/* ================================================================
   STYLE.CSS — Portfolio of John Chrisley Delos Santos
   
   Design System:
   - Display font: Syne (bold, editorial headings)
   - Body font:    Inter (clean readability)
   - Accent:       Warm amber #f0a500 (distinctive, not generic blue)
   - Layout:       Asymmetric, numbered sections, varied grids
   - Vibe:         Premium editorial, not template-y
   
   TABLE OF CONTENTS
   1.  CSS Variables
   2.  Reset & Base Styles
   3.  Utilities
   4.  Scroll Progress Bar
   5.  Navigation
   6.  Hero Section
   7.  Sections (shared)
   8.  About
   9.  Skills
   10. Experience (Timeline)
   11. Projects
   12. Education
   13. Contact
   14. Footer
   15. Scroll-to-Top
   16. Animations & Reveals
   17. Responsive
   ================================================================ */

/* ----------------------------------------------------------------
   1. CSS VARIABLES
   ---------------------------------------------------------------- */
:root {
  /* Surface colors — rich dark, not pure black */
  --clr-bg:         #0c0c0e;
  --clr-bg-alt:     #111114;
  --clr-surface:    #18181c;
  --clr-surface-2:  #1f1f24;
  --clr-border:     #2a2a30;
  --clr-border-light: #3a3a42;

  /* Text */
  --clr-text:       #b8b8c0;
  --clr-text-muted: #78788a;
  --clr-heading:    #ededf0;
  --clr-white:      #ffffff;

  /* Accent — warm amber (change this to retheme the whole site) */
  --clr-accent:       #f0a500;
  --clr-accent-hover: #d4920a;
  --clr-accent-glow:  rgba(240, 165, 0, 0.12);
  --clr-accent-soft:  rgba(240, 165, 0, 0.08);

  /* Typography */
  --ff-display: 'Syne', sans-serif;
  --ff-body:    'Inter', system-ui, -apple-system, sans-serif;

  /* Spacing */
  --section-py: 6rem;
  --container-max: 1140px;

  /* Misc */
  --radius: 10px;
  --radius-lg: 16px;
  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-slow: 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  font-family: var(--ff-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--clr-text);
  background-color: var(--clr-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

::selection {
  background: var(--clr-accent);
  color: var(--clr-bg);
}

a {
  color: var(--clr-accent);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: var(--clr-accent-hover); }

ul { list-style: none; }
img { max-width: 100%; display: block; }
strong { color: var(--clr-heading); }

/* ----------------------------------------------------------------
   3. UTILITIES
   ---------------------------------------------------------------- */
.container {
  width: 90%;
  max-width: var(--container-max);
  margin-inline: auto;
}

.accent { color: var(--clr-accent); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.8rem 1.8rem;
  font-family: var(--ff-body);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius);
  cursor: pointer;
  transition:
    background var(--transition),
    color var(--transition),
    border-color var(--transition),
    transform var(--transition),
    box-shadow var(--transition);
  border: 2px solid transparent;
  text-align: center;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--clr-accent);
  color: var(--clr-bg);
}
.btn--primary:hover {
  background: var(--clr-accent-hover);
  color: var(--clr-bg);
  box-shadow: 0 8px 32px var(--clr-accent-glow);
}

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

.btn--ghost {
  background: transparent;
  color: var(--clr-text-muted);
  border-color: var(--clr-border);
  font-weight: 500;
}
.btn--ghost:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent);
}

.btn--small {
  padding: 0.5rem 1.2rem;
  font-size: 0.85rem;
}

/* ----------------------------------------------------------------
   4. SCROLL PROGRESS BAR
   ---------------------------------------------------------------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: var(--clr-accent);
  z-index: 10000;
  transition: none;
}

/* ----------------------------------------------------------------
   5. NAVIGATION
   ---------------------------------------------------------------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(12, 12, 14, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.header--scrolled {
  border-bottom-color: var(--clr-border);
  box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max);
  width: 90%;
  margin-inline: auto;
  height: 4.5rem;
}

