/* Daniil Kulakov | IT Support Specialist Portfolio Stylesheet */

/* --- 1. DESIGN TOKENS & SYSTEMS --- */
:root {
  /* Colors */
  --bg: #f3f4f6;
  --bg-soft: #ffffff;
  --panel: rgba(255, 255, 255, 0.76);
  --panel-strong: rgba(255, 255, 255, 0.94);
  --border: rgba(15, 23, 42, 0.08);
  --border-strong: rgba(15, 23, 42, 0.16);
  
  --text: #0f172a;
  --muted: #64748b;
  --muted-strong: #334155;
  
  --accent: #0d9488; /* Emerald Teal */
  --accent-soft: rgba(13, 148, 136, 0.08);
  --accent-cool: rgba(59, 130, 246, 0.08);
  --accent-warm: #f97316;
  
  /* Shadow & Blur */
  --shadow: 0 16px 40px -10px rgba(15, 23, 42, 0.06);
  --shadow-hover: 0 24px 48px -8px rgba(15, 23, 42, 0.12);
  --shadow-tint: rgba(13, 148, 136, 0.04);
  --blur: blur(12px);
  
  /* Radii */
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 8px;
  
  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --transition: 200ms var(--ease-out);
  --max-width: 1200px;
}

:root[data-theme="dark"] {
  /* Colors */
  --bg: #070a0e;
  --bg-soft: #0b1118;
  --panel: rgba(12, 20, 30, 0.78);
  --panel-strong: rgba(10, 16, 25, 0.94);
  --border: rgba(255, 255, 255, 0.06);
  --border-strong: rgba(255, 255, 255, 0.12);
  
  --text: #f1f5f9;
  --muted: #94a3b8;
  --muted-strong: #cbd5e1;
  
  --accent: #10b981; /* Saturated Emerald */
  --accent-soft: rgba(16, 185, 129, 0.12);
  --accent-cool: rgba(59, 130, 246, 0.12);
  --accent-warm: #fb923c;
  
  /* Shadow & Blur */
  --shadow: 0 20px 50px -12px rgba(0, 0, 0, 0.42);
  --shadow-hover: 0 30px 60px -10px rgba(0, 0, 0, 0.55);
  --shadow-tint: rgba(16, 185, 129, 0.06);
}

/* --- 2. BASE RESET & BODY GRAPHICS --- */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "DM Sans", sans-serif;
  color: var(--text);
  background: var(--bg);
  position: relative;
  overflow-x: hidden;
}

/* Background grid and ambient glow */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(circle at center, black 40%, transparent 95%);
  opacity: 0.45;
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  background: 
    radial-gradient(circle at 12% 15%, var(--accent-soft) 0%, transparent 35%),
    radial-gradient(circle at 85% 10%, var(--accent-cool) 0%, transparent 40%);
  pointer-events: none;
  z-index: 0;
}

a {
  color: inherit;
  text-decoration: none;
  outline: none;
}

button {
  font: inherit;
  border: 0;
  background: transparent;
  outline: none;
}

/* --- 3. PAGE SHELL & STICKY HEADER --- */
.site-shell {
  position: relative;
  z-index: 1;
}

.site-header {
  position: sticky;
  top: 1rem;
  z-index: 100;
  max-width: var(--max-width);
  width: calc(100% - 2rem);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.75rem 1.75rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--panel);
  backdrop-filter: var(--blur);
  box-shadow: var(--shadow);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.site-header:hover {
  border-color: var(--border-strong);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
}

.brand-mark {
  width: 1.8rem;
  height: 1.8rem;
  background-image: url('Logo/Main_logo.png');
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
  transition: transform var(--transition);
}

.brand:hover .brand-mark {
  transform: scale(1.08);
}

.brand-copy {
  display: grid;
  line-height: 1.15;
}

:root[data-theme="dark"] .brand-mark {
  filter: invert(0.9) hue-rotate(180deg) brightness(1.8);
}

.brand-copy strong {
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
}

.brand-copy span {
  color: var(--muted);
  font-size: 0.78rem;
}

/* Navigation links */
.site-nav {
  display: flex;
  align-items: center;
  gap: 1.8rem;
}

