/* JECP — Executive Minimal */
:root {
  --slate-900: #0f172a;
  --slate-800: #1e293b;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --slate-300: #cbd5e1;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-50:  #f8fafc;
  --cyan:      #06b6d4;
  --cyan-dark: #0891b2;
  --emerald:   #10b981;
  --amber:     #f59e0b;
  --red:       #ef4444;
  --bg:        #ffffff;
  --max-w:     1100px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--slate-900);
  background: var(--bg);
  margin: 0;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

a { color: var(--slate-900); }
code, pre { font-family: 'JetBrains Mono', ui-monospace, monospace; }

/* ─── Header ─── */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--slate-200);
  z-index: 50;
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.02em;
}
.logo { width: 28px; height: 28px; }
.nav-links { display: flex; gap: 28px; }
.nav-links a {
  text-decoration: none;
  font-size: 14px;
  color: var(--slate-600);
  font-weight: 500;
}
.nav-links a:hover { color: var(--slate-900); }

@media (max-width: 640px) {
  .nav-links { gap: 16px; }
  .nav-links a:nth-child(-n+3) { display: none; }
}

/* ─── Hero ─── */
.hero {
  padding: 96px 0 80px;
  background: linear-gradient(180deg, var(--slate-50) 0%, #fff 100%);
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(6, 182, 212, 0.08);
  color: var(--cyan-dark);
  font-size: 13px;
  font-weight: 500;
  border-radius: 999px;
  margin-bottom: 32px;
  border: 1px solid rgba(6, 182, 212, 0.2);
}
.dot {
  width: 6px; height: 6px;
  background: var(--emerald);
  border-radius: 50%;
  display: inline-block;
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.hero-title {
  font-size: clamp(40px, 6vw, 68px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 0 0 24px;
}
.hero-title em {
  font-style: normal;
  background: linear-gradient(180deg, var(--cyan) 0%, var(--cyan-dark) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  font-size: clamp(17px, 1.5vw, 20px);
  color: var(--slate-600);
  max-width: 700px;
  margin: 0 0 40px;
  line-height: 1.6;
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 64px;
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 32px;
  background: var(--slate-900);
  border-radius: 16px;
  color: white;
}
.stat { text-align: center; }
.stat-num {
  display: block;
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--cyan);
  font-family: 'JetBrains Mono', monospace;
}
.stat-label {
  display: block;
  font-size: 12px;
  color: var(--slate-400);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 4px;
}
@media (max-width: 640px) {
  .hero-stats { grid-template-columns: repeat(2, 1fr); padding: 24px; }
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  transition: all 0.15s ease;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn-primary {
  background: var(--slate-900);
  color: white;
}
.btn-primary:hover {
  background: var(--slate-800);
  transform: translateY(-1px);
}
.btn-secondary {
  background: white;
  color: var(--slate-900);
  border-color: var(--slate-300);
}
.btn-secondary:hover {
  border-color: var(--slate-900);
}
.btn-ghost {
  background: transparent;
  color: var(--slate-300);
  border-color: rgba(255,255,255,0.2);
}
.btn-ghost:hover {
  border-color: var(--slate-300);
  color: white;
}
.btn-lg { padding: 16px 28px; font-size: 16px; }

/* ─── Section ─── */
.section {
  padding: 96px 0;
}
.section-light {
  background: var(--slate-50);
}
.section-dark {
  background: var(--slate-900);
  color: white;
}
.section-eyebrow {
  font-size: 13px;
  font-weight: 600;
  color: var(--cyan-dark);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin: 0 0 12px;
}
.section-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 56px;
  max-width: 800px;
}
.section-title-light { color: white; }
.section-title-light + * { color: rgba(255, 255, 255, 0.85); }

/* ─── Problem grid ─── */
.problem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.problem-card {
  background: white;
  border: 1px solid var(--slate-200);
  border-radius: 12px;
  padding: 28px;
}
.problem-card h3 {
  font-size: 18px;
  margin: 0 0 12px;
  letter-spacing: -0.01em;
}
.problem-card p {
  margin: 0;
  color: var(--slate-600);
  font-size: 15px;
}

/* ─── Steps ─── */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}
.step {
  position: relative;
}
.step-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}
.step h3 {
  font-size: 22px;
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}
.step p {
  color: var(--slate-600);
  margin: 0 0 16px;
  font-size: 15px;
}
.step pre {
  background: var(--slate-900);
  color: var(--slate-100);
  padding: 16px;
  border-radius: 10px;
  overflow-x: auto;
  font-size: 12.5px;
  line-height: 1.55;
  margin: 0;
}

