/*
  Solar System Showcase Styles
  Purpose: Defines the visual system, responsive layout, planet sections, SVG containers, cursor shell, and motion states for the solar system experience.
  Contents: Design tokens, base document rules, fixed navigation, hero composition, planet statistics layouts, animated SVG styling hooks, outro content, and mobile/reduced-motion adaptations.
  System fit: Supports index.html as the presentation layer while main.js injects SVG visuals and interaction state classes.
*/

@import url("./content.css");
@import url("./responsive.css");

:root {
  --bg: #05070d;
  --bg-soft: #0c101b;
  --text: #f4f0e8;
  --muted: #a9adba;
  --line: rgba(255, 255, 255, 0.14);
  --accent: #ffb347;
  --font-display: "Syne", system-ui, sans-serif;
  --font-data: "DM Mono", Consolas, monospace;
  --font-editorial: "Cormorant Garamond", Georgia, serif;
  --nav-width: 176px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);

  /* Fluid Typography */
  --fs-xs: clamp(0.65rem, 0.8vw, 0.75rem);
  --fs-sm: clamp(0.75rem, 1vw, 0.85rem);
  --fs-base: clamp(0.95rem, 1.2vw, 1.15rem);
  --fs-lg: clamp(1.1rem, 2vw, 1.45rem);
  --fs-h2: clamp(1.8rem, 6vw, 4.2rem);
  --fs-h1: clamp(2.2rem, 11vw, 8.5rem);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  --nav-width: 176px;
  min-width: 320px;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 72% 18%, rgba(96, 126, 190, 0.18), transparent 30rem),
    radial-gradient(circle at 15% 82%, rgba(228, 119, 70, 0.12), transparent 28rem),
    var(--bg);
  font-family: var(--font-display);
  overflow-x: hidden;
  cursor: none;
}

@media (max-width: 960px) {
  body {
    --nav-width: 0px;
  }
}

p {
  margin: 0;
}

.planet-desc {
  max-width: 580px;
  margin: 0 0 2.5rem;
  color: var(--muted);
  font-size: var(--fs-lg);
  line-height: 1.6;
}

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

button,
a {
  cursor: none;
}

#starfield {
  position: fixed;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
}

.cursor {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  pointer-events: none;
  opacity: 0;
  transition: opacity 180ms ease;
}

.cursor.is-visible {
  opacity: 1;
}

.cursor-dot,
.cursor-ring {
  position: absolute;
  border-radius: 999px;
  transform: translate(-50%, -50%);
}

.cursor-dot {
  width: 7px;
  height: 7px;
  background: var(--accent);
  box-shadow: 0 0 18px var(--accent);
  transition: opacity 180ms ease;
}

.cursor-ring {
  width: 38px;
  height: 38px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  transition: width 300ms var(--ease), height 300ms var(--ease), border-color 300ms var(--ease), background 300ms var(--ease);
  display: grid;
  place-items: center;
}

.cursor-ring::after {
  content: "VIEW";
  font-family: var(--font-data);
  font-size: 0.6rem;
  font-weight: bold;
  letter-spacing: 0.15em;
  color: #fff;
  opacity: 0;
  transform: scale(0.6);
  transition: opacity 300ms var(--ease), transform 300ms var(--ease);
}

.cursor.is-hovering .cursor-ring {
  width: 76px;
  height: 76px;
  border-color: var(--accent);
  background: rgba(255, 179, 71, 0.1);
  backdrop-filter: blur(4px);
}

.cursor.is-hovering .cursor-ring::after {
  opacity: 1;
  transform: scale(1);
}

.cursor.is-hovering .cursor-dot {
  opacity: 0;
}

.cursor-planet-label {
  position: absolute;
  top: calc(50% + 44px);
  left: 50%;
  transform: translate(-50%, 0);
  font-family: var(--font-data);
  font-size: 0.7rem;
  font-weight: bold;
  letter-spacing: 0.2em;
  color: var(--accent, #fff);
  text-transform: uppercase;
  opacity: 0;
  transition: opacity 300ms var(--ease), transform 300ms var(--ease);
  white-space: nowrap;
  pointer-events: none;
}

.cursor.is-planet .cursor-planet-label {
  opacity: 1;
  transform: translate(-50%, 10px);
}

.cursor.is-planet .cursor-ring {
  border-color: var(--accent);
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 80;
  width: 100%;
  height: 3px;
  background: rgba(255, 255, 255, 0.08);
}

.scroll-progress-fill {
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, #ffb347, #63d2ff, #d4c273);
  transform-origin: left center;
}

.nav {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 70;
  width: var(--nav-width);
  padding: 2.5rem 1.2rem;
  border-right: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(5, 7, 13, 0.94), rgba(5, 7, 13, 0.6));
  backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 400ms var(--ease);
}