.nav__logo {
  font-family: var(--ff-display);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--clr-heading);
  letter-spacing: -0.02em;
}
.nav__logo:hover { color: var(--clr-accent); }

.nav__menu {
  display: flex;
  gap: 0.25rem;
}

.nav__link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.85rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  border-radius: 8px;
  transition: color var(--transition), background var(--transition);
}
.nav__link:hover {
  color: var(--clr-heading);
  background: var(--clr-surface);
}
.nav__link.active {
  color: var(--clr-accent);
  background: var(--clr-accent-soft);
}

.nav__number {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--clr-accent);
  font-family: var(--ff-display);
}

/* Hamburger */
.nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 1001;
}

.hamburger,
.hamburger::before,
.hamburger::after {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--clr-heading);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger { position: relative; }
.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  left: 0;
}
.hamburger::before { top: -7px; }
.hamburger::after { top: 7px; }

.nav__toggle.open .hamburger { background: transparent; }
.nav__toggle.open .hamburger::before { top: 0; transform: rotate(45deg); }
.nav__toggle.open .hamburger::after { top: 0; transform: rotate(-45deg); }

/* ----------------------------------------------------------------
   6. HERO SECTION
   ---------------------------------------------------------------- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 4.5rem;
  position: relative;
  overflow: hidden;
}

/* Subtle grain texture overlay */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 40%, var(--clr-accent-glow), transparent),
    radial-gradient(ellipse 50% 40% at 20% 80%, rgba(240,165,0,0.04), transparent);
  pointer-events: none;
  z-index: 0;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 3rem;
  max-width: var(--container-max);
  width: 90%;
  margin-inline: auto;
  position: relative;
  z-index: 1;
}

.hero__text {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.hero__label {
  font-family: var(--ff-display);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--clr-accent);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 0.75rem;
}

.hero__name {
  font-family: var(--ff-display);
  font-size: clamp(2.5rem, 5.5vw, 4rem);
  font-weight: 800;
  color: var(--clr-heading);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

.hero__name--outline {
  color: transparent;
  -webkit-text-stroke: 2px var(--clr-heading);
}

.hero__tagline {
  font-family: var(--ff-display);
  font-size: clamp(0.9rem, 1.5vw, 1.05rem);
  font-weight: 500;
  color: var(--clr-text-muted);
  letter-spacing: 0.02em;
  margin-bottom: 1.25rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--clr-border);
}

.hero__description {
  font-size: 1rem;
  color: var(--clr-text);
  max-width: 480px;
  margin-bottom: 2rem;
}

.hero__actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* Profile Image */
.hero__image-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero__image-container {
  position: relative;
  width: 340px;
  height: 420px;
}

.hero__image-frame {
  width: 100%;
  height: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 2px solid var(--clr-border);
  position: relative;
  z-index: 2;
  background: var(--clr-surface);
}

.hero__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  transition: transform 0.5s ease;
}
.hero__image-frame:hover .hero__image {
  transform: scale(1.03);
}

.hero__image-accent {
  position: absolute;
  top: 16px;
  left: 16px;
  right: -16px;
  bottom: -16px;
  border: 2px solid var(--clr-accent);
  border-radius: var(--radius-lg);
  z-index: 1;
  opacity: 0.4;
  transition: opacity var(--transition);
}
.hero__image-container:hover .hero__image-accent {
  opacity: 0.7;
}

/* Scroll indicator */
.hero__scroll {
  position: absolute;
  bottom: 2.5rem;
  left: 5%;
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--clr-text-muted);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  z-index: 1;
}

.hero__scroll-line {
  width: 60px;
  height: 1px;
  background: var(--clr-border-light);
  position: relative;
  overflow: hidden;
}
.hero__scroll-line::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--clr-accent);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0% { left: -100%; }
  50% { left: 0; }
  100% { left: 100%; }
}

