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

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

body {
  font-family: var(--font-body);
  background-color: var(--nord0);
  color: var(--nord4);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: var(--nord8);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--nord7);
}

strong {
  color: var(--nord6);
  font-weight: 600;
}

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ========================================
   Navigation
   ======================================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) var(--space-lg);
  background: rgba(46, 52, 64, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--nord2);
}

.nav__logo {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--nord8);
}

.nav__logo:hover {
  color: var(--nord7);
}

.nav__toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
  z-index: 1001;
}

.nav__toggle span {
  width: 24px;
  height: 2px;
  background: var(--nord4);
  transition: var(--transition);
  display: block;
}

.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(5px, -5px);
}

.nav__list {
  display: none;
  list-style: none;
  flex-direction: column;
  position: fixed;
  top: 0;
  right: -100%;
  width: 70%;
  height: 100vh;
  background: var(--nord1);
  padding: 5rem var(--space-xl) var(--space-xl);
  transition: right var(--transition);
  gap: var(--space-lg);
}

.nav__list.active {
  display: flex;
  right: 0;
}

.nav__list a {
  color: var(--nord4);
  font-size: 1.1rem;
  font-weight: 500;
  transition: color var(--transition);
}

.nav__list a:hover {
  color: var(--nord8);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: 5rem var(--space-lg) var(--space-xl);
  position: relative;
  background: linear-gradient(135deg, var(--nord0) 0%, var(--nord1) 100%);
}

.hero__greeting {
  font-family: var(--font-mono);
  color: var(--nord8);
  font-size: 0.9rem;
  margin-bottom: var(--space-xs);
  letter-spacing: 0.05em;
}

.hero__name {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--nord6);
  line-height: 1.2;
  margin-bottom: var(--space-xs);
}

.hero__role {
  font-size: 1.15rem;
  font-weight: 400;
  color: var(--nord9);
  margin-bottom: var(--space-lg);
}

.hero__description {
  font-size: 0.95rem;
  color: var(--nord4);
  max-width: 540px;
  margin-bottom: var(--space-xl);
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 500;
  font-family: var(--font-body);
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
}

.btn--primary {
  background: var(--nord10);
  color: var(--nord6);
  border-color: var(--nord10);
}

.btn--primary:hover {
  background: var(--nord9);
  border-color: var(--nord9);
  color: var(--nord6);
}

.btn--outline {
  background: transparent;
  color: var(--nord8);
  border-color: var(--nord8);
}

.btn--outline:hover {
  background: var(--nord8);
  color: var(--nord0);
}

.hero__scroll {
  display: none;
}

/* ========================================
   Section Styles
   ======================================== */
.section {
  padding: var(--space-3xl) 0;
}

.section--alt {
  background: var(--nord1);
}

.section__title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--nord6);
  margin-bottom: var(--space-2xl);
  position: relative;
  display: inline-block;
}

.section__title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 50px;
  height: 3px;
  background: var(--nord10);
  border-radius: 2px;
}

/* ========================================
   About Section
   ======================================== */
.about__grid {
  display: grid;
  gap: var(--space-xl);
}

.about__text p {
  margin-bottom: var(--space-md);
  font-size: 0.95rem;
  line-height: 1.8;
}

.about__info {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.info-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  background: var(--nord1);
  border-radius: 8px;
  transition: border-color var(--transition);
  padding: var(--space-lg);
}

.info-card:hover {
  border-color: var(--nord3);
}

.info-card__icon {
  width: 52px;
  height: 52px;
  flex-shrink: 0;
}

.info-card__label {
  display: block;
  font-size: 0.75rem;
  color: var(--nord5);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.info-card__value {
  display: block;
  font-size: 0.9rem;
  color: var(--nord5);
  margin-top: 2px;
}

/* ========================================
   Skills Section
   ======================================== */
.skills__grid {
  display: grid;
  gap: var(--space-xl);
}

.skill-category {
  background: var(--nord0);
  padding: var(--space-lg);
  border-radius: 8px;
  border: 1px solid var(--nord2);
}

.skill-category__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--nord8);
  margin-bottom: var(--space-md);
  font-family: var(--font-mono);
}

.skill-category__items {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.skill-tag {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  background: var(--nord2);
  color: var(--nord4);
  font-size: 0.8rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  transition: all var(--transition);
}

.skill-tag:hover {
  background: var(--nord10);
  color: var(--nord6);
}

/* ========================================
   Experience / Timeline
   ======================================== */
.timeline {
  position: relative;
  padding-left: 1.5rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--nord2);
}

