/* ===== CSS VARIABLES ===== */
:root {
  --bg: #080808;
  --bg2: #0b0b0b;
  --bg3: #0e0e0e;
  --red: #e11d2c;
  --red-light: #ff3a47;
  --red-deep: #9b0a15;
  --white: #f1f5f9;
  --muted: #64748b;
  --muted2: #94a3b8;
  --card: rgba(255,255,255,0.03);
  --border: rgba(255,255,255,0.07);
  --border-red: rgba(225,29,44,0.25);
  --glow-red: 0 0 40px rgba(225,29,44,0.35);
  --glow-red-soft: 0 0 20px rgba(225,29,44,0.15);
  --font-head: 'Orbitron', monospace;
  --font-body: 'Rajdhani', sans-serif;
  --font-text: 'DM Sans', sans-serif;
}

/* ===== RESET ===== */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior: smooth; scroll-snap-type: y mandatory; }
body {
  background: var(--bg);
  color: var(--white);
  font-family: var(--font-text);
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
  cursor: none;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(var(--red-deep), var(--red-light));
  border-radius: 10px;
}

/* ===== GRID OVERLAY ===== */
.grid-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(rgba(225,29,44,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(225,29,44,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* ===== NOISE ===== */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  opacity: 0.35;
}

/* ===== CURSOR ===== */
#cursor-dot {
  position: fixed; width: 8px; height: 8px; border-radius: 50%;
  background: var(--red-light); pointer-events: none; z-index: 9999;
  transform: translate(-50%,-50%);
  box-shadow: 0 0 10px var(--red-light), 0 0 20px var(--red);
}
#cursor-ring {
  position: fixed; width: 32px; height: 32px; border-radius: 50%;
  border: 1.5px solid rgba(225,29,44,0.7); pointer-events: none; z-index: 9998;
  transform: translate(-50%,-50%); transition: all 0.12s ease-out;
}

/* ===== LOADER ===== */
#loader {
  position: fixed; inset: 0; z-index: 9990; background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}
#loader.hidden { opacity: 0; visibility: hidden; }
.loader-content {
  display: flex; flex-direction: column; align-items: center; gap: 1rem;
}
.loader-initials {
  font-family: var(--font-head);
  font-size: clamp(4rem,10vw,7rem);
  font-weight: 900;
  background: linear-gradient(135deg, #fff 0%, var(--red-light) 40%, var(--red) 70%, var(--red-deep) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  background-size: 300% 300%;
  animation: gradientShift 2s ease infinite;
  filter: drop-shadow(0 0 30px rgba(225,29,44,0.5));
  letter-spacing: 0.2em;
}
.loader-label {
  font-family: var(--font-body); font-size: 0.8rem; letter-spacing: 0.3em;
  color: var(--muted); text-transform: uppercase;
}
.loader-bar-wrap {
  width: min(300px,80vw); height: 3px;
  background: rgba(255,255,255,0.08); border-radius: 10px; overflow: hidden;
}
.loader-bar {
  height: 100%; width: 0; border-radius: 10px;
  background: linear-gradient(90deg, var(--red-deep), var(--red), var(--red-light), #fff);
  background-size: 300% 100%;
  animation: loaderFill 1.8s ease forwards, gradientSlide 1.5s linear infinite;
}
.loader-pct {
  font-family: var(--font-head); font-size: 0.75rem;
  color: var(--red-light); letter-spacing: 0.15em;
}
@keyframes loaderFill { to { width: 100%; } }
@keyframes gradientSlide { 0% { background-position: 0% 50%; } 100% { background-position: 300% 50%; } }
@keyframes gradientShift { 0%,100% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } }

/* ===== PARTICLES ===== */
#particles { position: fixed; inset: 0; z-index: 0; pointer-events: none; }

/* ===== NAVBAR ===== */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 1.2rem 5vw;
  display: flex; align-items: center; justify-content: space-between;
  background: rgba(8,8,8,0.8);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-red);
  transform: translateY(-100%);
  animation: slideDown 0.7s 2.3s cubic-bezier(0.16,1,0.3,1) forwards;
}
@keyframes slideDown { to { transform: translateY(0); } }