.site-nav a {
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--muted);
  position: relative;
  padding: 0.25rem 0;
  transition: color var(--transition);
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1.5px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 250ms var(--ease-out);
}

.site-nav a:hover {
  color: var(--text);
}

.site-nav a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.site-nav a.is-active {
  color: var(--text);
}

.site-nav a.is-active::after {
  transform: scaleX(1);
  transform-origin: left;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Theme Toggle button */
.theme-toggle {
  width: 2.6rem;
  height: 2.6rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-soft);
  color: var(--text);
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.42);
  transition: border-color var(--transition), background-color var(--transition), transform var(--transition);
}

.theme-toggle:hover {
  border-color: var(--border-strong);
  transform: scale(1.04);
}

.theme-toggle:active {
  transform: scale(0.96);
}

.theme-toggle-icon {
  font-size: 1.05rem;
  line-height: 1;
}

.theme-toggle-label {
  display: none; /* Icon-only on desktop */
}

/* Language Selector */
.language-switcher {
  position: relative;
}

.language-trigger {
  min-height: 2.6rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
  padding: 0 0.85rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-soft);
  color: var(--text);
  cursor: pointer;
  transition: border-color var(--transition), background-color var(--transition), transform var(--transition);
}

.language-trigger::after {
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-1px);
  opacity: 0.72;
  transition: transform var(--transition);
}

.language-switcher.is-open .language-trigger::after {
  transform: rotate(-135deg) translateY(2px);
}

.language-trigger:hover {
  border-color: var(--border-strong);
  transform: translateY(-1px);
}

.language-trigger:active {
  transform: scale(0.98);
}

.language-trigger-label {
  color: var(--muted-strong);
  font-size: 0.88rem;
  font-weight: 500;
}

.language-trigger-code {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.language-menu {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  width: 11rem;
  display: grid;
  gap: 0.15rem;
  padding: 0.35rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--panel-strong);
  backdrop-filter: var(--blur);
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-6px) scale(0.97);
  transform-origin: top right;
  transition: opacity 180ms var(--ease-out), transform 180ms var(--ease-out);
}

.language-switcher.is-open .language-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

.language-option {
  width: 100%;
  min-height: 2.4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.75rem;
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--muted-strong);
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition);
}

.language-option span {
  font-size: 0.85rem;
  text-align: left;
}

.language-option strong {
  font-size: 0.78rem;
  color: var(--muted);
}

.language-option:hover {
  background: rgba(15, 23, 42, 0.04);
  color: var(--text);
}

.language-option.is-active {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
}

/* Nav toggle button (mobile only) */
.nav-toggle {
  display: none;
  width: 2.6rem;
  height: 2.6rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-soft);
  color: var(--text);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.25rem;
  cursor: pointer;
  transition: border-color var(--transition);
}

.nav-toggle span {
  width: 1.05rem;
  height: 1.5px;
  border-radius: 999px;
  background: currentColor;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle.is-active span:first-child {
  transform: translateY(4px) rotate(45deg);
}

.nav-toggle.is-active span:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

/* --- 4. HERO SECTION --- */
.hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(360px, 0.85fr);
  gap: 3rem;
  align-items: center;
}

.hero-copy {
  position: relative;
  z-index: 10;
}

.hero-role {
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1rem;
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--accent-soft);
  border-radius: 999px;
  background: var(--accent-soft);
}

.hero-role::before {
  content: "";
  width: 6px;
  height: 6px;
  background: currentColor;
  border-radius: 999px;
}

h1 {
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(2.4rem, 5.2vw, 4.4rem);
  line-height: 0.98;
  letter-spacing: -0.05em;
  margin: 0 0 1.25rem;
  color: var(--text);
}

.hero-text {
  font-size: 1.12rem;
  line-height: 1.7;
  color: var(--muted-strong);
  max-width: 54ch;
  margin: 0 0 2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 2.5rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.25rem;
  padding: 0 1.55rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform var(--transition), border-color var(--transition), background-color var(--transition), box-shadow var(--transition);
}

.button:hover {
  transform: translateY(-2px);
}

.button:active {
  transform: translateY(0) scale(0.98);
}

.button-primary {
  background: linear-gradient(135deg, var(--accent), #14b8a6);
  color: #ffffff;
  box-shadow: 0 10px 24px -6px rgba(13, 148, 136, 0.28);
}

