/* ============================================================
   RadUp.io — styles.css
   Strict monochrome dark theme
   ============================================================ */

/* ── Reset & base ─────────────────────────────────────────── */

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

:root {
  --bg: #000;
  --fg: #fff;
  --fg-muted: rgba(255, 255, 255, 0.5);
  --fg-subtle: rgba(255, 255, 255, 0.25);
  --border: rgba(255, 255, 255, 0.12);
  --border-hover: rgba(255, 255, 255, 0.35);
  --font: 'Inter', 'Helvetica Neue', Arial, system-ui, sans-serif;
  --radius: 6px;
  --section-pad: clamp(5rem, 10vw, 8rem);
  --content-max: 1100px;
  --transition: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

/* ── Star field canvas ─────────────────────────────────────── */

#starfield {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* ── Navigation ────────────────────────────────────────────── */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem clamp(1.5rem, 5vw, 3rem);
  transition: background var(--transition), border-color var(--transition);
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(0, 0, 0, 0.85);
  border-bottom-color: var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-brand {
  font-size: 1.1rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  opacity: 0.9;
  transition: opacity var(--transition);
}

.nav-brand:hover {
  opacity: 1;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--fg-muted);
  transition: color var(--transition);
  text-transform: uppercase;
}

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

/* ── Hero section ──────────────────────────────────────────── */

#hero {
  position: relative;
  z-index: 1;
  min-height: 100svh;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem clamp(1.5rem, 5vw, 3rem) 4rem;
  gap: 2rem;
}

/* Logo */
.logo-wrap {
  opacity: 0;
  animation: heroFadeUp 1.2s cubic-bezier(0.16, 1, 0.3, 1) 0.2s forwards;
}

.logo-svg {
  width: clamp(260px, 50vw, 500px);
  height: auto;
  overflow: visible;
}

.logo-text {
  animation: logoPulse 5s ease-in-out 1.5s infinite;
}

/* Tagline */
.hero-tagline {
  opacity: 0;
  max-width: 560px;
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  font-weight: 300;
  color: var(--fg-muted);
  line-height: 1.7;
  animation: heroFadeUp 1s cubic-bezier(0.16, 1, 0.3, 1) 0.7s forwards;
}

/* CTA group */
.cta-group {
  opacity: 0;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
  animation: heroFadeUp 1s cubic-bezier(0.16, 1, 0.3, 1) 1s forwards;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: 50px;
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  text-decoration: none;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--fg);
  color: var(--bg);
  border: 1px solid var(--fg);
}

.btn-primary:hover {
  background: transparent;
  color: var(--fg);
  box-shadow: 0 0 24px rgba(255, 255, 255, 0.25);
}

.btn-outline {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--border-hover);
}

.btn-outline:hover {
  border-color: var(--fg);
  box-shadow: 0 0 24px rgba(255, 255, 255, 0.15);
}

/* Scroll indicator */
.scroll-indicator {
  opacity: 0;
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  animation: heroFadeUp 1s 1.5s forwards, scrollBounce 2.5s 2.5s ease-in-out infinite;
}

.scroll-indicator span {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-subtle);
}

.scroll-arrow {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, transparent, rgba(255,255,255,0.4));
}

/* ── Section base ──────────────────────────────────────────── */

.section {
  position: relative;
  z-index: 1;
  padding: var(--section-pad) clamp(1.5rem, 5vw, 3rem);
  background: var(--bg);
}

.section-inner {
  max-width: var(--content-max);
  margin: 0 auto;
}

.section-header {
  margin-bottom: 4rem;
}

.section-label {
  display: block;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-subtle);
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 300;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.section-subtitle {
  margin-top: 1rem;
  font-size: clamp(1rem, 1.8vw, 1.1rem);
  font-weight: 300;
  color: var(--fg-muted);
  max-width: 520px;
  line-height: 1.7;
}

/* ── Our Promises ──────────────────────────────────────────── */

#promises {
  border-top: 1px solid var(--border);
}

.promises-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}

.promise-card {
  padding: 2.5rem 2rem;
  border-bottom: 1px solid var(--border);
  border-right: 1px solid var(--border);
  transition: background var(--transition);
}

.promise-card:nth-child(3n) {
  border-right: none;
}

.promise-card:nth-last-child(-n+3) {
  border-bottom: none;
}

.promise-card:hover {
  background: rgba(255, 255, 255, 0.03);
}

.promise-number {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--fg-subtle);
  margin-bottom: 1.25rem;
  font-weight: 400;
}

.promise-title {
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  margin-bottom: 0.85rem;
}

.promise-body {
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--fg-muted);
  line-height: 1.7;
}

/* ── Stake with us ─────────────────────────────────────────── */

#stake {
  border-top: 1px solid var(--border);
}

.stake-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.stake-address-block {
  margin-top: 2.5rem;
}

.stake-address-label {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-subtle);
  margin-bottom: 0.75rem;
}

.stake-address {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.03);
  flex-wrap: wrap;
}

.stake-address code {
  font-family: 'SF Mono', 'Fira Code', 'Fira Mono', monospace;
  font-size: 0.75rem;
  color: var(--fg-muted);
  letter-spacing: 0.02em;
  word-break: break-all;
  flex: 1;
}

.copy-btn {
  flex-shrink: 0;
  padding: 0.35rem 0.85rem;
  font-family: var(--font);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--border-hover);
  border-radius: 4px;
  cursor: pointer;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.copy-btn:hover {
  border-color: var(--fg);
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.15);
}

.stake-cta {
  margin-top: 2rem;
}

/* Wallet connect panel */
.wallet-panel {
  padding: 2rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.02);
}