.nav-logo {
  font-family: var(--font-text);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--white);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.nav-links { display: flex; gap: 2rem; list-style: none; }
.nav-links a {
  font-family: var(--font-body); font-size: 0.85rem; font-weight: 600;
  color: var(--muted); text-decoration: none; letter-spacing: 0.12em;
  text-transform: uppercase; position: relative; padding-bottom: 3px;
  transition: color 0.3s;
}
.nav-links a::after {
  content: ""; position: absolute; bottom: 0; left: 0; right: 0;
  height: 1.5px; background: linear-gradient(90deg, var(--red), var(--red-light));
  transform: scaleX(0); transform-origin: left; transition: transform 0.3s ease;
}
.nav-links a:hover { color: var(--white); }
.nav-links a:hover::after { transform: scaleX(1); }

.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.hamburger span { width: 22px; height: 2px; background: var(--white); border-radius: 2px; transition: 0.3s; }

/* ===== MAIN / SECTIONS ===== */
main { position: relative; z-index: 2; }
section {
  min-height: 100vh;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  padding: 7rem 5vw;
  position: relative;
}

/* ===== HERO ===== */
#hero {
  min-height: 100vh; display: flex; align-items: center;
  padding: 100px 8%;
}
.hero-inner {
  width: 100%; max-width: 1200px; margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 4rem; align-items: center; position: relative; z-index: 1;
}
.hero-left { display: flex; flex-direction: column; gap: 1.4rem; }

.avail-tag {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.35rem 1rem; border-radius: 4px;
  border: 1px solid rgba(225,29,44,0.4);
  background: rgba(225,29,44,0.06);
  font-family: var(--font-body); font-size: 0.75rem; font-weight: 600;
  color: var(--red-light); letter-spacing: 0.15em; text-transform: uppercase;
  width: fit-content; animation: fadeUp 0.6s 2.5s both;
}
.avail-dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--red-light);
  animation: pulse 1.8s infinite;
}
@keyframes pulse {
  0%,100% { opacity:1; transform:scale(1); }
  50% { opacity:0.4; transform:scale(1.5); }
}

.hero-name {
  font-family: var(--font-head); font-weight: 900;
  font-size: clamp(2.8rem, 6.5vw, 5.5rem);
  line-height: 1; letter-spacing: 0.03em;
  color: var(--white);
  text-shadow: 0 0 60px rgba(225,29,44,0.2);
  animation: fadeUp 0.7s 2.6s both;
}
.hero-name-as {
  color: var(--red);
  text-shadow: 0 0 30px rgba(225,29,44,0.5);
}
.hero-role {
  font-family: var(--font-body); font-size: clamp(1rem,2vw,1.3rem);
  font-weight: 600; letter-spacing: 0.2em; color: var(--white);
  animation: fadeUp 0.7s 2.7s both;
}
.hero-dots {
  font-family: var(--font-body); font-size: 0.85rem;
  letter-spacing: 0.15em; color: var(--muted2);
  animation: fadeUp 0.7s 2.75s both;
}

.hero-btns {
  display: flex; gap: 1rem; flex-wrap: wrap;
  animation: fadeUp 0.7s 2.9s both;
}

/* ===== BUTTONS ===== */
.btn {
  padding: 0.7rem 1.6rem; border-radius: 4px;
  font-family: var(--font-body); font-weight: 700;
  font-size: 0.82rem; letter-spacing: 0.15em;
  text-transform: uppercase; cursor: pointer; text-decoration: none;
  transition: all 0.3s ease; border: none; display: inline-block;
}
.btn-primary {
  background: var(--red); color: #fff;
  box-shadow: 0 4px 20px rgba(225,29,44,0.4);
}
.btn-primary:hover {
  background: var(--red-light); transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(225,29,44,0.6);
}
.btn-outline {
  background: transparent; color: var(--white);
  border: 1px solid var(--border-red);
}
.btn-outline:hover {
  border-color: var(--red-light); color: var(--red-light);
  transform: translateY(-2px); box-shadow: var(--glow-red-soft);
}
.btn-ghost {
  background: transparent; color: var(--muted2);
  border: 1px solid rgba(255,255,255,0.08);
}
.btn-ghost:hover { color: var(--white); border-color: rgba(255,255,255,0.2); transform: translateY(-2px); }

