/* ==========================================================================
   ALMIR.SITE — Engineering & IT Journal
   Classic High-End Editorial & Lab Workbench Design System
   ========================================================================== */

:root {
  /* Palette: Matte Obsidian, Industrial Warm Gray & Titanium */
  --bg-primary: #0a0b0d;
  --bg-secondary: #111215;
  --bg-tertiary: #17191d;
  --bg-elevated: #1e2026;
  --bg-hover: #262930;

  /* Borders & Dividers: Ultra-fine, subtle, sophisticated */
  --border-light: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.14);
  --border-subtle: #20232a;

  /* Typography Colors */
  --text-primary: #f4f4f5;
  --text-secondary: #a1a1aa;
  --text-tertiary: #71717a;
  --text-dim: #52525b;

  /* Professional Accents: Muted Industrial Amber & Engineering Steel */
  --accent-amber: #e59500;
  --accent-amber-subtle: rgba(229, 149, 0, 0.12);
  --accent-blue: #3b82f6;
  --accent-emerald: #10b981;
  --accent-emerald-subtle: rgba(16, 185, 129, 0.12);

  /* Typography Stacks */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-serif: 'Newsreader', Georgia, serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Menlo, Consolas, monospace;

  /* Geometry */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Transitions */
  --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-base: 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::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);
  color-scheme: dark;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Subtle architectural dot grid */
.page-background {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
}

.page-ambient-vignette {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  background: radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.02), transparent 70%);
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 32px;
  position: relative;
  z-index: 2;
}

/* ==========================================================================
   TOP SYSTEM BAR & STATUS
   ========================================================================== */
.top-system-bar {
  border-bottom: 1px solid var(--border-light);
  background: rgba(10, 11, 13, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  font-size: 0.78rem;
  font-family: var(--font-mono);
  color: var(--text-tertiary);
  position: sticky;
  top: 0;
  z-index: 100;
}

.system-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 42px;
}

.system-status-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-emerald);
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.6);
}

.system-metrics {
  display: flex;
  align-items: center;
  gap: 24px;
}

.metric-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.metric-value {
  color: var(--text-secondary);
}

/* ==========================================================================
   NAVIGATION
   ========================================================================== */
.site-nav-header {
  padding: 28px 0;
  border-bottom: 1px solid var(--border-light);
}

.nav-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand-block {
  display: flex;
  align-items: baseline;
  gap: 12px;
  text-decoration: none;
  color: inherit;
}

.brand-title {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: #fff;
}

.brand-subtitle {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.main-navigation {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-item {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.nav-item:hover, .nav-item.active {
  color: #fff;
}

.nav-contact-btn {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  color: #fff;
  background: var(--bg-secondary);
  border: 1px solid var(--border-medium);
  padding: 7px 16px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.nav-contact-btn:hover {
  background: var(--bg-hover);
  border-color: rgba(255, 255, 255, 0.3);
}

/* ==========================================================================
   HERO EDITORIAL HEADER
   ========================================================================== */
.hero-editorial-section {
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--border-light);
}

.editorial-header-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.editorial-badge {
  background: var(--accent-amber-subtle);
  color: var(--accent-amber);
  border: 1px solid rgba(229, 149, 0, 0.25);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.editorial-headline {
  font-size: 3.2rem;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.035em;
  color: #ffffff;
  max-width: 980px;
  margin-bottom: 24px;
}

.editorial-lead {
  font-size: 1.25rem;
  line-height: 1.65;
  color: var(--text-secondary);
  max-width: 820px;
  margin-bottom: 40px;
}

.hero-stats-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding-top: 32px;
  border-top: 1px solid var(--border-light);
}

.stat-block {
  display: flex;
  flex-direction: column;
}

.stat-figure {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.75rem;
  color: #fff;
  letter-spacing: -0.02em;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-tertiary);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ==========================================================================
   CATEGORY MATRIX TABS (4 Key Pillars)
   ========================================================================== */
.matrix-filter-section {
  padding: 36px 0 24px;
  position: sticky;
  top: 42px;
  z-index: 80;
  background: rgba(10, 11, 13, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-light);
}

.matrix-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.pillar-tabs {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-secondary);
  padding: 4px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
}

.pillar-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all var(--transition-fast);
}

.pillar-btn:hover {
  color: #fff;
}

.pillar-btn.active {
  background: var(--bg-elevated);
  color: #fff;
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

.pillar-count {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  padding: 1px 6px;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.06);
}

.pillar-btn.active .pillar-count {
  color: #fff;
  background: rgba(255, 255, 255, 0.15);
}

.search-and-tag-bar {
  display: flex;
  align-items: center;
  gap: 12px;
}

.search-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  color: #fff;
  font-size: 0.85rem;
  width: 240px;
  outline: none;
  transition: border-color var(--transition-fast);
}

.search-box:focus {
  border-color: var(--border-medium);
}

/* ==========================================================================
   JOURNAL ARTICLES GRID (Classic Editorial Layout)
   ========================================================================== */
.journal-section {
  padding: 48px 0 80px;
}

.journal-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

/* Featured Lead Story (Spans 2 columns) */
.article-lead {
  grid-column: span 2;
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-base), transform var(--transition-base);
  text-decoration: none;
  color: inherit;
}

