:root {
  --bg-main: #09090b;
  --bg-panel: rgba(24, 24, 27, 0.65);
  --bg-panel-alt: rgba(39, 39, 42, 0.5);
  --accent: #3b82f6;
  --accent-gradient: linear-gradient(135deg, #3b82f6, #8b5cf6);
  --accent-soft: rgba(59, 130, 246, 0.15);
  --text: #f8fafc;
  --text-muted: #a1a1aa;
  --border: rgba(255, 255, 255, 0.08);
}

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

body {
  margin: 0;
  font-family: 'Outfit', 'Poppins', sans-serif;
  font-size: 16px;
  background: var(--bg-main) radial-gradient(circle at 50% -20%, rgba(59, 130, 246, 0.15) 0%, transparent 60%);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ================= GLASSMORPHISM UTILS ================= */
.glass-panel {
  background: var(--bg-panel);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
}

/* ================= HEADER ================= */
header {
  max-width: 1100px;
  margin: auto;
  padding: 4rem 2rem 2rem;
}

.header-container {
  padding: 3rem;
  display: flex;
  align-items: center;
  gap: 3rem;
  flex-wrap: wrap;
  position: relative;
  overflow: hidden;
}

.header-container::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 4px;
  background: var(--accent-gradient);
}

.profile-photo {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 4px solid rgba(255,255,255,0.1);
  padding: 6px;
  background: var(--accent-soft);
  box-shadow: 0 10px 40px rgba(0,0,0,0.5);
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  object-fit: cover;
}

.profile-photo:hover {
  transform: scale(1.05) rotate(2deg);
  box-shadow: 0 15px 50px rgba(59, 130, 246, 0.4);
}

.header-info h1 {
  margin: 0;
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.header-info p {
  color: var(--text-muted);
  margin-top: 1rem;
  font-size: 1.1rem;
  line-height: 1.8;
  max-width: 600px;
}

/* ================= NAV ================= */
.nav-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  padding-top: 2.5rem;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 1rem;
  padding: 0;
  margin: 0;
  background: rgba(255, 255, 255, 0.03);
  padding: 0.5rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--border);
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1.2rem;
  border-radius: 999px;
  transition: all 0.3s ease;
}

.nav-links a:hover {
  background: var(--accent-soft);
  color: var(--text);
}

/* ================= LANG ================= */
.lang-switch {
  display: flex;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.03);
  padding: 0.3rem;
  border-radius: 999px;
  border: 1px solid var(--border);
}

.lang-btn {
  border: none;
  background: transparent;
  color: var(--text-muted);
  padding: 0.4rem 1rem;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: inherit;
}

.lang-btn:hover {
  color: var(--text);
}

.lang-btn.active {
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

/* ================= SECTIONS ================= */
.section {
  padding: 4rem 3rem;
  max-width: 1000px;
  margin: 4rem auto;
  text-align: left;
}

.section-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 3rem;
}

.section-header h2 {
  margin: 0;
  font-size: 2rem;
  font-weight: 600;
}

.section-header .line {
  height: 1px;
  flex-grow: 1;
  background: linear-gradient(90deg, var(--border), transparent);
}

/* ================= SKILLS ================= */
.skills {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1.5rem;
}

.skill {
  background: var(--bg-panel-alt);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem 1rem;
  font-weight: 500;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: default;
}

.skill i {
  font-size: 2.5rem;
  transition: transform 0.3s ease;
}

.skill:hover {
  transform: translateY(-8px);
  box-shadow: 0 15px 30px rgba(0,0,0,0.4);
  border-color: rgba(59, 130, 246, 0.4);
  background: rgba(39, 39, 42, 0.8);
}

.skill:hover i {
  transform: scale(1.15);
}

/* ================= PROJECTS ================= */
.projects {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.project {
  background: var(--bg-panel-alt);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.project::before {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background: radial-gradient(circle at top right, rgba(59, 130, 246, 0.1), transparent 70%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.project:hover {
  transform: translateY(-6px);
  border-color: rgba(59, 130, 246, 0.3);
  box-shadow: 0 20px 40px rgba(0,0,0,0.5);
}

.project:hover::before {
  opacity: 1;
}

.project h3 {
  font-size: 1.3rem;
  margin: 0 0 1rem 0;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.project h3 i {
  color: var(--text-muted);
}

.project p {
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: 1.5rem;
}

.project-tags span {
  font-size: 0.85rem;
  padding: 0.3rem 0.8rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.project-links {
  display: flex;
  gap: 1rem;
}

.project-links a {
  color: var(--text);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: color 0.2s ease;
}

.project-links a:hover {
  color: var(--accent);
}

.loading-spinner {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
  font-size: 1.2rem;
  grid-column: 1 / -1;
}

.loading-spinner i {
  animation: spin 1s linear infinite;
  margin-right: 0.5rem;
}

@keyframes spin { 100% { transform: rotate(360deg); } }

/* ================= FOOTER ================= */
footer {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  border-top: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.2);
}

footer a {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

footer a:hover {
  color: var(--accent);
}

/* ================= MOBILE ================= */
@media (max-width: 768px) {
  .header-container {
    padding: 2rem;
    flex-direction: column;
    text-align: center;
    gap: 1.5rem;
  }

  .section {
    padding: 3rem 1.5rem;
    margin: 2rem 1rem;
  }

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

  .projects {
    grid-template-columns: 1fr;
  }
}