/* ==========================================================================
   Base Styles & Reset
   ========================================================================== */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Outfit:wght@400;600;700;800&display=swap');
@import url('./variables.css');

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography Base */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-text-main);
  line-height: 1.2;
  margin-bottom: var(--spacing-4);
  font-weight: 700;
}

p {
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-4);
}

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

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

ul, ol {
  list-style: none;
}

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

/* ==========================================================================
   Layout Utilities
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-6);
}

section {
  padding: var(--spacing-24) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-16);
}

.section-title {
  font-size: var(--text-4xl);
  margin-bottom: var(--spacing-2);
}

.section-subtitle {
  font-family: var(--font-body);
  color: var(--color-accent);
  font-size: var(--text-lg);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ==========================================================================
   Components
   ========================================================================== */

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--spacing-3) var(--spacing-8);
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-weight: 500;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 2px solid transparent;
}

.btn-primary {
  background-color: var(--color-accent);
  color: #FFFFFF;
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.btn-outline:hover {
  background-color: var(--color-accent);
  color: #FFFFFF;
  transform: translateY(-2px);
}

/* Cards */
.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-8);
  transition: box-shadow var(--transition-normal), transform var(--transition-normal);
}

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

/* ==========================================================================
   Navigation
   ========================================================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(250, 250, 250, 0.9);
  backdrop-filter: blur(10px);
  z-index: 1000;
  padding: var(--spacing-4) 0;
  transition: box-shadow var(--transition-normal);
}

.navbar.scrolled {
  box-shadow: var(--shadow-sm);
}

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

.logo {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-text-main);
  letter-spacing: -0.02em;
}

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

.nav-links {
  display: flex;
  gap: var(--spacing-8);
  align-items: center;
}

.nav-link {
  color: var(--color-text-main);
  font-weight: 500;
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -4px;
  left: 0;
  background-color: var(--color-accent);
  transition: width var(--transition-normal);
}

.nav-link:hover::after {
  width: 100%;
}

.hamburger {
  display: none;
  cursor: pointer;
  background: none;
  border: none;
}

.hamburger-line {
  display: block;
  width: 25px;
  height: 2px;
  margin: 5px auto;
  background-color: var(--color-text-main);
  transition: all var(--transition-fast);
}

/* ==========================================================================
   Sections Layout Base
   ========================================================================== */

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--spacing-20);
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-12);
  align-items: center;
}

.hero-content h1 {
  font-size: var(--text-5xl);
  margin-bottom: var(--spacing-2);
}

.hero-subtitle {
  font-size: var(--text-2xl);
  color: var(--color-text-muted);
  font-weight: 400;
  margin-bottom: var(--spacing-6);
}

.hero-tagline {
  font-size: var(--text-lg);
  margin-bottom: var(--spacing-8);
  max-width: 480px;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-4);
}

.hero-image-wrapper {
  position: relative;
  border-radius: var(--radius-full);
  padding: var(--spacing-2);
  background: linear-gradient(135deg, var(--color-accent-light) 0%, transparent 100%);
  max-width: 400px;
  margin: 0 auto;
}

.hero-image {
  border-radius: var(--radius-full);
  aspect-ratio: 1 / 1;
  object-fit: cover;
  background-color: #E5E7EB; /* Placeholder gray */
  width: 100%;
}

/* About Section */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-12);
  align-items: start;
}

.about-text p {
  font-size: var(--text-lg);
  margin-bottom: var(--spacing-6);
}

.quick-facts {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.fact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-4);
}

.fact-icon {
  color: var(--color-accent);
  font-size: var(--text-xl);
  margin-top: 2px;
}

/* Education Section */
.timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 20px;
  height: 100%;
  width: 2px;
  background-color: var(--color-accent-light);
}

.timeline-item {
  position: relative;
  padding-left: var(--spacing-12);
  margin-bottom: var(--spacing-8);
}

.timeline-dot {
  position: absolute;
  left: 14px;
  top: 0;
  width: 14px;
  height: 14px;
  border-radius: var(--radius-full);
  background-color: var(--color-accent);
  border: 4px solid var(--color-bg);
}

.timeline-content {
  padding-bottom: var(--spacing-4);
}

.timeline-date {
  color: var(--color-accent);
  font-weight: 600;
  font-size: var(--text-sm);
  margin-bottom: var(--spacing-1);
}

.timeline-title {
  font-size: var(--text-xl);
  margin-bottom: var(--spacing-1);
}

.timeline-subtitle {
  font-size: var(--text-base);
  color: var(--color-text-muted);
}

/* Skills Section */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-8);
}

.skill-category h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--spacing-6);
  border-bottom: 1px solid var(--color-accent-light);
  padding-bottom: var(--spacing-2);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-3);
}

.skill-tag {
  background-color: var(--color-surface);
  color: var(--color-text-main);
  padding: var(--spacing-2) var(--spacing-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  box-shadow: var(--shadow-sm);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
}

.skill-tag:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-2px);
}

/* Projects Section */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-8);
}

.project-card {
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow: hidden;
}

.project-image {
  width: 100%;
  height: 200px;
  background-color: #E5E7EB; /* Placeholder */
  object-fit: cover;
}

.project-content {
  padding: var(--spacing-6);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.project-title {
  font-size: var(--text-xl);
  margin-bottom: var(--spacing-2);
}

.project-desc {
  font-size: var(--text-sm);
  margin-bottom: var(--spacing-4);
  flex-grow: 1;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-6);
}

.tech-pill {
  font-size: var(--text-xs);
  background-color: var(--color-accent-light);
  color: var(--color-accent-hover);
  padding: var(--spacing-1) var(--spacing-2);
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.project-links {
  display: flex;
  gap: var(--spacing-4);
  margin-top: auto;
}

/* Contact Section */
.contact-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-12);
  max-width: 900px;
  margin: 0 auto;
}

.contact-info p {
  font-size: var(--text-lg);
  margin-bottom: var(--spacing-8);
}

.contact-email {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-4);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-text-main);
  margin-bottom: var(--spacing-8);
}

.contact-email:hover {
  color: var(--color-accent);
}

.social-links {
  display: flex;
  gap: var(--spacing-4);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background-color: var(--color-surface);
  color: var(--color-text-main);
  font-size: var(--text-xl);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.social-link:hover {
  background-color: var(--color-accent);
  color: #FFFFFF;
  transform: translateY(-4px);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.form-group label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
}

.form-group input,
.form-group textarea {
  padding: var(--spacing-3) var(--spacing-4);
  border: 1px solid #E5E7EB;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-base);
  transition: border-color var(--transition-fast);
  background-color: var(--color-surface);
}

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

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* Footer */
.footer {
  background-color: var(--color-surface);
  padding: var(--spacing-8) 0;
  text-align: center;
  border-top: 1px solid #E5E7EB;
}

.footer-text {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  margin: 0;
}

/* ==========================================================================
   Animations
   ========================================================================== */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in-up.appear {
  opacity: 1;
  transform: translateY(0);
}