.wallet-panel-title {
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.wallet-panel-desc {
  font-size: 0.85rem;
  color: var(--fg-muted);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

#radix-connect-container {
  margin-bottom: 1.25rem;
}

#radix-connect-container.hidden,
#stake-widget.hidden,
#wallet-prompt.hidden {
  display: none;
}

.stake-widget-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.stake-input-group {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.stake-amount-input {
  flex: 1;
  padding: 0.7rem 1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--fg);
  font-family: var(--font);
  font-size: 0.9rem;
  outline: none;
  transition: border-color var(--transition);
}

.stake-amount-input:focus {
  border-color: var(--border-hover);
}

.stake-amount-input::placeholder {
  color: var(--fg-subtle);
}

.input-suffix {
  font-size: 0.8rem;
  color: var(--fg-subtle);
  letter-spacing: 0.06em;
  font-weight: 500;
}

.wallet-note {
  font-size: 0.75rem;
  color: var(--fg-subtle);
  line-height: 1.5;
  margin-top: 0.25rem;
}

/* Divider */
.or-divider {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 1.5rem 0;
  color: var(--fg-subtle);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.or-divider::before,
.or-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ── FAQs ──────────────────────────────────────────────────── */

#faqs {
  border-top: 1px solid var(--border);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.faq-item {
  border-bottom: 1px solid var(--border);
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 1.75rem;
  background: transparent;
  border: none;
  color: var(--fg);
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: background var(--transition);
  gap: 1rem;
}

.faq-question:hover {
  background: rgba(255, 255, 255, 0.03);
}

.faq-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  position: relative;
  opacity: 0.5;
  transition: opacity var(--transition), transform var(--transition);
}

.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  background: var(--fg);
  border-radius: 1px;
  transition: transform var(--transition), opacity var(--transition);
}

.faq-icon::before {
  width: 12px;
  height: 1.5px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.faq-icon::after {
  width: 1.5px;
  height: 12px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.faq-item.open .faq-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}

.faq-item.open .faq-question {
  background: rgba(255, 255, 255, 0.03);
}

.faq-item.open .faq-icon {
  opacity: 1;
}

.faq-answer {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

.faq-item.open .faq-answer {
  max-height: 600px;
}

.faq-answer-inner {
  padding: 0 1.75rem 1.75rem;
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--fg-muted);
  line-height: 1.75;
}

.faq-answer-inner p + p {
  margin-top: 0.85rem;
}

.faq-answer-inner a {
  color: var(--fg);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: opacity var(--transition);
}

.faq-answer-inner a:hover {
  opacity: 0.7;
}

/* ── Footer ────────────────────────────────────────────────── */

footer {
  position: relative;
  z-index: 1;
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 3rem clamp(1.5rem, 5vw, 3rem) 2.5rem;
  text-align: center;
}

.footer-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.social-links {
  display: flex;
  gap: 1.75rem;
  align-items: center;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--fg-muted);
  transition: color var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.social-link:hover {
  color: var(--fg);
  border-color: var(--border-hover);
  box-shadow: 0 0 16px rgba(255, 255, 255, 0.12);
}

.social-link svg {
  width: 16px;
  height: 16px;
}

.footer-address {
  font-size: 0.72rem;
  font-family: 'SF Mono', 'Fira Code', monospace;
  color: var(--fg-subtle);
  letter-spacing: 0.04em;
}

.footer-address strong {
  display: block;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.35rem;
  font-size: 0.65rem;
  font-family: var(--font);
}

.footer-copy {
  font-size: 0.75rem;
  color: var(--fg-subtle);
}

/* ── Scroll reveal animations ──────────────────────────────── */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* ── Toast notification ─────────────────────────────────────── */

.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--fg);
  color: var(--bg);
  padding: 0.75rem 1.5rem;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  z-index: 9999;
  opacity: 0;
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
  white-space: nowrap;
}

.toast.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ── Keyframes ─────────────────────────────────────────────── */

@keyframes heroFadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes logoPulse {
  0%, 100% {
    filter: drop-shadow(0 0 6px rgba(255, 255, 255, 0.2));
  }
  50% {
    filter: drop-shadow(0 0 22px rgba(255, 255, 255, 0.55))
            drop-shadow(0 0 50px rgba(255, 255, 255, 0.18));
  }
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.4; }
  50%       { transform: translateX(-50%) translateY(8px); opacity: 0.7; }
}

/* ── Responsive ────────────────────────────────────────────── */

@media (max-width: 1024px) {
  .promises-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .promise-card:nth-child(3n) {
    border-right: 1px solid var(--border);
  }

  .promise-card:nth-child(2n) {
    border-right: none;
  }

  .promise-card:nth-last-child(-n+3) {
    border-bottom: 1px solid var(--border);
  }

  .promise-card:nth-last-child(-n+2) {
    border-bottom: none;
  }

  .stake-layout {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .promises-grid {
    grid-template-columns: 1fr;
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
  }

  .promise-card {
    border-right: none !important;
    border-bottom: 1px solid var(--border) !important;
  }

  .promise-card:last-child {
    border-bottom: none !important;
  }

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

  .btn {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .stake-address {
    flex-direction: column;
    align-items: flex-start;
  }

  .copy-btn {
    align-self: flex-end;
  }
}

/* ── Reduced motion ────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  .logo-wrap,
  .hero-tagline,
  .cta-group,
  .scroll-indicator {
    animation: none;
    opacity: 1;
    transform: none;
  }

  .logo-text {
    animation: none;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .scroll-indicator {
    animation: none;
    opacity: 0.4;
  }
}