/* style.css — rrantsa portfolio */

/* =========================================
   DESIGN TOKENS
   ========================================= */

:root {
  /* Palette */
  --color-cream:        #F5F0E8;
  --color-off-white:    #FAF7F2;
  --color-ink-dark:     #1A1209;
  --color-deep-ink:     #1A1209;
  --color-warm-gray:    #6B6258;
  --color-sienna:       #C1440E;
  --color-sienna-dark:  #9C3208;
  --color-parchment:    #DDD5C5;
  --color-dark-border:  #3A2E22;
  --color-dark-surface: #251C11;
  --color-muted-ink:    #A89F94;

  /* Typography */
  --font-serif:   'Playfair Display', Georgia, serif;
  --font-sans:    'DM Sans', system-ui, sans-serif;

  /* Transitions */
  --transition-fast:   0.15s ease;
  --transition-base:   0.25s ease;
  --transition-lift:   0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-color:  0.2s ease;

  /* Layout */
  --max-width:         1100px;
  --section-pad-v:     6rem;
  --section-pad-h:     clamp(1.5rem, 6vw, 6rem);
  --nav-height:        64px;
}

/* =========================================
   BASE
   ========================================= */

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.7;
  color: var(--color-deep-ink);
  background-color: var(--color-cream);
}

.container {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

@media (min-width: 640px) {
  .container {
    padding-inline: 4rem;
  }
}

@media (min-width: 1024px) {
  .container {
    padding-inline: var(--section-pad-h);
  }
}

/* =========================================
   TYPOGRAPHY HELPERS
   ========================================= */

h1, h2, h3 {
  font-family: var(--font-serif);
  font-weight: 700;
}

h1 {
  font-size: 2.5rem;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 1.75rem;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0;
}

@media (min-width: 1024px) {
  h1 { font-size: 4rem; }
  h2 { font-size: 2.5rem; }
}

.eyebrow {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-sienna);
}

.body-large {
  font-size: 1.125rem;
  line-height: 1.75;
}

.text-small {
  font-size: 0.8125rem;
  line-height: 1.6;
  letter-spacing: 0.01em;
}

/* =========================================
   NAVIGATION
   ========================================= */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  background-color: var(--color-cream);
  border-bottom: 1px solid var(--color-parchment);
  transition: background-color var(--transition-base), backdrop-filter var(--transition-base);
}

.nav.scrolled {
  background-color: rgba(245, 240, 232, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.nav__inner {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

@media (min-width: 640px) {
  .nav__inner {
    padding-inline: 4rem;
  }
}

@media (min-width: 1024px) {
  .nav__inner {
    padding-inline: var(--section-pad-h);
  }
}

.nav__logo {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-ink-dark);
  letter-spacing: 0;
}

.nav__links {
  display: none;
  gap: 2rem;
}

@media (min-width: 768px) {
  .nav__links {
    display: flex;
    align-items: center;
  }
}

.nav__link {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-ink-dark);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  position: relative;
  padding-bottom: 2px;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1.5px;
  background-color: var(--color-sienna);
  transition: width var(--transition-base);
}

.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}

/* Hamburger */
.nav__hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
}

@media (min-width: 768px) {
  .nav__hamburger {
    display: none;
  }
}

.nav__hamburger span {
  display: block;
  width: 100%;
  height: 1.5px;
  background-color: var(--color-ink-dark);
  transition: transform var(--transition-base), opacity var(--transition-base);
  transform-origin: center;
}

.nav__hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.nav__hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav__hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile menu overlay */
.nav__overlay {
  position: fixed;
  inset: 0;
  z-index: 99;
  background-color: var(--color-cream);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 2rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.nav__overlay.open {
  opacity: 1;
  pointer-events: all;
}

.nav__overlay-link {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-ink-dark);
  letter-spacing: -0.01em;
  position: relative;
}

.nav__overlay-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-sienna);
  transition: width var(--transition-base);
}

.nav__overlay-link:hover::after {
  width: 100%;
}

/* =========================================
   HERO
   ========================================= */

.hero {
  background-color: var(--color-cream);
  min-height: 90dvh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  position: relative;
  overflow: hidden;
}

