/* ==========================================================================
   JUNIARDO.DEV — DESIGN SYSTEM & STYLES
   Semi-Modern, Minimalist, Tactile, Pure CSS (No AI-slop Bloat)
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS CUSTOM PROPERTIES (TOKENS)
   -------------------------------------------------------------------------- */
:root {
  /* Dark Theme (Default) */
  --bg-canvas: #0b0d10;
  --bg-surface: #13161b;
  --bg-surface-elevated: #1a1e25;
  --bg-surface-hover: #222731;
  --bg-glass: rgba(19, 22, 27, 0.75);

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.14);
  --border-strong: rgba(255, 255, 255, 0.22);
  --border-focus: #3b82f6;

  --text-main: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --text-inverted: #0b0d10;

  --accent-primary: #3b82f6;
  --accent-primary-hover: #2563eb;
  --accent-subtle: rgba(59, 130, 246, 0.12);
  --accent-border: rgba(59, 130, 246, 0.3);

  --color-success: #10b981;
  --color-success-bg: rgba(16, 185, 129, 0.12);
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-error-bg: rgba(239, 68, 68, 0.1);

  --grid-pattern-color: rgba(255, 255, 255, 0.035);

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

  /* Layout & Spacing */
  --container-max-width: 1180px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-full: 9999px;

  --transition-fast: 0.15s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.25);
  --shadow-elevated: 0 12px 32px rgba(0, 0, 0, 0.35);
}

/* Light Theme Overrides */
[data-theme="light"] {
  --bg-canvas: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #f1f5f9;
  --bg-surface-hover: #e2e8f0;
  --bg-glass: rgba(255, 255, 255, 0.82);

  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-medium: rgba(0, 0, 0, 0.15);
  --border-strong: rgba(0, 0, 0, 0.25);
  --border-focus: #2563eb;

  --text-main: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-inverted: #ffffff;

  --accent-primary: #2563eb;
  --accent-primary-hover: #1d4ed8;
  --accent-subtle: rgba(37, 99, 235, 0.08);
  --accent-border: rgba(37, 99, 235, 0.25);

  --grid-pattern-color: rgba(0, 0, 0, 0.04);
  --shadow-subtle: 0 4px 18px rgba(0, 0, 0, 0.06);
  --shadow-elevated: 0 12px 30px rgba(0, 0, 0, 0.09);
}

/* --------------------------------------------------------------------------
   2. RESET & BASE ELEMENTS
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-canvas);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  position: relative;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Canvas Grid Background  */
.canvas-grid-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: -1;
  background-size: 32px 32px;
  background-image: 
    linear-gradient(to right, var(--grid-pattern-color) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-pattern-color) 1px, transparent 1px);
}

/* Global Container */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul {
  list-style: none;
}

/* --------------------------------------------------------------------------
   4. NAVIGATION & HEADER
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background-color: var(--bg-glass);
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  border-bottom-color: var(--border-medium);
  box-shadow: var(--shadow-subtle);
}

.header-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.logo-symbol {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--accent-primary);
}

.logo-text {
  color: var(--text-main);
}

.text-accent {
  color: var(--accent-primary);
}

.badge-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border-radius: var(--radius-full);
  background: var(--color-success-bg);
  border: 1px solid rgba(16, 185, 129, 0.25);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--color-success);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-success);
  box-shadow: 0 0 6px var(--color-success);
  animation: pulse-dot 2s infinite ease-in-out;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 4px 0;
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-main);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--accent-primary);
  transition: width var(--transition-fast);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 11px;
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  font-size: 0.78rem;
}

.btn-icon:hover {
  background: var(--bg-surface-hover);
  color: var(--text-main);
  border-color: var(--border-medium);
}

.btn-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

/* Light / Dark icon switch */
[data-theme="dark"] .icon-sun { display: block; }
[data-theme="dark"] .icon-moon { display: none; }
[data-theme="light"] .icon-sun { display: none; }
[data-theme="light"] .icon-moon { display: block; }

