/* ===== Design Tokens ===== */
:root {
  --color-ink: #0b1220;
  --color-ink-soft: #172033;
  --color-accent: #14b8a6;
  --color-accent-dark: #0f9488;
  --color-accent-soft: #ccfbf1;
  --color-text: #1c2530;
  --color-text-muted: #5b6472;
  --color-bg: #ffffff;
  --color-bg-alt: #f5f7fa;
  --color-border: #e6e9ef;

  --font-heading: "Poppins", "Segoe UI", sans-serif;
  --font-body: "Inter", "Segoe UI", sans-serif;

  --max-width: 1140px;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 20px 40px -12px rgba(11, 18, 32, 0.15);
  --shadow-sm: 0 8px 20px -6px rgba(11, 18, 32, 0.1);
  --transition: 0.25s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3 { font-family: var(--font-heading); font-weight: 700; line-height: 1.2; color: var(--color-ink); }
.nowrap { white-space: nowrap; }

/* ===== Scroll reveal ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.in-view { opacity: 1; transform: translateY(0); }

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 13px 30px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--color-ink);
  color: #fff;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow); background: var(--color-ink-soft); }

.btn-secondary {
  border-color: var(--color-ink);
  color: var(--color-ink);
}
.btn-secondary:hover { background: var(--color-ink); color: #fff; transform: translateY(-2px); }

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.navbar {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--color-ink);
}
.logo span { color: var(--color-accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  transition: color var(--transition);
  position: relative;
}
.nav-links a:not(.btn-nav)::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition);
}
.nav-links a:not(.btn-nav):hover::after,
.nav-links a.active::after { width: 100%; }
.nav-links a:hover { color: var(--color-ink); }

.btn-nav {
  background: var(--color-ink);
  color: #fff !important;
  padding: 9px 22px;
  border-radius: 999px;
}
.btn-nav:hover { background: var(--color-ink-soft); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-ink);
  transition: transform var(--transition), opacity var(--transition);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 140px 0 120px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(600px 400px at 85% 10%, rgba(20, 184, 166, 0.16), transparent 70%),
    radial-gradient(500px 400px at 10% 90%, rgba(11, 18, 32, 0.06), transparent 70%),
    var(--color-bg-alt);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: center;
}

.eyebrow {
  display: inline-block;
  color: var(--color-accent-dark);
  background: var(--color-accent-soft);
  font-weight: 600;
  letter-spacing: 0.04em;
  font-size: 0.85rem;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 20px;
}

.eyebrow-sm {
  color: var(--color-accent-dark);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.8rem;
  margin-bottom: 10px;
}

.hero h1 {
  font-size: clamp(2.6rem, 5.5vw, 3.8rem);
  margin-bottom: 10px;
}

.hero-tagline {
  font-size: clamp(1.15rem, 2.2vw, 1.5rem);
  color: var(--color-text-muted);
  font-family: var(--font-body);
  font-weight: 600;
  margin-bottom: 20px;
}

.hero-summary {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  margin-bottom: 34px;
  max-width: 560px;
}

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* Hero visual */
.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 340px;
}

.hero-card {
  background: var(--color-ink);
  color: #fff;
  width: 260px;
  padding: 40px 28px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
  position: relative;
  z-index: 2;
}

.hero-monogram {
  width: 88px;
  height: 88px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
}

.hero-card-name { font-weight: 600; font-size: 1.1rem; }
.hero-card-role { color: rgba(255,255,255,0.6); font-size: 0.9rem; margin-top: 4px; }

.floating-chip {
  position: absolute;
  background: #fff;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-ink);
  z-index: 3;
}
.chip-1 { top: 6%; right: 0%; }
.chip-2 { bottom: 18%; left: -6%; }
.chip-3 { bottom: -2%; right: 8%; }

/* ===== Sections ===== */
.section { padding: 100px 0; }
.section-alt { background: var(--color-bg-alt); }

.section-title {
  font-size: clamp(1.7rem, 4vw, 2.3rem);
  margin-bottom: 48px;
}

