px;
  border-radius: var(--radius-sm);
}

.spec-box span {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.spec-box strong {
  font-size: 0.85rem;
  color: var(--text-primary);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  padding: 40px 0;
  background: #090b0d;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.84rem;
  color: var(--text-muted);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 16px;
  justify-content: space-between;
}

@media (min-width: 768px) {
  .footer-inner {
    flex-direction: row;
    align-items: center;
  }
}

.footer-credit a {
  color: var(--text-secondary);
  border-bottom: 1px dotted var(--border-strong);
}

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