/* ===================================
   VARIABLES & THEME
   =================================== */
:root {
  --bg-primary: #0f0f1a;
  --bg-secondary: #1a1a2e;
  --bg-card: #16162a;
  --text-primary: #f5f5f7;
  --text-secondary: #a1a1aa;
  --accent: #ff6b35;
  --accent-hover: #ff8555;
  --accent-glow: rgba(255, 107, 53, 0.3);
  --gradient: linear-gradient(135deg, #ff6b35, #f7931e);
  --border-color: rgba(255, 255, 255, 0.1);
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'Source Code Pro', monospace;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg-primary: #fafafa;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --text-primary: #1a1a2e;
    --text-secondary: #64748b;
    --border-color: rgba(0, 0, 0, 0.1);
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
  }
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-primary);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

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

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

/* ===================================
   UTILITIES
   =================================== */
.point {
  color: var(--accent);
  font-weight: 700;
}

.section {
  padding: 100px 0;
}

.section__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.section__title-icon {
  color: var(--accent);
  font-size: 0.8em;
}

.section__subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 60px;
}

/* ===================================
   BUTTONS
   =================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.btn--primary {
  background: var(--gradient);
  color: white;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--accent-glow);
}

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

.btn--secondary:hover {
  background: var(--accent);
  color: white;
}

.btn--full {
  width: 100%;
}

/* ===================================
   NAVBAR
   =================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(15, 15, 26, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

@media (prefers-color-scheme: light) {
  .navbar {
    background: rgba(255, 255, 255, 0.9);
  }
}

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

.nav__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo h2 {
  font-size: 1.5rem;
  font-weight: 700;
  font-family: var(--font-mono);
}

.nav__links {
  display: flex;
  gap: 32px;
}

.nav__links a {
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 8px 0;
}

.nav__links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient);
  transition: var(--transition);
}

.nav__links a:hover {
  color: var(--text-primary);
}

.nav__links a:hover::after {
  width: 100%;
}

/* Hamburger Menu */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.hamburger__line {
  width: 28px;
  height: 3px;
  background: var(--text-primary);
  border-radius: 3px;
  transition: var(--transition);
}

.hamburger.active .hamburger__line:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.active .hamburger__line:nth-child(2) {
  opacity: 0;
}

.hamburger.active .hamburger__line:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* ===================================
   HERO SECTION
   =================================== */
header {
  min-height: 100vh;
  background: var(--bg-primary);
}

.hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 120px 24px 60px;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 60px;
}

.hero__content {
  flex: 1;
  max-width: 600px;
}

.hero__greeting {
  font-size: 1.2rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 12px;
}

.hero__title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 16px;
}

.hero__subtitle {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: 24px;
  font-family: var(--font-mono);
}

.hero__description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 36px;
}

.hero__buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero__image {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero__image-wrapper {
  position: relative;
  width: 350px;
}

.hero__image-wrapper::before {
  content: '';
  position: absolute;
  top: -10px;
  left: -10px;
  right: 10px;
  bottom: 10px;
  border: 3px solid var(--accent);
  border-radius: 20px;
  z-index: 0;
}

.hero__image-wrapper img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 20px;
  position: relative;
  z-index: 1;
  box-shadow: var(--shadow);
}

/* ===================================
   SKILLS SECTION
   =================================== */
.skills {
  background: var(--bg-secondary);
}

.skills__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 32px 20px;
  text-align: center;
  transition: var(--transition);
  cursor: default;
}

.skill-card:hover {
  transform: translateY(-8px);
  border-color: var(--accent);
  box-shadow: 0 20px 40px var(--accent-glow);
}

.skill-card img {
  width: 60px;
  height: 60px;
  object-fit: contain;
  margin: 0 auto 16px;
  transition: var(--transition);
}

.skill-card:hover img {
  transform: scale(1.1);
}

.skill-card span {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.skill-card:hover span {
  color: var(--text-primary);
}

/* ===================================
   PROJECTS SECTION
   =================================== */
.projects {
  background: var(--bg-primary);
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 30px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  overflow: hidden;
  transition: var(--transition);
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow);
  border-color: var(--accent);
}

.project-card__image {
  position: relative;
  height: 200px;
  overflow: hidden;
}

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

.project-card:hover .project-card__image img {
  transform: scale(1.05);
}

.project-card__overlay {
  position: absolute;
  inset: 0;
  background: rgba(15, 15, 26, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
}

