/* ============================================
   THE LOOKBACK — Better Off® Studio
   Full CSS Recreation
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;900&display=swap');

/* ---- Variables ---- */
:root {
  --white: #fff;
  --black: #000;
  --gray-light: #f9f9f9;
  --gray-medium: #f1f1f1;
  --gray-dark: #e0e0e0;
  --purple: rgb(125, 69, 180);
  --purple-light: rgb(238, 227, 249);
  --font-sans: 'Inter', sans-serif;
  --font-mono: 'Inter', monospace;

  /* fluid size: scales between 390px and 1500px viewport */
  --base: clamp(1px, calc(100vw / 78), 20px);
  --logo-size: clamp(3rem, 11.7vw, 160px);
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  font-size: var(--base);
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: none;
  overscroll-behavior: none;
  background: var(--white);
  color: var(--black);
  /* Hide the system cursor to show our custom square one */
  cursor: none;
}
body {
  font-family: var(--font-sans);
  font-size: clamp(1.4rem, 1.8rem, 18px);
  font-weight: 500;
  line-height: 1.3;
  overscroll-behavior: none;
  width: 100%;
  cursor: none;
}

/* Custom Cursor */
.cursor-dot, .cursor-trail {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 10000;
  mix-blend-mode: difference;
  background: var(--white);
  will-change: transform;
}
.cursor-dot {
  width: 6px;
  height: 6px;
  border-radius: 1px;
}
.cursor-trail {
  width: 24px;
  height: 24px;
  background: transparent;
  border: 1px solid var(--white);
  border-radius: 2px;
  transition: transform 0.05s linear;
}
/* Active/Hover states */
.cursor-active .cursor-dot { transform: scale(0.5); }
.cursor-active .cursor-trail { transform: scale(1.5); }
img, video { display: block; max-width: 100%; height: auto; }
button { cursor: pointer; background: none; border: none; font: inherit; }

/* ---- Load Mask ---- */
.load-mask {
  position: fixed;
  inset: 0;
  background: var(--white);
  z-index: 9999;
  transition: opacity 0.6s ease-out;
  pointer-events: none;
}
.load-mask.is-hidden {
  opacity: 0;
}

/* ---- Logo (fixed overlay, mix-blend-difference) ---- */
.logo-wrap {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  z-index: 10;
  pointer-events: none;
  mix-blend-mode: difference;
  color: var(--white);
  padding-top: clamp(0.5rem, 1.5vw, 2rem);
  will-change: transform;
}

.logo-inner {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  max-width: clamp(300px, 90vw, 1400px);
  /* Height needs to accommodate the tallest state (state 1 = 3 lines) */
  min-height: calc(var(--logo-size) * 3 * 0.85 + 0.5rem);
}

/* Logo states */
.logo-state {
  width: 100%;
  text-align: center;
  position: absolute;
  top: 0;
  left: 0;
}
.logo-state--1 { opacity: 1; }
.logo-state--2 { opacity: 0; }

.logo-line {
  display: flex;
  justify-content: center;
  align-items: baseline;
  gap: 0.175em;
  letter-spacing: -0.01em;
  line-height: 0.85;
  font-size: var(--logo-size);
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
}
.logo-line--2 { text-transform: uppercase; }
.logo-line--3 { text-transform: uppercase; }
.logo-line--compact {
  display: flex;
  justify-content: center;
  font-size: calc(var(--logo-size) * 0.45);
  font-weight: 900;
  line-height: 0.8;
  letter-spacing: -0.02em;
}

.logo-word {
  display: flex;
  position: relative;
}

.logo-char {
  display: inline-block;
  will-change: transform, opacity;
}
.logo-char--slide {
  transform: translateY(100%);
  transition: transform 0.7s cubic-bezier(0.19, 1, 0.22, 1);
}
.logo-char--slide.is-visible {
  transform: translateY(0);
}
.logo-char--scale {
  transform-origin: top left;
}

/* Logo state 2 chars */
.logo-char--s2 {
  display: inline-block;
  transform: translateY(-100%);
  transition: transform 0.7s cubic-bezier(0.19, 1, 0.22, 1);
}
.logo-char--s2.is-visible {
  transform: translateY(0);
}

/* ---- Nav Bar ---- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 11;
  padding: clamp(1rem, 1.8vw, 2.8rem) clamp(1rem, 2vw, 3rem);
  mix-blend-mode: difference;
  color: var(--white);
  pointer-events: auto;
  display: flex;
  align-items: flex-start;
}
.nav__inner {
  display: flex;
  width: 100%;
  justify-content: space-between;
  align-items: flex-start;
}
.nav__label, .nav__title, .nav__btn {
  font-family: var(--font-mono);
  font-size: clamp(0.9rem, 1.2vw, 1.4rem);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  line-height: 1;
  white-space: nowrap;
}
.nav__left { opacity: 0; transition: opacity 0.5s ease 0.8s; }
.nav__right { opacity: 0; transition: opacity 0.5s ease 1.2s; }

