/* ===== Reset & Base ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --navy: #2c3e50;
  --navy-light: #34495e;
  --coral: #e07a5f;
  --coral-dark: #c9684f;
  --cream: #faf8f5;
  --cream-dark: #f0ece6;
  --white: #ffffff;
  --gray: #7f8c8d;
  --gray-light: #bdc3c7;
  --text: #2c3e50;
  --text-light: #5a6c7d;
  --radius: 12px;
  --shadow: 0 2px 12px rgba(44, 62, 80, 0.08);
  --shadow-hover: 0 4px 20px rgba(44, 62, 80, 0.14);
  --transition: 0.3s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  color: var(--text);
  background: var(--cream);
  line-height: 1.7;
  font-size: 16px;
}

h1, h2, h3, h4 {
  font-family: 'Nunito', sans-serif;
  font-weight: 700;
  line-height: 1.3;
}

h1 { font-size: 2.8rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.3rem; }

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

a:hover {
  color: var(--coral-dark);
}

img {
  max-width: 100%;
  display: block;
}

/* ===== Layout ===== */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 80px 0;
}

/* ===== Navigation ===== */
.navbar {
  position: sticky;
  top: 0;
  background: var(--white);
  box-shadow: var(--shadow);
  z-index: 1000;
  padding: 0 24px;
}

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

.navbar-brand {
  font-family: 'Nunito', sans-serif;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--navy);
}

.navbar-brand:hover {
  color: var(--coral);
}

.navbar-links {
  display: flex;
  list-style: none;
  gap: 8px;
}

.navbar-links a {
  color: var(--navy-light);
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 8px;
  transition: all var(--transition);
}

.navbar-links a:hover,
.navbar-links a.active {
  color: var(--coral);
  background: rgba(224, 122, 95, 0.08);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--navy);
  margin: 6px 0;
  border-radius: 2px;
  transition: all var(--transition);
}

/* ===== Hero ===== */
.hero {
  padding: 100px 0 80px;
  text-align: center;
}

.hero h1 {
  margin-bottom: 16px;
  color: var(--navy);
}

.hero .subtitle {
  font-size: 1.25rem;
  color: var(--coral);
  font-weight: 600;
  margin-bottom: 20px;
}

.hero .tagline {
  font-size: 1.1rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto 32px;
}

.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  font-family: 'Inter', sans-serif;
}

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

.btn-primary:hover {
  background: var(--coral-dark);
  color: var(--white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-hover);
}

.btn-outline {
  background: transparent;
  color: var(--coral);
  border: 2px solid var(--coral);
}

.btn-outline:hover {
  background: var(--coral);
  color: var(--white);
  transform: translateY(-1px);
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== Section Headers ===== */
.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header h2 {
  color: var(--navy);
  margin-bottom: 12px;
}

.section-header p {
  color: var(--text-light);
  max-width: 550px;
  margin: 0 auto;
}

/* ===== Cards ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  transition: all var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.card h3 {
  margin-bottom: 12px;
  color: var(--navy);
}

.card p {
  color: var(--text-light);
  margin-bottom: 16px;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--cream);
  color: var(--text-light);
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
}

.card-link {
  display: inline-block;
  margin-top: 12px;
  font-weight: 600;
  font-size: 0.9rem;
}

/* ===== About Page ===== */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-intro .bio h2 {
  color: var(--navy);
  margin-bottom: 16px;
}

.about-intro .bio p {
  color: var(--text-light);
  margin-bottom: 16px;
}

.about-photo-placeholder {
  background: var(--cream-dark);
  border-radius: var(--radius);
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray);
  font-size: 0.9rem;
}

.skills-section {
  background: var(--white);
  padding: 80px 0;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.skill-item {
  padding: 20px;
  background: var(--cream);
  border-radius: var(--radius);
  text-align: center;
  font-weight: 600;
  color: var(--navy);
  transition: all var(--transition);
}

.skill-item:hover {
  background: var(--coral);
  color: var(--white);
  transform: translateY(-2px);
}

.interests-section {
  padding: 80px 0;
}

.interests-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 24px;
}

.interest-item {
  background: var(--white);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  text-align: center;
}

.interest-item .icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.interest-item h3 {
  margin-bottom: 8px;
}

.interest-item p {
  color: var(--text-light);
  font-size: 0.95rem;
}

/* ===== Projects Page ===== */
.filter-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 40px;
}

.filter-btn {
  padding: 8px 20px;
  border: 2px solid var(--gray-light);
  border-radius: 24px;
  background: transparent;
  color: var(--text-light);
  font-weight: 500;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition);
  font-family: 'Inter', sans-serif;
}

.filter-btn:hover,
.filter-btn.active {
  border-color: var(--coral);
  color: var(--coral);
  background: rgba(224, 122, 95, 0.08);
}

/* ===== Contact Page ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-info h2 {
  color: var(--navy);
  margin-bottom: 16px;
}

.contact-info p {
  color: var(--text-light);
  margin-bottom: 32px;
}

.contact-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-links li a {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--navy);
  font-weight: 500;
  padding: 12px 16px;
  border-radius: var(--radius);
  transition: all var(--transition);
}

.contact-links li a:hover {
  background: var(--cream-dark);
  color: var(--coral);
}

.contact-form {
  background: var(--white);
  padding: 36px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--navy);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--cream-dark);
  border-radius: 8px;
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  color: var(--text);
  background: var(--cream);
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--coral);
}

.form-group textarea {
  resize: vertical;
  min-height: 140px;
}

/* ===== Footer ===== */
.footer {
  background: var(--navy);
  color: rgba(255, 255, 255, 0.7);
  text-align: center;
  padding: 32px 0;
  font-size: 0.9rem;
}

.footer a {
  color: rgba(255, 255, 255, 0.9);
}

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

/* ===== Responsive ===== */
@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }

  section { padding: 60px 0; }

  .hero { padding: 60px 0 40px; }

  .nav-toggle {
    display: block;
  }

  .navbar-links {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 16px 24px;
    box-shadow: var(--shadow);
  }

  .navbar-links.open {
    display: flex;
  }

  .about-intro {
    grid-template-columns: 1fr;
  }

  .about-photo-placeholder {
    max-width: 300px;
    margin: 0 auto;
  }

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

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