:root {
  --bg-main: #050607;
  --bg-panel: #0f1116;
  --bg-panel-alt: #14171f;
  --accent: #c42222;
  --accent-soft: rgba(196,34,34,0.35);
  --text: #f0f0f0;
  --text-muted: #9fa5b5;
  --border: rgba(255,255,255,0.08);
}

* {
  box-sizing: border-box;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Poppins', sans-serif;
  font-size: 15px;
  background: radial-gradient(circle at top, #14161c 0%, var(--bg-main) 55%);
  color: var(--text);
  min-height: 100vh;
}

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

header {
  max-width: 1100px;
  margin: auto;
  padding: 3rem 2rem 2rem;
}

.header-container {
  background: linear-gradient(135deg, rgba(5,6,7,0.95), rgba(10,12,18,0.9));
  border-radius: 30px;
  border: 1px solid var(--border);
  box-shadow: 0 20px 60px rgba(0,0,0,0.65);
  padding: 2.5rem;
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.profile-photo {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 4px solid rgba(255,255,255,0.2);
  padding: 6px;
  background: radial-gradient(circle, rgba(255,255,255,0.2) 0%, transparent 60%);
  box-shadow: 0 10px 35px rgba(0,0,0,0.7);
}

.header-info h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: 0.05em;
}

.header-info p {
  color: var(--text-muted);
  margin-top: 0.6rem;
  line-height: 1.8;
}

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

.nav-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  padding-top: 1.5rem;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  padding: 0;
  margin: 0;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  padding: 0.45rem 1.2rem;
  border-radius: 999px;
  transition: background 0.3s, color 0.3s;
}

.nav-links a:hover {
  background: rgba(196,34,34,0.12);
  color: var(--text);
}

/* ================= LANG ================= */

.lang-switch {
  display: flex;
  gap: 0.5rem;
}

.lang-btn {
  border: 1px solid rgba(255,255,255,0.25);
  background: transparent;
  color: var(--text);
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
}

.lang-btn:hover {
  background: rgba(255,255,255,0.08);
}

.lang-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: transparent;
}

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

.section {
  padding: 3rem 2rem;
  max-width: 1000px;
  margin: 3rem auto;
  text-align: center;
  background: var(--bg-panel);
  border-radius: 22px;
  border: 1px solid var(--border);
  box-shadow: 0 15px 45px rgba(0,0,0,0.4);
}

.section h2 {
  margin-bottom: 2rem;
  text-transform: uppercase;
  letter-spacing: 0.25rem;
  font-size: 1rem;
}

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

.section a:hover {
  text-decoration: underline;
}

/* ================= SKILLS ================= */

.skills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

.skill {
  background: var(--bg-panel-alt);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1rem 2.2rem;
  font-weight: 600;
  transition: transform 0.25s, box-shadow 0.25s;
}

.skill:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.4);
}

/* ================= PROJECTS ================= */

.projects {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.project {
  background: var(--bg-panel-alt);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 1.5rem;
  text-align: left;
  transition: transform 0.3s, box-shadow 0.3s, border 0.3s;
}

.project:hover {
  transform: translateY(-5px);
  border-color: var(--accent-soft);
  box-shadow: 0 12px 35px rgba(0,0,0,0.45);
}

.project h3 {
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.project p {
  color: var(--text-muted);
  line-height: 1.6;
}

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

footer {
  text-align: center;
  padding: 2rem 1rem 3rem;
  color: #6d7285;
  font-size: 0.85rem;
}

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

footer a:hover {
  text-decoration: underline;
}

/* ================= MOBILE ================= */

@media (max-width: 600px) {
  header {
    padding: 2rem 1rem;
  }

  .header-container {
    padding: 2rem 1.5rem;
  }

  .profile-photo {
    margin: auto;
  }

  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
  }

  .section {
    margin: 2rem 1rem;
    padding: 2.5rem 1.5rem;
  }
}