/* ==========================================================================
   SAVEPOINT — Atari-Noir Theme
   Ultra-lightweight, zero-dependency, responsive styles
   ========================================================================== */

:root {
  /* Atari-Noir Palette */
  --bg: #000000;
  --surface: #0a0a0a;
  --surface-card: #111111;
  --surface-card-hover: #171717;
  --border: #1e1e1e;
  --border-focus: #333333;
  --text-primary: #F0E6DA;
  --text-muted: #999999;
  --text-dim: #666666;
  
  --atari-orange: #FC6323;
  --atari-orange-glow: rgba(252, 99, 35, 0.15);
  --npp-green: #A4C639;
  --npp-green-glow: rgba(164, 198, 57, 0.15);
  --vibe-purple: #B1A1DF;
  --vibe-purple-glow: rgba(177, 161, 223, 0.15);
  
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  
  --max-width: 1040px;
  --radius: 8px;
  --radius-sm: 4px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  background-color: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4 {
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.25;
}

h1 {
  font-size: clamp(2.2rem, 5.2vw, 3.6rem);
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  letter-spacing: -0.02em;
  margin-bottom: 0.85rem;
}

h3 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}

p {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.65;
}

a {
  color: var(--atari-orange);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: #ff7e47;
}

code, pre, .mono {
  font-family: var(--font-mono);
}

code {
  background: var(--surface-card);
  padding: 0.15rem 0.4rem;
  border-radius: var(--radius-sm);
  font-size: 0.88em;
  color: var(--atari-orange);
  border: 1px solid var(--border);
}

/* Layout Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

/* Nav */
.nav {
  border-bottom: 1px solid var(--border);
  background-color: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text-primary);
}

.nav-brand img {
  height: 28px;
  width: auto;
  display: block;
}

.nav-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
  background: rgba(252, 99, 35, 0.15);
  color: var(--atari-orange);
  border: 1px solid rgba(252, 99, 35, 0.3);
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-cta {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--border-focus);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text-primary) !important;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: border-color 0.15s ease;
}

.nav-cta:hover {
  border-color: var(--atari-orange);
}

/* Section Common */
section {
  padding: 5rem 0;
  border-bottom: 1px solid var(--border);
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--atari-orange);
  margin-bottom: 0.85rem;
  display: inline-block;
}

.section-tag.green {
  color: var(--npp-green);
}

.section-tag.purple {
  color: var(--vibe-purple);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3rem;
}

/* Hero Section */
.hero {
  padding: 4.5rem 0 3.5rem;
  text-align: center;
}

.hero-pill-wrapper {
  display: block;
  margin: 0 auto 1.5rem auto;
  text-align: center;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  background: rgba(252, 99, 35, 0.1);
  border: 1px solid rgba(252, 99, 35, 0.3);
  color: var(--atari-orange);
  line-height: 1.4;
  letter-spacing: 0.06em;
}

.hero-pill-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--atari-orange);
  box-shadow: 0 0 8px var(--atari-orange);
  flex-shrink: 0;
}

.hero-title {
  margin: 0 auto 1.5rem auto;
  max-width: 900px;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  text-align: center;
}

.hero-title-main {
  display: block;
  font-size: clamp(2.3rem, 4.8vw, 3.5rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.hero-lead {
  font-size: 1.25rem;
  max-width: 740px;
  margin: 0 auto 2.25rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

/* Install Box */
.install-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.5rem 0.6rem 0.5rem 1.25rem;
  gap: 1.25rem;
  max-width: 460px;
  width: 100%;
  margin: 0 auto 1.5rem auto;
  transition: border-color 0.15s ease;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.install-box:focus-within, .install-box:hover {
  border-color: var(--border-focus);
}

.install-cmd {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--npp-green);
  user-select: all;
  text-align: left;
}

.install-cmd .prompt {
  color: var(--text-dim);
  margin-right: 0.5rem;
  user-select: none;
}

.copy-btn {
  background-color: var(--surface-card);
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.85rem;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.15s ease;
}

.copy-btn:hover {
  background-color: var(--surface-card-hover);
  color: var(--text-primary);
  border-color: var(--border-focus);
}

.copy-btn.copied {
  color: var(--npp-green);
  border-color: var(--npp-green);
}

/* Badges row */
.value-badges {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-top: 1rem;
}

.value-badges span {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.value-badges .sep {
  color: var(--border-focus);
  font-weight: 700;
}

/* Buttons */
.btn-primary {
  background-color: var(--atari-orange);
  color: #000000 !important;
  font-weight: 700;
  padding: 0.75rem 1.6rem;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: transform 0.15s ease, background-color 0.15s ease;
}

.btn-primary:hover {
  background-color: #ff7e47;
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--surface-card);
  color: var(--text-primary) !important;
  font-weight: 600;
  padding: 0.75rem 1.6rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  font-size: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.btn-secondary:hover {
  border-color: var(--text-dim);
}

/* Terminal Window Component */
.terminal-wrapper {
  margin-top: 3.5rem;
  background-color: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.8), 0 0 1px rgba(255, 255, 255, 0.05);
  text-align: left;
}

.terminal-header {
  background-color: #0d0d0d;
  border-bottom: 1px solid var(--border);
  padding: 0.65rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.terminal-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: #222;
}

