/* ============================================
   Design System — brettadams.net
   Dark, minimal, animated personal landing page
   ============================================ */

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

:root {
  /* Colors */
  --bg-primary: #0a0a0b;
  --bg-secondary: #111113;
  --bg-card: #161618;
  --bg-card-hover: #1c1c1f;
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);

  --text-primary: #f0f0f0;
  --text-secondary: #8a8a8e;
  --text-tertiary: #5a5a5e;

  --accent: #6ee7b7;
  --accent-dim: rgba(110, 231, 183, 0.08);
  --accent-glow: rgba(110, 231, 183, 0.15);

  /* Typography */
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;

  /* Spacing */
  --section-padding: clamp(60px, 8vw, 100px);
  --container-max: 1100px;
  --container-padding: clamp(20px, 5vw, 48px);

  /* Animation */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-base: 0.6s;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
}

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

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

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* --- Animated Background --- */
.bg-grid {
  display: none;
}

/* Animated hero gradient */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 40%, rgba(110, 231, 183, 0.06), transparent),
    radial-gradient(ellipse 60% 80% at 80% 20%, rgba(167, 139, 250, 0.05), transparent),
    radial-gradient(ellipse 70% 50% at 60% 80%, rgba(251, 191, 36, 0.04), transparent);
  animation: hero-glow 12s ease-in-out infinite alternate;
  pointer-events: none;
  z-index: -1;
}

@keyframes hero-glow {
  0% {
    opacity: 0.6;
    transform: scale(1);
  }

  100% {
    opacity: 1;
    transform: scale(1.1);
  }
}

.gradient-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
}

.gradient-orb--1 {
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(110, 231, 183, 0.07), rgba(167, 139, 250, 0.04), transparent 70%);
  top: -250px;
  right: -250px;
  transition: transform 0.3s ease-out;
}

.gradient-orb--2 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(251, 191, 36, 0.04), rgba(167, 139, 250, 0.03), transparent 70%);
  bottom: -200px;
  left: -200px;
  transition: transform 0.3s ease-out;
}

@keyframes float-orb-1 {

  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }

  33% {
    transform: translate(-80px, 60px) scale(1.1);
  }

  66% {
    transform: translate(40px, -40px) scale(0.95);
  }
}

@keyframes float-orb-2 {

  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }

  33% {
    transform: translate(60px, -80px) scale(1.05);
  }

  66% {
    transform: translate(-40px, 40px) scale(1.1);
  }
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding: 20px 0;
  transition: all 0.4s var(--ease-out);
}

.nav--scrolled {
  background: rgba(10, 10, 11, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}

.nav__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  transition: color 0.3s ease;
}

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

.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav__link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.3s ease;
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.3s var(--ease-out);
}

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

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

.nav__link--cta {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 100px;
  transition: all 0.3s ease;
}

.nav__link--cta::after {
  display: none;
}

.nav__link--cta:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

/* --- Hero Section --- */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
  padding: 100px var(--container-padding) 40px;
}

.hero__content {
  max-width: var(--container-max);
  width: 100%;
}

.hero__label {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 10vw, 7rem);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.04em;
  margin-bottom: 28px;
}

.hero__title-line {
  display: block;
}

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

.hero__subtitle {
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 500px;
  margin-bottom: 48px;
}

.hero__highlight {
  color: var(--text-primary);
  font-weight: 500;
}

/* Rotating word carousel */
.rotating-words {
  display: inline-block;
  position: relative;
  overflow-x: visible;
  overflow-y: clip;
  vertical-align: bottom;
}

.rotating-word {
  display: block;
  position: absolute;
  left: 0;
  top: 0;
  opacity: 0;
  transform: translateY(80%);
  transition: opacity 0.4s ease, transform 0.4s var(--ease-out);
  color: var(--accent);
  font-weight: 600;
  white-space: nowrap;
}

/* First word stays in flow to size the container */
.rotating-word:first-child {
  position: relative;
}

