/* ============================================================
   iPhone Tribute — Premium CSS
   ============================================================ */

:root {
  --black: #000000;
  --near-black: #0a0a0a;
  --dark-1: #111111;
  --dark-2: #1a1a1a;
  --dark-3: #222222;
  --gray-1: #3a3a3a;
  --gray-2: #5a5a5a;
  --gray-3: #8a8a8a;
  --gray-4: #b0b0b0;
  --silver: #c8c8c8;
  --light: #e8e8e8;
  --white: #ffffff;
  --gold: #c9a84c;
  --gold-light: #e6c876;
  --transition-fast: 0.2s ease;
  --transition-med: 0.4s ease;
  --transition-slow: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
  background-color: var(--black);
  color: var(--white);
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.5;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

/* ---- Scroll animations ---- */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1), transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1), transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1), transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.45s; }
.delay-5 { transition-delay: 0.6s; }

/* ---- Navbar ---- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 52px;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: background var(--transition-med);
}

.navbar.scrolled {
  background: rgba(0, 0, 0, 0.92);
}

.navbar__logo {
  width: 22px;
  height: auto;
  filter: invert(1);
  opacity: 0.9;
}

.navbar__links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.navbar__links a {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--light);
  letter-spacing: 0.01em;
  transition: color var(--transition-fast);
}

.navbar__links a:hover {
  color: var(--white);
}

.navbar__cta {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--white);
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 980px;
  padding: 0.35rem 1rem;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.navbar__cta:hover {
  background: rgba(255, 255, 255, 0.22);
  border-color: rgba(255, 255, 255, 0.3);
}

/* ---- Hero ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  overflow: hidden;
  padding-bottom: 10vh;
}

.hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  z-index: 0;
  transform: scale(1.04);
  transition: transform 0.1s linear;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0,0,0,0.25) 0%,
    rgba(0,0,0,0.1) 40%,
    rgba(0,0,0,0.6) 75%,
    rgba(0,0,0,0.95) 100%
  );
  z-index: 1;
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 1.5rem;
  max-width: 780px;
}

.hero__tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold-light);
  margin-bottom: 1.4rem;
  opacity: 0;
  animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1) 0.3s forwards;
}

.hero__headline {
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.04;
  color: var(--white);
  margin-bottom: 1.2rem;
  opacity: 0;
  animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1) 0.5s forwards;
}

.hero__subheadline {
  font-size: clamp(1rem, 2.2vw, 1.35rem);
  font-weight: 300;
  color: var(--silver);
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1) 0.7s forwards;
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1rem;
  font-weight: 500;
  color: var(--white);
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 980px;
  padding: 0.8rem 2.2rem;
  letter-spacing: 0.01em;
  transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
  opacity: 0;
  animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1) 0.9s forwards;
}

.hero__cta:hover {
  background: rgba(255, 255, 255, 0.22);
  border-color: rgba(255, 255, 255, 0.45);
  transform: scale(1.03);
}

.hero__scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  opacity: 0;
  animation: fadeIn 1s ease 1.4s forwards;
}

.hero__scroll-indicator span {
  display: block;
  width: 1px;
  height: 42px;
  background: linear-gradient(to bottom, transparent, rgba(255,255,255,0.5));
  animation: scrollLine 2s ease-in-out infinite;
}

/* ---- Section shared ---- */
.section {
  padding: 7rem 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section--full {
  max-width: none;
  padding-left: 0;
  padding-right: 0;
}

.section__eyebrow {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
}

.section__title {
  font-size: clamp(2rem, 4.5vw, 3.6rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.08;
  color: var(--white);
  margin-bottom: 1.4rem;
}

.section__body {
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  font-weight: 300;
  color: var(--gray-4);
  line-height: 1.75;
  max-width: 640px;
}

/* ---- About ---- */
.about {
  background: var(--near-black);
}

.about__inner {
  padding: 7rem 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.about__image-wrap {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  aspect-ratio: 9/16;
  max-height: 600px;
}

