/* Quiet — modern design system (Tor-inspired, fresh layout) */
:root {
  --bg: #0a0e14;
  --bg-elevated: #0f1419;
  --bg-card: rgba(15, 20, 25, 0.82);
  --bg-card-hover: rgba(20, 26, 34, 0.9);
  --text: #e6edf3;
  --text-muted: #8b949e;
  --text-soft: #6e7681;
  --accent: #1dc7ea;
  --accent-soft: rgba(29, 199, 234, 0.14);
  --accent-glow: rgba(29, 199, 234, 0.2);
  --accent-cyan: #1dc7ea;
  --border: rgba(48, 54, 61, 0.6);
  --overload-red: #f85149;
  --overload-red-soft: rgba(248, 81, 73, 0.12);
  --radius: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --font-sans: "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --space-page: clamp(1.5rem, 4vw, 3rem);
  --max-width: 1200px;
  --max-width-narrow: 720px;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 40px var(--accent-glow);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Background: subtle gradient + grid, no heavy imagery for cleaner look */
.page-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 100% 60% at 50% -30%, rgba(29, 199, 234, 0.08) 0%, transparent 55%),
    radial-gradient(ellipse 80% 40% at 80% 60%, rgba(57, 197, 207, 0.04) 0%, transparent 50%),
    linear-gradient(180deg, var(--bg) 0%, #0d1117 50%, var(--bg) 100%);
  overflow: hidden;
}

.page-bg__strip {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  will-change: transform;
  pointer-events: none;
}

.page-bg__segment {
  width: 100%;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  flex-shrink: 0;
  opacity: 0.2;
}

.page-bg__segment--1 {
  background-image: url("/assets/bg1.jpg");
  mask-image: linear-gradient(to bottom, black 0%, black 50%, transparent 100%);
  -webkit-mask-image: linear-gradient(to bottom, black 0%, black 50%, transparent 100%);
}
.page-bg__segment--2 {
  background-image: url("/assets/bg2.jpg");
  mask-image: linear-gradient(to bottom, transparent 0%, black 25%, black 75%, transparent 100%);
  -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 25%, black 75%, transparent 100%);
}
.page-bg__segment--3 {
  background-image: url("/assets/bg3.jpg");
  mask-image: linear-gradient(to bottom, transparent 0%, black 40%, black 100%);
  -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 40%, black 100%);
}

.page-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(180deg, rgba(10, 14, 20, 0.4) 0%, transparent 30%, transparent 70%, rgba(10, 14, 20, 0.6) 100%),
    linear-gradient(rgba(29, 199, 234, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(29, 199, 234, 0.02) 1px, transparent 1px);
  background-size: 100% 100%, 80px 80px, 80px 80px;
  pointer-events: none;
}

/* Layout */
.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-page);
}

.wrap--narrow {
  max-width: var(--max-width-narrow);
}

/* Nav — minimal, Tor-style */
.site-nav {
  position: relative;
  z-index: 10;
  width: 100%;
}

.site-nav__inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1rem var(--space-page);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-nav--fixed {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(10, 14, 20, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: background 0.2s var(--ease-out);
}

.site-nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.site-nav a:hover {
  color: var(--accent);
}

.site-nav .logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text);
  font-weight: 600;
  letter-spacing: -0.03em;
}

.site-nav .logo-img {
  display: block;
  width: 36px;
  height: 36px;
  object-fit: contain;
  flex-shrink: 0;
}

.site-nav .nav-right {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.site-nav .links {
  display: flex;
  gap: 2rem;
}

#lang-select {
  font-size: 0.8125rem;
  font-family: var(--font-sans);
  color: var(--text-muted);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.4rem 0.6rem;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238b949e' d='M2.5 4.5L6 8l3.5-3.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.5rem center;
  padding-right: 1.5rem;
}

#lang-select:hover,
#lang-select:focus {
  color: var(--text);
  border-color: var(--accent);
  outline: none;
}

.page-content {
  padding: 0;
}

/* Scroll reveal */
.scroll-reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

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

.scroll-reveal.reveal-delay-1 { transition-delay: 0.08s; }
.scroll-reveal.reveal-delay-2 { transition-delay: 0.16s; }
.scroll-reveal.reveal-delay-3 { transition-delay: 0.24s; }
.scroll-reveal.reveal-delay-4 { transition-delay: 0.32s; }

.page-section {
  padding: clamp(4rem, 12vw, 8rem) 0;
  border-bottom: 1px solid transparent;
}

.page-section + .page-section {
  border-top: 1px solid var(--border);
}

#hero {
  padding-top: clamp(5rem, 14vw, 10rem);
  padding-bottom: clamp(4rem, 12vw, 7rem);
  border: none;
}

