/* ============================================================
   ShadowSwap — Cyberpunk Dark Theme
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Share+Tech+Mono&family=Rajdhani:wght@400;500;600;700&display=swap');

:root {
  --bg-primary:    #05050f;
  --bg-secondary:  #0d0d2b;
  --bg-card:       #111128;
  --bg-input:      #0a0a1f;
  --border:        #1e1e4a;
  --border-bright: #2e2e6a;
  --purple:        #7c3aed;
  --purple-light:  #9d5ff5;
  --cyan:          #06d6a0;
  --cyan-dark:     #04a87e;
  --red:           #ef4444;
  --yellow:        #f59e0b;
  --green:         #10b981;
  --text-primary:  #e2e8f0;
  --text-secondary:#94a3b8;
  --text-dim:      #475569;
  --glow-purple:   rgba(124, 58, 237, 0.35);
  --glow-cyan:     rgba(6, 214, 160, 0.35);
  --font-mono:     'Share Tech Mono', 'Courier New', monospace;
  --font-ui:       'Rajdhani', system-ui, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
  background-image:
    radial-gradient(ellipse at 20% 0%, rgba(124, 58, 237, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 100%, rgba(6, 214, 160, 0.06) 0%, transparent 60%);
}

/* ---- Grid background ---- */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(30, 30, 74, 0.3) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 30, 74, 0.3) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* ============================================================
   HEADER
   ============================================================ */

header {
  border-bottom: 1px solid var(--border);
  background: rgba(5, 5, 15, 0.85);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.logo {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  background: linear-gradient(90deg, var(--purple-light), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  user-select: none;
}

.logo span {
  color: var(--cyan);
  -webkit-text-fill-color: var(--cyan);
}

nav { display: flex; gap: 8px; }

.nav-btn {
  background: none;
  border: 1px solid transparent;
  color: var(--text-secondary);
  font-family: var(--font-ui);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 8px 18px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
  text-transform: uppercase;
}

.nav-btn:hover,
.nav-btn.active {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(6, 214, 160, 0.08);
}

/* ============================================================
   HERO
   ============================================================ */

.hero {
  text-align: center;
  padding: 64px 24px 48px;
}

.hero-title {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  background: linear-gradient(135deg, #fff 0%, var(--purple-light) 40%, var(--cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
  line-height: 1.15;
}

.hero-sub {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 480px;
  margin: 0 auto 12px;
}

.hero-badges {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 20px;
}

.badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 4px 12px;
  border-radius: 100px;
  border: 1px solid;
  letter-spacing: 0.08em;
}

.badge-purple { border-color: var(--purple); color: var(--purple-light); background: rgba(124,58,237,0.1); }
.badge-cyan   { border-color: var(--cyan-dark); color: var(--cyan); background: rgba(6,214,160,0.1); }
.badge-dim    { border-color: var(--border-bright); color: var(--text-secondary); background: rgba(30,30,74,0.3); }

/* ============================================================
   PAIRS TICKER
   ============================================================ */

.pairs-section {
  padding: 16px 0 40px;
}

.pairs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}

.pair-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.pair-card:hover {
  border-color: var(--border-bright);
  box-shadow: 0 0 16px rgba(124,58,237,0.12);
}

.pair-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dim);
  letter-spacing: 0.05em;
}

.pair-rate {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--cyan);
}

.pair-coins {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* ============================================================
   MAIN CARD
   ============================================================ */

.main-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 36px;
  max-width: 560px;
  margin: 0 auto 48px;
  position: relative;
  overflow: hidden;
}

.main-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--purple), var(--cyan));
}

.card-title {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 28px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.card-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ============================================================
   FORM ELEMENTS
   ============================================================ */

.form-group {
  margin-bottom: 20px;
}

label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 8px;
  font-family: var(--font-mono);
}

input, select {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 1rem;
  padding: 12px 16px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  appearance: none;
}

input:focus, select:focus {
  border-color: var(--purple);
  box-shadow: 0 0 0 3px var(--glow-purple);
}

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

select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2394a3b8' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
  cursor: pointer;
}

select option {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.input-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

/* ---- Rate estimate display ---- */
.rate-display {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--cyan);
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
}

.rate-display.loading { color: var(--text-dim); }
.rate-display.error   { color: var(--red); }

/* ---- Privacy toggle ---- */
.privacy-toggle-wrap {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 20px;
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s;
  user-select: none;
}