.nav__center {
  transition: opacity 0.4s ease;
}
.nav__center.is-hidden {
  opacity: 0 !important;
  pointer-events: none;
}

.nav.is-visible .nav__left,
.nav.is-visible .nav__center,
.nav.is-visible .nav__right {
  opacity: 1;
}

.nav__btn {
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: inherit;
  mix-blend-mode: difference;
  position: relative;
  z-index: 12;
}

.hamburger {
  display: block;
  width: 1.6rem;
  height: 2px;
  background: currentColor;
  position: relative;
  transition: transform 1s cubic-bezier(0.19, 1, 0.22, 1);
}
.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  height: 100%;
  background: currentColor;
  transition: transform 1s cubic-bezier(0.19, 1, 0.22, 1);
}
.hamburger::before { transform: translateY(-4px); }
.hamburger::after  { transform: translateY(4px); }

.is-menu .hamburger::before { transform: rotate(45deg); }
.is-menu .hamburger::after  { transform: rotate(-45deg); }

/* ---- Carousel Layer (fixed, full screen) ---- */
.carousel-layer {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  z-index: 1;
  cursor: grab;
}
.carousel-layer:active { cursor: grabbing; }

.carousel {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: flex-end;
  padding-bottom: clamp(3rem, 15vh, 12rem);
  will-change: transform;
}

.carousel__track {
  display: flex;
  align-items: flex-end;
  padding-left: clamp(1rem, 2vw, 3rem);
  gap: 0;
  will-change: transform;
  /* Track is translated by JS */
  user-select: none;
}

/* ---- Carousel Cards ---- */
.card {
  flex: 0 0 auto;
  position: relative;
  /* Control height to ensure panels stay below the R26 heading */
  height: clamp(150px, 42vh, 480px); 
  width: auto;
  margin-right: clamp(2rem, 4vw, 8rem);
  cursor: pointer;
  /* Ensure no cropping by using exact measured aspect ratio */
  aspect-ratio: var(--aspect);
}

.card--small  { height: clamp(200px, 45vh, 520px); }
.card--medium { height: clamp(280px, 62vh, 720px); }
.card--large  { height: clamp(320px, 75vh, 880px); }

.card__label-top,
.card__label-bottom {
  position: absolute;
  left: 0;
  font-family: var(--font-mono);
  font-size: clamp(0.8rem, 1.1vw, 1.4rem);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  overflow: hidden;
  height: 1.4em;
  white-space: nowrap;
}
.card__label-top {
  bottom: 100%;
  margin-bottom: 1.2rem;
}
.card__label-bottom {
  top: 100%;
  margin-top: 1.2rem;
}
.card__label-inner {
  display: block;
  transition: transform 0.7s cubic-bezier(0.19, 1, 0.22, 1);
}
.card__label-top .card__label-inner { transform: translateY(100%); }
.card__label-bottom .card__label-inner { transform: translateY(-100%); }

.card:hover .card__label-top .card__label-inner { transform: translateY(0); }
.card:hover .card__label-bottom .card__label-inner { transform: translateY(0); }

/* Card image area - now fills the card which is height-limited */
.card__media {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--black);
  border-radius: 0;
}
.card__media img {
  width: 100%;
  height: 100%;
  /* Contain ensures zero content is cut off, even in edge cases */
  object-fit: contain; 
  display: block;
  transform-origin: center;
  transition: transform 0.3s ease;
  pointer-events: none;
  user-select: none;
  -webkit-user-drag: none;
}

/* Hover scale */
.card:hover .card__media img {
  transform: scale(1.02);
}

/* ---- Scroll driver (virtual scroll space) ---- */
.scroll-driver {
  position: relative;
  z-index: 0;
  /* Height set by JS based on track width */
}

/* ---- Info Bar (bottom) ---- */
.info-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: clamp(1rem, 1.8vw, 2rem) clamp(1rem, 2vw, 3rem);
  mix-blend-mode: difference;
  color: var(--white);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.5s ease 1.5s;
}
.info-bar.is-visible { opacity: 1; }
.info-bar__label,
.info-bar__counter {
  font-family: var(--font-mono);
  font-size: clamp(0.8rem, 1.1vw, 1.4rem);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ---- About Overlay ---- */
.about-overlay {
  position: fixed;
  inset: 0;
  background: var(--white);
  z-index: 100;
  display: flex;
  flex-direction: column;
  padding: clamp(1rem, 2vw, 3rem);
  transform: translateY(-100%);
  transition: transform 0.7s cubic-bezier(0.19, 1, 0.22, 1);
}
.about-overlay.is-open {
  transform: translateY(0);
}
.about__header {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 3rem;
}
.about__close {
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: clamp(1rem, 1.4vw, 1.8rem);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.x-icon {
  display: block;
  width: 1.8rem;
  height: 2px;
  position: relative;
  background: transparent;
}
.x-icon::before, .x-icon::after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 2px;
  background: var(--black);
}
.x-icon::before { transform: rotate(45deg); }
.x-icon::after  { transform: rotate(-45deg); }

