/* ==========================================================================
   EvoStackr - Design System & Stylesheet
   Palette: Strictly White Background, Black & Blue Elements/Text
   ========================================================================== */

:root {
  /* Backgrounds: Pure White & Subtle Off-White Surfaces */
  --bg-pure: #ffffff;
  --bg-surface: #f8fafc;
  --bg-surface-subtle: #f1f5f9;
  --bg-card: #ffffff;
  --bg-card-hover: #ffffff;

  /* Borders: Crisp Light Slate */
  --border-subtle: #e2e8f0;
  --border-medium: #cbd5e1;
  --border-blue: rgba(37, 99, 235, 0.25);
  --border-blue-hover: #2563eb;

  /* Text Colors: Crisp Black & Slate */
  --text-pure: #000000;
  --text-primary: #090d16;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-light: #94a3b8;

  /* Blue Brand Accents (for text, badges, buttons, icons, highlights) */
  --blue-primary: #2563eb;
  --blue-hover: #1d4ed8;
  --blue-light: #3b82f6;
  --blue-soft-bg: #eff6ff;
  --blue-soft-border: rgba(37, 99, 235, 0.22);
  --blue-shadow: rgba(37, 99, 235, 0.15);

  /* Typography */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Transitions & Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-pure);
  color: var(--text-secondary);
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-pure);
  color: var(--text-secondary);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* Background Layers: Clean White with Subtle Neutral Grid */
.ambient-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-color: #ffffff;
}

.ambient-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.45;
  background-size: 40px 40px;
  background-image: 
    linear-gradient(to right, rgba(226, 232, 240, 0.6) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(226, 232, 240, 0.6) 1px, transparent 1px);
}

.app-wrapper {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: transparent;
}

/* Container */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   Header & Navbar
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  cursor: pointer;
}

.brand-icon-box {
  width: 40px;
  height: 40px;
  background: #ffffff;
  border: 1.5px solid var(--blue-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 10px var(--blue-shadow);
  transition: var(--transition-normal);
}

.brand-logo:hover .brand-icon-box {
  transform: translateY(-2px);
  background: var(--blue-soft-bg);
  box-shadow: 0 4px 14px var(--blue-shadow);
}

.brand-text {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-pure);
}

.brand-text .highlight {
  color: var(--blue-primary);
  font-weight: 800;
}

.brand-tag {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background: var(--blue-soft-bg);
  border: 1px solid var(--blue-soft-border);
  color: var(--blue-primary);
  font-weight: 700;
  margin-left: 4px;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 9px 18px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-normal);
  text-decoration: none;
  border: 1px solid transparent;
  outline: none;
}

.btn-primary {
  background: var(--blue-primary);
  color: #ffffff;
  box-shadow: 0 2px 8px var(--blue-shadow);
  border-color: var(--blue-primary);
}

.btn-primary:hover {
  background: var(--blue-hover);
  border-color: var(--blue-hover);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
  transform: translateY(-1px);
}

.btn-secondary {
  background: #ffffff;
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.btn-secondary:hover {
  background: var(--bg-surface);
  border-color: var(--blue-primary);
  color: var(--blue-primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

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

.btn-ghost:hover {
  color: var(--blue-primary);
  background: var(--blue-soft-bg);
}

/* ==========================================================================
   Hero Section (Directory View)
   ========================================================================== */
.hero-section {
  padding: 56px 0 36px;
  border-bottom: 1px solid var(--border-subtle);
  background: #ffffff;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.hero-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--blue-soft-bg);
  border: 1px solid var(--blue-soft-border);
  border-radius: var(--radius-full);
  color: var(--blue-primary);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  width: fit-content;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--blue-primary);
  box-shadow: 0 0 6px var(--blue-primary);
  animation: pulse 2s infinite ease-in-out;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.1;
  color: var(--text-pure);
  letter-spacing: -0.03em;
}

.hero-title span.accent {
  color: var(--blue-primary);
  position: relative;
  display: inline-block;
}

.hero-desc {
  max-width: 680px;
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* Stats Counter Grid */
.stats-banner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 16px;
}

.stat-item {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  padding: 18px 20px;
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  gap: 4px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
  transition: var(--transition-normal);
}

.stat-item:hover {
  border-color: var(--blue-primary);
  box-shadow: 0 4px 12px var(--blue-shadow);
  transform: translateY(-2px);
}

.stat-value {
  font-family: var(--font-heading);
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--text-pure);
}

.stat-value span.blue {
  color: var(--blue-primary);
}

.stat-label {
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  font-weight: 600;
}

/* ==========================================================================
   Filter & Controls Bar
   ========================================================================== */
.controls-section {
  padding: 28px 0 20px;
  background: #ffffff;
}

.controls-bar {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.search-and-sort {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.search-box-wrapper {
  position: relative;
  flex: 1;
  min-width: 280px;
}