/* ===== RPM BAR ===== */
.rpm-wrap { animation: fadeUp 0.7s 3.1s both; }
.rpm-header {
  display: flex; justify-content: space-between;
  font-family: var(--font-body); font-size: 0.78rem;
  letter-spacing: 0.15em; color: var(--muted); margin-bottom: 0.5rem;
}
.rpm-val { color: var(--red-light); font-weight: 700; }
.rpm-track {
  position: relative; height: 6px; background: rgba(255,255,255,0.06);
  border-radius: 3px; overflow: visible;
}
.rpm-bar {
  height: 100%; width: 0; border-radius: 3px;
  background: linear-gradient(90deg, var(--red-deep), var(--red), var(--red-light));
  transition: width 2s cubic-bezier(0.16,1,0.3,1);
  box-shadow: 0 0 10px rgba(225,29,44,0.5);
}
.rpm-redline {
  position: absolute; right: 12%; top: -3px; bottom: -3px;
  width: 2px; background: rgba(255,255,255,0.25); border-radius: 2px;
}
.rpm-ticks {
  display: flex; justify-content: space-between; margin-top: 0.4rem;
  font-family: var(--font-body); font-size: 0.65rem;
  letter-spacing: 0.1em; color: var(--muted);
}

/* ===== TELEMETRY CARD ===== */
.hero-right {
  display: flex; justify-content: center; align-items: center;
  animation: fadeUp 0.8s 2.6s both;
}
.telemetry-card {
  width: 100%; max-width: 420px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(225,29,44,0.2);
  border-radius: 8px;
  padding: 1.8rem;
  box-shadow: 0 30px 80px rgba(0,0,0,0.5), inset 0 1px 0 rgba(255,255,255,0.05);
}
.telemetry-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 1.5rem; padding-bottom: 1rem;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.telemetry-title {
  font-family: var(--font-body); font-size: 0.72rem;
  letter-spacing: 0.2em; color: var(--muted); font-weight: 600;
}
.telemetry-live { display: flex; align-items: center; gap: 0.4rem; }
.live-dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--red);
  box-shadow: 0 0 8px var(--red); animation: pulse 1.8s infinite;
}
.telemetry-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1px;
  margin-bottom: 1.5rem; border: 1px solid rgba(255,255,255,0.06);
  border-radius: 6px; overflow: hidden;
}
.telem-block {
  padding: 1.2rem; background: rgba(255,255,255,0.02);
  border-right: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.telem-label {
  font-family: var(--font-body); font-size: 0.65rem;
  letter-spacing: 0.2em; color: var(--muted); margin-bottom: 0.4rem;
  text-transform: uppercase;
}
.telem-val {
  font-family: var(--font-head); font-size: 1.3rem; font-weight: 700;
  color: var(--white); letter-spacing: 0.05em;
}
.telem-green { color: #4ade80; text-shadow: 0 0 12px rgba(74,222,128,0.4); }

.telemetry-bar-row {
  display: flex; align-items: center; gap: 0.8rem; margin-bottom: 0.8rem;
}
.telem-mini-label {
  font-family: var(--font-body); font-size: 0.65rem; letter-spacing: 0.15em;
  color: var(--muted); width: 70px; flex-shrink: 0;
}
.telem-mini-track {
  flex: 1; height: 5px; background: rgba(255,255,255,0.06); border-radius: 3px; overflow: hidden;
}
.telem-mini-bar {
  height: 100%; width: 0; border-radius: 3px;
  background: linear-gradient(90deg, var(--red-deep), var(--red-light));
  transition: width 2.5s cubic-bezier(0.16,1,0.3,1);
}
.telem-mini-bar.teal {
  background: linear-gradient(90deg, #0f766e, #2dd4bf);
}
.telem-mini-pct {
  font-family: var(--font-body); font-size: 0.7rem;
  color: var(--red-light); font-weight: 600; width: 32px; text-align: right;
}

/* ===== SECTION HEADER ===== */
.sec-header { text-align: left; margin-bottom: 3.5rem; }
.sec-eyebrow {
  font-family: var(--font-body); font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.3em; text-transform: uppercase; color: var(--red);
  margin-bottom: 0.6rem;
}
.sec-title {
  font-family: var(--font-head); font-weight: 800;
  font-size: clamp(1.8rem,4vw,2.8rem); line-height: 1.1;
  letter-spacing: 0.05em; color: var(--white);
}
.sec-title span { color: var(--red); }
.sec-line {
  width: 48px; height: 3px; margin-top: 1rem;
  background: linear-gradient(90deg, var(--red-deep), var(--red-light));
  border-radius: 10px; box-shadow: 0 0 10px rgba(225,29,44,0.5);
}