/* ===== About ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-text { color: var(--color-text-muted); font-size: 1.05rem; }

.stats-row { display: flex; flex-direction: column; gap: 16px; }

.stat-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px 24px;
  display: flex;
  align-items: baseline;
  gap: 12px;
  box-shadow: var(--shadow-sm);
}
.stat-value { font-family: var(--font-heading); font-size: 1.6rem; font-weight: 700; color: var(--color-accent-dark); }
.stat-label { color: var(--color-text-muted); font-weight: 500; font-size: 0.95rem; }

/* ===== Info cards (Education / Experience) ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.info-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
  transition: box-shadow var(--transition), transform var(--transition);
}
.info-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }

.info-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.info-card-icon svg { width: 24px; height: 24px; }

.info-card-meta {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-accent-dark);
  letter-spacing: 0.03em;
  margin-bottom: 8px;
}

.info-card h3 { font-size: 1.15rem; margin-bottom: 6px; }
.info-card-org { color: var(--color-text-muted); font-weight: 600; margin-bottom: 10px; font-size: 0.95rem; }
.info-card-detail { color: var(--color-text-muted); font-size: 0.95rem; }

/* ===== Skills ===== */
.skills-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 40px;
}

.skills-group-title {
  font-size: 1rem;
  color: var(--color-ink);
  margin-bottom: 16px;
}

.skills-grid { display: flex; flex-wrap: wrap; gap: 10px; }

.skill-tag {
  background: #fff;
  border: 1px solid var(--color-border);
  color: var(--color-ink);
  font-weight: 500;
  padding: 9px 18px;
  border-radius: 999px;
  font-size: 0.88rem;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.skill-tag:hover { background: var(--color-ink); color: #fff; border-color: var(--color-ink); }

.languages-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}
.lang-label { font-weight: 700; color: var(--color-ink); margin-right: 4px; }
.lang-tag {
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
  font-weight: 600;
  padding: 7px 16px;
  border-radius: 999px;
  font-size: 0.85rem;
}

/* ===== Contact ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 56px;
}

.contact-info { display: flex; flex-direction: column; gap: 20px; }
.contact-line { display: flex; align-items: center; gap: 14px; color: var(--color-text-muted); font-weight: 500; }
.contact-line a:hover { color: var(--color-ink); }

.contact-icon {
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
  display: flex;
  align-items: center;
  justify-content: center;
}
.contact-icon svg { width: 20px; height: 20px; }

.contact-form { display: flex; flex-direction: column; gap: 6px; }
.contact-form label { font-weight: 600; font-size: 0.9rem; margin-top: 10px; color: var(--color-ink); }
.contact-form input,
.contact-form textarea {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  resize: vertical;
  background: var(--color-bg-alt);
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  background: #fff;
}
.contact-form button { margin-top: 16px; align-self: flex-start; cursor: pointer; }
.form-note { font-size: 0.85rem; color: var(--color-text-muted); margin-top: 10px; }

/* ===== Footer ===== */
.site-footer {
  background: var(--color-ink);
  color: rgba(255, 255, 255, 0.6);
  padding: 28px 0;
  text-align: center;
  font-size: 0.9rem;
}

/* ===== Responsive ===== */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { order: -1; min-height: 260px; }
  .about-grid { grid-template-columns: 1fr; }
  .stats-row { flex-direction: row; flex-wrap: wrap; }
  .stat-card { flex: 1 1 160px; }
  .card-grid { grid-template-columns: 1fr; }
  .skills-columns { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .nav-toggle { display: flex; }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    border-bottom: 1px solid var(--color-border);
    transition: max-height var(--transition);
  }
  .nav-links.open { max-height: 400px; }
  .nav-links li { width: 100%; }
  .nav-links a { display: block; padding: 16px 24px; width: 100%; }
  .nav-links a::after { display: none; }
  .btn-nav { border-radius: 0; text-align: center; }

  .hero { padding: 110px 0 80px; }
  .floating-chip { position: static; display: inline-block; margin: 6px; }
  .hero-visual { flex-direction: column; }
}