.about__content {
  max-width: 60rem;
  font-size: clamp(1.6rem, 2.5vw, 3.2rem);
  font-weight: 500;
  line-height: 1.2;
}
.about__tagline {
  margin-bottom: 2rem;
}
.about__links {
  margin-top: 4rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.about__link {
  font-family: var(--font-mono);
  font-size: clamp(1rem, 1.4vw, 1.8rem);
  text-transform: uppercase;
  color: var(--black);
  text-decoration: none;
  border-bottom: 1px solid var(--black);
  padding-bottom: 0.3rem;
  display: inline-block;
  width: max-content;
  transition: color 0.3s ease;
}
.about__link:hover { color: var(--purple); border-color: var(--purple); }

/* ---- Cursor line hover (underline animation) ---- */
.uline {
  position: relative;
  display: inline-flex;
  white-space: nowrap;
}
.uline::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 0.05em;
  min-height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.75s cubic-bezier(0.19, 1, 0.22, 1);
}
.uline:hover::before {
  transform: scaleX(1);
  transform-origin: left;
}

/* ---- Section divider labels ---- */
.section-year-label {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 2px;
  height: 100%;
  background: rgba(0,0,0,0.12);
  z-index: 3;
}

/* ---- Flip/scale on click card open ---- */
.card.is-expanding {
  z-index: 50;
}

/* ---- Responsive adjustments ---- */
@media (max-width: 649px) {
  .card {
    width: clamp(160px, 75vw, 280px);
  }
  .nav__center { display: none; }
  .logo-line {
    font-size: clamp(3rem, 18vw, 80px);
  }
}

/* ---- Utility ---- */
.hidden { display: none !important; }
.invisible { visibility: hidden; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border-width: 0;
}

/* ============================================
   Year divider indicator (floating)
   ============================================ */
.year-float {
  position: fixed;
  bottom: clamp(1rem, 2vw, 3rem);
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  font-family: var(--font-mono);
  font-size: clamp(0.8rem, 1.1vw, 1.4rem);
  text-transform: uppercase;
  mix-blend-mode: difference;
  color: var(--white);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s ease;
}
.year-float.is-visible { opacity: 1; }

/* ============================================
   Loading spinner  (optional pulse)
   ============================================ */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* ============================================
   Dark section adaptations
   ============================================ */
.is-dark .nav { mix-blend-mode: normal; color: var(--white); }
.is-dark .info-bar { mix-blend-mode: normal; color: var(--white); }

/* ============================================
   Smooth logo transition
   ============================================ */
.logo-state--1 {
  transition: opacity 0.38s ease;
}
.logo-state--2 {
  transition: opacity 0.38s ease;
}
.logo-state--1.is-hidden { opacity: 0; pointer-events: none; }
.logo-state--2.is-shown  { opacity: 1; }

/* ============================================
   Card numbering
   ============================================ */
.card__num {
  position: absolute;
  bottom: 100%;
  left: 0;
  margin-bottom: 1.2rem;
  font-family: var(--font-mono);
  font-size: clamp(0.8rem, 1.1vw, 1.4rem);
  text-transform: uppercase;
  overflow: hidden;
  height: 1.4em;
}
.card__num-inner {
  display: block;
  transform: translateY(100%);
  transition: transform 0.7s cubic-bezier(0.19, 1, 0.22, 1);
}
.card:hover .card__num-inner {
  transform: translateY(0);
}

/* Progress bar at the very bottom  */
.progress-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  height: 2px;
  background: var(--black);
  z-index: 20;
  width: 0%;
  transition: width 0.1s linear;
  mix-blend-mode: difference;
}

/* ============================================
   MUSIC PLAYER DROPDOWN
   ============================================ */

/* Wrapper — sits in nav__right */
.music-player {
  position: relative;
  display: flex;
  align-items: center;
}

/* Trigger button */
.music-player__btn {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-mono);
  font-size: clamp(0.8rem, 1.1vw, 1.3rem);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: inherit;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0.3rem 0;
  white-space: nowrap;
  line-height: 1;
}

.music-player__icon {
  display: flex;
  align-items: center;
  width: 14px;
  flex-shrink: 0;
}