.article-lead:hover {
  border-color: var(--border-medium);
  transform: translateY(-2px);
}

.article-lead .media-wrap {
  height: 100%;
  min-height: 380px;
  background: #14161a;
  overflow: hidden;
  position: relative;
}

.article-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: contrast(1.05);
  transition: transform 0.5s ease;
}

.article-lead:hover .article-img,
.article-card:hover .article-img {
  transform: scale(1.03);
}

.article-lead-content {
  padding: 36px;
  display: flex;
  flex-direction: column;
}

/* Standard Article Card */
.article-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition-base), transform var(--transition-base);
  text-decoration: none;
  color: inherit;
}

.article-card:hover {
  border-color: var(--border-medium);
  transform: translateY(-2px);
}

.card-media {
  position: relative;
  height: 220px;
  overflow: hidden;
  background: #14161a;
}

.card-content {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

/* Article Typography & Metadata */
.article-meta-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
}

.status-chip.doing {
  background: var(--accent-amber-subtle);
  color: var(--accent-amber);
  border: 1px solid rgba(229, 149, 0, 0.25);
}

.status-chip.done {
  background: var(--accent-emerald-subtle);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.status-chip.plan {
  background: rgba(59, 130, 246, 0.12);
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.25);
}

.status-chip.did {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
  border: 1px solid var(--border-light);
}

.article-title {
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.015em;
  color: #fff;
  margin-bottom: 12px;
}

.article-lead .article-title {
  font-size: 1.75rem;
  line-height: 1.25;
  letter-spacing: -0.025em;
}

.article-excerpt {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

/* Technical Specification Strip inside Cards */
.tech-spec-table {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  margin-bottom: 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.tech-spec-label {
  color: var(--text-dim);
}

.tech-spec-val {
  color: var(--text-primary);
  font-weight: 500;
}

/* Card Bottom Metadata */
.card-footer {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.tag-list {
  display: flex;
  gap: 6px;
}

.tag-item {
  color: var(--text-dim);
}

.read-link {
  color: #fff;
  display: flex;
  align-items: center;
  gap: 4px;
  font-weight: 500;
}

/* ==========================================================================
   BEFORE & AFTER SECTION (Refined Editorial Style)
   ========================================================================== */
.inspection-section {
  padding: 64px 0;
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
  background: var(--bg-secondary);
}

.inspection-header {
  margin-bottom: 32px;
}

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: #fff;
  margin-bottom: 12px;
}

.section-subtext {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 680px;
}

.comparison-wrapper {
  position: relative;
  width: 100%;
  height: 480px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-medium);
  user-select: none;
}

.comp-layer {
  position: absolute;
  inset: 0;
}

.comp-before {
  width: 50%;
  overflow: hidden;
  border-right: 1px solid #fff;
  z-index: 2;
}

.comp-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 1240px;
  height: 100%;
  object-fit: cover;
}

.comp-pill {
  position: absolute;
  bottom: 20px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  background: rgba(10, 11, 13, 0.85);
  border: 1px solid var(--border-medium);
  color: #fff;
  z-index: 10;
}

.comp-pill.before-pill {
  left: 20px;
}

.comp-pill.after-pill {
  right: 20px;
}

.comp-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  background: #ffffff;
  z-index: 20;
  cursor: ew-resize;
}

.comp-handle-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 1px solid #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}

/* ==========================================================================
   LABORATORY EQUIPMENT & BENCH (Refined Grid)
   ========================================================================== */
.arsenal-section {
  padding: 64px 0 80px;
}

.arsenal-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 36px;
}

.equipment-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px;
}

.equipment-model {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-amber);
  margin-bottom: 8px;
}

.equipment-name {
  font-size: 1.1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 8px;
}

.equipment-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* ==========================================================================
   FOOTER (Classic Clean Typography)
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--border-light);
  padding: 56px 0 40px;
  background: var(--bg-primary);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 48px;
  flex-wrap: wrap;
  gap: 32px;
}

.footer-brand-desc {
  max-width: 440px;
  font-size: 0.92rem;
  color: var(--text-tertiary);
  line-height: 1.6;
  margin-top: 12px;
}

.footer-columns {
  display: flex;
  gap: 64px;
}

.footer-column-title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.footer-link-group {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  transition: color var(--transition-fast);
}

.footer-nav-link:hover {
  color: #fff;
}

.footer-bottom-line {
  padding-top: 28px;
  border-top: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* Responsive */
@media (max-width: 1024px) {
  .editorial-headline { font-size: 2.6rem; }
  .article-lead { grid-column: span 1; grid-template-columns: 1fr; }
  .journal-grid { grid-template-columns: repeat(2, 1fr); }
  .arsenal-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .main-navigation { display: none; }
  .editorial-headline { font-size: 2.1rem; }
  .hero-stats-band { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .journal-grid { grid-template-columns: 1fr; }
  .arsenal-grid { grid-template-columns: 1fr; }
  .comparison-wrapper { height: 320px; }
  .matrix-toolbar { flex-direction: column; align-items: stretch; }
  .pillar-tabs { overflow-x: auto; }
}