.privacy-toggle-wrap.active {
  border-color: var(--purple);
  box-shadow: 0 0 16px var(--glow-purple);
}

.privacy-toggle-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.privacy-toggle-label {
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.toggle-switch {
  width: 44px;
  height: 24px;
  background: var(--border-bright);
  border-radius: 100px;
  position: relative;
  transition: background 0.2s;
  flex-shrink: 0;
}

.toggle-switch::after {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  background: var(--text-dim);
  border-radius: 50%;
  top: 3px;
  left: 3px;
  transition: transform 0.2s, background 0.2s;
}

.privacy-toggle-wrap.active .toggle-switch {
  background: var(--purple);
}

.privacy-toggle-wrap.active .toggle-switch::after {
  transform: translateX(20px);
  background: #fff;
}

.privacy-info {
  display: none;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.privacy-toggle-wrap.active .privacy-info {
  display: block;
}

.privacy-info p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.privacy-info p::before { content: '›'; color: var(--purple-light); }

/* ============================================================
   BUTTONS
   ============================================================ */

.btn {
  width: 100%;
  padding: 14px 24px;
  border-radius: 10px;
  border: none;
  font-family: var(--font-ui);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
  overflow: hidden;
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-primary {
  background: linear-gradient(135deg, var(--purple), #5b21b6);
  color: #fff;
  box-shadow: 0 4px 20px var(--glow-purple);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 6px 28px var(--glow-purple);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-privacy {
  background: linear-gradient(135deg, #4c1d95, var(--purple));
  color: #fff;
  box-shadow: 0 4px 24px rgba(124, 58, 237, 0.5);
}

.btn-privacy:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 6px 32px rgba(124, 58, 237, 0.65);
}

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

.btn-secondary:hover:not(:disabled) {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* ============================================================
   STEP INDICATOR
   ============================================================ */

.steps {
  display: flex;
  align-items: center;
  margin-bottom: 28px;
  gap: 0;
}

.step {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
}

.step:not(:last-child)::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
  margin: 0 8px;
}

.step-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--border-bright);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  flex-shrink: 0;
  transition: all 0.3s;
}

.step.active .step-num {
  border-color: var(--purple);
  background: var(--glow-purple);
  color: var(--purple-light);
}

.step.done .step-num {
  border-color: var(--cyan);
  background: rgba(6, 214, 160, 0.15);
  color: var(--cyan);
}

.step-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-dim);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  white-space: nowrap;
}

.step.active .step-label { color: var(--text-secondary); }
.step.done .step-label   { color: var(--cyan); }

/* ============================================================
   DEPOSIT ADDRESS CARD
   ============================================================ */

.deposit-card {
  background: var(--bg-secondary);
  border: 1px solid var(--purple);
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 0 24px var(--glow-purple);
  margin-bottom: 20px;
}

.deposit-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.deposit-address {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--cyan);
  word-break: break-all;
  line-height: 1.5;
  margin-bottom: 12px;
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(6, 214, 160, 0.1);
  border: 1px solid var(--cyan-dark);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.05em;
}

.copy-btn:hover { background: rgba(6, 214, 160, 0.2); }
.copy-btn.copied { color: var(--green); border-color: var(--green); }

.amount-to-send {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  color: #fff;
  font-weight: 700;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.amount-to-send span { color: var(--purple-light); }

/* ============================================================
   HOP TRACKER
   ============================================================ */

.hop-tracker {
  margin-bottom: 20px;
}

.hop-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 8px;
  transition: border-color 0.3s;
}

.hop-item.active { border-color: var(--purple); }
.hop-item.done   { border-color: var(--cyan); }
.hop-item.failed { border-color: var(--red); }

.hop-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
}

.hop-info { flex: 1; }

.hop-title {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.hop-sub {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-top: 2px;
}

.hop-status {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 3px 10px;
  border-radius: 100px;
  border: 1px solid var(--border-bright);
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.hop-item.active .hop-status { border-color: var(--purple); color: var(--purple-light); }
.hop-item.done   .hop-status { border-color: var(--cyan); color: var(--cyan); }
.hop-item.failed .hop-status { border-color: var(--red); color: var(--red); }

/* ============================================================
   STATUS BADGE
   ============================================================ */