.timeline__item {
  position: relative;
  margin-bottom: var(--space-2xl);
}

.timeline__item:last-child {
  margin-bottom: 0;
}

.timeline__marker {
  position: absolute;
  left: -1.5rem;
  top: 0.35rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--nord10);
  border: 2px solid var(--nord0);
  transform: translateX(-5px);
}

.timeline__content {
  background: var(--nord1);
  padding: var(--space-lg);
  border-radius: 8px;
  border: 1px solid var(--nord2);
}

.timeline__header h3 {
  font-size: 1.05rem;
  color: var(--nord6);
  font-weight: 600;
}

.timeline__company {
  display: inline-block;
  color: var(--nord8);
  font-size: 0.9rem;
  font-weight: 500;
  margin-top: 2px;
}

.timeline__date {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--nord3);
  font-family: var(--font-mono);
  margin: var(--space-xs) 0 var(--space-sm);
  padding: 0.2rem 0.6rem;
  background: var(--nord2);
  border-radius: 4px;
}

.timeline__content p {
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.timeline__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.timeline__tags span {
  font-size: 0.75rem;
  padding: 0.2rem 0.6rem;
  background: rgba(136, 192, 208, 0.1);
  color: var(--nord8);
  border: 1px solid rgba(136, 192, 208, 0.2);
  border-radius: 4px;
  font-family: var(--font-mono);
}

/* ========================================
   Education Section
   ======================================== */
.education__grid {
  display: grid;
  gap: var(--space-lg);
}

.education-card {
  background: var(--nord0);
  padding: var(--space-xl);
  border-radius: 8px;
  border: 1px solid var(--nord2);
  text-align: center;
  transition: border-color var(--transition), transform var(--transition);
}

.education-card:hover {
  border-color: var(--nord3);
  transform: translateY(-2px);
}

.education-card__icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
}

.education-card h3 {
  font-size: 1.1rem;
  color: var(--nord6);
  margin-bottom: var(--space-xs);
}

.education-card__institution {
  display: block;
  color: var(--nord8);
  font-size: 0.9rem;
  margin-bottom: var(--space-xs);
}

.education-card__year {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--nord5);
  font-family: var(--font-mono);
  background: var(--nord2);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}

/* ========================================
   Contact Section
   ======================================== */
.contact__text {
  font-size: 0.95rem;
  color: var(--nord4);
  margin-bottom: var(--space-xl);
  max-width: 540px;
  line-height: 1.7;
}

.contact__grid {
  display: grid;
  gap: var(--space-md);
}

.contact-card {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--nord1);
  border-radius: 8px;
  border: 1px solid var(--nord2);
  transition: all var(--transition);
  color: var(--nord4);
}

.contact-card:hover {
  border-color: var(--nord10);
  color: var(--nord4);
  transform: translateY(-2px);
}

.contact-card__icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.contact-card__label {
  display: block;
  font-size: 0.75rem;
  color: var(--nord10);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.contact-card__value {
  display: block;
  font-size: 0.9rem;
  color: var(--nord5);
  margin-top: 2px;
}

/* ========================================
   Footer
   ======================================== */
.footer {
  padding: var(--space-xl) 0;
  background: var(--nord1);
  border-top: 1px solid var(--nord2);
  text-align: center;
}

.footer p {
  font-size: 0.8rem;
  color: var(--nord5);
}

/* ========================================
   Animations
   ======================================== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ========================================
   Responsive - Tablet (640px+)
   ======================================== */
@media (min-width: 640px) {
  .hero__name {
    font-size: 3rem;
  }

  .hero__role {
    font-size: 1.3rem;
  }

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

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

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

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

/* ========================================
   Responsive - Desktop (1024px+)
   ======================================== */
@media (min-width: 1024px) {
  .nav__toggle {
    display: none;
  }

  .nav__list {
    display: flex;
    flex-direction: row;
    position: static;
    width: auto;
    height: auto;
    background: transparent;
    padding: 0;
    gap: var(--space-xl);
  }

  .hero {
    padding: 5rem var(--space-xl);
  }

  .hero__name {
    font-size: 3.5rem;
  }

  .hero__role {
    font-size: 1.5rem;
  }

  .hero__scroll {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
  }

  .hero__scroll span {
    font-size: 0.7rem;
    color: var(--nord3);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-xs);
    font-family: var(--font-mono);
  }

  .hero__scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--nord3), transparent);
    animation: scrollLine 2s ease-in-out infinite;
  }

  @keyframes scrollLine {
    0%, 100% { opacity: 0; transform: scaleY(0); transform-origin: top; }
    50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
  }

  .section__title {
    font-size: 2rem;
  }

  .contact__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ========================================
   Backdrop for mobile menu
   ======================================== */
.nav__overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
}

.nav__overlay.active {
  display: block;
}