.about__image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.about__image-wrap:hover img {
  transform: scale(1.04);
}

.about__image-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(201,168,76,0.06) 0%, transparent 60%);
  pointer-events: none;
}

.about__text {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.about__stat-row {
  display: flex;
  gap: 2.5rem;
  margin-top: 1rem;
}

.about__stat {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.about__stat-number {
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--white);
  line-height: 1;
}

.about__stat-label {
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--gray-3);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ---- Gallery ---- */
.gallery {
  background: var(--black);
  padding: 7rem 0;
}

.gallery__header {
  padding: 0 1.5rem;
  max-width: 1200px;
  margin: 0 auto 4rem;
}

.gallery__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: auto auto;
  gap: 3px;
  padding: 0 3px;
}

.gallery__item {
  position: relative;
  overflow: hidden;
  background: var(--dark-2);
  cursor: pointer;
}

.gallery__item:first-child {
  grid-column: 1 / 3;
  grid-row: 1;
}

.gallery__item:nth-child(3) {
  grid-column: 3;
  grid-row: 1;
}

.gallery__item:nth-child(4) {
  grid-column: 4;
  grid-row: 1;
}

.gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 1;
  transition: transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  display: block;
}

.gallery__item:hover img {
  transform: scale(1.06);
}

.gallery__item-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0);
  transition: background var(--transition-med);
  display: flex;
  align-items: flex-end;
  padding: 1.5rem;
}

.gallery__item:hover .gallery__item-overlay {
  background: rgba(0,0,0,0.35);
}

.gallery__item-label {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--transition-med), transform var(--transition-med);
}

.gallery__item:hover .gallery__item-label {
  opacity: 1;
  transform: translateY(0);
}

/* ---- Features ---- */
.features {
  background: var(--near-black);
}

.features__inner {
  padding: 7rem 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.features__header {
  margin-bottom: 5rem;
  max-width: 640px;
}

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

.feature-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 2.5rem;
  padding: 2.5rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  align-items: start;
  transition: background var(--transition-fast);
}

.feature-item:last-child {
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.feature-item__icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--dark-3);
  border: 1px solid rgba(255, 255, 255, 0.07);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background var(--transition-med), border-color var(--transition-med);
  color: var(--silver);
}

.feature-item:hover .feature-item__icon {
  background: var(--gray-1);
  border-color: rgba(255, 255, 255, 0.15);
  color: var(--white);
}

.feature-item__content {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding-top: 0.6rem;
}

.feature-item__title {
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--white);
}

.feature-item__desc {
  font-size: 1rem;
  font-weight: 300;
  color: var(--gray-3);
  line-height: 1.7;
  max-width: 560px;
}

.feature-item__number {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--gray-2);
  letter-spacing: 0.1em;
  margin-bottom: 0.8rem;
}

/* ---- Timeline ---- */
.timeline {
  background: var(--black);
  padding: 7rem 1.5rem;
}

.timeline__inner {
  max-width: 1200px;
  margin: 0 auto;
}

.timeline__header {
  margin-bottom: 5rem;
  max-width: 580px;
}

.timeline__track {
  position: relative;
  padding-left: 2rem;
}

.timeline__line {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, transparent, rgba(255,255,255,0.12) 5%, rgba(255,255,255,0.12) 95%, transparent);
}

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

.timeline__item {
  position: relative;
  padding: 2rem 0 2rem 2.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 2rem;
  align-items: start;
  transition: opacity var(--transition-fast);
}

.timeline__item::before {
  content: '';
  position: absolute;
  left: -4.5px;
  top: 2.6rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--gray-2);
  border: 1px solid var(--dark-1);
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.timeline__item:hover::before {
  background: var(--gold);
  transform: scale(1.4);
}

.timeline__item:first-child::before {
  background: var(--gold);
}

.timeline__year {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--gold);
  padding-top: 0.15rem;
}