/* ─── Capabilities grid ─── */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.cap-card {
  background: white;
  border: 1px solid var(--slate-200);
  border-radius: 12px;
  padding: 24px;
  transition: border-color 0.15s ease;
}
.cap-card:hover {
  border-color: var(--cyan);
}
.cap-card h3 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 8px;
  color: var(--slate-900);
}
.cap-price {
  font-size: 13px;
  color: var(--cyan-dark);
  font-weight: 600;
  margin: 0 0 12px;
  font-family: 'JetBrains Mono', monospace;
}
.cap-card p:nth-of-type(2) {
  color: var(--slate-600);
  margin: 0 0 12px;
  font-size: 14px;
}
.cap-actions {
  font-size: 13px;
  color: var(--slate-500);
  margin: 0;
}
.cap-footnote {
  text-align: center;
  margin-top: 32px;
  color: var(--slate-500);
  font-size: 14px;
}
.cap-footnote a {
  font-family: 'JetBrains Mono', monospace;
  color: var(--cyan-dark);
}

/* ─── Comparison table ─── */
.comparison {
  margin-bottom: 56px;
  overflow-x: auto;
}
.comparison table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 600px;
}
.comparison th, .comparison td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--slate-200);
}
.comparison th {
  background: var(--slate-100);
  font-weight: 600;
  color: var(--slate-700);
}
.comparison td:not(:first-child),
.comparison th:not(:first-child) {
  text-align: center;
}
.comparison .hl {
  background: rgba(6, 182, 212, 0.06);
  font-weight: 700;
  color: var(--cyan-dark);
}
.comparison thead .hl {
  background: rgba(6, 182, 212, 0.15);
}

/* ─── Why grid ─── */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}
.why-card {
  padding: 28px;
  background: white;
  border: 1px solid var(--slate-200);
  border-radius: 12px;
}
.why-card h3 {
  font-size: 17px;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}
.why-card p {
  font-size: 14px;
  color: var(--slate-600);
  margin: 0;
}

/* ─── Pricing ─── */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 48px;
}
.price-card {
  background: var(--slate-800);
  border: 1px solid var(--slate-700);
  border-radius: 14px;
  padding: 32px 28px;
  position: relative;
}
.price-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--slate-300);
  margin: 0 0 8px;
}
.price-amount {
  font-size: 44px;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0 0 8px;
  color: white;
  font-family: 'JetBrains Mono', monospace;
}
.price-detail {
  color: var(--slate-400);
  margin: 0 0 24px;
  font-size: 14px;
}
.price-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 14px;
  color: var(--slate-300);
}
.price-card li {
  padding: 6px 0 6px 22px;
  position: relative;
}
.price-card li::before {
  content: '✓';
  color: var(--cyan);
  position: absolute;
  left: 0;
  font-weight: 700;
}
.price-featured {
  background: var(--bg);
  color: var(--slate-900);
  border-color: var(--cyan);
  transform: scale(1.04);
}
.price-featured h3, .price-featured .price-amount, .price-featured li { color: var(--slate-900); }
.price-featured .price-detail { color: var(--slate-600); }
.badge {
  position: absolute;
  top: -10px;
  right: 20px;
  background: var(--emerald);
  color: white;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ─── CTA section ─── */
.section-cta {
  text-align: center;
  background: linear-gradient(135deg, var(--slate-900) 0%, var(--slate-800) 100%);
  color: white;
}
.cta-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 40px;
  color: white;
}
.cta-buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
}

/* ─── Footer ─── */
.site-footer {
  background: var(--slate-900);
  color: var(--slate-400);
  padding: 56px 0 24px;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 40px;
}
.foot-col .brand {
  color: white;
  margin-bottom: 12px;
}
.foot-tag {
  color: var(--slate-500);
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
}
.foot-col h4 {
  color: white;
  font-size: 14px;
  margin: 0 0 16px;
  font-weight: 600;
}
.foot-col a {
  display: block;
  color: var(--slate-400);
  text-decoration: none;
  margin-bottom: 8px;
  font-size: 14px;
}
.foot-col a:hover {
  color: white;
}
.foot-bottom {
  border-top: 1px solid var(--slate-800);
  padding-top: 24px;
  text-align: center;
  font-size: 12px;
  color: var(--slate-500);
}
.foot-bottom a {
  color: var(--slate-300);
  font-family: 'JetBrains Mono', monospace;
}