.rotating-word.active {
  opacity: 1;
  transform: translateY(0);
}

.rotating-word.exit {
  opacity: 0;
  transform: translateY(-80%);
}

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

.hero__scroll-indicator {
  display: none;
}

.hero__scroll-line {
  display: none;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 100px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s var(--ease-out);
  border: none;
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--accent);
  color: var(--bg-primary);
}

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

.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

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

/* --- Section Labels --- */
.section-label {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 48px;
  position: relative;
  display: inline-block;
}

.section-label::after {
  content: '';
  position: absolute;
  top: 50%;
  left: calc(100% + 16px);
  width: 40px;
  height: 1px;
  background: var(--accent);
  opacity: 0.4;
}

/* --- About Section --- */
.about {
  padding: var(--section-padding) 0;
  position: relative;
  z-index: 1;
}

.about__grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 80px;
  align-items: start;
}

.about__heading {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
  color: var(--text-primary);
}

.about__description {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.about__details {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.about__detail-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: all 0.3s var(--ease-out);
}

.about__detail-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateX(4px);
}

.about__detail-icon {
  font-size: 1.25rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  border-radius: 10px;
  flex-shrink: 0;
}

.about__detail-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 2px;
}

.about__detail-value {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-primary);
}

/* --- Projects Section --- */
.projects {
  padding: var(--section-padding) 0;
  position: relative;
  z-index: 1;
}

.projects__heading {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 48px;
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 36px;
  transition: all 0.4s var(--ease-out);
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-glow), transparent);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.project-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
}

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

.project-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.project-card__icon {
  font-size: 1.75rem;
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  border-radius: 14px;
}

.project-card__badge {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  padding: 6px 12px;
  background: var(--accent-dim);
  border-radius: 100px;
}

.project-card__badge--soon {
  color: var(--text-tertiary);
  background: rgba(255, 255, 255, 0.04);
}

.project-card__title {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.project-card__description {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 24px;
}

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

.tag {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 6px 12px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 100px;
  color: var(--text-tertiary);
  transition: all 0.3s ease;
}

.project-card:hover .tag {
  border-color: var(--border-hover);
  color: var(--text-secondary);
}

/* --- Footer --- */
.footer {
  position: relative;
  z-index: 1;
  padding: 48px 0;
  border-top: 1px solid var(--border);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}

.footer__name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.125rem;
  margin-bottom: 4px;
}

.footer__location {
  font-size: 0.875rem;
  color: var(--text-tertiary);
}

.footer__social {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text-tertiary);
  transition: all 0.3s ease;
}

.footer__social:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

.footer__bottom {
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.footer__copyright {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
}

/* --- Reveal Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity var(--duration-base) var(--ease-out),
    transform var(--duration-base) var(--ease-out);
}

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

/* Stagger children */
.about__detail-card:nth-child(1) {
  transition-delay: 0s;
}

.about__detail-card:nth-child(2) {
  transition-delay: 0.08s;
}

.about__detail-card:nth-child(3) {
  transition-delay: 0.16s;
}

.about__detail-card:nth-child(4) {
  transition-delay: 0.24s;
}

.hero__label {
  transition-delay: 0.1s;
}

.hero__title .reveal:nth-child(1) {
  transition-delay: 0.2s;
}

.hero__title .reveal:nth-child(2) {
  transition-delay: 0.3s;
}

.hero__subtitle {
  transition-delay: 0.4s;
}

.hero__actions {
  transition-delay: 0.55s;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .nav__links {
    gap: 20px;
  }

  .nav__link:not(.nav__link--cta) {
    display: none;
  }

  .hero {
    padding: 100px var(--container-padding) 60px;
    min-height: 85vh;
  }

  .about__grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

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

  .hero__title {
    font-size: clamp(2.75rem, 12vw, 5rem);
  }

  .footer__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }
}

@media (max-width: 480px) {
  .hero__actions {
    flex-direction: column;
  }

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

  .project-card {
    padding: 28px;
  }
}