/* =========================================================
   JIBIN EARNEST — PORTFOLIO
   Design language: "Signal Loop" — instrumentation-inspired
   dark UI. Tag-numbered sections, loop-line dividers, gauge
   motifs drawn from calibration & P&ID visual language.
   ========================================================= */

/* ---------- Design Tokens ---------- */
:root {
  --bg: #030712;
  --bg-elevated: #070c1a;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-strong: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.16);

  --primary: #2563eb;
  --primary-rgb: 37, 99, 235;
  --accent: #38bdf8;
  --accent-rgb: 56, 189, 248;
  --signal: #f59e0b; /* live/status amber, used sparingly */

  --text-1: #f5f7fb;
  --text-2: #aab2c5;
  --text-3: #6b7386;

  --grad-primary: linear-gradient(135deg, var(--primary), var(--accent));
  --grad-glow: radial-gradient(circle, rgba(var(--accent-rgb), 0.35), transparent 70%);

  --font-display: 'Space Grotesk', 'Poppins', sans-serif;
  --font-body: 'Poppins', system-ui, sans-serif;

  --radius-s: 10px;
  --radius-m: 18px;
  --radius-l: 28px;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --transition: 0.4s var(--ease);

  --container: 1240px;
  --nav-h: 84px;
}

[data-theme="light"] {
  --bg: #f4f6fb;
  --bg-elevated: #ffffff;
  --surface: rgba(15, 23, 42, 0.04);
  --surface-strong: rgba(15, 23, 42, 0.07);
  --border: rgba(15, 23, 42, 0.09);
  --border-strong: rgba(15, 23, 42, 0.16);
  --text-1: #0b1220;
  --text-2: #444e63;
  --text-3: #7b8496;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: auto; }
html, body { background: var(--bg); }
body {
  font-family: var(--font-body);
  color: var(--text-1);
  background: var(--bg);
  overflow-x: hidden;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background var(--transition), color var(--transition);
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, textarea { font: inherit; color: inherit; }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; letter-spacing: -0.02em; line-height: 1.1; }

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.container { max-width: var(--container); margin: 0 auto; padding: 0 32px; }

/* ---------- Utility ---------- */
.text-grad {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.glass-card {
  background: linear-gradient(180deg, var(--surface), var(--surface-strong));
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 20px 60px -30px rgba(0, 0, 0, 0.7);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 30px;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition), border-color var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--grad-primary);
  color: #fff;
  box-shadow: 0 12px 30px -10px rgba(var(--primary-rgb), 0.55);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 18px 40px -12px rgba(var(--primary-rgb), 0.7); }
.btn-outline {
  background: transparent;
  color: var(--text-1);
  border: 1.5px solid var(--border-strong);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-3px); }
.btn-small { padding: 11px 20px; font-size: 0.85rem; }
.btn-block { width: 100%; }

.section { position: relative; padding: 140px 0; }
.section-alt { background: linear-gradient(180deg, transparent, rgba(var(--primary-rgb), 0.035) 20%, rgba(var(--primary-rgb), 0.035) 80%, transparent); }

.section-tag {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 18px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.section-tag::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--accent);
  display: inline-block;
}
.section-title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  max-width: 780px;
  margin-bottom: 20px;
}
.section-sub {
  color: var(--text-2);
  max-width: 560px;
  font-size: 1.05rem;
  margin-bottom: 56px;
}