#hero + .page-section {
  border-top: none;
}

/* Hero — big statement like Tor */
.hero-inner {
  max-width: 42rem;
  margin: 0 auto;
  text-align: center;
}

.hero-inner h1 {
  font-size: clamp(2.25rem, 5.5vw, 3.75rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.12;
  color: var(--text);
}

.hero-inner h1 .accent {
  color: var(--accent);
  display: block;
  margin-top: 0.15em;
}

.hero-inner .lead {
  font-size: clamp(1.0625rem, 2vw, 1.25rem);
  color: var(--text-muted);
  margin-top: 1.5rem;
  line-height: 1.6;
  max-width: 36rem;
  margin-left: auto;
  margin-right: auto;
}

.hero-inner .mt-3 {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

/* Section labels */
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

/* Overload — split layout: text left, visual right */
.overload-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
  margin-top: 2rem;
}

.overload-content h1 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
}

.overload-content h1 .overload-word {
  color: var(--overload-red);
  font-weight: 700;
}

.overload-visual {
  width: 100%;
  aspect-ratio: 4/3;
  max-height: 320px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.overload-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 70% 50%, var(--overload-red-soft) 0%, transparent 50%),
    radial-gradient(circle at 30% 50%, var(--accent-soft) 0%, transparent 40%);
}

.overload-dots {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, var(--text-muted) 1px, transparent 1px);
  background-size: 14px 14px;
  opacity: 0.2;
}

.overload-label {
  position: absolute;
  bottom: 1rem;
  left: 1.25rem;
  font-size: 0.75rem;
  color: var(--text-soft);
}

/* Bullet list in card */
.card ul {
  list-style: none;
}

.card ul li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 0.6rem;
  color: var(--text-muted);
  font-size: 1rem;
}

.card ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--overload-red);
  opacity: 0.9;
}

/* Editor — centered flow, card style */
.editor-card {
  margin-top: 2.5rem;
  padding: clamp(2rem, 4vw, 3rem);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-card);
}

.flow {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 1rem 0;
}

.flow-item {
  padding: 0.6rem 1rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.flow-item:hover {
  border-color: var(--accent-soft);
  color: var(--text);
}

.flow-arrow {
  color: var(--accent);
  font-size: 1.25rem;
  flex-shrink: 0;
  opacity: 0.9;
}

.flow-core {
  padding: 1rem 1.5rem;
  background: var(--accent-soft);
  border: 1px solid rgba(29, 199, 234, 0.25);
  border-radius: var(--radius);
  color: var(--accent);
  font-weight: 600;
  font-size: 0.9375rem;
  text-align: center;
}

.flow-core small {
  display: block;
  font-weight: 400;
  font-size: 0.75rem;
  opacity: 0.85;
  margin-top: 0.25rem;
}

.flow-out {
  padding: 0.6rem 1rem;
  background: transparent;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 500;
}

/* Principles — 3-column grid, icon cards */
.principles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.principle {
  padding: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color 0.25s ease, background 0.25s ease, transform 0.25s var(--ease-out);
  backdrop-filter: blur(12px);
}

.principle:hover {
  border-color: var(--accent-soft);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.principle-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 1.25rem;
  background: var(--accent-soft);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  color: var(--accent);
}

.principle h3 {
  color: var(--text);
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.principle p {
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Timeline / Roadmap — vertical line + cards */
.timeline {
  margin-top: 2.5rem;
  position: relative;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 1rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--accent) 0%, var(--border) 100%);
  border-radius: 1px;
}

.stage {
  position: relative;
  padding-left: 3rem;
  padding-bottom: 2.5rem;
}

.stage:last-child {
  padding-bottom: 0;
}

.stage::before {
  content: "";
  position: absolute;
  left: 0.5rem;
  top: 0.4rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--bg), 0 0 0 5px var(--accent);
}

.stage .tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}

.stage h3 {
  color: var(--text);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  letter-spacing: -0.02em;
}

.stage > p {
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.stage-preview {
  margin-top: 1rem;
  width: 100%;
  max-width: 520px;
  height: 200px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-soft);
  font-size: 0.875rem;
}

/* Join block */
.join-block {
  max-width: 480px;
  margin-top: 2rem;
  padding: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
}

/* Typography */
h1 {
  font-size: clamp(1.875rem, 3.5vw, 2.75rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.25;
  color: var(--text);
}

h2 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.5rem;
}

p {
  color: var(--text-muted);
  font-size: 1.0625rem;
  max-width: 56ch;
}

p.lead {
  font-size: 1.15rem;
  color: var(--text);
  margin-top: 0.75rem;
  line-height: 1.6;
}

/* Cards (generic) */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  backdrop-filter: blur(12px);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.6rem;
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius);
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  cursor: pointer;
  border: none;
  font-family: inherit;
}

