:root {
  --primary: #3b82f6;
  --primary-dark: #1d4ed8;
  --accent: #22c55e;
  --bg: #020617;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --glass: rgba(15, 23, 42, 0.82);
  --border: rgba(148, 163, 184, 0.28);
  --border-strong: rgba(59, 130, 246, 0.7);
  --shadow-lg: 0 28px 80px rgba(15, 23, 42, 0.85);
  --radius-lg: 18px;
  --radius-xl: 26px;
  --transition: 220ms ease;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI",
    sans-serif;
  background: radial-gradient(circle at top, #1e293b 0, #020617 55%, #000 100%);
  color: var(--text);
  min-height: 100vh;
}

/* ====== HEADER / NAV ====== */

header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(24px);
  background: linear-gradient(
    120deg,
    rgba(15, 23, 42, 0.94),
    rgba(15, 23, 42, 0.9),
    rgba(15, 23, 42, 0.96)
  );
  border-bottom: 1px solid var(--border);
  transition: background 280ms ease, box-shadow 280ms ease, border-color 220ms ease,
    transform 220ms ease;
}

/* hover effect when cursor moves on header */
header:hover {
  background: radial-gradient(circle at top, #0f172a 0, #020617 70%);
  border-color: var(--border-strong);
  box-shadow: 0 18px 60px rgba(15, 23, 42, 0.9);
  transform: translateY(-1px);
}

.nav-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
}

.logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 999px;
  background: conic-gradient(from 210deg, #22c55e, #3b82f6, #a855f7, #f97316, #22c55e);
  position: relative;
  padding: 2px;
}

.logo-mark-inner {
  width: 100%;
  height: 100%;
  border-radius: inherit;
  background: radial-gradient(circle at 30% 20%, #1f2937, #020617 70%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #e5e7eb;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.logo-text-main {
  font-size: 1.02rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.logo-text-sub {
  font-size: 0.7rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.9rem;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.35rem 0.6rem;
  border-radius: 999px;
  position: relative;
  overflow: hidden;
  transition: color var(--transition), background var(--transition), transform var(--transition),
    box-shadow var(--transition);
}

nav a::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(circle at top, rgba(56, 189, 248, 0.12), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

nav a:hover {
  color: #e5e7eb;
  background: rgba(15, 23, 42, 0.9);
  transform: translateY(-1px);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.7);
}

nav a:hover::after {
  opacity: 1;
}

nav a.active {
  color: #e5e7eb;
  background: rgba(59, 130, 246, 0.16);
  border: 1px solid rgba(59, 130, 246, 0.4);
}

.nav-cta {
  border-radius: 999px;
  padding: 0.38rem 0.95rem;
  background: linear-gradient(120deg, #22c55e, #3b82f6);
  color: #ecfeff;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  box-shadow: 0 12px 30px rgba(34, 197, 94, 0.4);
  transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
  text-decoration: none;
}

.nav-cta:hover {
  transform: translateY(-1px) scale(1.01);
  box-shadow: 0 16px 40px rgba(37, 99, 235, 0.45);
  filter: brightness(1.04);
}

/* ====== LAYOUT / SECTIONS ====== */

main {
  max-width: 1120px;
  margin: 0 auto;
  padding: 2.8rem 1.5rem 3.5rem;
}

section {
  margin-bottom: 5rem;
}

.section-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: 0.6rem;
}

.section-title {
  font-size: clamp(2.1rem, 3.4vw, 2.7rem);
  font-weight: 650;
  letter-spacing: 0.02em;
  margin-bottom: 0.6rem;
}

.section-lead {
  max-width: 720px;
  font-size: 0.98rem;
  color: var(--muted);
  line-height: 1.7;
}

.card {
  border-radius: var(--radius-xl);
  background: var(--glass);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
}

.card.pad {
  padding: 1.5rem 1.7rem;
}

/* ====== HERO ====== */

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1.1fr);
  gap: 2.3rem;
  align-items: center;
}

.hero-card {
  position: relative;
  padding: 1.4rem;
  border-radius: var(--radius-xl);
  background: radial-gradient(circle at top left, #111827, #020617);
  border: 1px solid rgba(148, 163, 184, 0.4);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  isolation: isolate;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.18rem 0.5rem 0.18rem 0.18rem;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.92);
  border: 1px solid rgba(148, 163, 184, 0.5);
  font-size: 0.72rem;
  color: var(--muted);
  margin-bottom: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.hero-pill-dot {
  width: 18px;
  height: 18px;
  border-radius: 999px;
  background: conic-gradient(from 210deg, #22c55e, #3b82f6, #a855f7);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #0b1120;
  font-size: 0.68rem;
  font-weight: 700;
}

.hero-heading {
  font-size: clamp(2.4rem, 4vw, 3.1rem);
  line-height: 1.1;
  margin-bottom: 0.7rem;
}

.hero-heading span {
  background: linear-gradient(120deg, #22c55e, #38bdf8, #a855f7);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  font-size: 0.98rem;
  color: var(--muted);
  line-height: 1.7;
  max-width: 560px;
  margin-bottom: 1.3rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  align-items: center;
  margin-bottom: 1.3rem;
}

.btn-primary {
  border-radius: 999px;
  padding: 0.72rem 1.6rem;
  border: none;
  background: linear-gradient(120deg, #3b82f6, #22c55e);
  color: #e5e7eb;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow: 0 18px 46px rgba(37, 99, 235, 0.7);
  transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-primary:hover {
  transform: translateY(-1px) scale(1.02);
  box-shadow: 0 24px 55px rgba(34, 197, 94, 0.5);
  filter: brightness(1.05);
}