.button-primary:hover {
  box-shadow: 0 12px 28px -4px rgba(13, 148, 136, 0.42);
}

.button-secondary {
  border: 1px solid var(--border-strong);
  background: var(--bg-soft);
  color: var(--text);
}

.button-secondary:hover {
  border-color: var(--text);
  background: var(--bg);
}

.hero-proof {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
}

.hero-proof-item {
  display: grid;
  gap: 0.25rem;
}

.hero-proof-item span {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.hero-proof-item strong {
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.95rem;
  color: var(--text);
  line-height: 1.35;
}

/* --- 5. INTERACTIVE TERMINAL / OPS CONSOLE --- */
.hero-visual {
  position: relative;
  perspective: 1000px;
}

.ops-console {
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  background: var(--panel);
  backdrop-filter: var(--blur);
  box-shadow: var(--shadow);
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transform: rotateX(var(--tilt-x, 0deg)) rotateY(var(--tilt-y, 0deg));
  transform-style: preserve-3d;
  transition: transform 180ms ease-out, box-shadow var(--transition);
}

.ops-console:hover {
  box-shadow: var(--shadow-hover);
}

.ops-console-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 0.5rem;
  border-bottom: 1px dashed var(--border);
}

.ops-console-window-controls {
  display: flex;
  gap: 0.4rem;
}

.ops-console-window-controls span {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.15);
}

:root[data-theme="dark"] .ops-console-window-controls span {
  background: rgba(255, 255, 255, 0.15);
}

.ops-console-window-controls span:nth-child(1) { background: #ef4444; }
.ops-console-window-controls span:nth-child(2) { background: #f59e0b; }
.ops-console-window-controls span:nth-child(3) { background: #10b981; }

.ops-console-window-title {
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.8rem;
  color: var(--muted);
  font-weight: 500;
}

.ops-console-status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
}

.ops-console-status-indicator .pulsing-dot {
  width: 7px;
  height: 7px;
  background: currentColor;
  border-radius: 999px;
  box-shadow: 0 0 10px currentColor;
  animation: pulsingGlow 2s infinite;
}

/* System Topology / Node Selector Map */
.ops-map {
  position: relative;
  height: 180px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-soft);
  overflow: hidden;
}

.ops-map::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle, var(--border) 1px, transparent 1px);
  background-size: 16px 16px;
  opacity: 0.7;
}

.ops-node {
  position: absolute;
  min-height: 2.3rem;
  padding: 0 0.85rem;
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  background: var(--panel-strong);
  color: var(--text);
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.84rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: transform var(--transition), border-color var(--transition), background-color var(--transition), box-shadow var(--transition);
}

.ops-node:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}

.ops-node.is-active {
  transform: translateY(-2px);
  border-color: var(--accent);
  background: var(--accent);
  color: #ffffff;
  box-shadow: 0 8px 20px -4px var(--accent);
}

.ops-node:active {
  transform: translateY(0);
}

.ops-node-main { top: 40%; left: 42%; }
.ops-node-hardware { top: 12%; left: 8%; }
.ops-node-linux { top: 18%; right: 8%; }
.ops-node-network { bottom: 12%; left: 18%; }

/* Readout panel */
.ops-readout {
  padding: 0.95rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-soft);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.25rem;
  align-items: start;
}

.ops-readout-indicator {
  display: grid;
  gap: 0.15rem;
}

.ops-readout-indicator span {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.ops-readout-indicator strong {
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.92rem;
  color: var(--text);
}

.ops-readout p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.45;
  color: var(--muted-strong);
}

/* Schematic Area */
.ops-schematic-wrap {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: #020617; /* Always dark terminal */
  color: #38bdf8; /* Light blue code tint */
  font-family: monospace;
  padding: 0.85rem;
  min-height: 120px;
  position: relative;
  overflow: hidden;
}

.ops-schematic-wrap::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(56, 189, 248, 0.02) 1px, transparent 1px);
  background-size: 100% 4px;
}