/* ----------------------------------------------------------------
   7. SECTIONS (shared)
   ---------------------------------------------------------------- */
.section {
  padding: var(--section-py) 0;
  position: relative;
}

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

.section__header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 3.5rem;
}

.section__number {
  font-family: var(--ff-display);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--clr-accent);
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

.section__title {
  font-family: var(--ff-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--clr-heading);
  letter-spacing: -0.02em;
  position: relative;
}

/* Horizontal line after title */
.section__title::after {
  content: '';
  display: inline-block;
  vertical-align: middle;
  width: clamp(40px, 15vw, 200px);
  height: 1px;
  background: var(--clr-border-light);
  margin-left: 1.5rem;
}

/* ----------------------------------------------------------------
   8. ABOUT
   ---------------------------------------------------------------- */
.about__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.about__statement {
  display: flex;
  align-items: center;
}

.about__big-text {
  font-family: var(--ff-display);
  font-size: clamp(1.4rem, 2.5vw, 1.85rem);
  font-weight: 700;
  color: var(--clr-heading);
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.about__details p {
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

/* Stats bar */
.about__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  padding: 2rem 0;
  border-top: 1px solid var(--clr-border);
}

.stat {
  text-align: center;
  padding: 1rem;
}

.stat__number {
  display: block;
  font-family: var(--ff-display);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--clr-accent);
  line-height: 1;
  margin-bottom: 0.4rem;
}

.stat__label {
  font-size: 0.8rem;
  color: var(--clr-text-muted);
  font-weight: 500;
}

/* ----------------------------------------------------------------
   9. SKILLS
   ---------------------------------------------------------------- */
.skills__categories {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.skill-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  align-items: center;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--clr-border);
  transition: background var(--transition);
}
.skill-row:first-child {
  border-top: 1px solid var(--clr-border);
}
.skill-row:hover {
  background: var(--clr-accent-soft);
}

.skill-row__label {
  font-family: var(--ff-display);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

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

.skill-tag {
  display: inline-block;
  padding: 0.35rem 0.9rem;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--clr-heading);
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-radius: 999px;
  transition: all var(--transition);
  cursor: default;
}
.skill-tag:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent);
  background: var(--clr-accent-glow);
  transform: translateY(-2px);
}

/* ----------------------------------------------------------------
   10. EXPERIENCE (Timeline)
   ---------------------------------------------------------------- */
.timeline {
  position: relative;
  padding-left: 3rem;
}

/* Vertical line */
.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--clr-border);
}

.timeline__item {
  position: relative;
  padding-bottom: 3rem;
}
.timeline__item:last-child {
  padding-bottom: 0;
}

.timeline__marker {
  position: absolute;
  left: -3rem;
  top: 0.35rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--clr-accent);
  border: 3px solid var(--clr-bg);
  transform: translateX(-5px);
  z-index: 2;
  box-shadow: 0 0 0 3px var(--clr-accent-glow);
}

.timeline__content {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color var(--transition), transform var(--transition);
}
.timeline__content:hover {
  border-color: var(--clr-accent);
  transform: translateX(6px);
}

.timeline__date {
  display: inline-block;
  font-family: var(--ff-display);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--clr-accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.6rem;
}

.timeline__role {
  font-family: var(--ff-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--clr-heading);
  margin-bottom: 0.2rem;
}

.timeline__company {
  font-size: 0.9rem;
  color: var(--clr-text-muted);
  margin-bottom: 0.8rem;
}

.timeline__list {
  list-style: none;
}
.timeline__list li {
  position: relative;
  padding-left: 1.2rem;
  margin-bottom: 0.35rem;
  font-size: 0.9rem;
}
.timeline__list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--clr-accent);
  font-weight: 600;
}

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

/* Featured project: full width with different proportions */
.project-card {
  position: relative;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition:
    border-color var(--transition),
    transform var(--transition),
    box-shadow var(--transition);
}
.project-card:hover {
  border-color: var(--clr-accent);
  box-shadow: 0 12px 40px rgba(0,0,0,0.25);
}