.project-card:hover .project-card__overlay {
  opacity: 1;
}

.project-card__link {
  width: 56px;
  height: 56px;
  background: var(--gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.25rem;
  transform: translateY(20px);
  transition: var(--transition);
}

.project-card:hover .project-card__link {
  transform: translateY(0);
}

.project-card__link:hover {
  transform: scale(1.1);
}

.project-card__content {
  padding: 24px;
}

.project-card__content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.project-card__content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 16px;
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  background: rgba(255, 107, 53, 0.15);
  color: var(--accent);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
}

/* ===================================
   EXPERIENCE SECTION
   =================================== */
.experience {
  background: var(--bg-secondary);
}

.experience__timeline {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.experience__item {
  display: flex;
  gap: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 32px;
  transition: var(--transition);
}

.experience__item:hover {
  border-color: var(--accent);
  box-shadow: 0 10px 40px var(--accent-glow);
}

.experience__icon {
  width: 60px;
  height: 60px;
  min-width: 60px;
  background: var(--gradient);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: white;
}

.experience__content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.experience__company {
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 4px;
}

.experience__location {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.experience__details {
  list-style: none;
  color: var(--text-secondary);
}

.experience__details li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 8px;
}

.experience__details li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* ===================================
   CONTACT SECTION
   =================================== */
.contact {
  background: var(--bg-primary);
  padding-bottom: 60px;
}

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

.contact__info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact__card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  overflow: hidden;
  transition: var(--transition);
}

.contact__card:hover {
  border-color: var(--accent);
  transform: translateX(8px);
}

.contact__link {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
}

.contact__link i {
  font-size: 1.75rem;
  color: var(--accent);
}

.contact__link span {
  font-weight: 600;
  display: block;
  margin-bottom: 2px;
}

.contact__link p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.contact__form {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 40px;
}

.form__group {
  margin-bottom: 24px;
}

.form__group label {
  display: block;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.form__group input,
.form__group textarea {
  width: 100%;
  padding: 14px 18px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-size: 1rem;
  transition: var(--transition);
}

.form__group input:focus,
.form__group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-glow);
}

.form__group input::placeholder,
.form__group textarea::placeholder {
  color: var(--text-secondary);
}

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

/* ===================================
   FOOTER
   =================================== */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 40px 0 20px;
}

.footer__content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 24px;
}

.footer__logo h3 {
  font-size: 1.5rem;
  font-weight: 700;
  font-family: var(--font-mono);
  margin-bottom: 4px;
}

.footer__logo p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer__social {
  display: flex;
  gap: 16px;
}

.footer__social a {
  width: 44px;
  height: 44px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--text-secondary);
  transition: var(--transition);
}

.footer__social a:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
  transform: translateY(-4px);
}

.footer__bottom {
  text-align: center;
}

.footer__bottom p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */
@media (max-width: 991px) {
  .hamburger {
    display: flex;
  }

  .nav__links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--bg-secondary);
    flex-direction: column;
    padding: 100px 40px 40px;
    gap: 0;
    transition: var(--transition);
    border-left: 1px solid var(--border-color);
  }

  .nav__links.active {
    right: 0;
  }

  .nav__links a {
    padding: 16px 0;
    font-size: 1.1rem;
    border-bottom: 1px solid var(--border-color);
  }

  .hero {
    flex-direction: column;
    text-align: center;
    padding-top: 100px;
  }

  .hero__content {
    max-width: 100%;
  }

  .hero__buttons {
    justify-content: center;
  }

  .hero__image-wrapper {
    width: 280px;
    height: 280px;
  }

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

  .contact__info {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .contact__card {
    flex: 1;
    min-width: 200px;
  }

  .footer__content {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }
}

@media (max-width: 640px) {
  .section {
    padding: 60px 0;
  }

  .section__subtitle {
    margin-bottom: 40px;
  }

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

  .skills__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .skill-card {
    padding: 24px 16px;
  }

  .skill-card img {
    width: 48px;
    height: 48px;
  }

  .experience__item {
    flex-direction: column;
    padding: 24px;
  }

  .hero__buttons {
    flex-direction: column;
    width: 100%;
  }

  .btn {
    width: 100%;
  }

  .contact__info {
    flex-direction: column;
  }

  .contact__card {
    min-width: 100%;
  }

  .contact__card:hover {
    transform: none;
  }

  .contact__form {
    padding: 24px;
  }
}