/* ── Reset & base ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:      #06080f;
  --bg2:     #0c1120;
  --bg3:     #111827;
  --card:    #151d30;
  --border:  #1e293b;
  --text:    #f1f5f9;
  --text2:   #94a3b8;
  --text3:   #64748b;
  --purple:  #8b5cf6;
  --purple-g: rgba(139,92,246,.12);
  --blue:    #3b82f6;
  --green:   #10b981;
  --grad:    linear-gradient(135deg,#8b5cf6,#3b82f6);
}

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

a { color: var(--purple); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Layout ────────────────────────────────────────────────── */
.lg-wrap {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.lg-main {
  flex: 1;
  max-width: 780px;
  width: 100%;
  margin: 0 auto;
  padding: 32px 24px 64px;
}

/* ── Nav ───────────────────────────────────────────────────── */
.lg-nav {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 32px;
  background: rgba(6,8,15,.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.lg-nav-title {
  flex: 1;
  font-size: 13px;
  font-weight: 600;
  color: var(--text3);
  letter-spacing: .5px;
}

.lg-nav-back {
  font-size: 12px;
  font-weight: 600;
  color: var(--text3);
  text-decoration: none;
  transition: color .2s;
}
.lg-nav-back:hover { color: var(--purple); text-decoration: none; }

/* ── Hero ──────────────────────────────────────────────────── */
.lg-hero {
  text-align: center;
  padding: 40px 0 32px;
}

.lg-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 16px;
  background: var(--purple-g);
  border: 1px solid rgba(139,92,246,.2);
  border-radius: 100px;
  font-size: 11px;
  font-weight: 700;
  color: var(--purple);
  text-transform: uppercase;
  letter-spacing: 1.2px;
  margin-bottom: 16px;
}

.lg-hero-title {
  font-size: clamp(24px, 4vw, 40px);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 12px;
  background: linear-gradient(135deg,#fff,#94a3b8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.lg-hero-title span {
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.lg-hero-sub {
  color: var(--text3);
  font-size: 13px;
  max-width: 480px;
  margin: 0 auto;
}

/* ── Alert ─────────────────────────────────────────────────── */
.lg-alert {
  display: none;
  background: rgba(239,68,68,.1);
  border: 1px solid rgba(239,68,68,.3);
  border-radius: 10px;
  padding: 12px 16px;
  font-size: 13px;
  color: #fca5a5;
  margin-bottom: 16px;
  position: relative;
}

.lg-alert-close {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: #fca5a5;
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
}

/* ── Card ──────────────────────────────────────────────────── */
.lg-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
}

/* ── Form fields ───────────────────────────────────────────── */
.lg-field {
  margin-bottom: 20px;
}

.lg-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: .8px;
  margin-bottom: 8px;
}

.lg-select {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  padding: 4px 0;
  outline: none;
  transition: border-color .2s;
  cursor: pointer;
}

.lg-select:focus { border-color: var(--purple); }

.lg-select option {
  padding: 8px 14px;
  background: var(--bg3);
  color: var(--text);
}

.lg-select option:checked {
  background: var(--purple);
  color: #fff;
}

.lg-input-row {
  display: flex;
  gap: 8px;
}

.lg-input {
  flex: 1;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  padding: 10px 14px;
  outline: none;
  transition: border-color .2s;
}

.lg-input:focus { border-color: var(--purple); }
.lg-input::placeholder { color: var(--text3); }
.lg-input.is-invalid { border-color: #ef4444; }

.lg-help-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text3);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all .2s;
  white-space: nowrap;
}
.lg-help-btn:hover { border-color: var(--purple); color: var(--purple); }

/* ── Buttons ───────────────────────────────────────────────── */
.lg-actions {
  display: flex;
  gap: 10px;
  padding-top: 4px;
}

.lg-btn-primary {
  flex: 1;
  padding: 12px 24px;
  background: var(--grad);
  border: none;
  border-radius: 10px;
  color: #fff;
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: opacity .2s, transform .2s;
}
.lg-btn-primary:hover { opacity: .9; transform: translateY(-1px); }

.lg-btn-copy {
  padding: 8px 16px;
  background: transparent;
  border: 1px solid rgba(16,185,129,.3);
  border-radius: 10px;
  color: var(--green);
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s;
}
.lg-btn-copy:hover, .lg-btn-copy.copied {
  background: rgba(16,185,129,.1);
  border-color: var(--green);
}

.lg-btn-reset {
  padding: 12px 20px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text2);
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s;
}
.lg-btn-reset:hover { border-color: var(--purple); color: var(--purple); }

/* ── Loading ───────────────────────────────────────────────── */
.lg-loading { display: none; margin: 20px 0; }

.lg-progress {
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.lg-progress::after {
  content: '';
  display: block;
  height: 100%;
  width: 40%;
  background: var(--grad);
  border-radius: 2px;
  animation: lg-slide 1.2s ease-in-out infinite;
}

@keyframes lg-slide {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(350%); }
}

/* ── Result ────────────────────────────────────────────────── */
.lg-result { display: none; }

.lg-result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.lg-result-badge {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .8px;
  color: var(--green);
  background: rgba(16,185,129,.1);
  border: 1px solid rgba(16,185,129,.2);
  padding: 4px 12px;
  border-radius: 100px;
}

.lg-output {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
  color: var(--text2);
  line-height: 1.7;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

/* ── Footer ────────────────────────────────────────────────── */
.lg-footer {
  border-top: 1px solid var(--border);
  padding: 20px 32px;
  margin-top: auto;
}

.lg-footer-inner {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 12px;
  color: var(--text3);
}

.lg-footer-inner a { color: var(--text3); }
.lg-footer-inner a:hover { color: var(--text2); }

.lg-footer-ip code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  background: var(--bg3);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--border);
  color: var(--text2);
}

/* ── Modal ─────────────────────────────────────────────────── */
.lg-modal {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  color: var(--text);
}

.lg-modal-header {
  border-bottom: 1px solid var(--border);
}

.lg-modal-footer {
  border-top: 1px solid var(--border);
}

.lg-badge {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  background: var(--purple-g);
  border: 1px solid rgba(139,92,246,.2);
  color: var(--purple);
  padding: 2px 10px;
  border-radius: 6px;
}

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 600px) {
  .lg-nav  { padding: 12px 16px; }
  .lg-main { padding: 24px 16px 48px; }
  .lg-card { padding: 20px 16px; }
  .lg-hero { padding: 28px 0 24px; }
  .lg-footer { padding: 16px; }
  .lg-input-row { flex-direction: column; }
  .lg-help-btn { width: 100%; justify-content: center; }
}