/* Non-featured cards sit in the 2-column grid at desktop (see media query below) */

/* When 2nd and 3rd project exist, make them 2-col grid */
.projects__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 769px) {
  .projects__grid {
    grid-template-columns: 1fr 1fr;
  }
  .project-card--featured {
    grid-column: 1 / -1;
  }
}

.project-card__number {
  position: absolute;
  top: 1.25rem;
  right: 1.5rem;
  font-family: var(--ff-display);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--clr-accent);
  opacity: 0.1;
  line-height: 1;
  pointer-events: none;
  transition: opacity var(--transition);
}
.project-card:hover .project-card__number {
  opacity: 0.25;
}

.project-card__body {
  padding: 2rem;
}

.project-card--featured .project-card__body {
  padding: 2.5rem;
}

.project-card__title {
  font-family: var(--ff-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--clr-heading);
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

.project-card--featured .project-card__title {
  font-size: 1.5rem;
}

.project-card__desc {
  font-size: 0.92rem;
  color: var(--clr-text-muted);
  margin-bottom: 1.25rem;
  line-height: 1.65;
  max-width: 600px;
}

.project-card__stack {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.project-card__stack span {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  background: var(--clr-accent-glow);
  color: var(--clr-accent);
  border: 1px solid rgba(240,165,0,0.2);
  letter-spacing: 0.02em;
}

.project-card__links {
  display: flex;
  gap: 0.6rem;
}

/* Subtle accent bar on left of featured card */
.project-card--featured::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--clr-accent);
  border-radius: 0 4px 4px 0;
}

.projects__note {
  text-align: center;
  color: var(--clr-text-muted);
  font-size: 0.9rem;
  margin-top: 2.5rem;
}

/* ----------------------------------------------------------------
   12. EDUCATION
   ---------------------------------------------------------------- */
.education__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.education__card {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: border-color var(--transition), transform var(--transition);
}
.education__card:hover {
  border-color: var(--clr-accent);
  transform: translateY(-4px);
}

.education__icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--clr-accent-glow);
  border: 1px solid rgba(240,165,0,0.2);
  border-radius: 10px;
  color: var(--clr-accent);
}
.education__icon svg {
  width: 22px;
  height: 22px;
}

.education__degree {
  font-family: var(--ff-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--clr-heading);
  margin-bottom: 0.2rem;
}

.education__school {
  font-size: 0.92rem;
  color: var(--clr-accent);
  margin-bottom: 0.3rem;
}

.education__meta {
  font-size: 0.82rem;
  color: var(--clr-text-muted);
}

/* ----------------------------------------------------------------
   13. CONTACT
   ---------------------------------------------------------------- */
.contact__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.contact__big-text {
  font-family: var(--ff-display);
  font-size: clamp(1.3rem, 2.5vw, 1.75rem);
  font-weight: 700;
  color: var(--clr-heading);
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.contact__sub {
  font-size: 0.95rem;
  color: var(--clr-text-muted);
  line-height: 1.65;
}

.contact__links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.contact__item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.1rem 1.5rem;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  color: var(--clr-text);
  transition:
    border-color var(--transition),
    transform var(--transition),
    background var(--transition);
}
.contact__item:hover {
  border-color: var(--clr-accent);
  transform: translateX(6px);
  color: var(--clr-heading);
  background: var(--clr-surface-2);
}

.contact__item-icon {
  width: 40px;
  height: 40px;
  min-width: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--clr-accent-glow);
  border-radius: 10px;
  color: var(--clr-accent);
}
.contact__item-icon svg {
  width: 20px;
  height: 20px;
}

.contact__item-label {
  display: block;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.contact__item-value {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--clr-heading);
}