.timeline__info {}

.timeline__milestone {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 0.35rem;
  letter-spacing: -0.01em;
}

.timeline__detail {
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--gray-3);
  line-height: 1.65;
}

/* ---- CTA Section ---- */
.cta-section {
  background: var(--dark-1);
  padding: 9rem 1.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201,168,76,0.07) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section__inner {
  position: relative;
  z-index: 1;
  max-width: 680px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.8rem;
}

.cta-section__title {
  font-size: clamp(2rem, 4.5vw, 3.4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--white);
}

.cta-section__body {
  font-size: 1.1rem;
  font-weight: 300;
  color: var(--gray-4);
  line-height: 1.7;
}

.cta-section__buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 0.5rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--black);
  background: var(--white);
  border-radius: 980px;
  padding: 0.8rem 2rem;
  letter-spacing: 0.01em;
  transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  border: none;
}

.btn-primary:hover {
  background: var(--light);
  transform: scale(1.03);
  box-shadow: 0 8px 32px rgba(255,255,255,0.15);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--white);
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 980px;
  padding: 0.8rem 2rem;
  letter-spacing: 0.01em;
  transition: border-color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
}

.btn-secondary:hover {
  border-color: rgba(255, 255, 255, 0.55);
  background: rgba(255, 255, 255, 0.06);
  transform: scale(1.03);
}

/* ---- Footer ---- */
.footer {
  background: var(--near-black);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 3.5rem 1.5rem;
}

.footer__inner {
  max-width: 1200px;
  margin: 0 auto;
}

.footer__top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  flex-wrap: wrap;
}

.footer__logo {
  width: 24px;
  filter: invert(1);
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.footer__logo:hover {
  opacity: 1;
}

.footer__links {
  display: flex;
  gap: 3.5rem;
  flex-wrap: wrap;
}

.footer__col {}

.footer__col-title {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-3);
  margin-bottom: 1rem;
}

.footer__col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer__col a {
  font-size: 0.82rem;
  font-weight: 400;
  color: var(--gray-4);
  transition: color var(--transition-fast);
}

.footer__col a:hover {
  color: var(--white);
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 2rem;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer__copy {
  font-size: 0.75rem;
  color: var(--gray-2);
  line-height: 1.6;
}

.footer__socials {
  display: flex;
  gap: 1.2rem;
}

.footer__social-link {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-3);
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.footer__social-link:hover {
  color: var(--white);
  border-color: rgba(255,255,255,0.3);
}

/* ---- Keyframes ---- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

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

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .about__inner {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .about__image-wrap {
    aspect-ratio: 16/10;
    max-height: 340px;
  }

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

  .gallery__item:first-child {
    grid-column: 1 / 3;
  }

  .gallery__item:nth-child(3),
  .gallery__item:nth-child(4) {
    grid-column: auto;
  }

  .navbar__links {
    display: none;
  }

  .timeline__item {
    grid-template-columns: 80px 1fr;
    gap: 1.2rem;
  }

  .feature-item {
    grid-template-columns: 60px 1fr;
    gap: 1.5rem;
  }
}

@media (max-width: 600px) {
  .hero__content {
    padding: 0 1rem;
  }

  .gallery__grid {
    grid-template-columns: 1fr 1fr;
    gap: 2px;
  }

  .gallery__item:first-child {
    grid-column: 1 / 3;
  }

  .about__stat-row {
    gap: 1.5rem;
  }

  .footer__top {
    flex-direction: column;
    gap: 2.5rem;
  }

  .footer__links {
    gap: 2rem;
  }

  .cta-section__buttons {
    flex-direction: column;
    align-items: center;
  }

  .timeline__item {
    grid-template-columns: 1fr;
    gap: 0.3rem;
  }
}

/* ---- Utility: thin horizontal rule ---- */
.divider {
  width: 40px;
  height: 1px;
  background: var(--gold);
  margin: 1.8rem 0;
}