:root {
  --bg: #0b0f1a;
  --text: #e6e9ef;
  --muted: #9aa4b2;
  --accent: #4da3ff;
  --card: #121826;
  --border: #1f2a3a;
  --header-height-padding: 5rem;
}

body {
  font-family: "Inter", "Helvetica Neue", Arial, sans-serif;
  margin: 0;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

/* ========================
   HEADER
   ======================== */
header {
  position: relative;
  padding: var(--header-height-padding) 1rem;
  text-align: center;
  color: #fff;
  overflow: hidden;
  background: url("stars.jpg") center/cover no-repeat;
  background-attachment: fixed;
}

header::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0.5),
    rgba(0, 0, 0, 0.8)
  );
  z-index: 0;
}

header * {
  position: relative;
  z-index: 1;
}

header h1 {
  margin: 0 0 0.5rem 0;
  font-size: 2.6rem;
  font-weight: 700;
}

header p {
  margin: 0 0 1.2rem 0;
  font-size: 1.2rem;
  color: rgba(255,255,255,0.9);
}

.card-link i {
  font-size: 1.4rem;
  margin-bottom: 12px;
  color: var(--accent);
}

.featured-card {
  display: flex;
  gap: 20px;
  align-items: center;
  background: var(--card);
  padding: 20px;
  border-radius: 16px;
  border: 1px solid var(--border);
}

.featured-card img {
  width: 180px;
  height: auto;
  border-radius: 10px;
  object-fit: cover;
}

.featured-card h3 {
  margin-top: 0;
}

/* ========================
   ABOUT
   ======================== */
.about-section {
  max-width: 900px;
  margin: auto;
  padding: 60px 20px;
  color: #eaeaea;
  line-height: 1.7;
}

.about-section h2 {
  font-size: 14px;
  letter-spacing: 2px;
  color: #888;
  margin-top: 40px;
}

.about-section p {
  font-size: 18px;
  margin-top: 10px;
}

.about-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 80px 20px;
  color: #e6edf3;
}

.about-header {
  display: flex;
  justify-content: center;
  margin-bottom: 50px;
}

.about-header img {
  width: 280px;
  height: 280px;
  border-radius: 50%;
  border: 2px solid #2f81f7;
  object-fit: cover;
}

.about-content {
  display: flex;
  flex-direction: column;
  gap: 50px;
}

.about-block h2 {
  font-size: 13px;
  letter-spacing: 2px;
  color: #8b949e;
  margin-bottom: 12px;
}

.about-block p {
  font-size: 17px;
  line-height: 1.8;
  color: #c9d1d9;
  max-width: 700px;
}

/* ========================
   CV
   ======================== */
.cv-frame {
  width: 100%;
  height: 90vh;
  border: none;
  border-radius: 10px;
  margin-top: 20px;
}

.cv-container {
  width: 100%;
  max-width: 1200px;
  margin: auto;
  padding: 2rem 1rem;
}

.cv-frame {
  width: 100%;
  height: 95vh;
  border: none;
  border-radius: 10px;
}

/* ========================
   NAV
   ======================== */
nav {
  margin-top: 0.6rem;
}

nav a {
  color: #fff;
  margin: 0 1rem;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  opacity: 0.85;
  transition: 0.2s ease;
}

nav a:hover {
  opacity: 1;
  color: var(--accent);
}

/* ========================
   LAYOUT
   ======================== */
.container {
  max-width: 900px;
  margin: auto;
  padding: 2.5rem 1rem;
}

h2 {
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.6rem;
  margin-bottom: 1.5rem;
  color: #ffffff;
  font-size: 1.5rem;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* ========================
   PROFILE IMAGE
   ======================== */
.profile-photo {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  object-fit: cover;
  display: block;
  margin: 20px auto;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  border: 4px solid var(--border);
}

/* ========================
   PROJECT CARDS
   ======================== */
.project-card {
  background: var(--card);
  padding: 20px;
  margin: 20px 0;
  border-radius: 12px;
  border: 1px solid var(--border);
  transition: 0.25s ease;
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 15px 40px rgba(0,0,0,0.5);
}

.project-card h3 {
  margin: 0 0 6px 0;
  color: #ffffff;
}

.project-card p {
  margin: 4px 0;
  color: var(--muted);
}

/* ========================
   FOOTER
   ======================== */
footer {
  background: #05070d;
  color: #888;
  text-align: center;
  padding: 1rem;
  font-size: 0.9rem;
  margin-top: 2rem;
  border-top: 1px solid var(--border);
}

/* ========================
   RESPONSIVE
   ======================== */
@media (max-width: 800px) {
  header {
    padding: 3.5rem 1rem;
  }

  header h1 {
    font-size: 2rem;
  }

  nav a {
    margin: 0 0.5rem;
    font-size: 0.9rem;
  }

  .profile-photo {
    width: 150px;
    height: 150px;
  }
}

@media (max-width: 420px) {
  header {
    padding: 3rem 0.5rem;
  }

  header h1 {
    font-size: 1.6rem;
  }

  nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.4rem;
  }

  nav a {
    margin: 0.2rem;
    font-size: 0.85rem;
  }
}

/* ========================
   HERO BUTTONS
   ======================== */
.hero-buttons {
  margin-top: 1.8rem;
}

.btn {
  display: inline-block;
  margin: 10px;
  padding: 13px 26px;
  border-radius: 10px;
  background: linear-gradient(135deg, #4da3ff, #1f6fff);
  color: white;
  font-weight: 600;
  font-size: 0.95rem;
  transition: 0.25s ease;
  box-shadow: none;
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: none;
}

/* ========================
   INTRO
   ======================== */
.intro {
  text-align: center;
  max-width: 700px;
  margin: auto;
}

.intro p {
  color: var(--muted);
  font-size: 1.05rem;
}

/* ========================
   QUICK LINKS
   ======================== */
.quick-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 25px;
  margin-top: 2rem;
}

.card-link {
  background: rgba(18, 24, 38, 0.85);
  backdrop-filter: blur(8px);
  padding: 26px;
  border-radius: 16px;
  border: 1px solid var(--border);
  transition: 0.3s ease;
  position: relative;
}

.card-link:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: 0 25px 60px rgba(0,0,0,0.7);
}

.card-link h3 {
  font-size: 1.25rem;
  margin-bottom: 10px;
}

.card-link p {
  color: var(--muted);
  font-size: 0.95rem;
}

.card-link::before {
  pointer-events: none;
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 16px;
  background: radial-gradient(circle at top, rgba(77,163,255,0.15), transparent);
  opacity: 0;
  transition: 0.3s;
}

.card-link:hover::before {
  opacity: 1;
}

/* ========================
   ANIMATIONS
   ======================== */
body {
  animation: fadeInPage 0.8s ease;
}

@keyframes fadeInPage {
  from { opacity: 0; }
  to { opacity: 1; }
}

.fade-up {
  opacity: 0;
  transform: translateY(25px);
  filter: blur(6px);
  animation: fadeUp 0.8s ease forwards;
}

@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}

.fade-up {
  will-change: transform, opacity, filter;
}

.project-image {
  width: 100%;
  max-width: 950px;
  max-height: 520px;

  object-fit: cover;

  border-radius: 20px;

  display: block;
  margin: 2rem auto;

  box-shadow: 0 10px 30px rgba(0,0,0,0.35);
}