.nav-menu-inner {
  display: contents;
}

.mobile-only {
  display: none !important;
}

/* --------------------------------------------------------------------------
   HAMBURGER BUTTON & ICON ANIMATION
   -------------------------------------------------------------------------- */
.hamburger-btn {
  position: relative;
  width: 36px;
  height: 36px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  user-select: none;
  overflow: hidden;
}

.hamburger-btn:hover {
  background: var(--bg-surface-hover);
  color: var(--text-main);
  border-color: var(--border-medium);
}

.hamburger-btn:active {
  transform: scale(0.92);
}

.hamburger-btn.open,
.hamburger-btn[aria-expanded="true"] {
  border-color: var(--accent-border);
  background: var(--accent-subtle);
  color: var(--accent-primary);
  box-shadow: 0 0 14px rgba(59, 130, 246, 0.22);
}

.hamburger-box {
  width: 18px;
  height: 14px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  position: relative;
  pointer-events: none;
}

.hamburger-line {
  display: block;
  width: 100%;
  height: 2px;
  background-color: currentColor;
  border-radius: 9999px;
  transform-origin: center;
  transition: transform 0.35s cubic-bezier(0.68, -0.6, 0.32, 1.6),
              opacity 0.22s ease,
              background-color var(--transition-fast);
  will-change: transform, opacity;
}

/* Morphing hamburger lines into 'X' */
.hamburger-btn.open .line-top,
.hamburger-btn[aria-expanded="true"] .line-top {
  transform: translateY(6px) rotate(45deg);
}

.hamburger-btn.open .line-middle,
.hamburger-btn[aria-expanded="true"] .line-middle {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger-btn.open .line-bottom,
.hamburger-btn[aria-expanded="true"] .line-bottom {
  transform: translateY(-6px) rotate(-45deg);
}

/* --------------------------------------------------------------------------
   MOBILE NAV BACKDROP OVERLAY
   -------------------------------------------------------------------------- */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.32s cubic-bezier(0.16, 1, 0.3, 1),
              visibility 0.32s;
  z-index: 95;
  pointer-events: none;
}

.nav-overlay.open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

body.menu-open {
  overflow: hidden;
  touch-action: none;
}

/* --------------------------------------------------------------------------
   5. BUTTONS & UI PILLS
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  font-size: 0.88rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--accent-primary);
  color: #ffffff;
  border: 1px solid transparent;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.btn-primary:hover {
  background-color: var(--accent-primary-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--bg-surface);
  color: var(--text-main);
  border: 1px solid var(--border-medium);
}

.btn-secondary:hover {
  background-color: var(--bg-surface-hover);
  border-color: var(--border-strong);
}

.btn-tiny {
  padding: 5px 10px;
  font-size: 0.75rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  color: var(--text-main);
  border-radius: var(--radius-sm);
}

.btn-tiny:hover {
  background: var(--accent-subtle);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.btn-block {
  width: 100%;
}

.btn-link-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.btn-link-icon:hover {
  color: var(--text-main);
  background: var(--bg-surface-hover);
  border-color: var(--border-medium);
}

/* Pill Label */
.label-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 4px 12px;
  border-radius: var(--radius-full);
}

.label-pill .divider {
  color: var(--border-strong);
}

/* --------------------------------------------------------------------------
   6. HERO SECTION
   -------------------------------------------------------------------------- */
.section-hero {
  padding-top: 140px;
  padding-bottom: 90px;
  position: relative;
}

.hero-container {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.hero-top-badge {
  margin-bottom: 24px;
}

.hero-title {
  font-size: 2.85rem;
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.035em;
  color: var(--text-main);
  margin-bottom: 20px;
}

.highlight-underline {
  position: relative;
  white-space: nowrap;
}

.highlight-underline::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 4px;
  width: 100%;
  height: 8px;
  background: var(--accent-subtle);
  border-bottom: 2px solid var(--accent-primary);
  z-index: -1;
}

.hero-description {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 580px;
}

.hero-description strong {
  color: var(--text-main);
  font-weight: 600;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 44px;
}