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* ─── Sub-pages (register / topup) ─── */
.page {
  padding: 64px 0 96px;
  background: var(--slate-50);
  min-height: calc(100vh - 64px);
}
.page-narrow .container-narrow {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 24px;
}
.page-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 8px 0 12px;
}
.page-sub {
  font-size: 16px;
  color: var(--slate-600);
  margin: 0 0 40px;
  line-height: 1.6;
}

.form { display: grid; gap: 20px; }
.field { display: block; }
.field-label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--slate-900);
  margin-bottom: 6px;
}
.field input, .field select, .field textarea {
  width: 100%;
  padding: 10px 12px;
  font: inherit;
  font-size: 14px;
  color: var(--slate-900);
  background: white;
  border: 1px solid var(--slate-300);
  border-radius: 8px;
  outline: none;
  transition: border-color 0.15s;
}
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--slate-900);
}
.field-hint {
  display: block;
  font-size: 12px;
  color: var(--slate-500);
  margin-top: 6px;
}
.field-hint a { color: var(--cyan-dark); text-decoration: underline; }
.req { color: var(--red); }

.form-error {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 14px;
}

.btn-block { width: 100%; padding: 14px; }

.form-footer {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--slate-200);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
  font-size: 13px;
  color: var(--slate-600);
}
.form-footer strong { color: var(--slate-900); display: block; margin-bottom: 4px; }

/* Success view */
.alert {
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 14px;
  margin-bottom: 24px;
}
.alert-warning {
  background: #fffbeb;
  border: 1px solid #fde68a;
  color: #78350f;
}

.cred {
  margin-bottom: 16px;
}
.cred-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}
.cred-row label {
  font-size: 14px;
  font-weight: 500;
  color: var(--slate-900);
}
.cred-value {
  display: block;
  word-break: break-all;
  background: white;
  border: 1px solid var(--slate-300);
  border-radius: 8px;
  padding: 10px 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
  color: var(--slate-900);
}
.copy-btn {
  background: white;
  border: 1px solid var(--slate-300);
  color: var(--slate-700);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.1s;
}
.copy-btn:hover { border-color: var(--slate-900); color: var(--slate-900); }

.quickstart {
  margin: 32px 0;
  padding: 20px;
  background: white;
  border: 1px solid var(--slate-200);
  border-radius: 12px;
}
.quickstart-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--slate-900);
  margin: 0 0 12px;
}
.quickstart pre {
  background: var(--slate-900);
  color: var(--slate-100);
  padding: 16px;
  border-radius: 8px;
  overflow-x: auto;
  font-size: 12px;
  line-height: 1.55;
  margin: 0;
}

.cta-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin: 32px 0;
}
.cta-row .btn { padding: 12px; }

.referral-card {
  margin-top: 32px;
  padding: 20px;
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  border-radius: 12px;
}
.referral-card h3 { font-size: 15px; margin: 0 0 6px; color: #065f46; }
.referral-card p { font-size: 13px; color: #047857; margin: 0 0 14px; }
.ref-row { display: flex; align-items: center; gap: 8px; }
.ref-row .cred-value { flex: 1; font-size: 11.5px; }

.footnote { font-size: 13px; color: var(--slate-500); margin: 24px 0 0; }

/* Topup specific */
.auth-box {
  background: white;
  border: 1px solid var(--slate-200);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 32px;
}
.auth-box h2 { font-size: 16px; margin: 0 0 16px; color: var(--slate-900); }
.auth-box .field { margin-bottom: 14px; }

.amounts h2 { font-size: 16px; margin: 0 0 16px; color: var(--slate-900); }
.amounts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}
.amount-card {
  position: relative;
  text-align: left;
  padding: 24px 20px;
  border-radius: 12px;
  border: 1px solid var(--slate-300);
  background: white;
  cursor: pointer;
  transition: all 0.1s;
  font: inherit;
  color: var(--slate-900);
}
.amount-card:hover { border-color: var(--slate-900); }
.amount-card.busy { opacity: 0.6; cursor: wait; }
.amount-recommended {
  background: var(--slate-900);
  color: white;
  border-color: var(--slate-900);
}
.amount-recommended:hover { background: var(--slate-800); border-color: var(--slate-800); }
.amount-num {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-family: 'JetBrains Mono', monospace;
  margin-bottom: 4px;
}
.amount-sub { font-size: 12px; opacity: 0.7; }
.amount-card .badge {
  position: absolute;
  top: -10px;
  right: 16px;
  background: var(--emerald);
  color: white;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Minimal footer */
.site-footer-min {
  padding: 24px 0;
  background: var(--slate-100);
  color: var(--slate-500);
  font-size: 12px;
  text-align: center;
}
.site-footer-min a { color: var(--slate-700); }