/* ===========================
   CSS Custom Properties
=========================== */
:root {
  --color-bg: #0f0f13;
  --color-bg-secondary: #16161f;
  --color-bg-card: #1c1c28;
  --color-accent: #6c63ff;
  --color-accent-light: #8b85ff;
  --color-accent-glow: rgba(108, 99, 255, 0.25);
  --color-text: #e8e8f0;
  --color-text-muted: #9090aa;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-hover: rgba(108, 99, 255, 0.5);
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --transition: 0.3s ease;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-accent: 0 4px 24px rgba(108, 99, 255, 0.2);
  --nav-height: 70px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  font-family: var(--font-family);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

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

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

.section {
  padding: 100px 0;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  text-align: center;
  margin-bottom: 60px;
  letter-spacing: -0.5px;
}

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

/* ===========================
   Buttons
=========================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
  white-space: nowrap;
}

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

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

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

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

.btn-full {
  width: 100%;
  justify-content: center;
}

/* ===========================
   Navbar
=========================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: background var(--transition), box-shadow var(--transition);
}

.navbar.scrolled {
  background: rgba(15, 15, 19, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--color-border);
}

.nav-container {
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-accent);
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-text);
  background: var(--color-border);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
}

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

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===========================
   Hero
=========================== */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 60px;
  max-width: 1100px;
  margin: 0 auto;
  padding: 120px 24px 80px;
  position: relative;
}

.hero-greeting {
  font-size: 1rem;
  color: var(--color-accent);
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.hero-name {
  font-size: clamp(3rem, 7vw, 5rem);
  font-weight: 800;
  letter-spacing: -2px;
  line-height: 1.05;
  margin-bottom: 12px;
}

.hero-title {
  font-size: clamp(1.2rem, 3vw, 1.8rem);
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: 20px;
  min-height: 2em;
}

.typed-text {
  color: var(--color-accent);
}

.cursor {
  animation: blink 1s step-end infinite;
  color: var(--color-accent);
}

@keyframes blink {
  50% { opacity: 0; }
}

.hero-description {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  max-width: 460px;
  margin-bottom: 32px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.hero-socials {
  display: flex;
  gap: 16px;
}

.hero-socials a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  transition: all var(--transition);
}

.hero-socials a:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  transform: translateY(-3px);
}

/* Avatar */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.avatar-wrapper {
  position: relative;
  width: 280px;
  height: 280px;
}

.avatar-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid var(--color-accent);
  opacity: 0.4;
  animation: pulse-ring 3s ease-in-out infinite;
}

@keyframes pulse-ring {
  0%, 100% { transform: scale(1); opacity: 0.4; }
  50% { transform: scale(1.05); opacity: 0.15; }
}

.avatar-circle {
  position: absolute;
  inset: 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent) 0%, #a78bfa 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.9);
  box-shadow: 0 0 60px var(--color-accent-glow);
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.scroll-dot {
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  animation: scroll-bounce 2s ease-in-out infinite;
}

@keyframes scroll-bounce {
  0%, 100% { transform: translateY(0); opacity: 1; }
  50% { transform: translateY(10px); opacity: 0.3; }
}

/* ===========================
   About
=========================== */
.about {
  background: var(--color-bg-secondary);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.about-text p {
  color: var(--color-text-muted);
  margin-bottom: 20px;
  font-size: 1rem;
}

.about-text strong {
  color: var(--color-text);
}

.about-highlights {
  display: flex;
  gap: 32px;
  margin: 32px 0;
}

.highlight {
  text-align: center;
}

.highlight-number {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-accent);
}

.highlight-label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.about-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.info-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  transition: all var(--transition);
}

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

.info-card-icon {
  font-size: 1.5rem;
  margin-bottom: 12px;
}

.info-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.info-card p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ===========================
   Skills
=========================== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.skill-category {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--transition);
}

.skill-category:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.skill-category h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--color-accent);
}

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

.tag {
  padding: 5px 12px;
  background: rgba(108, 99, 255, 0.1);
  border: 1px solid rgba(108, 99, 255, 0.25);
  border-radius: 20px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  transition: all var(--transition);
}

.tag:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}

/* ===========================
   Projects
=========================== */
.projects {
  background: var(--color-bg-secondary);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.project-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.project-card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-6px);
  box-shadow: var(--shadow-accent);
}

.project-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.project-icon {
  font-size: 2rem;
}

.project-links {
  display: flex;
  gap: 12px;
}

.project-links a {
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  transition: color var(--transition);
}

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

.project-title {
  font-size: 1.1rem;
  font-weight: 700;
}

.project-description {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  flex: 1;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.tech-tag {
  padding: 3px 10px;
  background: rgba(108, 99, 255, 0.1);
  border: 1px solid rgba(108, 99, 255, 0.2);
  border-radius: 20px;
  font-size: 0.75rem;
  color: var(--color-accent-light);
}

/* ===========================
   Contact
=========================== */
.contact-intro {
  text-align: center;
  color: var(--color-text-muted);
  max-width: 560px;
  margin: -30px auto 50px;
  font-size: 1rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 60px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-item-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  flex-shrink: 0;
}

.contact-item h4 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.contact-item a {
  color: var(--color-text);
  font-size: 0.95rem;
  transition: color var(--transition);
}

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

/* Contact Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.form-group input,
.form-group textarea {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--color-text);
  font-family: var(--font-family);
  font-size: 0.95rem;
  transition: border-color var(--transition);
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-muted);
  opacity: 0.6;
}

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

.form-status {
  font-size: 0.875rem;
  text-align: center;
  min-height: 1.2em;
}

.form-status.success {
  color: #4ade80;
}

.form-status.error {
  color: #f87171;
}

/* ===========================
   Footer
=========================== */
.footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: 32px 24px;
  text-align: center;
}

.footer p {
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.footer strong {
  color: var(--color-accent);
}

.footer-sub {
  margin-top: 6px;
  font-size: 0.8rem !important;
  opacity: 0.6;
}

/* ===========================
   Animations (fade-in on scroll)
=========================== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===========================
   Responsive
=========================== */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    justify-items: center;
    padding-top: 130px;
  }

  .hero-description {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-socials {
    justify-content: center;
  }

  .hero-visual {
    order: -1;
  }

  .avatar-wrapper {
    width: 200px;
    height: 200px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 640px) {
  .nav-links {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(15, 15, 19, 0.98);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 16px;
    border-bottom: 1px solid var(--color-border);
  }

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

  .nav-toggle {
    display: flex;
  }

  .nav-link {
    padding: 12px 16px;
    text-align: center;
  }

  .about-highlights {
    gap: 20px;
  }

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

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

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

  .section {
    padding: 70px 0;
  }
}