.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 12px 42px 12px 46px;
  background: #ffffff;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  color: var(--text-pure);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: var(--transition-normal);
  outline: none;
}

.search-input:focus {
  border-color: var(--blue-primary);
  box-shadow: 0 0 0 3px var(--blue-soft-border);
}

.search-clear-btn {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  display: none;
}

.search-clear-btn:hover {
  color: var(--text-pure);
}

.sort-select {
  padding: 12px 16px;
  background: #ffffff;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  outline: none;
  transition: var(--transition-normal);
}

.sort-select:focus, .sort-select:hover {
  border-color: var(--blue-primary);
  color: var(--text-pure);
}

/* Category Filter Chips */
.category-chips {
  display: flex;
  align-items: center;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: none;
}

.category-chips::-webkit-scrollbar {
  display: none;
}

.chip-btn {
  padding: 7px 16px;
  border-radius: var(--radius-full);
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition-normal);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
}

.chip-btn:hover {
  border-color: var(--blue-primary);
  color: var(--blue-primary);
  background: var(--blue-soft-bg);
}

.chip-btn.active {
  background: var(--blue-primary);
  color: #ffffff;
  border-color: var(--blue-primary);
  box-shadow: 0 2px 8px var(--blue-shadow);
}

/* ==========================================================================
   Project Grid & Cards
   ========================================================================== */
.projects-section {
  padding: 24px 0 64px;
  flex: 1;
  background: #ffffff;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(370px, 1fr));
  gap: 28px;
}

.project-card {
  position: relative;
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: var(--transition-smooth);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--blue-primary);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.07), 0 0 1px var(--blue-primary);
}

/* Card Header Banner (Clean White/Slate Surface) */
.card-banner {
  height: 120px;
  position: relative;
  background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
  border-bottom: 1px solid var(--border-subtle);
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.card-banner-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  z-index: 2;
}

.category-badge {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: var(--blue-soft-bg);
  color: var(--blue-primary);
  border: 1px solid var(--blue-soft-border);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: var(--radius-full);
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue-primary);
  box-shadow: 0 0 4px var(--blue-primary);
}

.card-banner-bottom {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.card-year {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* Card Body */
.card-body {
  padding: 22px;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 12px;
  background: #ffffff;
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.32rem;
  font-weight: 700;
  color: var(--text-pure);
  line-height: 1.3;
  transition: var(--transition-fast);
}

.project-card:hover .card-title {
  color: var(--blue-primary);
}

.card-tagline {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Tech Tags Pills */
.card-tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
  padding-top: 14px;
}

.tech-tag {
  font-size: 0.72rem;
  font-weight: 600;
  font-family: var(--font-mono);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  background: var(--blue-soft-bg);
  border: 1px solid var(--blue-soft-border);
  color: var(--blue-primary);
}

/* Card Footer */
.card-footer {
  padding: 16px 22px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #fcfdfe;
}

.view-details-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.825rem;
  font-weight: 700;
  color: var(--blue-primary);
  transition: var(--transition-fast);
}

.project-card:hover .view-details-link {
  color: var(--blue-hover);
  transform: translateX(3px);
}

.card-quick-links {
  display: flex;
  align-items: center;
  gap: 10px;
}

.icon-link {
  color: var(--text-muted);
  padding: 5px;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.icon-link:hover {
  color: var(--blue-primary);
  background: var(--blue-soft-bg);
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 80px 20px;
  background: #ffffff;
  border: 1px dashed var(--border-medium);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.empty-state-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--blue-soft-bg);
  border: 1px solid var(--blue-soft-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--blue-primary);
}

.empty-state-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  color: var(--text-pure);
}

.empty-state-desc {
  color: var(--text-muted);
  max-width: 440px;
  font-size: 0.95rem;
}

/* ==========================================================================
   Project Detail View (Dedicated Page)
   ========================================================================== */
.detail-view {
  display: none;
  padding: 36px 0 80px;
  background: #ffffff;
}

.detail-view.active {
  display: block;
}

.directory-view {
  display: block;
}

.directory-view.hidden {
  display: none;
}

.detail-nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
  flex-wrap: wrap;
  gap: 16px;
}

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  background: #ffffff;
  border: 1px solid var(--border-medium);
  transition: var(--transition-normal);
  cursor: pointer;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
}

.back-btn:hover {
  border-color: var(--blue-primary);
  color: var(--blue-primary);
  background: var(--blue-soft-bg);
}

.detail-header-card {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 40px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
  margin-bottom: 36px;
}

.detail-meta-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.detail-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 800;
  color: var(--text-pure);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

.detail-tagline {
  font-size: 1.2rem;
  color: var(--blue-primary);
  max-width: 800px;
  margin-bottom: 28px;
  line-height: 1.6;
}