/* Hero Metrics Strip (Clean, Authentic, Data-driven) */
.hero-metrics-strip {
  display: flex;
  align-items: center;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  gap: 20px;
}

.metric-item {
  display: flex;
  flex-direction: column;
}

.metric-val {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.metric-label {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.metric-separator {
  width: 1px;
  height: 28px;
  background-color: var(--border-subtle);
}

/* --------------------------------------------------------------------------
   7. MOCKUP & LIVE TERMINAL FRAME
   -------------------------------------------------------------------------- */
.hero-preview-wrapper {
  position: relative;
}

.mockup-frame {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-elevated);
  overflow: hidden;
  position: relative;
  transition: transform var(--transition-normal);
}

.mockup-frame:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
}

.frame-bar {
  background: var(--bg-surface-elevated);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
}

.frame-dots {
  display: flex;
  gap: 6px;
}

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

.dot-close { background: #ff5f56; }
.dot-min { background: #ffbd2e; }
.dot-max { background: #27c93f; }

.frame-tab-title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.status-indicator-green {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--color-success);
  background: var(--color-success-bg);
  padding: 2px 7px;
  border-radius: 4px;
}

.terminal-nav-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-surface);
}

.t-tab {
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  border-right: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

.t-tab.active,
.t-tab:hover {
  color: var(--text-main);
  background: var(--bg-surface-elevated);
}

.t-tab.active {
  border-bottom: 2px solid var(--accent-primary);
}

.frame-body {
  padding: 16px;
  background: var(--bg-canvas);
  min-height: 260px;
}

.terminal-view {
  display: none;
}

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

/* Syntax Highlighting */
.code-block {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.65;
  color: #abb2bf;
  overflow-x: auto;
}

.c-comment { color: #5c6370; font-style: italic; }
.c-keyword { color: #c678dd; }
.c-const { color: #e5c07b; }
.c-prop { color: #e06c75; }
.c-string { color: #98c379; }

/* Interactive Ping Panel */
.interactive-ping-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 10px 4px;
}

.ping-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.ping-label {
  color: var(--text-secondary);
}

.badge-success {
  background: var(--color-success-bg);
  color: var(--color-success);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.72rem;
}

.badge-accent {
  background: var(--accent-subtle);
  color: var(--accent-primary);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.72rem;
}

.ping-action-box {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

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

/* Design Tokens Grid View */
.tokens-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.token-card {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 8px 10px;
  border-radius: var(--radius-sm);
}

.token-swatch {
  width: 28px;
  height: 28px;
  border-radius: 4px;
  border: 1px solid var(--border-medium);
}

.bg-swatch-canvas { background: #0E1013; }
.bg-swatch-accent { background: #3B82F6; }
.bg-swatch-emerald { background: #10B981; }
.bg-swatch-border { background: rgba(255,255,255,0.1); }

.token-info {
  display: flex;
  flex-direction: column;
  font-family: var(--font-mono);
}

.t-name {
  font-size: 0.7rem;
  color: var(--text-main);
  font-weight: 500;
}

.t-hex {
  font-size: 0.65rem;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   8. COMMON SECTION HEADERS
   -------------------------------------------------------------------------- */
main {
  min-height: calc(100vh - 220px);
}

section {
  padding: 90px 0;
  border-bottom: 1px solid var(--border-subtle);
}

/* Subpages: first section clears the fixed header */
main > section:first-child:not(.section-hero) {
  padding-top: 140px;
}

.section-header {
  margin-bottom: 48px;
  max-width: 680px;
}

.section-tag {
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.1rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-main);
  margin-bottom: 14px;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* --------------------------------------------------------------------------
   9. SELECTED WORKS / CASE STUDIES
   -------------------------------------------------------------------------- */
.project-filter-bar {
  display: flex;
  gap: 8px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 7px 15px;
  border-radius: var(--radius-full);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  background: var(--bg-surface-hover);
  color: var(--text-main);
}