.ops-schematic-header {
  font-size: 0.76rem;
  color: #64748b;
  margin-bottom: 0.45rem;
  display: flex;
  justify-content: space-between;
}

.ops-schematic-content {
  margin: 0;
  font-size: 0.82rem;
  line-height: 1.45;
}

/* Live connection log */
.ops-log {
  display: grid;
  gap: 0.35rem;
  font-family: monospace;
  font-size: 0.8rem;
  color: var(--muted-strong);
}

.ops-log div {
  display: flex;
  gap: 0.6rem;
}

.ops-log span {
  color: var(--accent);
  font-weight: 700;
  user-select: none;
}

.ops-log p {
  margin: 0;
}

.ops-meter {
  height: 4px;
  border-radius: 99px;
  background: var(--border);
  overflow: hidden;
  position: relative;
}

.ops-meter span {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-warm));
  border-radius: inherit;
  transform: translateX(-35%);
  animation: telemetryPulse 3s linear infinite alternate;
}

/* --- 6. SECTIONS COMMON --- */
.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 5rem 1.5rem;
  scroll-margin-top: 6.5rem;
  position: relative;
  z-index: 10;
}

.section-head {
  margin-bottom: 3rem;
  max-width: 800px;
}

h2 {
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 0.98;
  letter-spacing: -0.05em;
  margin: 0;
  color: var(--text);
}

/* --- 7. ABOUT SECTION (BENTO GRID OVERHAUL) --- */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.bento-card {
  padding: 1.8rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: var(--blur);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.bento-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-hover);
}

.bento-label {
  display: block;
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 1rem;
}

/* Specific Bento alignments */
.bento-bio {
  grid-column: span 2;
  grid-row: span 2;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: 1.5rem;
}

.bento-bio-head {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.bento-icon {
  font-size: 1.6rem;
  color: var(--accent);
}

.bento-bio h3 {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.5rem;
  margin: 0;
}

.bento-bio-text {
  display: grid;
  gap: 1rem;
}

.bento-bio-text p {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--muted-strong);
}

/* Experience Card */
.bento-experience {
  grid-column: span 1;
}

.bento-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.7rem;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
  align-self: flex-start;
}

.bento-badge i {
  font-size: 1.15rem;
}

.bento-card h4 {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.18rem;
  margin: 0 0 0.5rem;
}

.bento-subtext {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.45;
  color: var(--muted);
}

/* Education Card */
.bento-education {
  grid-column: span 1;
}

.bento-progress-container {
  margin-top: 1rem;
}

.bento-progress-bar {
  height: 6px;
  background: var(--border);
  border-radius: 99px;
  overflow: hidden;
  margin-top: 0.5rem;
}

.bento-progress-bar span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--accent);
}

/* Languages Card */
.bento-languages {
  grid-column: span 1;
}

.bento-lang-list {
  display: grid;
  gap: 0.65rem;
}

.bento-lang-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.bento-lang-item span {
  font-size: 0.95rem;
  font-weight: 500;
}

.lang-badge {
  font-size: 0.74rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  border: 1px solid var(--border-strong);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.lang-ru { background: rgba(59, 130, 246, 0.08); color: #3b82f6; border-color: rgba(59, 130, 246, 0.15); }
.lang-en { background: rgba(16, 185, 129, 0.08); color: #10b981; border-color: rgba(16, 185, 129, 0.15); }
.lang-ja { background: rgba(239, 68, 68, 0.08); color: #ef4444; border-color: rgba(239, 68, 68, 0.15); }

/* Relocation Card */
.bento-relocation {
  grid-column: span 1;
}

.bento-reloc-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 1rem;
}

.bento-reloc-item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-soft);
  font-size: 0.86rem;
  font-weight: 500;
}

.bento-reloc-item i {
  color: var(--accent);
}

.bento-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.84rem;
}

.bento-status .pulsing-dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 999px;
  box-shadow: 0 0 8px var(--accent);
  animation: pulsingGlow 2s infinite;
}

/* --- 8. SKILLS SECTION --- */
.skill-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-bottom: 2rem;
}

