/* ---------- Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
h1, h2, h3, h4 { margin: 0 0 var(--space-2); font-weight: 600; line-height: 1.25; }
h1 { font-size: 28px; }
h2 { font-size: 22px; }
h3 { font-size: 17px; }
p { margin: 0 0 var(--space-3); color: var(--text-secondary); }
code, pre { font-family: var(--font-mono); }
img { max-width: 100%; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color-light);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background .15s, border-color .15s, transform .05s;
  text-align: center;
}
.btn:hover { background: var(--bg-card-hover); }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-danger:hover { filter: brightness(1.1); }
.btn-ghost { background: transparent; border-color: transparent; }
.btn-ghost:hover { background: var(--bg-card-hover); }
.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn-block { width: 100%; }
.btn-group { display: flex; gap: var(--space-2); flex-wrap: wrap; }

/* ---------- Forms ---------- */
.form-group { margin-bottom: var(--space-3); }
label { display: block; margin-bottom: var(--space-1); font-size: 13px; font-weight: 500; color: var(--text-secondary); }
.input, select.input, textarea.input {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border-color-light);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  transition: border-color .15s;
}
.input:focus, select.input:focus, textarea.input:focus {
  outline: none;
  border-color: var(--accent);
}
.input-hint { font-size: 12px; color: var(--text-muted); margin-top: var(--space-1); }
.checkbox-row { display: flex; align-items: center; gap: var(--space-2); }
.form-row { display: flex; gap: var(--space-3); flex-wrap: wrap; }
.form-row > .form-group { flex: 1; min-width: 180px; }

/* ---------- Cards ---------- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  padding: var(--space-4);
  margin-bottom: var(--space-4);
}
.card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--space-3); gap: var(--space-3); flex-wrap: wrap; }
.card-header h2, .card-header h3 { margin: 0; }

/* ---------- Stat grid ---------- */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-3); margin-bottom: var(--space-4); }
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-4);
}
.stat-card .stat-label { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--text-muted); margin-bottom: var(--space-1); }
.stat-card .stat-value { font-size: 28px; font-weight: 700; }
.stat-card .stat-sub { font-size: 12px; color: var(--text-secondary); margin-top: var(--space-1); }

/* ---------- Badges ---------- */
.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; white-space: nowrap; }
.badge-active, .badge-used, .badge-owner, .badge-info, .badge-topup { background: var(--success-soft); color: var(--success); }
.badge-unused, .badge-reseller { background: var(--info-soft); color: var(--info); }
.badge-paused, .badge-warning, .badge-spend { background: var(--warning-soft); color: var(--warning); }
.badge-banned, .badge-suspended, .badge-danger, .badge-critical { background: var(--danger-soft); color: var(--danger); }
.badge-admin { background: rgba(139, 92, 246, .16); color: var(--accent-purple); }

/* ---------- Tables ---------- */
.table-responsive { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table.table { width: 100%; border-collapse: collapse; min-width: 560px; }
table.table th, table.table td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--border-color); font-size: 14px; }
table.table th { color: var(--text-muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .03em; }
table.table tr:last-child td { border-bottom: none; }
table.table tr:hover td { background: var(--bg-card-hover); }
.empty-state { text-align: center; padding: var(--space-6) var(--space-3); color: var(--text-muted); }
.mono { font-family: var(--font-mono); font-size: 13px; }

/* ---------- Flash messages ---------- */
.flash { padding: 12px 16px; border-radius: var(--radius-sm); margin-bottom: var(--space-3); font-size: 14px; border: 1px solid transparent; }
.flash-success { background: var(--success-soft); color: var(--success); border-color: var(--success); }
.flash-error { background: var(--danger-soft); color: var(--danger); border-color: var(--danger); }
.flash-info { background: var(--info-soft); color: var(--info); border-color: var(--info); }