/* ===== SKILLS ===== */
#skills { background: var(--bg2); }
.skills-wrap {
  max-width: 860px; display: flex; flex-direction: column; gap: 1.4rem;
}
.skill-item {
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: 6px; padding: 1.2rem 1.5rem;
  opacity: 0; transform: translateX(-20px); transition: all 0.5s ease;
}
.skill-item.visible { opacity: 1; transform: translateX(0); }
.skill-meta {
  display: flex; justify-content: space-between; margin-bottom: 0.7rem;
}
.skill-name {
  font-family: var(--font-body); font-weight: 600; font-size: 0.95rem;
  letter-spacing: 0.1em; color: var(--white);
}
.skill-pct {
  font-family: var(--font-head); font-size: 0.8rem; color: var(--red-light);
}
.skill-bar-bg {
  height: 5px; background: rgba(255,255,255,0.06); border-radius: 3px; overflow: hidden;
}
.skill-bar {
  height: 100%; border-radius: 3px; width: 0;
  background: linear-gradient(90deg, var(--red-deep), var(--red-light));
  transition: width 1s cubic-bezier(0.16,1,0.3,1);
  box-shadow: 0 0 8px rgba(225,29,44,0.4);
}

/* chips */
.chips-wrap {
  margin-top: 3rem; display: flex; flex-wrap: wrap; gap: 0.6rem; max-width: 860px;
}
.chip {
  padding: 0.4rem 1rem; border-radius: 4px;
  border: 1px solid rgba(225,29,44,0.2);
  font-family: var(--font-body); font-size: 0.78rem; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase;
  background: rgba(225,29,44,0.04); color: var(--muted2);
  transition: all 0.3s ease; cursor: default;
}
.chip:hover {
  transform: translateY(-3px); border-color: var(--red-light);
  color: var(--red-light); box-shadow: 0 6px 16px rgba(225,29,44,0.2);
}

/* ===== PROJECTS ===== */
#projects { background: var(--bg); }
.projects-grid {
  max-width: 1100px;
  display: grid; grid-template-columns: repeat(2,1fr); gap: 1.5rem;
}
a.project-card { color: inherit; text-decoration: none; }
.project-card {
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.07);
  border-left: 3px solid var(--red-deep);
  border-radius: 6px; padding: 2rem;
  position: relative; overflow: hidden;
  transition: all 0.4s ease;
  opacity: 0; transform: translateY(30px);
}
.project-card.visible { opacity: 1; transform: translateY(0); }
.project-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(0,0,0,0.4), var(--glow-red-soft);
  border-left-color: var(--red-light);
  background: rgba(225,29,44,0.03);
}
.build-num {
  font-family: var(--font-body); font-size: 0.7rem; font-weight: 700;
  letter-spacing: 0.2em; color: var(--red); margin-bottom: 0.8rem;
}
.proj-name {
  font-family: var(--font-head); font-weight: 700; font-size: 1.15rem;
  letter-spacing: 0.05em; margin-bottom: 0.8rem; color: var(--white);
}
.proj-desc {
  font-size: 0.88rem; color: var(--muted2); line-height: 1.65; margin-bottom: 1.2rem;
}
.proj-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.proj-tag {
  font-family: var(--font-body); font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.7rem; border-radius: 3px;
  background: rgba(225,29,44,0.06); border: 1px solid rgba(225,29,44,0.2);
  color: var(--muted2);
}
.proj-github-hint {
  margin-top: 1.2rem; font-family: var(--font-body); font-size: 0.72rem;
  letter-spacing: 0.1em; color: var(--red); opacity: 0.7;
}
.project-card--link:hover .proj-github-hint { opacity: 1; }

