/* ===== VARIABLES ===== */
:root {
  /* Colors */
  --color-primary: #5d55c9;
  --color-accent: #ef476f;
  --color-dark: #001140;
  --color-text: #1a1a1a;
  --color-text-light: #666666;
  --color-text-lighter: #999999;
  --color-bg: #ffffff;
  --color-bg-alt: #defafe;
  --color-border: #e5e5e5;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
  --space-2xl: 8rem;

  /* Typography */
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;

  /* Effects */
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.12);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-dark);
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
}

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

.container-narrow {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

section {
  padding: var(--space-2xl) 0;
}

.section-title {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: var(--space-lg);
  text-align: center;
}

/* ===== NAVIGATION ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.nav-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-sm) var(--space-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-dark);
}

.nav-logo img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: contain;
  display: block;
}

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

.nav-link {
  font-weight: 500;
  color: var(--color-text);
  font-size: 0.9375rem;
}

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

.nav-link.active {
  color: var(--color-primary);
}

.nav-cta {
  padding: 0.625rem 1.25rem;
  background: var(--color-dark);
  color: white !important;
  border-radius: 8px;
  font-weight: 600;
}

.nav-cta:hover {
  background: var(--color-primary);
  transform: translateY(-2px);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 0.5rem;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-dark);
  transition: var(--transition);
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 80px;
  background: linear-gradient(180deg, #ffffff 0%, #fafafa 100%);
}

.hero-badge {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--color-primary);
  color: white;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  animation: fadeInUp 0.6s ease;
}

.hero-title {
  font-size: 4.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--space-md);
  animation: fadeInUp 0.6s ease 0.1s both;
}

.gradient-text {
  background: linear-gradient(
    135deg,
    var(--color-primary) 0%,
    var(--color-accent) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-lg);
  font-weight: 500;
  animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-cta {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  animation: fadeInUp 0.6s ease 0.3s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  border: none;
}

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

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

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

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

.btn-icon {
  width: 20px;
  height: 20px;
}

/* ===== WORK SECTION ===== */
.work {
  background: var(--color-bg-alt);
}

.project {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
  align-items: center;
}

.project-reverse {
  direction: rtl;
}

.project-reverse > * {
  direction: ltr;
}

.project-image {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.project-image:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

.project-image img {
  width: 100%;
  height: auto;
  display: block;
}

.project-tag {
  display: inline-block;
  padding: 0.375rem 0.75rem;
  background: var(--color-primary);
  color: white;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.project-title {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
}

.project-description {
  color: var(--color-text-light);
  margin-bottom: var(--space-md);
  line-height: 1.7;
}

.project-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  padding: var(--space-md);
  background: white;
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.metric {
  text-align: center;
}

.metric-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 0.25rem;
}

.metric-label {
  font-size: 0.875rem;
  color: var(--color-text-light);
  font-weight: 500;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: var(--space-md);
}

.project-tech span {
  padding: 0.375rem 0.875rem;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 0.875rem;
  color: var(--color-text);
  font-weight: 500;
}

.project-links {
  display: flex;
  gap: var(--space-sm);
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: var(--color-dark);
  color: white;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9375rem;
}

.project-link:hover {
  background: var(--color-primary);
  transform: translateY(-2px);
}

.link-icon {
  width: 18px;
  height: 18px;
}

/* ===== ABOUT SECTION ===== */
.about-content {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--space-xl);
}

.about-lead {
  font-size: 1.375rem;
  line-height: 1.6;
  color: var(--color-dark);
  margin-bottom: var(--space-md);
  font-weight: 500;
}

.about-text p {
  margin-bottom: var(--space-sm);
  color: var(--color-text-light);
  line-height: 1.7;
}

.about-stats {
  margin-top: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.about-stat {
  display: flex;
  gap: var(--space-sm);
  align-items: flex-start;
}

.stat-icon {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
  flex-shrink: 0;
}

.stat-title {
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 0.25rem;
}

.stat-detail {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.5;
}

.about-skills {
  background: var(--color-bg-alt);
  padding: var(--space-md);
  border-radius: 16px;
  border: 1px solid var(--color-border);
}

.about-skills h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-md);
}

.skills-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.skill-category {
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
}

.skill-category:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.skill-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-light);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.skill-items {
  color: var(--color-dark);
  line-height: 1.6;
  font-size: 0.9375rem;
}

/* ===== CONTACT SECTION ===== */
.contact {
  background: var(--color-bg-alt);
}

.contact-intro {
  text-align: center;
  font-size: 1.125rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-xl);
  line-height: 1.6;
}

.contact-methods {
  margin-bottom: var(--space-lg);
}

.contact-primary {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--color-dark);
  color: white;
  border-radius: 16px;
  margin-bottom: var(--space-md);
  transition: var(--transition);
}

.contact-primary:hover {
  background: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.contact-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.contact-label {
  font-size: 0.875rem;
  opacity: 0.8;
  margin-bottom: 0.25rem;
}

.contact-value {
  font-size: 1.25rem;
  font-weight: 600;
}

.contact-arrow {
  width: 24px;
  height: 24px;
  margin-left: auto;
}

.contact-links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
}

.contact-link {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: var(--space-sm);
  background: white;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  color: var(--color-text);
  font-weight: 500;
  transition: var(--transition);
}

.contact-link:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.contact-link i {
  width: 20px;
  height: 20px;
}

.contact-location {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--color-text-light);
  font-size: 0.9375rem;
  margin-top: var(--space-md);
}

.contact-location i {
  width: 16px;
  height: 16px;
}

/* ===== FOOTER ===== */
.footer {
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--color-border);
}

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

.footer-left {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.footer-logo {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  overflow: hidden;
  flex-shrink: 0;
}

.footer-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.footer-left-text {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}

.footer-name {
  font-weight: 600;
  color: var(--color-dark);
  font-size: 0.9375rem;
}

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

.footer-right {
  text-align: right;
}

.footer-right a {
  color: var(--color-dark);
  font-weight: 600;
  margin-bottom: 0.5rem;
  display: block;
}

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

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

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 968px) {
  .project {
    grid-template-columns: 1fr;
  }

  .project-reverse {
    direction: ltr;
  }

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

@media (max-width: 768px) {
  :root {
    --space-lg: 3rem;
    --space-xl: 4rem;
    --space-2xl: 5rem;
  }

  html {
    font-size: 15px;
  }

  .nav-links {
    position: fixed;
    top: 65px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    flex-direction: column;
    padding: var(--space-md);
    gap: var(--space-sm);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }

  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }

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

  .hero-title {
    font-size: 2.5rem;
  }

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

  .hero-cta {
    flex-direction: column;
  }

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

  .project-metrics {
    grid-template-columns: 1fr;
  }

  .contact-links {
    grid-template-columns: 1fr;
  }

  .footer-content {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }

  .footer-right {
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }

  .project-title {
    font-size: 1.5rem;
  }

  .metric-value {
    font-size: 1.5rem;
  }
}

/* ===== UTILITIES ===== */
::selection {
  background: var(--color-primary);
  color: white;
}

::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-alt);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}