@media (min-width: 1024px) {
  .hero {
    min-height: 100dvh;
  }
}

.hero__inner {
  padding-block: var(--section-pad-v);
  position: relative;
  z-index: 1;
}

.hero__eyebrow {
  margin-bottom: 1.25rem;
}

.hero__heading {
  color: var(--color-ink-dark);
  max-width: 720px;
}

.hero__sub {
  color: var(--color-warm-gray);
  max-width: 560px;
  margin-top: 1.25rem;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2.5rem;
}

.hero__deco {
  position: absolute;
  right: -2vw;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 22vw;
  color: var(--color-parchment);
  line-height: 1;
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

/* =========================================
   BUTTONS
   ========================================= */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.875rem 2rem;
  border-radius: 2px;
  transition: background-color var(--transition-color),
              transform var(--transition-color),
              box-shadow var(--transition-color),
              color var(--transition-color),
              border-color var(--transition-color);
  white-space: nowrap;
}

.btn--primary {
  background-color: var(--color-sienna);
  color: var(--color-off-white);
  border: 1.5px solid var(--color-sienna);
}

.btn--primary:hover {
  background-color: var(--color-sienna-dark);
  border-color: var(--color-sienna-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(193, 68, 14, 0.35);
}

.btn--primary:active {
  transform: translateY(0);
  box-shadow: none;
}

.btn--ghost {
  background-color: transparent;
  color: var(--color-ink-dark);
  border: 1.5px solid var(--color-ink-dark);
}

.btn--ghost:hover {
  background-color: var(--color-ink-dark);
  color: var(--color-cream);
}

.btn--ghost:active {
  transform: translateY(0);
}

/* Ghost button on dark sections */
.section--dark .btn--ghost {
  color: var(--color-cream);
  border-color: var(--color-cream);
}

.section--dark .btn--ghost:hover {
  background-color: var(--color-cream);
  color: var(--color-ink-dark);
}

/* =========================================
   SECTION BASE
   ========================================= */

.section {
  padding-block: var(--section-pad-v);
}

@media (max-width: 639px) {
  .section {
    padding-block: 4rem;
  }
}

.section--cream {
  background-color: var(--color-cream);
  color: var(--color-deep-ink);
}

.section--off-white {
  background-color: var(--color-off-white);
  color: var(--color-deep-ink);
}

.section--dark {
  background-color: var(--color-ink-dark);
  color: var(--color-cream);
}

.section__header {
  margin-bottom: 3rem;
}

.section__header .eyebrow {
  margin-bottom: 0.5rem;
}

/* =========================================
   ABOUT
   ========================================= */

.about {
  background-color: var(--color-ink-dark);
}

.about__inner {
  max-width: 720px;
}

.about__heading {
  color: var(--color-cream);
  margin-bottom: 1.5rem;
}

.about__body p {
  font-size: 1.125rem;
  line-height: 1.75;
  color: var(--color-muted-ink);
  margin-bottom: 1rem;
}

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

.about__body em {
  color: var(--color-cream);
  font-style: italic;
}

.about__highlight {
  color: var(--color-cream) !important;
}

/* =========================================
   PROJECTS
   ========================================= */

.projects {
  background-color: var(--color-cream);
}

.projects__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .projects__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.project-card {
  background-color: var(--color-off-white);
  border: 1px solid var(--color-parchment);
  border-radius: 4px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0;
  transition: transform var(--transition-lift), box-shadow var(--transition-lift);
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(26, 18, 9, 0.10);
}

.project-card__title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-ink-dark);
  line-height: 1.3;
  margin-bottom: 0.5rem;
}

.project-card__desc {
  font-size: 1rem;
  color: var(--color-warm-gray);
  line-height: 1.7;
  flex: 1;
}

.project-card__impact {
  font-size: 0.8125rem;
  color: var(--color-warm-gray);
  line-height: 1.6;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-parchment);
  font-style: italic;
}

.project-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-warm-gray);
  background-color: var(--color-cream);
  border: 1px solid var(--color-parchment);
  border-radius: 99px;
  padding: 0.25rem 0.75rem;
}