.terminal-dots span:nth-child(1) { background-color: #ff5f56; }
.terminal-dots span:nth-child(2) { background-color: #ffbd2e; }
.terminal-dots span:nth-child(3) { background-color: #27c93f; }

.terminal-title {
  color: var(--atari-orange);
  font-size: 0.85rem;
  font-weight: 600;
}

.terminal-body {
  padding: 1.25rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.55;
  background-color: #030303;
  overflow-x: auto;
}

.terminal-grid {
  display: grid;
  grid-template-columns: 180px 1fr 1fr 1fr;
  gap: 0.75rem;
  margin: 0.65rem 0;
}

.terminal-footer-status {
  text-align: center;
  font-size: 0.8rem;
  margin-top: 0.45rem;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* Terminal ANSI styles */
.t-dim { color: var(--text-dim); }
.t-muted { color: var(--text-muted); }
.t-orange { color: var(--atari-orange); font-weight: 600; }
.t-green { color: var(--npp-green); font-weight: 600; }
.t-purple { color: var(--vibe-purple); font-weight: 600; }
.t-white { color: #ffffff; font-weight: 600; }
.t-box {
  border: 1px solid #222;
  padding: 0.45rem 0.65rem;
  margin: 0.4rem 0;
  border-radius: 4px;
  background: #080808;
}
.t-box.in-progress {
  border-color: var(--atari-orange);
}

/* 4-Beat Rhythm Grid */
.rhythm-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.rhythm-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem 1.25rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.rhythm-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-focus);
}

.rhythm-number {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 0.5rem;
}

.rhythm-title {
  font-size: 1.35rem;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.rhythm-title .accent {
  color: var(--text-dim);
}

.rhythm-card:nth-child(2) .rhythm-title .accent {
  color: var(--vibe-purple);
}

.rhythm-card:nth-child(3) .rhythm-title .accent {
  color: var(--atari-orange);
}

.rhythm-card:nth-child(4) .rhythm-title .accent {
  color: var(--npp-green);
}

.rhythm-desc {
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--text-muted);
}

.loop-summary {
  text-align: center;
  margin-top: 2.5rem;
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.loop-summary p {
  font-size: 1.05rem;
  color: var(--text-primary);
}

/* Story Section */
.story-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.75rem;
  margin: 0 auto;
  max-width: 800px;
}

.story-card p {
  font-size: 1.12rem;
  margin-bottom: 1.35rem;
  color: #ccc;
  line-height: 1.7;
}

.story-card p:last-child {
  margin-bottom: 0;
}

.story-card strong {
  color: var(--text-primary);
}

.story-quote {
  border-left: 3px solid var(--atari-orange);
  padding: 1rem 1.5rem;
  margin: 0 0 2rem 0;
  background: rgba(252, 99, 35, 0.05);
  font-size: 1.25rem !important;
  color: var(--text-primary) !important;
  font-weight: 500;
  font-style: italic;
}

/* What Makes It Different */
.different-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 2rem;
}

.different-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: border-color 0.15s ease;
}

.different-card:hover {
  border-color: var(--border-focus);
}

.different-icon {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.different-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.6rem;
  color: var(--text-primary);
}

.different-card p {
  font-size: 0.96rem;
  line-height: 1.6;
}

/* Local Tooling Grid */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.tool-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
}

.tool-cmd {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--atari-orange);
  margin-bottom: 0.65rem;
}

.tool-quote {
  margin-bottom: 0.75rem;
  color: var(--text-primary);
  font-style: italic;
  font-size: 0.95rem;
}

/* Start Section */
.start-section {
  text-align: center;
}

.start-box {
  max-width: 640px;
  margin: 0 auto;
}

.start-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  max-width: 520px;
  margin: 0 auto;
}

/* FAQ */
.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.75rem;
  margin-top: 2rem;
}

.faq-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
}

.faq-card h4 {
  font-size: 1.1rem;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.faq-card p {
  font-size: 0.95rem;
  line-height: 1.6;
}

/* CTA Footer Section */
.cta-section {
  text-align: center;
  padding: 6.5rem 0 5rem;
  background: radial-gradient(circle at 50% 30%, rgba(252, 99, 35, 0.08) 0%, transparent 65%);
}

.cta-box {
  background: var(--surface);
  border: 1px solid var(--border-focus);
  border-radius: var(--radius);
  padding: 3.5rem 2rem;
  max-width: 680px;
  margin: 0 auto;
}

.cta-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 3rem 0;
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-dim);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.footer-links a {
  color: var(--text-dim);
}

.footer-links a:hover {
  color: var(--text-primary);
}

/* Responsive adjustments */
@media (max-width: 960px) {
  .terminal-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }
  .rhythm-grid {
    grid-template-columns: 1fr 1fr;
  }
  .tools-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .different-grid {
    grid-template-columns: 1fr;
  }
  .faq-grid {
    grid-template-columns: 1fr;
  }
  .story-card {
    padding: 1.75rem;
  }
  .terminal-grid {
    grid-template-columns: 1fr;
  }
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 540px) {
  .rhythm-grid {
    grid-template-columns: 1fr;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .btn-primary, .btn-secondary {
    width: 100%;
    justify-content: center;
  }
  .install-box {
    flex-direction: row;
    padding: 0.5rem 0.75rem;
  }
}