/* ---------- Loading Screen ---------- */
.loader {
  position: fixed; inset: 0; z-index: 9999;
  background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.7s var(--ease), visibility 0.7s var(--ease);
}
.loader.loaded { opacity: 0; visibility: hidden; pointer-events: none; }
.loader-inner { display: flex; flex-direction: column; align-items: center; gap: 20px; }
.loader-gauge { width: 90px; height: 90px; transform: rotate(-90deg); }
.loader-track { fill: none; stroke: var(--border-strong); stroke-width: 4; }
.loader-needle {
  fill: none; stroke: url(#none);
  stroke: var(--accent);
  stroke-width: 4;
  stroke-linecap: round;
  stroke-dasharray: 327;
  stroke-dashoffset: 327;
  transition: stroke-dashoffset 0.2s linear;
}
.loader-text { text-align: center; font-family: var(--font-display); }
.loader-tag { display: block; font-size: 0.75rem; letter-spacing: 0.2em; color: var(--accent); margin-bottom: 4px; }
.loader-label { font-size: 0.85rem; color: var(--text-2); letter-spacing: 0.05em; }
.loader-percent { font-family: var(--font-display); font-size: 1.4rem; color: var(--text-1); }

/* ---------- Custom Cursor ---------- */
.cursor-dot, .cursor-ring { position: fixed; top: 0; left: 0; pointer-events: none; z-index: 9998; border-radius: 50%; transform: translate(-50%, -50%); }
.cursor-dot { width: 7px; height: 7px; background: var(--accent); }
.cursor-ring { width: 34px; height: 34px; border: 1.5px solid rgba(var(--accent-rgb), 0.5); transition: width 0.25s var(--ease), height 0.25s var(--ease), border-color 0.25s var(--ease); }
.cursor-ring.active { width: 54px; height: 54px; border-color: var(--accent); }
@media (hover: none), (pointer: coarse) { .cursor-dot, .cursor-ring { display: none; } }

/* ---------- Scroll Progress ---------- */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0%;
  background: var(--grad-primary); z-index: 9997;
  box-shadow: 0 0 12px rgba(var(--accent-rgb), 0.7);
}

/* ---------- Animated Background ---------- */
.bg-canvas { position: fixed; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }
#particleCanvas { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.55; }
.bg-grid {
  position: absolute; inset: -2px;
  background-image:
    linear-gradient(rgba(var(--primary-rgb), 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(var(--primary-rgb), 0.07) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 90%);
}
.bg-blob { position: absolute; border-radius: 50%; filter: blur(110px); opacity: 0.35; }
.bg-blob-1 { width: 520px; height: 520px; background: var(--primary); top: -120px; left: -140px; animation: blobFloat 18s ease-in-out infinite; }
.bg-blob-2 { width: 460px; height: 460px; background: var(--accent); bottom: -160px; right: -120px; animation: blobFloat 22s ease-in-out infinite reverse; }
@keyframes blobFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(60px, 40px) scale(1.12); }
}
.mouse-glow {
  position: absolute; width: 480px; height: 480px; border-radius: 50%;
  background: var(--grad-glow);
  transform: translate(-50%, -50%);
  left: 50%; top: 50%;
  opacity: 0; transition: opacity 0.4s ease;
}

/* ---------- Navbar ---------- */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--nav-h);
  display: flex; align-items: center;
  transition: background var(--transition), border-color var(--transition), height var(--transition), backdrop-filter var(--transition);
  border-bottom: 1px solid transparent;
}
.navbar.scrolled {
  height: 68px;
  background: rgba(3, 7, 18, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--border);
}
[data-theme="light"] .navbar.scrolled { background: rgba(244, 246, 251, 0.78); }
.navbar-inner { display: flex; align-items: center; justify-content: space-between; width: 100%; }

.nav-logo { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-size: 1.15rem; font-weight: 600; }
.nav-logo-mark { width: 30px; height: 30px; color: var(--accent); }
.nav-logo-mark svg { width: 100%; height: 100%; }
.nav-logo-text em { font-style: normal; color: var(--accent); }

.nav-links { display: flex; gap: 8px; }
.nav-link {
  display: flex; align-items: center; gap: 6px;
  padding: 8px 14px; border-radius: 999px;
  font-size: 0.88rem; color: var(--text-2);
  transition: color var(--transition), background var(--transition);
}
.nav-link span { font-size: 0.68rem; color: var(--accent); font-family: var(--font-display); }
.nav-link:hover, .nav-link.active { color: var(--text-1); background: var(--surface); }

