/* ====== RESET ====== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #020617; /* dark */
  color: #e5e7eb;
  line-height: 1.6;
  padding-top: 1.5rem;
}

/* ====== GLOBAL ====== */
a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  max-width: 1024px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  border-bottom: 1px solid #1f2937;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(12px);

  
  transform: translateY(calc(-100% + 10px));
  transition: transform 0.2s ease;
}


.site-header:hover,
.site-header:focus-within {
  transform: translateY(0);
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 0;
}

.logo a {
  font-weight: 700;
  letter-spacing: 0.12em;
  font-size: 0.95rem;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav-links a {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #9ca3af;
  position: relative;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.35rem;
  width: 0;
  height: 2px;
  background: #38bdf8;
  transition: width 0.2s ease;
}

.nav-links a:hover {
  color: #e5e7eb;
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-links a.active {
  color: #e5e7eb;
}

.nav-links a.active::after {
  width: 100%;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  width: 32px;
  height: 32px;
  border-radius: 999px;
  border: 1px solid #1f2937;
  background: transparent;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  display: block;
  width: 16px;
  height: 2px;
  background: #e5e7eb;
  border-radius: 999px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle span::before {
  transform: translateY(-5px);
}

.nav-toggle span::after {
  transform: translateY(5px);
}

/* Toggle open state */
.nav-links.open {
  display: flex;
}

.nav-toggle.open span {
  transform: rotate(45deg);
}

.nav-toggle.open span::before {
  transform: rotate(-90deg) translateX(-5px);
}

.nav-toggle.open span::after {
  opacity: 0;
}

/* ====== MAIN LAYOUT ====== */
main {
  padding: 2.5rem 0 3.5rem;
}

.page-header {
  margin-bottom: 2.5rem;
}

.page-kicker {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: #6b7280;
  margin-bottom: 0.75rem;
}

.page-title {
  font-size: clamp(2rem, 3vw, 2.6rem);
  margin-bottom: 0.75rem;
}

.page-subtitle {
  max-width: 640px;
  color: #9ca3af;
}

/* ====== HERO (HOME) ====== */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
  gap: 2.75rem;
  align-items: center;
}

.hero-title span {
  color: #38bdf8;
}

.hero-subtitle {
  color: #9ca3af;
  margin: 1rem 0 1.25rem;
  max-width: 520px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.tag-pill {
  font-size: 0.75rem;
  border-radius: 999px;
  border: 1px solid #1f2937;
  padding: 0.3rem 0.8rem;
  color: #cbd5f5;
  background: #020617;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.4rem;
  border-radius: 999px;
  border: 1px solid #374151;
  font-size: 0.9rem;
  font-weight: 500;
  background: transparent;
  color: #e5e7eb;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease,
    background 0.15s ease;
}

.btn-primary {
  background: #38bdf8;
  border-color: #38bdf8;
  color: #020617;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.7);
  border-color: #38bdf8;
}

/* Hero avatar */
.hero-avatar {
  width: 220px;
  height: 220px;
  border-radius: 999px;
  border: 3px solid #38bdf8;
  margin-left: auto;
  position: relative;
  overflow: hidden;
  background: radial-gradient(circle at 30% 30%, #38bdf8, #020617 55%, #020617);
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-avatar span {
  font-size: 0.85rem;
  color: #e5e7eb;
  opacity: 0.9;
}

/* ====== SECTIONS ====== */
.section {
  margin-top: 3.5rem;
}

.section-header {
  margin-bottom: 1.5rem;
}

.section-title {
  font-size: 1.4rem;
  margin-bottom: 0.35rem;
}

.section-subtitle {
  color: #9ca3af;
  max-width: 640px;
}

/* Cards & grids */
.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.card {
  background: #020617;
  border-radius: 1rem;
  padding: 1.25rem 1.25rem 1.1rem;
  border: 1px solid #1f2937;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.8);
  border-color: #38bdf8;
}

.card-title {
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.card-meta {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #6b7280;
  margin-bottom: 0.5rem;
}

.card-body {
  color: #9ca3af;
  font-size: 0.93rem;
}

/* Skills */
.skills-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

/* Achievements (timeline style) */
.timeline {
  position: relative;
  padding-left: 1.5rem;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 0.45rem;
  top: 0.2rem;
  bottom: 0.2rem;
  width: 2px;
  background: linear-gradient(to bottom, #38bdf8, #1f2937);
  opacity: 0.7;
}

.timeline-item {
  position: relative;
  padding-left: 1.2rem;
  margin-bottom: 1.5rem;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -0.05rem;
  top: 0.3rem;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  border: 2px solid #38bdf8;
  background: #020617;
}

.timeline-title {
  font-weight: 600;
}

.timeline-meta {
  font-size: 0.8rem;
  color: #6b7280;
  margin: 0.2rem 0 0.4rem;
}

/* Contact */
.contact-details p {
  color: #9ca3af;
}

.contact-details a {
  color: #38bdf8;
}

.contact-form {
  margin-top: 1.5rem;
  max-width: 520px;
}

.field {
  margin-bottom: 1rem;
}

label {
  display: block;
  font-size: 0.85rem;
  margin-bottom: 0.35rem;
}

input,
textarea {
  width: 100%;
  padding: 0.65rem 0.8rem;
  border-radius: 0.6rem;
  border: 1px solid #1f2937;
  background: #020617;
  color: #e5e7eb;
  font: inherit;
}

input:focus,
textarea:focus {
  outline: none;
  border-color: #38bdf8;
  box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.5);
}

textarea {
  min-height: 140px;
  resize: vertical;
}

/* ====== FOOTER ====== */
.site-footer {
  border-top: 1px solid #1f2937;
  padding: 1.25rem 0 1.5rem;
  font-size: 0.8rem;
  color: #6b7280;
}

/* ====== RESPONSIVE ====== */
@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .hero-avatar {
    margin: 0 auto;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    padding: 0.75rem 1.25rem 1rem;
    flex-direction: column;
    background: rgba(15, 23, 42, 0.98);
    border-bottom: 1px solid #1f2937;
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }
}