.nav-logo {
  display: grid;
  gap: 2px;
}

.nav-logo-sol {
  font-size: 24px;
  font-weight: 800;
}

.nav-logo-sub,
.nav-link,
.nav-hint-text,
.planet-classification,
.hero-eyebrow,
.outro-eyebrow,
.scroll-cue-label {
  font-family: var(--font-data);
  letter-spacing: 0;
}

.nav-logo-sub {
  color: var(--muted);
  font-size: 10px;
}

.nav-planets {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.nav-link {
  display: block;
  padding: 8px 0;
  color: var(--muted);
  font-size: 11px;
  transition: color 180ms ease, transform 180ms ease;
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--text);
  transform: translateX(4px);
}

.nav-hint {
  display: grid;
  gap: 10px;
  color: var(--muted);
  font-size: 10px;
}

.nav-hint-arrow {
  width: 1px;
  height: 56px;
  background: linear-gradient(var(--line), transparent);
}

.section {
  position: relative;
  min-height: 100svh;
  padding: 96px 7vw 96px calc(var(--nav-width) + 7vw);
}

.hero-section {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(360px, 1.1fr);
  align-items: center;
  gap: 44px;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-eyebrow,
.planet-classification,
.outro-eyebrow {
  color: var(--accent);
  font-size: 12px;
}

.hero-title,
.outro-title {
  margin: 1rem 0 1.5rem;
  font-size: var(--fs-h1);
  line-height: 0.83;
  letter-spacing: -0.02em;
}

.hero-title-line {
  display: block;
}

.hero-title-em,
.outro-title em {
  color: #d8e8ff;
  font-family: var(--font-editorial);
  font-weight: 300;
}

.hero-subtitle,
.planet-desc,
.outro-desc,
.belt-desc,
.voyager-text {
  max-width: 680px;
  color: var(--muted);
  font-size: clamp(17px, 1.6vw, 22px);
  line-height: 1.55;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  margin-top: 34px;
}

.hero-stat {
  display: grid;
  gap: 4px;
}

.hero-stat-value {
  font: 400 28px/1 var(--font-data);
}

.hero-stat-label,
.ps-label,
.ps-unit,
.od-label,
.od-value {
  color: var(--muted);
  font: 400 11px/1.35 var(--font-data);
}

.hero-orrery {
  min-height: min(74vw, 720px);
  display: grid;
  place-items: center;
}

.scroll-cue {
  position: absolute;
  right: 4vw;
  bottom: 32px;
  display: grid;
  justify-items: center;
  gap: 10px;
  color: var(--muted);
}

.scroll-cue-line {
  position: relative;
  width: 1px;
  height: 64px;
  background: var(--line);
}

.scroll-cue-dot {
  position: absolute;
  left: -3px;
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--accent);
  animation: cue 1.7s var(--ease) infinite;
}

.planet-section {
  display: grid;
  align-items: center;
}

.section-bg-glow {
  position: absolute;
  inset: 16% 6% 14% auto;
  width: min(58vw, 780px);
  border-radius: 999px;
  background: radial-gradient(circle, color-mix(in srgb, var(--section-accent, #ffb347) 18%, transparent), transparent 66%);
  filter: blur(32px);
  opacity: 0.9;
}

.planet-section-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(300px, 1fr) minmax(340px, 1.2fr);
  align-items: center;
  gap: 4rem;
}

@media (max-width: 1024px) {
  .section {
    padding: 5rem 1.5rem 8rem !important;
  }

  .hero-section, .planet-section-inner {
    grid-template-columns: 1fr !important;
    text-align: center;
    gap: 3rem;
  }

  .planet-section:nth-of-type(even) .planet-section-inner {
    grid-template-columns: 1fr !important;
  }

  .planet-section:nth-of-type(even) .planet-info-col {
    order: unset;
  }

  .planet-stats {
    justify-content: center;
  }
  
  .planet-visual-col {
    order: -1;
  }
}

.planet-section:nth-of-type(even) .planet-info-col {
  order: 2;
}

.planet-number {
  margin-top: 18px;
  color: rgba(255, 255, 255, 0.16);
  font: 400 clamp(48px, 9vw, 132px)/0.8 var(--font-data);
}

.planet-name {
  margin: 0 0 1.25rem;
  font-size: var(--fs-h1);
  line-height: 0.85;
  letter-spacing: -0.02em;
  max-width: 100%;
  overflow-wrap: break-word;
}

.planet-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  max-width: 640px;
  padding: 1px;
  margin: 34px 0 0;
  background: var(--line);
}

.ps-row {
  min-height: 72px;
  padding: 16px;
  background: rgba(5, 7, 13, 0.78);
}

.ps-value {
  margin: 7px 0 0;
  font: 400 clamp(18px, 2vw, 26px)/1.1 var(--font-data);
}