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 8px 16px;
  border-radius: 8px;
  border: 1px solid var(--border-bright);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.status-badge.waiting   { border-color: var(--yellow); color: var(--yellow); background: rgba(245,158,11,0.08); }
.status-badge.confirming,
.status-badge.verifying { border-color: var(--purple); color: var(--purple-light); background: var(--glow-purple); }
.status-badge.exchanging,
.status-badge.sending   { border-color: var(--cyan-dark); color: var(--cyan); background: rgba(6,214,160,0.08); }
.status-badge.finished  { border-color: var(--green); color: var(--green); background: rgba(16,185,129,0.08); }
.status-badge.failed    { border-color: var(--red); color: var(--red); background: rgba(239,68,68,0.08); }
.status-badge.refunded  { border-color: var(--yellow); color: var(--yellow); background: rgba(245,158,11,0.08); }

/* ============================================================
   TRACKER SECTION
   ============================================================ */

.tracker-section {
  max-width: 560px;
  margin: 0 auto 60px;
}

.tracker-result {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  margin-top: 16px;
}

.tracker-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}

.tracker-row:last-child { border-bottom: none; }

.tracker-key {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.tracker-val {
  font-family: var(--font-mono);
  color: var(--text-primary);
  text-align: right;
}

/* ============================================================
   SETUP PROGRESS
   ============================================================ */

.setup-progress {
  text-align: center;
  padding: 32px 0;
}

.spinner {
  width: 44px;
  height: 44px;
  border: 3px solid var(--border-bright);
  border-top-color: var(--purple);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
  margin: 0 auto 16px;
}

@keyframes spin { to { transform: rotate(360deg); } }

.setup-title {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--purple-light);
  margin-bottom: 8px;
}

.setup-sub {
  font-size: 0.875rem;
  color: var(--text-dim);
}

/* ============================================================
   SHADOW ID
   ============================================================ */

.shadow-id-box {
  background: rgba(124, 58, 237, 0.08);
  border: 1px solid var(--purple);
  border-radius: 8px;
  padding: 10px 16px;
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--purple-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

/* ============================================================
   ALERTS
   ============================================================ */

.alert {
  border-radius: 8px;
  padding: 12px 16px;
  font-size: 0.9rem;
  margin-bottom: 16px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.alert-warn {
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.4);
  color: var(--yellow);
}

.alert-error {
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: var(--red);
}

.alert-success {
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.4);
  color: var(--green);
}

/* ============================================================
   FOOTER
   ============================================================ */

footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.82rem;
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

/* ============================================================
   LOGO IMAGE
   ============================================================ */

.logo-img-wrap {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo-img {
  height: 38px;
  width: auto;
  object-fit: contain;
  display: block;
  filter: drop-shadow(0 0 8px var(--glow-purple));
  transition: filter 0.2s ease;
}

.logo-img:hover {
  filter: drop-shadow(0 0 14px rgba(124, 58, 237, 0.7));
}

/* ============================================================
   FAQ
   ============================================================ */

.faq-wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 12px 0 64px;
}

.faq-group {
  margin-bottom: 36px;
}

.faq-group-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
  padding-bottom: 10px;
  margin-bottom: 6px;
  border-bottom: 1px solid var(--border);
}

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

.faq-question {
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 0;
  font-family: var(--font-ui);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  text-align: left;
  transition: color 0.2s ease;
}

.faq-question:hover {
  color: var(--cyan);
}

.faq-question.open {
  color: var(--cyan);
}

.faq-arrow {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  transition: transform 0.25s ease, color 0.2s ease;
  font-style: normal;
}

.faq-question.open .faq-arrow {
  transform: rotate(180deg);
  color: var(--cyan);
}

.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.28s ease;
}

.faq-answer.open {
  grid-template-rows: 1fr;
}

.faq-answer-inner {
  overflow: hidden;
  font-family: var(--font-ui);
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  padding-bottom: 0;
  transition: padding-bottom 0.28s ease;
}

.faq-answer.open .faq-answer-inner {
  padding-bottom: 18px;
}

/* ============================================================
   PAGE SECTIONS
   ============================================================ */

.page-section { display: none; }
.page-section.active { display: block; }

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 600px) {
  .main-card { padding: 24px 18px; }
  .input-row { grid-template-columns: 1fr; }
  .pairs-grid { grid-template-columns: 1fr 1fr; }
  .steps { display: none; }
  .hero-title { font-size: 1.9rem; }
}