.btn-ghost {
  border-radius: 999px;
  padding: 0.72rem 1.2rem;
  border: 1px solid rgba(148, 163, 184, 0.6);
  background: rgba(15, 23, 42, 0.8);
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: background var(--transition), transform var(--transition), color var(--transition),
    box-shadow var(--transition);
  text-decoration: none;
}

.btn-ghost:hover {
  background: rgba(15, 23, 42, 0.95);
  color: #e5e7eb;
  transform: translateY(-1px);
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.9);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
  font-size: 0.84rem;
  color: var(--muted);
}

.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.hero-dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: #22c55e;
  box-shadow: 0 0 10px rgba(34, 197, 94, 0.8);
}

.hero-panel {
  height: 100%;
  min-height: 260px;
  border-radius: var(--radius-xl);
  background: radial-gradient(circle at 0 0, #22c55e11, transparent 50%),
    radial-gradient(circle at 100% 0, #3b82f633, transparent 55%),
    radial-gradient(circle at 50% 100%, #a855f722, transparent 55%), #020617;
  border: 1px solid rgba(148, 163, 184, 0.4);
  box-shadow: var(--shadow-lg);
  padding: 1.2rem 1.3rem;
  overflow: hidden;
  position: relative;
  isolation: isolate;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.1rem;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.75rem;
}

.hero-badge {
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.65);
  background: rgba(15, 23, 42, 0.8);
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.hero-stat-box {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.hero-stat {
  flex: 1 1 120px;
  padding: 0.7rem 0.9rem;
  border-radius: 14px;
  background: rgba(2, 6, 23, 0.94);
  border: 1px solid rgba(148, 163, 184, 0.4);
}

.hero-stat-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--muted);
  margin-bottom: 0.25rem;
}

.hero-stat-value {
  font-size: 1.1rem;
  font-weight: 600;
}

/* ====== GRID CARDS (PROJECTS) ====== */

.grid-3 {
  margin-top: 1.8rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.3rem;
}

.hover-card {
  position: relative;
  padding: 1rem 1.1rem;
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, #020617, #020617f7);
  border: 1px solid rgba(148, 163, 184, 0.55);
  box-shadow: 0 16px 45px rgba(15, 23, 42, 0.85);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition),
    background var(--transition);
}

.hover-card::before {
  content: "";
  position: absolute;
  inset: -30%;
  background: radial-gradient(circle at top, rgba(56, 189, 248, 0.25), transparent 55%);
  opacity: 0;
  transition: opacity var(--transition), transform var(--transition);
  pointer-events: none;
}

.hover-card:hover {
  transform: translateY(-8px) translateZ(0);
  box-shadow: 0 26px 70px rgba(15, 23, 42, 0.95);
  border-color: rgba(59, 130, 246, 0.9);
  background: radial-gradient(circle at top, #020617, #020617f0);
}

.hover-card:hover::before {
  opacity: 1;
  transform: translateY(-8px);
}

.item-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--accent);
  margin-bottom: 0.4rem;
}

.item-title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.item-desc {
  font-size: 0.86rem;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 0.7rem;
}

.item-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.72rem;
  color: var(--muted);
  gap: 0.8rem;
}

.item-icon {
  width: 46px;
  height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  background: rgba(15, 23, 42, 0.9);
  margin-bottom: 0.7rem;
  box-shadow: 0 14px 40px rgba(15, 23, 42, 0.75);
}

.item-icon img {
  width: 28px;
  height: 28px;
  display: block;
}

.pill-small {
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.7);
  padding: 0.18rem 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  white-space: nowrap;
}

/* ====== CONTACT FORM ====== */

.contact-grid {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1.15fr);
  gap: 1.7rem;
  align-items: start;
}

.form-row {
  display: flex;
  gap: 0.9rem;
  margin-bottom: 0.9rem;
}

.form-field {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.28rem;
}

label {
  font-size: 0.8rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

input,
textarea {
  background: rgba(15, 23, 42, 0.9);
  border-radius: 12px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  padding: 0.6rem 0.7rem;
  color: var(--text);
  font-size: 0.9rem;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition),
    background var(--transition), transform var(--transition);
}

input:focus,
textarea:focus {
  border-color: rgba(59, 130, 246, 0.95);
  box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.6);
  background: rgba(15, 23, 42, 0.97);
  transform: translateY(-1px);
}

textarea {
  min-height: 120px;
  resize: vertical;
}

.aside {
  padding: 1.4rem 1.5rem 1.3rem;
  border-radius: var(--radius-xl);
  background: radial-gradient(circle at top, #1e293b, #020617);
  border: 1px solid rgba(148, 163, 184, 0.45);
  box-shadow: var(--shadow-lg);
  font-size: 0.86rem;
  color: var(--muted);
  line-height: 1.7;
}

.aside strong {
  color: #e5e7eb;
}

.list {
  margin-top: 0.9rem;
  list-style: none;
  padding-left: 0;
}

.list li {
  margin-bottom: 0.6rem;
}

.small-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--muted);
  opacity: 0.85;
}

.value {
  font-size: 0.9rem;
  color: #e5e7eb;
}

/* ====== FOOTER ====== */

footer {
  border-top: 1px solid rgba(148, 163, 184, 0.3);
  padding: 1.4rem 1.5rem 2rem;
  max-width: 1120px;
  margin: 0 auto;
  font-size: 0.8rem;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

footer span strong {
  color: #e5e7eb;
}

/* ====== RESPONSIVE ====== */

@media (max-width: 900px) {
  .hero-grid,
  .contact-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 780px) {
  nav {
    display: none;
  }
  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 600px) {
  main {
    padding-inline: 1.1rem;
  }
  .hero-card,
  .hero-panel,
  .card,
  .aside {
    border-radius: 18px;
  }
  .grid-3 {
    grid-template-columns: minmax(0, 1fr);
  }
  .form-row {
    flex-direction: column;
  }
}