/* Modern Minimal Portfolio */

:root {
  --color-primary: #000;
  --color-text: #1a1a1a;
  --color-text-light: #666;
  --color-bg: #fff;
  --color-bg-light: #f8f8f8;
  --color-border: #e5e5e5;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
}

/* Dark mode */
body.dark-mode {
  --color-primary: #fff;
  --color-text: #e5e5e5;
  --color-text-light: #999;
  --color-bg: #1a1a1a;
  --color-bg-light: #242424;
  --color-border: #333;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 0;
  transition: all 0.3s ease;
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.nav-links {
  display: flex;
  justify-content: center;
  gap: 3rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.nav-links a {
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.3s ease;
  position: relative;
}

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

.nav-links a::after {
  content: "";
  position: absolute;
  width: 0;
  height: 2px;
  bottom: 4px;
  left: 0;
  background: var(--color-primary);
  transition: width 0.3s ease;
}

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

/* Theme Toggle Button */
.theme-toggle {
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 1.2rem;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  margin-left: 1rem;
}

.theme-toggle:hover {
  background: rgba(0, 0, 0, 0.05);
  transform: rotate(20deg);
}

body.dark-mode .theme-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

body.dark-mode .navbar {
  background: rgba(26, 26, 26, 0.95);
  border-bottom-color: rgba(255, 255, 255, 0.1);
}

body.dark-mode .navbar.scrolled {
  background: rgba(26, 26, 26, 0.98);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}
/* Hero Section */
.hero {
  margin-top: 60px;
  height: calc(100vh - 60px);
  background:
    linear-gradient(rgba(245, 245, 245, 0.85), rgba(255, 255, 255, 0.85)),
    url("https://images.unsplash.com/photo-1517694712202-14dd9538aa97?w=1600&q=80");
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--spacing-xl);
  position: relative;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-lg);
  max-width: 800px;
  position: relative;
  z-index: 1;
}

body.dark-mode .hero {
  background:
    linear-gradient(rgba(26, 26, 26, 0.9), rgba(36, 36, 36, 0.9)),
    url("https://images.unsplash.com/photo-1517694712202-14dd9538aa97?w=1600&q=80");
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

body:not(.dark-mode) .hero {
  background:
    linear-gradient(rgba(245, 245, 245, 0.85), rgba(255, 255, 255, 0.85)),
    url("https://images.unsplash.com/photo-1517694712202-14dd9538aa97?w=1600&q=80") !important;
  background-size: cover !important;
  background-position: center !important;
  background-attachment: fixed !important;
}

.portrait {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 4px solid rgba(0, 0, 0, 0.1);
  object-fit: cover;
  animation: fadeInUp 0.8s ease both;
}

.hero-content h1 {
  font-size: 4rem;
  font-weight: 700;
  letter-spacing: -1px;
  line-height: 1.2;
  animation: fadeInUp 0.8s ease 0.2s both;
}

.subtitle-carousel {
  position: relative;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.subtitle {
  font-size: 1.4rem;
  color: var(--color-text-light);
  font-weight: 400;
  position: absolute;
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.6s ease-in-out;
  margin: 0;
  white-space: nowrap;
}

.subtitle.active {
  opacity: 1;
  transform: translateY(0);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Sections */
section {
  padding: var(--spacing-xl) 0;
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease;
}

section.visible {
  opacity: 1;
  transform: translateY(0);
}

section:nth-child(odd) {
  background: var(--color-bg);
}

section:nth-child(even) {
  background: var(--color-bg-light);
}

/* Section Title */
.section-title {
  font-size: 2.8rem;
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  text-align: center;
  letter-spacing: -0.5px;
}

/* About Section */
.about-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.about-content p {
  font-size: 1.1rem;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-md);
  line-height: 1.8;
}

.about-content p:last-child {
  margin-bottom: 0;
}

/* Skills Grid */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.skill-card {
  background: var(--color-bg);
  padding: var(--spacing-lg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  text-align: center;
  transition: all 0.3s ease;
}

.skill-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.skill-card i {
  font-size: 2.5rem;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  display: block;
  transition: transform 0.3s ease;
}

.skill-card:hover i {
  transform: scale(1.15);
}

.skill-card h3 {
  font-size: 1.3rem;
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
}

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

/* Projects Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.project-card {
  background: var(--color-bg);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.project-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
  transform: translateY(-6px);
}

.project-image {
  width: 100%;
  height: 200px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  transition: transform 0.3s ease;
}

.project-card:hover .project-image {
  transform: scale(1.02);
}

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

.project-content h3 {
  font-size: 1.4rem;
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
}

.project-content p {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-md);
  flex-grow: 1;
  line-height: 1.7;
}

.project-tags {
  display: flex;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
  flex-wrap: wrap;
}

.tag {
  display: inline-block;
  background: var(--color-bg-light);
  color: var(--color-text);
  padding: 0.35rem 0.75rem;
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 500;
  border: 1px solid var(--color-border);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.9rem 1.8rem;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  text-align: center;
  font-family: "Inter", sans-serif;
}

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

.btn-primary:hover {
  background: #333;
  border-color: #333;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

body.dark-mode .btn-primary {
  background: #000;
  color: white;
  border: 2px solid #000;
}

body.dark-mode .btn-primary:hover {
  background: #333;
  border-color: #333;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.5);
}

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

.btn-secondary:hover {
  background: var(--color-primary);
  color: white;
  transform: translateY(-2px);
}

body.dark-mode .btn-secondary {
  color: #fff;
  border: 2px solid #fff;
}

body.dark-mode .btn-secondary:hover {
  background: #fff;
  color: #000;
}

/* Contact Form */
.contact-form {
  max-width: 600px;
  margin: var(--spacing-lg) auto 0;
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
  font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-sm);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-family: "Inter", sans-serif;
  font-size: 1rem;
  transition: all 0.3s ease;
  background: white;
  color: var(--color-text);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-light);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.05);
}

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

/* Footer */
footer {
  background: var(--color-bg);
  color: var(--color-text);
  text-align: center;
  padding: var(--spacing-lg) var(--spacing-md);
  margin-top: 0;
}

footer p {
  margin-bottom: var(--spacing-md);
  opacity: 0.8;
}

body.dark-mode footer {
  background: var(--color-bg-light);
  color: var(--color-text);
}

body.dark-mode footer p {
  color: var(--color-text);
}

body.dark-mode .social-links a {
  background: rgba(255, 255, 255, 0.2);
  color: var(--color-text);
}

.social-links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.social-links a {
  color: var(--color-text);
  font-size: 1.3rem;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.1);
  text-decoration: none;
}

.social-links a:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-3px);
}

/* Responsive */
@media (max-width: 768px) {
  .hero-content h1 {
    font-size: 2.5rem;
  }

  .subtitle {
    font-size: 1.1rem;
  }

  .nav-links {
    gap: 1.5rem;
  }

  .section-title {
    font-size: 2rem;
  }

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

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

  .hero {
    padding: var(--spacing-md);
  }

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

@media (max-width: 480px) {
  .nav-links {
    gap: 1rem;
    font-size: 0.85rem;
  }

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

  .subtitle {
    font-size: 1rem;
  }

  .section-title {
    font-size: 1.6rem;
  }

  .btn {
    padding: 0.8rem 1.5rem;
    font-size: 0.95rem;
  }

  .social-links {
    gap: var(--spacing-sm);
  }
}