.planet-visual-col {
  min-height: min(72vw, 620px);
  display: grid;
  place-items: center;
  transform-style: preserve-3d;
}

.planet-svg,
.orrery-svg {
  width: min(100%, 720px);
  height: auto;
  overflow: visible;
  filter: drop-shadow(0 22px 50px rgba(0, 0, 0, 0.45));
}

.planet-disc,
.planet-band,
.planet-feature,
.ring-shape,
.orbit-planet {
  transform-box: fill-box;
  transform-origin: center;
}

.reveal-item {
  opacity: 0;
  transform: translateY(26px);
}

@keyframes cue {
  0% {
    transform: translateY(0);
    opacity: 0;
  }
  35%,
  70% {
    opacity: 1;
  }
  100% {
    transform: translateY(58px);
    opacity: 0;
  }
}

/* ═══════════════════════════════════════════
   DEEP-DIVE SIDE DRAWER STYLES
════════════════════════════════════════════ */
.drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(4, 4, 6, 0.72);
  backdrop-filter: blur(8px);
  z-index: 990;
  opacity: 0;
  visibility: hidden;
  transition: opacity 400ms ease, visibility 400ms ease;
}

.drawer-backdrop.is-active {
  opacity: 1;
  visibility: visible;
}

.side-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: min(88vw, 460px);
  height: 100vh;
  background: rgba(12, 12, 15, 0.88);
  backdrop-filter: blur(28px);
  border-left: 1px solid rgba(255, 255, 255, 0.08);
  z-index: 1000;
  box-shadow: -30px 0 70px rgba(0, 0, 0, 0.85);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  overflow-y: auto;
  overscroll-behavior: contain;
}

@media (max-width: 600px) {
  .side-drawer {
    width: 100%;
  }
}

@media (pointer: coarse) {
  body, button, a {
    cursor: auto !important;
  }
  .cursor {
    display: none !important;
  }
}

.drawer-header {
  padding: 36px 36px 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  position: relative;
}

.drawer-subtitle {
  font-family: "DM Mono", monospace;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--accent, #a8a8a8);
  margin-bottom: 6px;
}

.drawer-title {
  font-family: "Syne", sans-serif;
  font-size: 2.2rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1.1;
}

.drawer-close {
  position: absolute;
  top: 28px;
  right: 28px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #ffffff;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background 200ms ease, transform 200ms ease;
}

.drawer-close:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: scale(1.08);
}

.drawer-content {
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.drawer-section-title {
  font-family: "DM Mono", monospace;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: 16px;
  border-left: 2px solid var(--accent, #fff);
  padding-left: 8px;
}

/* Layer Stack */
.drawer-layers {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.layer-bar-container {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.layer-meta {
  display: flex;
  justify-content: space-between;
  font-family: "DM Mono", monospace;
  font-size: 0.8rem;
}

.layer-name {
  color: #ffffff;
}

.layer-pct {
  color: var(--accent, #a8a8a8);
}

.layer-track {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 999px;
  overflow: hidden;
}

.layer-fill {
  height: 100%;
  background: var(--accent, #fff);
  border-radius: 999px;
  width: 0%;
}

.layer-desc {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.4;
  margin-top: 2px;
}

/* Controls */
.toggle-control {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  user-select: none;
}

.toggle-control input {
  display: none;
}

.toggle-slider {
  width: 40px;
  height: 22px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  position: relative;
  transition: background 300ms ease;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.toggle-slider::before {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  background: #ffffff;
  border-radius: 50%;
  transition: transform 300ms cubic-bezier(0.16, 1, 0.3, 1);
}

.toggle-control input:checked ~ .toggle-slider {
  background: var(--accent, #4fa3e0);
}

.toggle-control input:checked ~ .toggle-slider::before {
  transform: translateX(18px);
}

.toggle-label {
  font-family: "DM Mono", monospace;
  font-size: 0.85rem;
  color: #ffffff;
}

/* Scientific Report */
.drawer-desc {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.6;
}

/* Missions */
.drawer-missions {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.drawer-missions li {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.75);
  padding-left: 14px;
  position: relative;
}

.drawer-missions li::before {
  content: "›";
  position: absolute;
  left: 0;
  top: -1px;
  color: var(--accent, #fff);
  font-weight: bold;
}

/* ═══════════════════════════════════════════
   CONTEXTUAL TOOLTIP
════════════════════════════════════════════ */
.stat-tooltip {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 2000;
  background: rgba(14, 14, 18, 0.92);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 10px 16px;
  border-radius: 8px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.6);
  opacity: 0;
  transform: translate(-50%, 10px);
  max-width: 240px;
}

.tooltip-content {
  font-family: "DM Mono", monospace;
  font-size: 0.78rem;
  line-height: 1.4;
  color: #e0e0e0;
  text-align: center;
}