.nav-actions { display: flex; align-items: center; gap: 14px; }
.theme-toggle {
  width: 40px; height: 40px; border-radius: 50%;
  border: 1px solid var(--border); display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
}
.theme-toggle i { position: absolute; font-size: 1rem; transition: transform 0.4s var(--ease), opacity 0.4s var(--ease); }
.theme-toggle .fa-moon { opacity: 1; transform: translateY(0); color: var(--accent); }
.theme-toggle .fa-sun { opacity: 0; transform: translateY(20px); color: var(--signal); }
[data-theme="light"] .theme-toggle .fa-moon { opacity: 0; transform: translateY(-20px); }
[data-theme="light"] .theme-toggle .fa-sun { opacity: 1; transform: translateY(0); }

.hamburger { display: none; width: 40px; height: 40px; flex-direction: column; align-items: center; justify-content: center; gap: 5px; }
.hamburger span { width: 20px; height: 2px; background: var(--text-1); transition: transform 0.35s var(--ease), opacity 0.35s var(--ease); }
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Mobile Menu ---------- */
.mobile-menu {
  position: fixed; inset: 0; z-index: 999;
  background: var(--bg-elevated);
  display: flex; flex-direction: column; justify-content: space-between;
  padding: calc(var(--nav-h) + 20px) 32px 40px;
  transform: translateX(100%);
  transition: transform 0.5s var(--ease);
}
.mobile-menu.active { transform: translateX(0); }
.mobile-menu nav { display: flex; flex-direction: column; gap: 6px; }
.mobile-link {
  font-family: var(--font-display); font-size: 1.6rem; font-weight: 600;
  padding: 14px 0; border-bottom: 1px solid var(--border);
  display: flex; gap: 16px; align-items: baseline; color: var(--text-2);
}
.mobile-link span { color: var(--text-1); }
.mobile-link:hover { color: var(--accent); }
.mobile-menu-footer { display: flex; flex-direction: column; gap: 8px; color: var(--text-2); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center;
  padding-top: var(--nav-h);
  overflow: hidden;
}
.hero-frame { position: absolute; inset: 24px; border: 1px solid var(--border); border-radius: var(--radius-l); pointer-events: none; z-index: 1; }
.hero-frame-tag, .hero-frame-coord {
  position: absolute; font-family: var(--font-display); font-size: 0.7rem; letter-spacing: 0.14em; color: var(--text-3);
}
.hero-frame-tag { top: -11px; left: 28px; background: var(--bg); padding: 0 10px; }
.hero-frame-coord { bottom: -11px; right: 28px; background: var(--bg); padding: 0 10px; }

.hero-grid { position: relative; z-index: 2; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 60px; align-items: center; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-display); font-size: 0.8rem; letter-spacing: 0.1em;
  color: var(--text-2); margin-bottom: 24px;
  padding: 8px 16px; border: 1px solid var(--border); border-radius: 999px;
}
.eyebrow-dot { width: 8px; height: 8px; border-radius: 50%; background: #22c55e; box-shadow: 0 0 0 0 rgba(34,197,94,0.6); animation: pulseDot 1.8s infinite; }
.live-text { color: var(--text-1); font-weight: 600; }
@keyframes pulseDot { 0% { box-shadow: 0 0 0 0 rgba(34,197,94,0.6); } 70% { box-shadow: 0 0 0 10px rgba(34,197,94,0); } 100% { box-shadow: 0 0 0 0 rgba(34,197,94,0); } }

.hero-title { font-size: clamp(2.4rem, 5vw, 4.2rem); margin-bottom: 26px; }
.hero-title-line { display: block; }
.typed-role { color: var(--accent); }
.typed-cursor { color: var(--accent); animation: blink 0.9s infinite; font-weight: 300; }
@keyframes blink { 50% { opacity: 0; } }