.filter-btn.active {
  background: var(--text-main);
  color: var(--text-inverted);
  border-color: var(--text-main);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.project-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-medium);
  box-shadow: var(--shadow-elevated);
}

.project-preview-box {
  background: var(--bg-canvas);
  padding: 24px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 220px;
}

.ui-mockup-window {
  width: 100%;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.mockup-bar {
  background: var(--bg-surface-elevated);
  padding: 6px 12px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--border-subtle);
}

.mockup-dots {
  display: flex;
  gap: 4px;
}

.m-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--border-strong);
}

.mockup-url {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
}

.mockup-canvas-app {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* Metric representation inside mockup */
.mockup-top-metric {
  display: flex;
  justify-content: space-between;
}

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

.m-stat-label {
  font-size: 0.65rem;
  color: var(--text-muted);
}

.m-stat-number {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
}

.m-stat-number.m-green {
  color: var(--color-success);
}

.mockup-bar-chart {
  display: flex;
  align-items: flex-end;
  height: 50px;
  gap: 8px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border-subtle);
}

.chart-col {
  flex: 1;
  background: var(--border-medium);
  border-radius: 2px 2px 0 0;
  transition: height 0.5s ease;
}

.chart-col.active-col {
  background: var(--accent-primary);
}

.mockup-status-row {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.badge-mini {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 2px 6px;
  border-radius: 3px;
}

/* POS Mockup */
.mockup-pos-view {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
}

.pos-receipt {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.p-line {
  height: 6px;
  background: var(--border-medium);
  border-radius: 3px;
}

.width-60 { width: 80px; }
.width-40 { width: 50px; }

.pos-badge-offline {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--color-warning);
  background: rgba(245, 158, 11, 0.1);
  padding: 2px 6px;
  border-radius: 3px;
}

.pos-graph {
  display: flex;
  align-items: center;
  gap: 6px;
}

.sync-node {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  padding: 3px 6px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  border-radius: 4px;
}

.sync-line {
  width: 20px;
  height: 2px;
  background: var(--color-success);
}

/* Workflow Canvas Mockup */
.workflow-canvas {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
}

.wf-node {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-strong);
  padding: 6px 8px;
  border-radius: 4px;
  position: relative;
}

.wf-connector {
  flex: 1;
  height: 2px;
  background: var(--accent-primary);
  position: relative;
}

/* Security spec */
.security-card-spec {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sec-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-success);
}

.sec-metrics-grid {
  display: flex;
  gap: 16px;
}

.sec-item {
  display: flex;
  flex-direction: column;
}

.s-k {
  font-size: 0.65rem;
  color: var(--text-muted);
}

.s-v {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-main);
}

.sec-token-display {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--accent-primary);
  background: var(--accent-subtle);
  padding: 4px 8px;
  border-radius: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Project Card Info */
.project-content {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-meta-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.project-role-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-primary);
  background: var(--accent-subtle);
  padding: 2px 8px;
  border-radius: 4px;
}

.project-year {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.project-heading {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-main);
  margin-bottom: 10px;
  line-height: 1.4;
}

.project-excerpt {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
}

.project-tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 24px;
}

.tech-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
}

.project-actions {
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: 12px;
}

/* --------------------------------------------------------------------------
   10. TECH STACK & ARCHITECTURE MATRIX
   -------------------------------------------------------------------------- */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.stack-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), border-color var(--transition-normal);
}

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

.stack-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.stack-icon-wrap {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
}

.stack-category-name {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.stack-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 22px;
  line-height: 1.55;
}

.tech-item-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: auto;
}

.tech-item {
  display: flex;
  flex-direction: column;
  padding: 10px 12px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast);
}

.tech-item:hover {
  border-color: var(--border-strong);
}

.tech-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
}

.tech-level {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* --------------------------------------------------------------------------
   11. PRINCIPLES / PHILOSOPHY
   -------------------------------------------------------------------------- */
.principles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.principle-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.principle-item:hover {
  border-color: var(--border-medium);
}

.p-num {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--border-strong);
  margin-bottom: 12px;
  display: block;
}

.p-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 10px;
  letter-spacing: -0.02em;
}

