:root {
  --bg: #0f172a;
  --card: #1e293b;
  --text: #e2e8f0;
  --accent: #00e6f6;
  --sub: #94a3b8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Open Sans", sans-serif;
  scroll-behavior: smooth;
}

/* ===== HEADER ===== */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 6vw;
  background: rgba(15, 23, 42, 0.8);
  position: fixed;
  top: 0;
  width: 100%;
  backdrop-filter: blur(10px);
  z-index: 10;
  transition: all 0.3s ease;
}

header.shrink {
  padding: 10px 6vw;
  background: rgba(15, 23, 42, 0.95);
}

.logo {
  font-family: "Akira Expanded", sans-serif;
  font-size: 1.3rem;
  letter-spacing: 1.2px;
}
.logo span {
  color: var(--accent);
}

nav {
  display: flex;
  align-items: center;
  gap: 20px;
}

nav a {
  font-family: "Montserrat", sans-serif;
  font-weight: 600;
  text-decoration: none;
  color: var(--sub);
  transition: color 0.2s;
}
nav a:hover {
  color: var(--accent);
}

.lang-toggle {
  margin-left: 15px;
  font-family: "Montserrat", sans-serif;
  font-weight: 600;
  color: var(--accent);
  cursor: pointer;
  user-select: none;
  transition: opacity 0.2s;
}
.lang-toggle:hover {
  opacity: 0.8;
}

.menu-toggle {
  display: none;
  font-size: 1.6rem;
  cursor: pointer;
}

/* ===== HERO ===== */
#hero {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: radial-gradient(circle at top, #1e293b 0%, #0f172a 100%);
}

.hero-content h1 {
  font-family: "Righteous", sans-serif;
  font-size: 2.7rem;
}
.hero-content span {
  color: var(--accent);
}
.hero-content p {
  font-family: "Open Sans", sans-serif;
  color: var(--sub);
  margin-bottom: 20px;
}
.hero-content button {
  font-family: "Montserrat", sans-serif;
  background: var(--accent);
  border: none;
  color: #0f172a;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.2s;
}
.hero-content button:hover {
  background: #04f7ff;
}

/* ===== SECTION ===== */
section {
  padding: 80px 20px;
  max-width: 1100px;
  margin: auto;
}
h2 {
  font-family: "Righteous", sans-serif;
  text-align: center;
  margin-bottom: 40px;
  color: var(--accent);
}
p {
  font-family: "Open Sans", sans-serif;
  line-height: 1.7;
}

/* ===== SKILLS / PROJECTS ===== */
.skills-grid, .project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.skill-card, .project-card {
  background: var(--card);
  border-radius: 10px;
  padding: 20px;
  transition: transform 0.3s, box-shadow 0.3s;
}
.skill-card:hover, .project-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 230, 246, 0.1);
}

/* ===== CONTACT ===== */
.contact-btn {
  font-family: "Montserrat", sans-serif;
  display: inline-block;
  background: var(--accent);
  color: #0f172a;
  padding: 10px 25px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
}
.contact-btn:hover {
  background: #04f7ff;
}

/* ===== FOOTER ===== */
footer {
  text-align: center;
  padding: 20px;
  color: var(--sub);
  font-size: 0.9rem;
  border-top: 1px solid #1e293b;
}

/* ===== ANIMATIONS ===== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  nav {
    display: none;
    flex-direction: column;
    background: #1e293b;
    position: absolute;
    top: 70px;
    right: 20px;
    padding: 20px;
    border-radius: 8px;
  }
  nav.active {
    display: flex;
  }
  .menu-toggle {
    display: block;
  }
}