.project-card__link {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-sienna);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  transition: color var(--transition-color);
}

.project-card__link:hover {
  text-decoration: underline;
  color: var(--color-sienna-dark);
}

/* =========================================
   SKILLS
   ========================================= */

.skills {
  background-color: var(--color-off-white);
}

.skills__grid {
  display: flex;
  flex-direction: column;
}

.skills__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  padding-block: 1.75rem;
  border-bottom: 1px solid var(--color-parchment);
}

.skills__row:first-child {
  border-top: 1px solid var(--color-parchment);
}

@media (min-width: 768px) {
  .skills__row {
    grid-template-columns: 200px 1fr;
    gap: 2rem;
    align-items: start;
  }
}

.skills__category {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-sienna);
  padding-top: 0.125rem;
}

.skills__items {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-pill {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: var(--color-ink-dark);
  line-height: 1.5;
}

.skill-pill + .skill-pill::before {
  content: '·';
  margin-right: 0.5rem;
  color: var(--color-parchment);
}

/* =========================================
   EDUCATION
   ========================================= */

.education {
  background-color: var(--color-ink-dark);
}

.education__heading {
  color: var(--color-cream);
}

.education__entries {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin-top: 0;
}

.edu-entry {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.5rem;
  padding-left: 1.25rem;
  border-left: 2px solid var(--color-sienna);
}

@media (min-width: 640px) {
  .edu-entry {
    grid-template-columns: 180px 1fr;
    gap: 1.5rem;
    align-items: start;
  }
}

.edu-entry__meta {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  color: var(--color-muted-ink);
  padding-top: 0.25rem;
}

.edu-entry__institution {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-cream);
  line-height: 1.3;
  margin-bottom: 0.25rem;
}

.edu-entry__degree {
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--color-muted-ink);
  line-height: 1.5;
}

/* =========================================
   CONTACT
   ========================================= */

.contact {
  background-color: var(--color-cream);
}

.contact__inner {
  max-width: 600px;
  margin-inline: auto;
  text-align: center;
}

.contact__heading {
  color: var(--color-ink-dark);
  margin-bottom: 1rem;
}

.contact__sub {
  color: var(--color-warm-gray);
  font-size: 1.125rem;
  margin-bottom: 2.5rem;
}

.contact__links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.contact__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--color-warm-gray);
  transition: color var(--transition-color);
}

.contact__social-link:hover {
  color: var(--color-sienna);
}

.contact__social-link svg {
  width: 24px;
  height: 24px;
}

.contact__cta-link {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.5rem;
  color: var(--color-sienna);
  display: inline-block;
  margin-bottom: 2.5rem;
  transition: text-decoration var(--transition-color);
}

@media (min-width: 640px) {
  .contact__cta-link {
    font-size: 1.75rem;
  }
}

.contact__cta-link:hover {
  text-decoration: underline;
}

/* =========================================
   FOOTER
   ========================================= */

.footer {
  background-color: var(--color-ink-dark);
  border-top: 1px solid var(--color-dark-border);
  padding-block: 2rem;
}

.footer__inner {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  text-align: center;
}

@media (min-width: 640px) {
  .footer__inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer__copy {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  color: var(--color-muted-ink);
}

.footer__nav {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

.footer__nav-link {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  color: var(--color-muted-ink);
  transition: color var(--transition-color);
}

.footer__nav-link:hover {
  color: var(--color-sienna);
}

/* =========================================
   SCROLL ANIMATIONS
   ========================================= */

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays for grid children */
.reveal-stagger:nth-child(1) { transition-delay: 0s; }
.reveal-stagger:nth-child(2) { transition-delay: 0.1s; }
.reveal-stagger:nth-child(3) { transition-delay: 0.2s; }
.reveal-stagger:nth-child(4) { transition-delay: 0.3s; }
.reveal-stagger:nth-child(5) { transition-delay: 0.4s; }

/* Respect prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 0;
    transform: none;
    transition: opacity 0.3s ease;
  }

  .reveal.is-visible {
    opacity: 1;
    transform: none;
  }
}