.skill-filter {
  min-height: 2.6rem;
  padding: 0 1.2rem;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--bg-soft);
  color: var(--muted-strong);
  font-weight: 700;
  font-size: 0.88rem;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.42);
  transition: transform var(--transition), color var(--transition), background-color var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.skill-filter:hover {
  transform: translateY(-1.5px);
  border-color: var(--text);
}

.skill-filter.is-active {
  transform: translateY(-1.5px);
  background: #e4e4e7; /* Slate-zinc grey active background */
  color: #18181b;      /* Dark text for contrast */
  border-color: #cbd5e1;
  box-shadow: var(--shadow);
}

.skill-filter:active {
  transform: translateY(0);
}

:root[data-theme="dark"] .skill-filter {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.1);
  color: var(--muted-strong);
}

:root[data-theme="dark"] .skill-filter:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(255, 255, 255, 0.22);
  color: var(--text);
}

:root[data-theme="dark"] .skill-filter.is-active {
  background: #4b5563; /* Medium slate grey (grey-600) */
  color: #ffffff;
  border-color: #6b7280;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.skill-group {
  padding: 1.8rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: var(--blur);
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  transition: opacity var(--transition), filter var(--transition), transform var(--transition), border-color var(--transition);
}

.skill-group:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
}

.skill-group-head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.skill-group-head i {
  font-size: 1.45rem;
  color: var(--accent);
}

.skill-group h3 {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.25rem;
  margin: 0;
}

.skill-group ul {
  margin: 0;
  padding: 0 0 0 1.2rem;
  display: grid;
  gap: 0.6rem;
}

.skill-group li {
  font-size: 0.95rem;
  line-height: 1.45;
  color: var(--muted-strong);
}

.skill-group.is-dimmed {
  opacity: 0.08;
  filter: grayscale(1) blur(1px);
  transform: scale(0.97);
  pointer-events: none;
}

.skill-group.is-active-filter {
  background: rgba(15, 23, 42, 0.03); /* Subtle light grey */
  border-color: rgba(15, 23, 42, 0.18); /* Grey border */
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.03);
  transform: translateY(-2px);
}

:root[data-theme="dark"] .skill-group.is-active-filter {
  background: rgba(255, 255, 255, 0.07); /* Clearer dark grey glass */
  border-color: rgba(255, 255, 255, 0.22); /* Lighter grey border */
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  transform: translateY(-2px);
}

/* --- 9. PROJECTS SECTION (ASYMMETRIC + PREVIEW) --- */
.projects-showcase {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 3rem;
  align-items: start;
}

.projects-list {
  display: grid;
  gap: 1rem;
}

.project-card {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) auto;
  gap: 1.5rem;
  padding: 1.6rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: var(--blur);
  transition: transform var(--transition), border-color var(--transition), background-color var(--transition), box-shadow var(--transition);
}

.project-card:hover,
.project-card.is-active {
  transform: translateY(-3px);
  border-color: rgba(15, 23, 42, 0.16);
  background: rgba(15, 23, 42, 0.03); /* Clean light grey */
  box-shadow: var(--shadow-hover);
}

:root[data-theme="dark"] .project-card:hover,
:root[data-theme="dark"] .project-card.is-active {
  background: rgba(255, 255, 255, 0.05); /* Premium dark grey */
  border-color: rgba(255, 255, 255, 0.16);
}

.project-index {
  font-family: "Space Grotesk", sans-serif;
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--muted);
  line-height: 1;
  opacity: 0.6;
  transition: color var(--transition), opacity var(--transition);
}

.project-card:hover .project-index,
.project-card.is-active .project-index {
  color: var(--accent);
  opacity: 1;
}

.project-body {
  display: grid;
  gap: 0.5rem;
}

.project-tag {
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin: 0;
}

.project-body h3 {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.35rem;
  margin: 0;
}

.project-body p {
  margin: 0 0 0.5rem;
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--muted-strong);
}

.project-body ul {
  display: none; /* Sub-features only on details page */
}

.project-cta {
  align-self: center;
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 0.25rem;
  transition: color var(--transition), transform var(--transition);
}

.project-cta::after {
  content: "→";
  font-size: 1rem;
  transition: transform var(--transition);
}