.hero-desc { color: var(--text-2); font-size: 1.1rem; max-width: 540px; margin-bottom: 40px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 40px; }
.hero-social { display: flex; gap: 12px; }

.social-icon {
  width: 46px; height: 46px; border-radius: 50%;
  border: 1px solid var(--border); display: flex; align-items: center; justify-content: center;
  color: var(--text-2); transition: color var(--transition), border-color var(--transition), transform var(--transition), background var(--transition);
}
.social-icon:hover { color: var(--bg); background: var(--accent); border-color: var(--accent); transform: translateY(-4px); }

.hero-visual { position: relative; display: flex; justify-content: center; }
.hero-photo-frame { position: relative; width: 360px; height: 420px; }
.hero-photo-glow {
  position: absolute; inset: -30px; border-radius: var(--radius-l);
  background: var(--grad-glow); filter: blur(40px); opacity: 0.6; z-index: -1;
}
.hero-photo-placeholder {
  width: 100%; height: 100%; border-radius: var(--radius-l);
  background: linear-gradient(160deg, var(--surface-strong), var(--surface));
  border: 1px solid var(--border-strong);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px;
  color: var(--text-3); text-align: center; font-size: 0.85rem;
  position: relative; overflow: hidden;
}
.hero-photo-placeholder i { font-size: 3.2rem; color: var(--text-3); }
.hero-photo-ring { position: absolute; inset: 14px; border: 1.5px dashed var(--border-strong); border-radius: calc(var(--radius-l) - 6px); pointer-events: none; }

.floating-chip {
  position: absolute; display: flex; align-items: center; gap: 8px;
  padding: 10px 16px; border-radius: 999px;
  background: var(--bg-elevated); border: 1px solid var(--border-strong);
  font-family: var(--font-display); font-size: 0.78rem; font-weight: 600;
  box-shadow: 0 14px 30px -12px rgba(0,0,0,0.6);
  animation: floatChip 5s ease-in-out infinite;
}
.floating-chip i { color: var(--accent); }
.chip-1 { top: 6%; left: -14%; animation-delay: 0s; }
.chip-2 { bottom: 16%; right: -16%; animation-delay: 1.2s; }
.chip-3 { top: 48%; left: -20%; animation-delay: 2.4s; }
@keyframes floatChip { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }

.scroll-indicator {
  position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  z-index: 3; color: var(--text-3);
}
.scroll-indicator-track { width: 26px; height: 42px; border: 1.5px solid var(--border-strong); border-radius: 20px; display: flex; justify-content: center; padding-top: 8px; }
.scroll-indicator-dot { width: 4px; height: 8px; border-radius: 4px; background: var(--accent); animation: scrollDot 1.8s infinite; }
@keyframes scrollDot { 0% { transform: translateY(0); opacity: 1; } 70% { transform: translateY(12px); opacity: 0; } 100% { opacity: 0; } }
.scroll-indicator-text { font-size: 0.7rem; letter-spacing: 0.16em; font-family: var(--font-display); }

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 60px; align-items: start; }
.about-text p { color: var(--text-2); margin-bottom: 20px; font-size: 1.02rem; }
.about-mission { color: var(--text-1) !important; }
.about-mission strong { color: var(--accent); }

.about-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.stat-card { padding: 28px 22px; text-align: left; display: flex; flex-direction: column; gap: 8px; transition: transform var(--transition), border-color var(--transition); }
.stat-card:hover { transform: translateY(-6px); border-color: var(--border-strong); }
.stat-icon { color: var(--accent); font-size: 1.3rem; margin-bottom: 4px; }
.stat-number { font-family: var(--font-display); font-size: 2.4rem; font-weight: 700; }
.stat-label { color: var(--text-2); font-size: 0.88rem; }