/* ----------------------------------------------------------------
   14. FOOTER
   ---------------------------------------------------------------- */
.footer {
  background: var(--clr-bg);
  border-top: 1px solid var(--clr-border);
  padding: 2rem 0;
}

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

.footer__copy {
  font-size: 0.82rem;
  color: var(--clr-text-muted);
}

.footer__domain {
  font-family: var(--ff-display);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--clr-text-muted);
  letter-spacing: 0.03em;
}

/* ----------------------------------------------------------------
   15. SCROLL-TO-TOP
   ---------------------------------------------------------------- */
.scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition);
  z-index: 999;
}

.scroll-top svg {
  width: 18px;
  height: 18px;
  color: var(--clr-heading);
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-top:hover {
  background: var(--clr-accent);
  border-color: var(--clr-accent);
}
.scroll-top:hover svg {
  color: var(--clr-bg);
}

/* ----------------------------------------------------------------
   16. ANIMATIONS & REVEALS
   ---------------------------------------------------------------- */

/* Reveal on scroll — elements with [data-reveal] */
[data-reveal] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
[data-reveal]:nth-child(2) { transition-delay: 0.1s; }
[data-reveal]:nth-child(3) { transition-delay: 0.2s; }
[data-reveal]:nth-child(4) { transition-delay: 0.3s; }
[data-reveal]:nth-child(5) { transition-delay: 0.4s; }

/* Subtle bottom border glow on section hover — adds polish */
.section::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 1px;
  background: var(--clr-accent);
  transition: width 0.8s ease;
}

/* ----------------------------------------------------------------
   17. RESPONSIVE
   ---------------------------------------------------------------- */

/* Large screens */
@media (min-width: 1200px) {
  .hero__image-container {
    width: 380px;
    height: 460px;
  }
}

/* Tablet */
@media (max-width: 960px) {
  :root { --section-py: 4.5rem; }

  .hero__inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2.5rem;
  }

  .hero__text { align-items: center; }
  .hero__description { max-width: 100%; }
  .hero__actions { justify-content: center; }
  .hero__image-wrapper { order: -1; }
  .hero__image-container { width: 260px; height: 320px; }
  .hero__scroll { display: none; }

  .about__layout {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    text-align: center;
  }

  .about__stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .skill-row {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .education__grid { grid-template-columns: 1fr; }
  .contact__layout { grid-template-columns: 1fr; text-align: center; }
}

/* Mobile */
@media (max-width: 768px) {
  :root { --section-py: 3.5rem; }

  .nav__toggle { display: block; }

  .nav__menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 5.5rem 1.5rem 2rem;
    background: var(--clr-bg);
    border-left: 1px solid var(--clr-border);
    transition: right var(--transition);
    z-index: 1000;
  }

  .nav__menu.open { right: 0; }

  .nav__link {
    width: 100%;
    padding: 0.9rem 0.5rem;
    font-size: 0.95rem;
    border-bottom: 1px solid var(--clr-border);
    border-radius: 0;
  }

  .hero__name {
    font-size: clamp(2rem, 8vw, 2.8rem);
  }
  .hero__name--outline {
    -webkit-text-stroke-width: 1.5px;
  }

  .hero__actions { flex-direction: column; align-items: center; }
  .hero__actions .btn { width: 100%; max-width: 280px; justify-content: center; }

  .about__stats { grid-template-columns: repeat(2, 1fr); }

  .section__header { margin-bottom: 2.5rem; }
  .section__title::after { display: none; }

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

  .footer__inner {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}

/* Small phone */
@media (max-width: 480px) {
  .hero__image-container { width: 200px; height: 250px; }
  .about__stats { grid-template-columns: 1fr 1fr; gap: 0.5rem; }
  .project-card__body { padding: 1.5rem; }
  .timeline { padding-left: 2rem; }
  .timeline__marker { left: -2rem; }
}

/* Mobile nav overlay */
.nav__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
}
.nav__overlay.visible {
  opacity: 1;
  visibility: visible;
}