.detail-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* Detail Spec Info Bar */
.detail-spec-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 40px;
}

.spec-cell {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
}

.spec-cell-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.spec-cell-value {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-pure);
}

/* Detail Main Layout (2 Columns) */
.detail-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 36px;
  align-items: start;
}

.detail-content-col {
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.detail-sidebar-col {
  display: flex;
  flex-direction: column;
  gap: 28px;
  position: sticky;
  top: 100px;
}

/* Section Card */
.detail-section {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
}

.section-heading {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-subtle);
}

.section-icon-box {
  width: 32px;
  height: 32px;
  background: var(--blue-soft-bg);
  border: 1px solid var(--blue-soft-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--blue-primary);
}

.section-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-pure);
}

.detail-text {
  font-size: 1.02rem;
  line-height: 1.75;
  color: var(--text-secondary);
}

/* Feature Grid inside Detail */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
}

.feature-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: var(--transition-fast);
}

.feature-item:hover {
  border-color: var(--blue-primary);
  background: #ffffff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.feature-item-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-pure);
}

.feature-item-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* Challenges & Solutions */
.challenges-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.challenge-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px;
}

.challenge-problem {
  font-weight: 600;
  color: var(--text-pure);
  margin-bottom: 8px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.challenge-problem::before {
  content: 'Challenge:';
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 2px 6px;
  background: #e2e8f0;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  margin-top: 2px;
}

.challenge-solution {
  font-size: 0.92rem;
  color: var(--blue-primary);
  line-height: 1.6;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.challenge-solution::before {
  content: 'Solution:';
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 2px 6px;
  background: var(--blue-soft-bg);
  border: 1px solid var(--blue-soft-border);
  border-radius: var(--radius-sm);
  color: var(--blue-primary);
  margin-top: 2px;
}

/* Sidebar Tech Stack Groups */
.tech-tier-group {
  margin-bottom: 18px;
}

.tech-tier-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.tech-tier-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

/* Key Metrics Box in Sidebar */
.metrics-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.metric-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  text-align: center;
}

.metric-val {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--blue-primary);
}

.metric-lbl {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Bottom Project Switcher Bar */
.detail-bottom-nav {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.bottom-nav-link {
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-decoration: none;
  padding: 14px 20px;
  background: #ffffff;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  transition: var(--transition-normal);
  max-width: 320px;
}

.bottom-nav-link:hover {
  border-color: var(--blue-primary);
  background: var(--blue-soft-bg);
}

.bottom-nav-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.bottom-nav-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-pure);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ==========================================================================
   Add/Edit Project Modal
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(9, 13, 22, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  overflow-y: auto;
}

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

.modal-window {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 780px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: modalIn 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.96) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
  padding: 20px 28px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #ffffff;
}

.modal-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-pure);
}

.modal-close-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close-btn:hover {
  color: var(--text-pure);
  background: var(--bg-surface);
}

.modal-body {
  padding: 28px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
  background: #ffffff;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-label {
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
}

.form-input, .form-textarea, .form-select {
  padding: 11px 14px;
  background: #ffffff;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  color: var(--text-pure);
  font-family: var(--font-body);
  font-size: 0.92rem;
  outline: none;
  transition: var(--transition-fast);
}

.form-textarea {
  min-height: 90px;
  resize: vertical;
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  border-color: var(--blue-primary);
  box-shadow: 0 0 0 3px var(--blue-soft-border);
}

.form-help {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.modal-footer {
  padding: 18px 28px;
  border-top: 1px solid var(--border-subtle);
  background: #f8fafc;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  background: #ffffff;
  border: 1px solid var(--blue-primary);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  color: var(--text-pure);
  padding: 12px 20px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  font-weight: 600;
  animation: toastIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--border-subtle);
  background: #ffffff;
  padding: 40px 0 32px;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-copyright {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.footer-palette-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.palette-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot-black { background: #000000; }
.dot-white { background: #ffffff; border: 1px solid #cbd5e1; }
.dot-blue { background: var(--blue-primary); }

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1024px) {
  .detail-layout {
    grid-template-columns: 1fr;
  }
  .detail-sidebar-col {
    position: static;
  }
}

@media (max-width: 768px) {
  .stats-banner {
    grid-template-columns: repeat(2, 1fr);
  }
  .projects-grid {
    grid-template-columns: 1fr;
  }
  .detail-spec-bar {
    grid-template-columns: repeat(2, 1fr);
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .detail-header-card {
    padding: 24px;
  }
  .detail-section {
    padding: 20px;
  }
  .header-actions .btn span.btn-text {
    display: none;
  }
}

@media (max-width: 480px) {
  .stats-banner {
    grid-template-columns: 1fr;
  }
  .detail-spec-bar {
    grid-template-columns: 1fr;
  }
}