/* ---------- Skills ---------- */
.skills-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin-bottom: 44px; }
.skill-category { padding: 32px; }
.skill-category-head { display: flex; align-items: center; gap: 14px; margin-bottom: 26px; }
.skill-category-icon { width: 46px; height: 46px; border-radius: var(--radius-s); background: rgba(var(--primary-rgb), 0.15); color: var(--accent); display: flex; align-items: center; justify-content: center; font-size: 1.15rem; }
.skill-category-head h3 { font-size: 1.05rem; }
.skill-bars { display: flex; flex-direction: column; gap: 18px; }
.skill-bar-top { display: flex; justify-content: space-between; font-size: 0.88rem; margin-bottom: 8px; color: var(--text-2); }
.skill-bar-pct { color: var(--accent); font-family: var(--font-display); }
.skill-bar-track { height: 8px; border-radius: 999px; background: var(--surface-strong); overflow: hidden; }
.skill-bar-fill { height: 100%; width: 0%; border-radius: 999px; background: var(--grad-primary); position: relative; transition: width 1.4s var(--ease); }
.skill-bar-fill::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent); animation: shimmer 2.4s infinite; }
@keyframes shimmer { 0% { transform: translateX(-100%); } 100% { transform: translateX(300%); } }

.skill-tools { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.skill-tool-label { color: var(--text-3); font-size: 0.9rem; }
.skill-tags { display: flex; gap: 10px; flex-wrap: wrap; }
.skill-tag { padding: 8px 16px; border-radius: 999px; border: 1px solid var(--border); font-size: 0.82rem; color: var(--text-2); transition: border-color var(--transition), color var(--transition); }
.skill-tag:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- Timeline ---------- */
.timeline { position: relative; max-width: 900px; margin: 0 auto; }
.timeline-line { position: absolute; left: 29px; top: 8px; bottom: 8px; width: 2px; background: linear-gradient(var(--border-strong), transparent); }
.timeline-item { position: relative; display: grid; grid-template-columns: 60px 1fr; gap: 24px; margin-bottom: 40px; }
.timeline-item:last-child { margin-bottom: 0; }
.timeline-node {
  width: 60px; height: 60px; border-radius: 50%;
  background: var(--bg-elevated); border: 1.5px solid var(--border-strong);
  display: flex; align-items: center; justify-content: center; z-index: 1;
  box-shadow: 0 0 0 6px var(--bg);
}
.timeline-node span { font-family: var(--font-display); font-size: 0.62rem; font-weight: 700; color: var(--accent); letter-spacing: 0.05em; text-align: center; }
.timeline-card { padding: 30px; }
.timeline-card-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; margin-bottom: 8px; }
.timeline-card-head h3 { font-size: 1.2rem; margin-bottom: 4px; }
.timeline-company { color: var(--accent); font-size: 0.92rem; }
.timeline-flag { font-size: 0.82rem; padding: 6px 12px; border-radius: 999px; border: 1px solid var(--border); white-space: nowrap; }
.timeline-dates { display: inline-flex; align-items: center; gap: 8px; color: var(--text-3); font-size: 0.85rem; margin-bottom: 4px; }
.timeline-location { color: var(--text-3); font-size: 0.85rem; margin-bottom: 16px; display: flex; align-items: center; gap: 8px; }
.timeline-resp { display: flex; flex-direction: column; gap: 10px; }
.timeline-resp li { position: relative; padding-left: 20px; color: var(--text-2); font-size: 0.94rem; }
.timeline-resp li::before { content: ""; position: absolute; left: 0; top: 9px; width: 7px; height: 7px; border-radius: 2px; background: var(--accent); transform: rotate(45deg); }

/* ---------- Certifications ---------- */
.cert-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 60px; }
.cert-card { padding: 32px; text-align: left; }
.cert-icon { width: 54px; height: 54px; border-radius: var(--radius-s); background: rgba(var(--accent-rgb), 0.12); color: var(--accent); display: flex; align-items: center; justify-content: center; font-size: 1.3rem; margin-bottom: 20px; }
.cert-card h3 { font-size: 1.05rem; margin-bottom: 12px; }
.cert-card p { color: var(--text-2); font-size: 0.9rem; margin-bottom: 16px; }
.cert-duration { font-size: 0.8rem; color: var(--text-3); display: inline-flex; gap: 6px; align-items: center; }

