/* ===== CSS Custom Properties ===== */
:root {
  /* Cool & Professional Color Palette */
  --primary-color: #2563eb;
  --primary-hover: #1d4ed8;
  --secondary-color: #14b8a6;
  --secondary-hover: #0d9488;
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --background-primary: #ffffff;
  --background-secondary: #f9fafb;
  --background-tertiary: #f3f4f6;
  --border-color: #e5e7eb;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --border-radius: 8px;
  --border-radius-lg: 12px;
  --transition: all 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', 'Roboto', 'Helvetica Neue', sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--background-secondary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

h1 {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.025em;
}

h2 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.025em;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

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

a:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

/* ===== Layout Container ===== */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ===== Header & Navigation ===== */
header {
  position: sticky;
  top: 0;
  background: var(--background-primary);
  border-bottom: 1px solid var(--border-color);
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1rem;
  padding-bottom: 1rem;
}

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

.logo:hover {
  text-decoration: none;
  color: var(--primary-color);
}

nav {
  display: flex;
  gap: 2rem;
  align-items: center;
}

nav a {
  color: var(--text-secondary);
  font-weight: 500;
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  transition: var(--transition);
}

nav a:hover {
  color: var(--primary-color);
  background: var(--background-secondary);
  text-decoration: none;
}

/* ===== Hero Section ===== */
.hero {
  background: var(--background-primary);
  padding: 6rem 0 4rem;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.hero .tagline {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero .cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: 2rem;
}

/* ===== Sections ===== */
section {
  padding: 4rem 0;
}

.section-header {
  margin-bottom: 3rem;
  text-align: center;
}

.section-header h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: -0.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  border-radius: 2px;
}

.section-header p {
  font-size: 1.125rem;
  max-width: 700px;
  margin: 0 auto;
}

/* ===== Cards ===== */
.card {
  background: var(--background-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  transition: var(--transition);
}

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

/* ===== Grid Layouts ===== */
.grid {
  display: grid;
  gap: 2rem;
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  font-size: 1rem;
  font-family: inherit;
}

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

.btn-primary:hover {
  background: var(--primary-hover);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: var(--background-primary);
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
  background: var(--primary-color);
  color: white;
  text-decoration: none;
  transform: translateY(-2px);
}

/* ===== Bio Sections ===== */
.bio-content {
  max-width: 800px;
  margin: 0 auto;
}

.bio-content p {
  font-size: 1.125rem;
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

/* ===== Gallery ===== */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--border-radius-lg);
  background: var(--background-primary);
  border: 1px solid var(--border-color);
  transition: var(--transition);
  aspect-ratio: 4/3;
}

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

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0.4), transparent);
  color: white;
  padding: 1.5rem;
  transform: translateY(100%);
  transition: var(--transition);
}

.gallery-item:hover .gallery-overlay {
  transform: translateY(0);
}

.gallery-overlay h4 {
  color: white;
  margin: 0 0 0.5rem 0;
}

.gallery-overlay p {
  color: rgba(255, 255, 255, 0.9);
  margin: 0;
  font-size: 0.95rem;
}

/* ===== Blog Preview ===== */
.blog-preview-grid {
  display: grid;
  gap: 2rem;
  margin-top: 2rem;
}

.blog-card {
  background: var(--background-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  transition: var(--transition);
}

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

.blog-card h3 {
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.blog-card h3 a {
  color: var(--text-primary);
  text-decoration: none;
}

.blog-card h3 a:hover {
  color: var(--primary-color);
  text-decoration: none;
}

.blog-meta {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.blog-excerpt {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.read-more {
  color: var(--primary-color);
  font-weight: 600;
  text-decoration: none;
}

.read-more:hover {
  color: var(--primary-hover);
}

/* ===== Contact Form ===== */
.contact-container {
  max-width: 700px;
  margin: 0 auto;
}

.contact-links {
  margin-bottom: 3rem;
  text-align: center;
}

.social-links {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  list-style: none;
  margin-top: 1.5rem;
}

.social-links a {
  color: var(--text-secondary);
  font-size: 1.125rem;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.social-links a:hover {
  color: var(--primary-color);
  border-color: var(--primary-color);
  text-decoration: none;
  transform: translateY(-2px);
}

form {
  background: var(--background-primary);
  padding: 2rem;
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--border-color);
}

form label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  font-weight: 500;
}

form input,
form textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  font-size: 1rem;
  font-family: inherit;
  transition: var(--transition);
  background: var(--background-primary);
  color: var(--text-primary);
}

form input:focus,
form textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

form textarea {
  resize: vertical;
  min-height: 150px;
}

/* ===== Footer ===== */
footer {
  background: var(--background-primary);
  border-top: 1px solid var(--border-color);
  padding: 3rem 0;
  margin-top: 4rem;
  text-align: center;
}

footer p {
  color: var(--text-secondary);
  margin: 0.5rem 0;
}

footer a {
  color: var(--text-secondary);
}

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

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  html {
    font-size: 14px;
  }

  .container {
    padding: 0 1rem;
  }

  header .container {
    flex-direction: column;
    gap: 1rem;
  }

  nav {
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
  }

  nav a {
    padding: 0.375rem 0.75rem;
    font-size: 0.9rem;
  }

  .hero {
    padding: 4rem 0 3rem;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero .tagline {
    font-size: 1.125rem;
  }

  .hero .cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  section {
    padding: 3rem 0;
  }

  .section-header h2 {
    font-size: 2rem;
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 480px) {
  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  .section-header h2 {
    font-size: 1.75rem;
  }

  .btn {
    width: 100%;
    text-align: center;
  }

  form {
    padding: 1.5rem;
  }
}