/* RESET & VARIABLE */
:root {
  --bg-main: #0f172a;
  --bg-alt: #1e293b;
  --card-bg: #334155;
  --primary: #38bdf8;
  --primary-hover: #0284c7;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --border-color: #475569;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Inter", sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 80px 0;
}

.bg-alt {
  background-color: var(--bg-alt);
}

.section-title {
  text-align: center;
  margin-bottom: 50px;
}

.section-title h2 {
  font-size: 2.2rem;
  color: var(--text-main);
  margin-bottom: 10px;
}

.section-title p {
  color: var(--text-muted);
}

/* NAVBAR */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
  text-decoration: none;
}

.logo span {
  color: var(--primary);
}

.nav-links {
  display: flex;
  list-style: none;
  align-items: center;
  gap: 25px;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  transition: 0.3s;
}

.nav-links a:hover {
  color: var(--primary);
}

.btn-primary-sm {
  background-color: var(--primary);
  color: #0f172a !important;
  padding: 8px 16px;
  border-radius: 6px;
  font-weight: 600;
}

.btn-primary-sm:hover {
  background-color: var(--primary-hover);
}

.menu-toggle {
  display: none;
  font-size: 1.5rem;
  cursor: pointer;
}

/* HERO */
.hero {
  padding: 160px 0 100px;
  text-align: center;
}

.hero-content {
  max-width: 800px;
}

.badge {
  background-color: rgba(56, 189, 248, 0.1);
  color: var(--primary);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  display: inline-block;
  margin-bottom: 20px;
  border: 1px solid rgba(56, 189, 248, 0.3);
}

.hero h1 {
  font-size: 3rem;
  line-height: 1.2;
  margin-bottom: 20px;
}

.hero p {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 35px;
}

.hero-btns {
  display: flex;
  justify-content: center;
  gap: 15px;
}

.btn {
  padding: 12px 28px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: 0.3s;
}

.btn-primary {
  background-color: var(--primary);
  color: #0f172a;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background-color: var(--bg-alt);
}

/* ABOUT SECTION & PROFILE CARD */
.about-wrapper {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.about-profile-card {
  background-color: var(--bg-alt);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 35px;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.profile-avatar {
  width: 80px;
  height: 80px;
  background-color: rgba(56, 189, 248, 0.15);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2rem;
  margin: 0 auto 15px;
  border: 2px solid var(--primary);
}

.about-profile-card h3 {
  font-size: 1.6rem;
  margin-bottom: 6px;
}

.education-badge {
  color: var(--primary);
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 15px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.profile-bio {
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.7;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
}

.about-card {
  background-color: var(--bg-alt);
  padding: 30px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  text-align: center;
}

.about-card i {
  font-size: 2.5rem;
  color: var(--primary);
  margin-bottom: 20px;
}

.about-card h3 {
  margin-bottom: 12px;
}

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

/* SKILLS */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 20px;
}

.skill-item {
  background-color: var(--bg-main);
  border: 1px solid var(--border-color);
  padding: 20px;
  border-radius: 10px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  transition: 0.3s;
}

.skill-item:hover {
  border-color: var(--primary);
  transform: translateY(-5px);
}

.skill-item i {
  font-size: 2rem;
  color: var(--primary);
}

/* PROJECTS */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
}

.project-card {
  background-color: var(--bg-alt);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
}

.project-img-placeholder {
  height: 180px;
  background-color: var(--card-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  color: var(--primary);
}

.project-info {
  padding: 25px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-tag {
  font-size: 0.75rem;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
  margin-bottom: 8px;
}

.project-info h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
}

.project-info p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 20px;
  flex-grow: 1;
}

.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.tech-stack span {
  background-color: var(--bg-main);
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.8rem;
  color: var(--text-muted);
  border: 1px solid var(--border-color);
}

.btn-demo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--primary);
  color: #0f172a;
  padding: 10px 18px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: 0.3s;
}

.btn-demo:hover {
  background-color: var(--primary-hover);
}

.btn-demo.disabled {
  background-color: var(--border-color);
  color: var(--text-muted);
  cursor: not-allowed;
}

/* SERVICES */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
}

.service-box {
  background-color: var(--bg-main);
  padding: 30px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.service-box .icon {
  font-size: 2rem;
  color: var(--primary);
  margin-bottom: 15px;
}

.service-box h3 {
  margin-bottom: 10px;
}

.service-box p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* CONTACT */
.contact-card {
  background-color: var(--bg-alt);
  border: 1px solid var(--border-color);
  padding: 40px;
  border-radius: 12px;
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.contact-card p {
  color: var(--text-muted);
  margin-bottom: 25px;
}

.contact-btns {
  display: flex;
  justify-content: center;
  gap: 15px;
  flex-wrap: wrap;
}

/* FOOTER */
footer {
  text-align: center;
  padding: 30px 0;
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* RESPONSIVE NAV FOR MOBILE */
@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 70px;
    left: 0;
    width: 100%;
    background-color: var(--bg-alt);
    flex-direction: column;
    padding: 20px 0;
    display: none;
    border-bottom: 1px solid var(--border-color);
  }

  .nav-links.active {
    display: flex;
  }

  .hero h1 {
    font-size: 2.2rem;
  }
}