.education-strip { display: flex; flex-direction: column; gap: 0; border-top: 1px solid var(--border); }
.edu-item { display: flex; gap: 30px; padding: 22px 4px; border-bottom: 1px solid var(--border); align-items: baseline; }
.edu-year { font-family: var(--font-display); color: var(--accent); font-weight: 700; font-size: 1.05rem; min-width: 60px; }
.edu-item h4 { font-size: 1rem; margin-bottom: 4px; }
.edu-item p { color: var(--text-3); font-size: 0.86rem; }

/* ---------- Project Gallery ---------- */
.project-gallery { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.project-card { overflow: hidden; cursor: pointer; transition: transform var(--transition); }
.project-card:hover { transform: translateY(-8px); }
.project-media { position: relative; height: 220px; overflow: hidden; }
.project-media-fallback {
  width: 100%; height: 100%; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(var(--primary-rgb), 0.25), rgba(var(--accent-rgb), 0.15));
  font-size: 3rem; color: rgba(255,255,255,0.5);
}
.project-overlay {
  position: absolute; inset: 0; background: rgba(3,7,18,0.6);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: opacity var(--transition);
}
.project-card:hover .project-overlay { opacity: 1; }
.project-view { font-family: var(--font-display); font-size: 0.88rem; color: #fff; display: flex; align-items: center; gap: 8px; }
.project-info { padding: 24px; }
.project-tag { font-size: 0.75rem; color: var(--accent); letter-spacing: 0.06em; text-transform: uppercase; }
.project-info h3 { font-size: 1.1rem; margin: 8px 0 6px; }
.project-info p { color: var(--text-3); font-size: 0.88rem; }

/* Project Modal */
.project-modal { position: fixed; inset: 0; z-index: 2000; display: flex; align-items: center; justify-content: center; padding: 24px; opacity: 0; visibility: hidden; transition: opacity 0.35s var(--ease), visibility 0.35s var(--ease); }
.project-modal.active { opacity: 1; visibility: visible; }
.project-modal-backdrop { position: absolute; inset: 0; background: rgba(3,7,18,0.75); backdrop-filter: blur(6px); }
.project-modal-panel { position: relative; max-width: 560px; width: 100%; padding: 44px; transform: translateY(30px) scale(0.96); transition: transform 0.4s var(--ease); }
.project-modal.active .project-modal-panel { transform: translateY(0) scale(1); }
.project-modal-close { position: absolute; top: 20px; right: 20px; width: 38px; height: 38px; border-radius: 50%; border: 1px solid var(--border); display: flex; align-items: center; justify-content: center; }
.project-modal-tag { color: var(--accent); font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase; }
.project-modal-panel h3 { font-size: 1.5rem; margin: 12px 0 8px; }
.project-modal-meta { color: var(--text-3); font-size: 0.86rem; margin-bottom: 18px; }
.project-modal-desc { color: var(--text-2); line-height: 1.7; }

/* ---------- Services ---------- */
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.service-card { padding: 34px; transition: transform var(--transition), border-color var(--transition); }
.service-card:hover { transform: translateY(-8px); border-color: var(--border-strong); }
.service-icon { width: 54px; height: 54px; border-radius: var(--radius-s); background: var(--grad-primary); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 1.3rem; margin-bottom: 22px; }
.service-card h3 { font-size: 1.08rem; margin-bottom: 12px; }
.service-card p { color: var(--text-2); font-size: 0.92rem; }