.p-text {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* --------------------------------------------------------------------------
   12. WORK EXPERIENCE TIMELINE
   -------------------------------------------------------------------------- */
.timeline-container {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.timeline-card {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 32px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: border-color var(--transition-fast);
}

.timeline-card:hover {
  border-color: var(--border-medium);
}

.timeline-time {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.time-range {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-main);
  font-weight: 500;
}

.time-badge {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  background: var(--bg-surface-elevated);
  padding: 2px 6px;
  border-radius: 4px;
  width: fit-content;
}

.role-header {
  margin-bottom: 10px;
}

.role-title {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.company-name {
  font-size: 0.9rem;
  color: var(--accent-primary);
  font-weight: 500;
}

.role-summary {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.role-bullets {
  list-style: disc;
  padding-left: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.84rem;
  color: var(--text-secondary);
}

.role-bullets li {
  line-height: 1.55;
}

/* --------------------------------------------------------------------------
   13. CONTACT & FORM
   -------------------------------------------------------------------------- */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: flex-start;
}

.contact-title {
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-main);
  margin-top: 14px;
  margin-bottom: 16px;
}

.contact-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 32px;
}

.contact-direct-channels {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 32px;
}

.channel-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.c-icon {
  color: var(--accent-primary);
  display: flex;
}

.c-details {
  display: flex;
  flex-direction: column;
}

.c-type {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.c-value {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-main);
}

.social-links-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.social-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.social-pill:hover {
  background: var(--bg-surface-hover);
  color: var(--text-main);
  border-color: var(--border-medium);
}

/* Contact Form Card */
.form-container-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-subtle);
}

.card-top-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-subtle);
}

.card-heading-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-main);
}

.response-time-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-success);
  background: var(--color-success-bg);
  padding: 2px 8px;
  border-radius: 4px;
}

.contact-fields {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-input {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-canvas);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-size: 0.88rem;
  font-family: inherit;
  transition: all var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-subtle);
}

.form-select {
  cursor: pointer;
}

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

.field-error {
  font-size: 0.72rem;
  color: var(--color-error);
  display: none;
}

.form-group.has-error .form-input {
  border-color: var(--color-error);
  background: var(--color-error-bg);
}

.form-group.has-error .field-error {
  display: block;
}

/* --------------------------------------------------------------------------
   14. FOOTER
   -------------------------------------------------------------------------- */
.site-footer {
  padding: 60px 0 40px;
  background: var(--bg-canvas);
}

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

.footer-left {
  max-width: 440px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 12px;
}

.footer-copy {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.footer-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}

.footer-specs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.f-spec {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 3px 8px;
  border-radius: 4px;
}

.footer-copyright {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   15. CASE STUDY DETAIL MODAL
   -------------------------------------------------------------------------- */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.modal-backdrop.open {
  display: flex;
  opacity: 1;
}

.modal-container {
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  max-width: 780px;
  width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-elevated);
  transform: translateY(12px);
  transition: transform var(--transition-normal);
  overflow: hidden;
}

.modal-backdrop.open .modal-container {
  transform: translateY(0);
}

.modal-header {
  padding: 16px 24px;
  background: var(--bg-surface-elevated);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-breadcrumbs {
  display: flex;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.modal-close {
  color: var(--text-secondary);
  padding: 4px;
  border-radius: 4px;
  display: flex;
  transition: color var(--transition-fast);
}

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

.modal-body {
  padding: 28px;
  overflow-y: auto;
}

.modal-section {
  margin-bottom: 24px;
}

.modal-section-title {
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: var(--accent-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.modal-text {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.modal-grid-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 14px;
}

.modal-stat-box {
  background: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  padding: 12px;
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
}

.m-val {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-main);
}

.m-lbl {
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   16. TOAST NOTIFICATION
   -------------------------------------------------------------------------- */
.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: var(--bg-surface-elevated);
  border: 1px solid var(--border-strong);
  color: var(--text-main);
  padding: 12px 18px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-elevated);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 10px;
  transform: translateY(20px);
  opacity: 0;
  animation: toast-in 0.3s forwards cubic-bezier(0.16, 1, 0.3, 1);
}