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

.btn--primary:hover {
  background: #2dd4f0;
  box-shadow: var(--shadow-glow);
}

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

.btn--ghost:hover {
  color: var(--accent);
  border-color: var(--accent-soft);
}

/* Footer */
.site-footer {
  padding: 3rem var(--space-page) 2rem;
  margin-top: 4rem;
  border-top: 1px solid var(--border);
  text-align: center;
}

.site-footer p,
.site-footer a {
  color: var(--text-muted);
  font-size: 0.875rem;
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--accent);
}

.site-footer .links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: 1rem;
}

.site-footer .tagline {
  font-size: 0.8125rem;
  color: var(--text-soft);
}

/* Form */
.input {
  width: 100%;
  padding: 0.9rem 1.1rem;
  font-size: 1rem;
  font-family: inherit;
  color: var(--text);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s ease;
}

.input::placeholder {
  color: var(--text-soft);
}

.input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.form-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: stretch;
}

/* Utility */
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-2 { margin-bottom: 1rem; }
.text-center { text-align: center; }

/* Mobile nav */
.nav-toggle {
  display: none;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  border-radius: var(--radius);
  transition: background 0.2s ease;
}

.nav-toggle:hover {
  background: var(--accent-soft);
}

.nav-toggle__bar {
  display: block;
  width: 20px;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.site-nav.nav-open .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.site-nav.nav-open .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}
.site-nav.nav-open .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 8;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .overload-layout {
    grid-template-columns: 1fr;
  }
  .overload-visual {
    max-height: 280px;
    order: -1;
  }
  .principles-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-backdrop {
    display: block;
  }
  .site-nav.nav-open .nav-backdrop {
    opacity: 1;
    pointer-events: auto;
  }

  .site-nav__inner {
    position: relative;
    z-index: 10;
  }

  .nav-right {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(85%, 300px);
    max-width: 300px;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    padding: 4.5rem 1.5rem 2rem;
    background: var(--bg-elevated);
    border-left: 1px solid var(--border);
    z-index: 9;
    transform: translateX(100%);
    transition: transform 0.3s var(--ease-out);
    box-shadow: -8px 0 24px rgba(0, 0, 0, 0.4);
  }

  .site-nav.nav-open .nav-right {
    transform: translateX(0);
  }

  .nav-right .links {
    flex-direction: column;
    gap: 0;
    margin-bottom: 1.5rem;
  }
  .nav-right .links a {
    display: block;
    padding: 0.75rem 0;
    font-size: 1rem;
    border-bottom: 1px solid var(--border);
  }
  .nav-right .links a:last-child {
    border-bottom: none;
  }

  .nav-right #lang-select {
    align-self: flex-start;
    padding: 0.5rem 2rem 0.5rem 0.75rem;
  }

  .site-nav .logo span {
    font-size: 0.95rem;
  }
  .site-nav .logo-img {
    width: 32px;
    height: 32px;
  }

  .wrap {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }

  #hero {
    padding-top: clamp(4rem, 10vw, 6rem);
  }

  .hero-inner {
    padding-bottom: clamp(2rem, 6vw, 3rem);
  }
  .hero-inner h1 {
    font-size: clamp(1.75rem, 5vw, 2.5rem);
  }
  .hero-inner .lead {
    font-size: 1rem;
  }
  .hero-inner .mt-3 {
    flex-direction: column;
    align-items: stretch;
    max-width: 280px;
    margin-left: auto;
    margin-right: auto;
  }
  .hero-inner .mt-3 .btn {
    width: 100%;
    justify-content: center;
  }

  .page-section {
    padding: clamp(2.5rem, 8vw, 4rem) 0;
  }

  .flow {
    flex-direction: column;
    align-items: stretch;
    padding: 1rem 0;
    gap: 0.75rem;
  }
  .flow-arrow {
    transform: rotate(90deg);
    align-self: center;
  }

  .principle {
    padding: 1.5rem;
  }

  .timeline::before {
    left: 0.4rem;
  }
  .stage {
    padding-left: 2rem;
  }
  .stage::before {
    left: 0.15rem;
    width: 12px;
    height: 12px;
  }
  .stage-preview {
    height: 160px;
    font-size: 0.8rem;
  }

  .join-block {
    padding: 1.5rem;
  }
  .join-block .form-row {
    flex-direction: column;
    align-items: stretch;
  }
  .join-block .input {
    max-width: none;
  }
  .join-block .btn {
    width: 100%;
  }

  .site-footer {
    padding: 2rem 1rem;
  }
}

@media (max-width: 480px) {
  .site-nav .logo span {
    font-size: 0.875rem;
  }
  .hero-inner h1 {
    font-size: 1.6rem;
  }
}