/* ---------- Testimonials (empty state) ---------- */
.testimonial-empty { max-width: 640px; padding: 56px; text-align: center; display: flex; flex-direction: column; align-items: center; gap: 14px; }
.testimonial-empty-icon { width: 56px; height: 56px; border-radius: 50%; background: var(--surface-strong); display: flex; align-items: center; justify-content: center; color: var(--accent); font-size: 1.3rem; margin-bottom: 6px; }
.testimonial-empty h3 { font-size: 1.2rem; }
.testimonial-empty p { color: var(--text-2); margin-bottom: 10px; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 30px; align-items: start; }
.contact-info { display: flex; flex-direction: column; gap: 14px; }
.contact-item { display: flex; align-items: center; gap: 16px; padding: 18px 22px; transition: transform var(--transition), border-color var(--transition); }
.contact-item.magnetic:hover { transform: translateY(-4px); border-color: var(--border-strong); }
.contact-icon { width: 46px; height: 46px; border-radius: 50%; background: rgba(var(--accent-rgb), 0.12); color: var(--accent); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.contact-label { display: block; font-size: 0.76rem; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.06em; }
.contact-value { display: block; font-size: 0.98rem; font-weight: 500; }
.contact-map { height: 180px; overflow: hidden; padding: 0; }
.contact-map iframe { width: 100%; height: 100%; border: 0; filter: grayscale(0.3) invert(0.92) contrast(0.9); }
[data-theme="light"] .contact-map iframe { filter: none; }

.contact-form { padding: 40px; display: flex; flex-direction: column; gap: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { display: flex; flex-direction: column; gap: 8px; position: relative; }
.form-group label { font-size: 0.85rem; color: var(--text-2); }
.form-group input, .form-group textarea {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-s);
  padding: 14px 16px; color: var(--text-1); transition: border-color var(--transition), background var(--transition);
  resize: vertical;
}
.form-group input:focus, .form-group textarea:focus { border-color: var(--accent); background: var(--surface-strong); }
.form-group.invalid input, .form-group.invalid textarea { border-color: #f87171; }
.form-error { font-size: 0.76rem; color: #f87171; min-height: 14px; }
.form-status { font-size: 0.88rem; color: var(--accent); text-align: center; min-height: 18px; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--border); padding-top: 80px; position: relative; z-index: 2; }
.footer-inner { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; padding-bottom: 60px; }
.footer-brand p { color: var(--text-3); margin: 18px 0 22px; font-size: 0.92rem; }
.footer-social { display: flex; gap: 10px; }
.footer-links h4 { font-size: 0.95rem; margin-bottom: 20px; }
.footer-links a, .footer-links span { display: block; color: var(--text-3); font-size: 0.9rem; margin-bottom: 12px; transition: color var(--transition); }
.footer-links a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid var(--border); padding: 26px 0; }
.footer-bottom-inner { display: flex; justify-content: space-between; align-items: center; }
.footer-bottom-inner p { color: var(--text-3); font-size: 0.85rem; }
.back-to-top { width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--border); display: flex; align-items: center; justify-content: center; transition: transform var(--transition), border-color var(--transition), color var(--transition); }
.back-to-top:hover { transform: translateY(-4px); border-color: var(--accent); color: var(--accent); }

/* ---------- Tilt card base ---------- */
.tilt-card { transform-style: preserve-3d; }

/* ---------- Reveal (JS-driven fallback classes) ---------- */
.reveal { opacity: 0; transform: translateY(40px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.reveal.in-view { opacity: 1; transform: translateY(0); }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 1080px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; margin-bottom: 20px; }
  .hero-photo-frame { width: 300px; height: 340px; }
  .about-grid { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .skills-grid { grid-template-columns: 1fr; }
  .project-gallery { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .container { padding: 0 20px; }
  .section { padding: 90px 0; }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .services-grid { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .timeline-item { grid-template-columns: 44px 1fr; gap: 14px; }
  .timeline-node { width: 44px; height: 44px; }
  .timeline-node span { font-size: 0.52rem; }
  .timeline-line { left: 21px; }
  .hero-actions .btn { flex: 1; }
  .floating-chip { display: none; }
  .nav-actions .btn { display: none; }
  .footer-bottom-inner { flex-direction: column; gap: 16px; text-align: center; }
}