.toast-success {
  border-left: 4px solid var(--color-success);
}

@keyframes toast-in {
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* --------------------------------------------------------------------------
   17. RESPONSIVE BREAKPOINTS
   -------------------------------------------------------------------------- */
@media (max-width: 992px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

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

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

  .contact-wrapper {
    grid-template-columns: 1fr;
  }

  .timeline-card {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .footer-right {
    align-items: flex-start;
  }
}

@media (max-width: 768px) {
  .mobile-only {
    display: inline-flex !important;
  }

  .mobile-only.nav-menu-header,
  .mobile-only.nav-menu-footer {
    display: flex !important;
  }

  .site-header .nav-menu {
    display: block;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-surface);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--border-strong);
    box-shadow: 0 24px 48px -8px rgba(0, 0, 0, 0.55),
                0 0 0 1px var(--border-subtle);
    padding: 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-16px) scale(0.98);
    transform-origin: top center;
    transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
                visibility 0.3s ease;
    pointer-events: none;
    z-index: 100;
    max-height: calc(100vh - 70px);
    overflow-y: auto;
  }

  .site-header .nav-menu.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
    pointer-events: auto;
  }

  .nav-menu-inner {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 18px 20px 22px;
  }

  .nav-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-subtle);
  }

  .nav-menu-badge {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent-primary);
  }

  .nav-menu-hint {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-muted);
  }

  .nav-list {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    width: 100%;
  }

  /* Staggered entrance animation for navigation links */
  .site-header .nav-list li {
    opacity: 0;
    transform: translateX(-14px);
    transition: opacity 0.22s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .site-header .nav-menu.open .nav-list li {
    opacity: 1;
    transform: translateX(0);
  }

  .site-header .nav-menu.open .nav-list li:nth-child(1) { transition-delay: 0.02s; }
  .site-header .nav-menu.open .nav-list li:nth-child(2) { transition-delay: 0.05s; }
  .site-header .nav-menu.open .nav-list li:nth-child(3) { transition-delay: 0.08s; }
  .site-header .nav-menu.open .nav-list li:nth-child(4) { transition-delay: 0.11s; }
  .site-header .nav-menu.open .nav-list li:nth-child(5) { transition-delay: 0.14s; }

  .site-header .nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid transparent;
    transition: all var(--transition-fast);
    font-size: 0.92rem;
    position: relative;
    width: 100%;
  }

  .site-header .nav-link::after {
    display: none;
  }

  .site-header .nav-link:hover {
    color: var(--text-main);
    background: var(--bg-surface-elevated);
    border-color: var(--border-subtle);
    transform: translateX(4px);
  }

  .site-header .nav-link.active {
    color: var(--text-main);
    background: var(--bg-surface-elevated);
    border-color: var(--accent-border);
    font-weight: 600;
  }

  .nav-num {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--accent-primary);
    background: var(--accent-subtle);
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid var(--accent-border);
  }

  .nav-text {
    flex: 1;
  }

  .nav-arrow {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-muted);
    transition: transform var(--transition-fast), color var(--transition-fast);
  }

  .site-header .nav-link:hover .nav-arrow,
  .site-header .nav-link.active .nav-arrow {
    color: var(--accent-primary);
    transform: translateX(3px);
  }

  .nav-menu-footer {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding-top: 14px;
    border-top: 1px solid var(--border-subtle);
  }

  .nav-footer-status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.75rem;
    color: var(--color-success);
  }

  .nav-footer-email {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
  }

  .nav-footer-email:hover {
    color: var(--accent-primary);
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .hero-metrics-strip {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }

  .metric-separator {
    width: 100%;
    height: 1px;
  }

  .hero-cta-group {
    flex-direction: column;
    align-items: stretch;
  }

  .modal-grid-stats {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .header-container {
    padding: 12px 16px;
  }

  .badge-status {
    display: none;
  }

}