/* ===== EDUCATION TIMELINE ===== */
#education { background: var(--bg2); }
.timeline-wrap {
  max-width: 800px; position: relative;
  display: flex; flex-direction: column; gap: 0;
}
.timeline-line {
  position: absolute; left: 16px; top: 0; bottom: 0;
  width: 2px; background: linear-gradient(180deg, var(--red), transparent);
}
.timeline-item {
  display: flex; gap: 2rem; padding: 0 0 2.5rem 0;
  opacity: 0; transform: translateX(-20px); transition: all 0.5s ease;
}
.timeline-item.visible { opacity: 1; transform: translateX(0); }
.timeline-dot {
  flex-shrink: 0; width: 34px; height: 34px;
  border-radius: 50%; border: 2px solid var(--red);
  display: flex; align-items: center; justify-content: center;
  background: var(--bg2); position: relative; z-index: 1;
  box-shadow: 0 0 16px rgba(225,29,44,0.4);
}
.timeline-dot-inner {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--red);
  animation: pulse 1.8s infinite;
}
.timeline-card {
  flex: 1; background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.07);
  border-left: 3px solid var(--red-deep);
  border-radius: 6px; padding: 1.5rem 2rem;
  transition: all 0.3s ease;
}
.timeline-card:hover {
  border-left-color: var(--red-light);
  box-shadow: var(--glow-red);
  background: rgba(225,29,44,0.02);
}
.timeline-round {
  font-family: var(--font-body); font-size: 0.68rem; font-weight: 700;
  letter-spacing: 0.25em; color: var(--red); margin-bottom: 0.4rem;
}
.timeline-year {
  font-family: var(--font-head); font-size: 0.75rem; color: var(--muted);
  letter-spacing: 0.1em; margin-bottom: 0.5rem;
}
.timeline-title {
  font-family: var(--font-body); font-weight: 700; font-size: 1.05rem;
  letter-spacing: 0.05em; color: var(--white); margin-bottom: 0.3rem;
}
.timeline-sub {
  font-size: 0.88rem; color: var(--muted2); margin-bottom: 0.8rem;
}
.timeline-badges { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.t-badge {
  font-family: var(--font-body); font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.1em; padding: 0.2rem 0.8rem; border-radius: 3px;
  background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1);
  color: var(--muted2);
}
.t-badge-red {
  background: rgba(225,29,44,0.08); border-color: rgba(225,29,44,0.3); color: var(--red-light);
}

/* ===== CONTACT ===== */
#contact { background: var(--bg); }
.contact-sub {
  font-size: 1rem; color: var(--muted2); margin-bottom: 2.5rem;
  max-width: 560px; line-height: 1.8;
}
.contact-grid {
  display: grid; grid-template-columns: repeat(2,1fr);
  gap: 1rem; max-width: 700px; margin-bottom: 1rem;
}
.contact-card {
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.07);
  border-left: 3px solid var(--red-deep);
  border-radius: 6px; padding: 1.2rem 1.5rem;
  text-decoration: none; color: var(--white);
  transition: all 0.3s ease;
}
.contact-card:hover {
  border-left-color: var(--red-light);
  box-shadow: var(--glow-red-soft);
  transform: translateY(-3px);
  background: rgba(225,29,44,0.03);
}
.contact-card-label {
  font-family: var(--font-body); font-size: 0.65rem; font-weight: 700;
  letter-spacing: 0.25em; color: var(--red); margin-bottom: 0.4rem;
}
.contact-card-val {
  font-family: var(--font-body); font-size: 0.95rem; font-weight: 600;
  color: var(--white); letter-spacing: 0.02em;
}

/* ===== FOOTER ===== */
footer {
  padding: 2.5rem 5vw; border-top: 1px solid var(--border-red);
  scroll-snap-align: start; position: relative; z-index: 2;
}
.footer-inner {
  max-width: 1100px; margin: 0 auto;
  display: flex; flex-direction: column; gap: 0.4rem;
}
.footer-logo {
  font-family: var(--font-text); font-weight: 700; font-size: 1rem; color: var(--white);
}
.footer-inner p { font-size: 0.82rem; color: var(--muted); }
.footer-inner p span { color: var(--muted2); }
.footer-tag {
  font-family: var(--font-body); font-size: 0.7rem !important;
  letter-spacing: 0.2em; color: var(--red) !important; margin-top: 0.4rem;
}

/* ===== ANIMATIONS ===== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-right { display: none; }
  .projects-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .projects-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .hamburger { display: flex; }
  section { padding: 5rem 6vw; }
  .sec-header { text-align: left; }
}