.project-card:hover .project-cta {
  color: var(--accent);
}

.project-card:hover .project-cta::after {
  transform: translateX(3px);
}

/* Premium Project Preview Mockup */
.project-preview {
  position: sticky;
  top: 7rem;
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: var(--blur);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  min-height: 480px;
}

.project-preview span {
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
}

.project-preview strong {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.5rem;
  line-height: 1.15;
  margin: 0;
}

.project-preview p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--muted-strong);
}

.project-preview .project-live-link {
  align-self: flex-start;
  gap: 0.5rem;
}

.project-preview .project-live-link[hidden] {
  display: none;
}

/* Browser Mockup inside Preview */
.browser-mockup {
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  background: var(--bg-soft);
  box-shadow: var(--shadow);
  overflow: hidden;
  height: 220px;
  display: flex;
  flex-direction: column;
  margin-top: auto;
  position: relative;
}

.browser-header {
  height: 2.2rem;
  background: var(--panel-strong);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 0.85rem;
}

.browser-dots {
  display: flex;
  gap: 0.35rem;
}

.browser-dots span {
  width: 8px;
  height: 8px;
  border-radius: 99px;
  background: rgba(15, 23, 42, 0.12);
}

:root[data-theme="dark"] .browser-dots span {
  background: rgba(255, 255, 255, 0.12);
}

.browser-dots span:nth-child(1) { background: #ef4444; }
.browser-dots span:nth-child(2) { background: #f59e0b; }
.browser-dots span:nth-child(3) { background: #10b981; }

.browser-address {
  width: 60%;
  height: 1.35rem;
  background: var(--bg);
  border-radius: 4px;
  font-size: 0.68rem;
  color: var(--muted);
  font-family: monospace;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0.02em;
}

.browser-content {
  flex: 1;
  background: #020617; /* Always dark browser workspace */
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.browser-content img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.85;
}

.project-preview .preview-badge {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.25rem 0.55rem;
  border-radius: 6px;
  color: #ffffff;
  background: var(--accent);
  box-shadow: 0 4px 12px var(--accent-soft);
}

/* --- 10. RESUME / CV SECTION --- */
.resume-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
  gap: 2rem;
}

.resume-panel {
  padding: 1.8rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: var(--blur);
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: 1.5rem;
}

.resume-panel h3 {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.35rem;
  margin: 0;
}

.resume-panel ul {
  margin: 0;
  padding: 0 0 0 1.2rem;
  display: grid;
  gap: 0.75rem;
}

.resume-panel li {
  font-size: 1.02rem;
  line-height: 1.55;
  color: var(--muted-strong);
}

.resume-panel .button {
  margin-top: auto;
  align-self: flex-start;
}

/* --- 11. CONTACT SECTION (PREMIUM CARDS) --- */
.contact-section {
  padding-bottom: 6rem;
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(290px, 0.8fr);
  gap: 3rem;
  align-items: start;
}

.contact-copy {
  display: grid;
  gap: 1rem;
}

.contact-copy p {
  margin: 0;
  font-size: 1.12rem;
  line-height: 1.65;
  color: var(--muted-strong);
  max-width: 44ch;
}

.contact-list {
  display: grid;
  gap: 0.85rem;
}

.contact-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 1.4rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--panel);
  box-shadow: var(--shadow);
  transition: transform var(--transition), border-color var(--transition), background-color var(--transition), box-shadow var(--transition);
}

.contact-item:hover {
  transform: translateX(4px);
  border-color: var(--border-strong);
  background: var(--bg-soft);
  box-shadow: var(--shadow-hover);
}

.contact-info {
  display: grid;
  gap: 0.2rem;
}

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

.contact-info strong {
  font-size: 0.98rem;
  color: var(--text);
}

.contact-link-icon {
  font-size: 1.45rem;
  color: var(--accent);
  transition: transform var(--transition);
}

.contact-item:hover .contact-link-icon {
  transform: rotate(8deg) scale(1.1);
}

/* --- 12. UTILITY ANIMATIONS (REVEAL) --- */
.reveal {
  opacity: 0;
  transition: opacity 500ms var(--ease-out);
  transition-delay: var(--delay, 0ms);
}

.reveal.is-visible {
  opacity: 1;
}

/* --- 13. MODALS (VIDEO INTRODUCTION) --- */
.video-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms var(--ease-out);
}