.music-player__now-playing {
  max-width: 16rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.music-player__chevron {
  display: flex;
  align-items: center;
  transition: transform 0.35s cubic-bezier(0.19, 1, 0.22, 1);
  flex-shrink: 0;
}
.music-player.is-open .music-player__chevron {
  transform: rotate(180deg);
}

/* Equalizer animation (3 bars) shown when playing */
.music-player__eq {
  display: none;
  align-items: flex-end;
  gap: 2px;
  height: 14px;
  width: 16px;
}
.music-player.is-playing .music-player__eq { display: flex; }
.music-player.is-playing .music-player__icon svg { display: none; }

.eq-bar {
  width: 3px;
  background: currentColor;
  border-radius: 1px;
  animation: eq-bounce 0.8s ease-in-out infinite alternate;
}
.eq-bar:nth-child(1) { height: 6px;  animation-delay: 0s; }
.eq-bar:nth-child(2) { height: 12px; animation-delay: 0.2s; }
.eq-bar:nth-child(3) { height: 8px;  animation-delay: 0.1s; }

@keyframes eq-bounce {
  0%   { transform: scaleY(0.3); }
  100% { transform: scaleY(1); }
}

/* Dropdown panel */
.music-player__dropdown {
  position: absolute;
  top: calc(100% + 0.8rem);
  right: 0;
  width: clamp(200px, 24vw, 280px);
  background: rgba(10, 10, 10, 0.94);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 0.4rem;
  overflow: hidden;
  z-index: 200;
  /* Hidden state */
  opacity: 0;
  pointer-events: none;
  transform: translateY(-4px);
  transition:
    opacity 0.25s cubic-bezier(0.19, 1, 0.22, 1),
    transform 0.35s cubic-bezier(0.19, 1, 0.22, 1);
}
.music-player.is-open .music-player__dropdown {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

/* Track list */
.music-player__track-list {
  padding: 0.4rem 0;
  max-height: 240px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.1) transparent;
}
.music-player__track-list::-webkit-scrollbar {
  width: 4px;
}
.music-player__track-list::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.1);
  border-radius: 2px;
}

.track-item {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.6rem 1rem;
  cursor: pointer;
  transition: background 0.2s ease;
  color: rgba(255,255,255,0.6);
  font-family: var(--font-mono);
  font-size: clamp(0.7rem, 0.85vw, 1rem);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  line-height: 1.2;
  position: relative;
}
.track-item:hover {
  background: rgba(255,255,255,0.07);
  color: #fff;
}
.track-item.is-active {
  color: #fff;
  background: rgba(255,255,255,0.05);
}
.track-item.is-active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: #fff;
}

.track-item__num {
  font-size: 0.85em;
  opacity: 0.35;
  width: 1.5rem;
  text-align: right;
  flex-shrink: 0;
}
.track-item.is-active .track-item__num { opacity: 0; }

.track-item__eq {
  display: none;
  position: absolute;
  left: 1.4rem;
  top: 50%;
  transform: translateY(-50%);
  align-items: flex-end;
  gap: 2px;
  height: 12px;
  width: 16px;
}
.track-item.is-active .track-item__eq {
  display: flex;
}

.track-item__eq .eq-bar {
  width: 2.5px;
}

.track-item__info {
  flex: 1;
  min-width: 0;
}
.track-item__title {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: block;
  line-height: 1.4;
}
.track-item__duration {
  font-size: 0.78em;
  opacity: 0.4;
  display: block;
  margin-top: 0.15rem;
  font-variant-numeric: tabular-nums;
}

/* Divider */
.music-player__divider {
  height: 1px;
  background: rgba(255,255,255,0.1);
  margin: 0.4rem 0;
}

/* Progress track */
.music-player__progress-wrap {
  padding: 0.8rem 1.4rem 1rem;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.music-player__progress-bar {
  width: 100%;
  height: 3px;
  background: rgba(255,255,255,0.15);
  border-radius: 999px;
  overflow: hidden;
  cursor: pointer;
  position: relative;
}
.music-player__progress-fill {
  height: 100%;
  background: #fff;
  width: 0%;
  border-radius: 999px;
  transition: width 0.2s linear;
  pointer-events: none;
}
.music-player__time-row {
  display: flex;
  justify-content: space-between;
  margin-top: 0.5rem;
}
.music-player__time {
  font-family: var(--font-mono);
  font-size: clamp(0.65rem, 0.9vw, 1rem);
  color: rgba(255,255,255,0.4);
  font-variant-numeric: tabular-nums;
}

/* When nav has mix-blend-difference the dropdown keeps its own dark bg */
.nav .music-player__dropdown,
.nav .music-player__dropdown * {
  mix-blend-mode: normal;
}

/* Mobile: compact now-playing label */
@media (max-width: 649px) {
  .music-player__now-playing { max-width: 8rem; }
  .music-player__dropdown { right: -1rem; width: min(90vw, 320px); }
}