.video-modal.is-open {
  opacity: 1;
  pointer-events: auto;
}

.video-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(8px);
}

:root[data-theme="dark"] .video-modal-backdrop {
  background: rgba(2, 6, 12, 0.76);
}

.video-modal-dialog {
  position: relative;
  z-index: 10;
  width: min(960px, 100%);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding: 1.5rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  background: var(--panel-strong);
  box-shadow: var(--shadow-hover);
}

.video-modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.video-modal-head p {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
}

.video-modal-head h3 {
  margin: 0.15rem 0 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.35rem;
}

.video-modal-close {
  min-height: 2.3rem;
  padding: 0 0.95rem;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--bg-soft);
  color: var(--text);
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  transition: border-color var(--transition), background-color var(--transition);
}

.video-modal-close:hover {
  border-color: var(--text);
}

.video-frame {
  overflow: hidden;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: #020617;
}

.video-frame video {
  display: block;
  width: 100%;
  max-height: min(65vh, 540px);
}

/* --- 14. KEYFRAMES --- */
@keyframes pulsingGlow {
  0% { box-shadow: 0 0 0 0 var(--accent-soft); }
  70% { box-shadow: 0 0 0 6px var(--accent-soft); }
  100% { box-shadow: 0 0 0 0 var(--accent-soft); }
}

@keyframes telemetryPulse {
  0% { transform: translateX(-40%); }
  100% { transform: translateX(-15%); }
}

/* --- 15. RESPONSIVE MEDIA QUERIES --- */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3.5rem;
  }
  
  .hero-copy {
    padding-top: 1.5rem;
  }
  
  .bento-grid,
  .skills-grid,
  .projects-showcase,
  .resume-layout,
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .bento-bio {
    grid-column: span 1;
    grid-row: span 1;
  }
  
  .project-preview {
    position: relative;
    top: 0;
    min-height: auto;
  }
}

@media (max-width: 768px) {
  .site-header {
    width: calc(100% - 1.5rem);
    top: 0.75rem;
    padding: 0.6rem 1.2rem;
  }
  
  .site-nav {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 0;
    right: 0;
    width: 100%;
    padding: 0.85rem;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-lg);
    background: var(--panel-strong);
    backdrop-filter: var(--blur);
    box-shadow: var(--shadow-hover);
    display: grid;
    gap: 0.25rem;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity var(--transition), transform var(--transition);
  }
  
  .site-nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }
  
  .site-nav a {
    padding: 0.6rem 1rem;
    border-radius: var(--radius-sm);
  }
  
  .site-nav a::after {
    display: none;
  }
  
  .site-nav a:hover {
    background: rgba(15, 23, 42, 0.04);
  }
  
  :root[data-theme="dark"] .site-nav a:hover {
    background: rgba(255, 255, 255, 0.04);
  }
  
  .nav-toggle {
    display: inline-flex;
  }
  
  .hero-proof {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .hero-proof-item {
    grid-template-columns: 100px 1fr;
    gap: 1rem;
    align-items: center;
  }
  
  .ops-node {
    min-width: 5.2rem;
    min-height: 2.3rem;
    font-size: 0.8rem;
  }
  
  .ops-node-main { left: 44%; }
  .ops-node-hardware { left: 4%; }
  .ops-node-linux { right: 4%; }
  .ops-node-network { left: 14%; }
  
  .project-card {
    grid-template-columns: 1fr;
    gap: 0.85rem;
  }
  
  .project-cta {
    justify-self: start;
  }
  
  .contact-item:hover {
    transform: none;
  }
}

@media (max-width: 500px) {
  .hero-actions .button {
    width: 100%;
  }
  
  .ops-readout {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }
  
  .ops-map {
    height: 210px;
  }
  
  .ops-node-main { top: 46%; left: 34%; }
  .ops-node-hardware { top: 8%; left: 4%; }
  .ops-node-linux { top: 8%; right: 4%; }
  .ops-node-network { bottom: 8%; left: 8%; }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
  
  .reveal {
    opacity: 1;
    transform: none;
  }
  
  .ops-meter span {
    animation: none;
    transform: none;
  }
}