/* ---------- App shell / sidebar ---------- */
.app-shell { display: flex; min-height: 100vh; }
.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: 20;
  transition: transform .2s ease;
}
.sidebar-brand { display: flex; align-items: center; gap: var(--space-2); padding: var(--space-4); font-weight: 700; font-size: 18px; border-bottom: 1px solid var(--border-color); flex-shrink: 0; }
.brand-mark { width: 28px; height: 28px; border-radius: 8px; background: linear-gradient(135deg, var(--accent), var(--accent-purple)); display: flex; align-items: center; justify-content: center; font-size: 14px; color: #fff; flex-shrink: 0; }
.sidebar-nav { flex: 1; min-height: 0; padding: var(--space-3) var(--space-2); display: flex; flex-direction: column; overflow-y: auto; }
.nav-section { margin-bottom: var(--space-4); }
.nav-label { padding: 0 14px var(--space-1); font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.nav-item { display: flex; align-items: center; gap: 10px; padding: 9px 14px; border-radius: var(--radius-sm); color: var(--text-secondary); font-size: 14px; font-weight: 500; margin-bottom: 2px; }
.nav-item:hover { background: var(--bg-card-hover); color: var(--text-primary); }
.nav-item.active { background: var(--accent-soft); color: var(--accent); }
.nav-item .ni { width: 16px; height: 16px; flex-shrink: 0; opacity: .75; }
.nav-item.active .ni { opacity: 1; }
.sidebar-footer { flex-shrink: 0; padding: var(--space-3); border-top: 1px solid var(--border-color); }
.sidebar-user-email { font-size: 13px; color: var(--text-primary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; margin-bottom: 4px; }
.nav-item-logout { color: var(--danger); background: none; border: none; width: 100%; cursor: pointer; font-family: inherit; text-align: left; }
.nav-item-logout:hover { background: var(--danger-soft); color: var(--danger); }
.nav-item-logout .ni { opacity: 1; }

.sidebar-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.55); z-index: 15; }
.sidebar-overlay.open { display: block; }
.topbar-burger { display: none; background: none; border: none; cursor: pointer; color: var(--text-primary); padding: 6px; border-radius: var(--radius-sm); align-items: center; justify-content: center; flex-shrink: 0; }
.topbar-burger:hover { background: var(--bg-card-hover); }

.main { flex: 1; min-width: 0; margin-left: var(--sidebar-width); display: flex; flex-direction: column; min-height: 100vh; }
.topbar { background: var(--bg-primary); border-bottom: 1px solid var(--border-color); padding: 0 var(--space-5); height: 60px; display: flex; align-items: center; justify-content: space-between; position: sticky; top: 0; z-index: 5; gap: var(--space-3); }
.topbar-left { display: flex; align-items: center; gap: var(--space-3); min-width: 0; }
.topbar-title { font-size: 16px; font-weight: 600; color: var(--text-primary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.topbar-right { display: flex; align-items: center; gap: var(--space-3); flex-shrink: 0; }
.user-chip { background: var(--bg-card); border: 1px solid var(--border-color-light); border-radius: 999px; padding: 5px 14px; font-size: 12px; color: var(--text-secondary); white-space: nowrap; }
.user-chip b { color: var(--text-primary); }
.theme-toggle-btn { background: none; border: 1px solid var(--border-color-light); border-radius: var(--radius-sm); cursor: pointer; color: var(--text-secondary); padding: 7px; display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; }
.theme-toggle-btn:hover { border-color: var(--accent); color: var(--accent); }
.icon-sun { display: block; }
.icon-moon { display: none; }
[data-theme="light"] .icon-sun { display: none; }
[data-theme="light"] .icon-moon { display: block; }

.content { padding: var(--space-5); flex: 1; max-width: 1200px; }

/* ---------- Wizard ---------- */
.wizard-steps { display: flex; align-items: center; justify-content: center; gap: 0; margin-bottom: var(--space-5); }
.wizard-step { display: flex; align-items: center; gap: var(--space-2); color: var(--text-muted); }
.wizard-step .circle { width: 32px; height: 32px; border-radius: 50%; background: var(--bg-card); border: 2px solid var(--border-color-light); display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 13px; }
.wizard-step.done .circle { background: var(--success); border-color: var(--success); color: #fff; }
.wizard-step.active .circle { background: var(--accent); border-color: var(--accent); color: #fff; }
.wizard-step.active { color: var(--text-primary); }
.wizard-step-label { font-size: 13px; font-weight: 500; display: none; }
.wizard-line { width: 48px; height: 2px; background: var(--border-color-light); margin: 0 var(--space-2); }
.wizard-card { max-width: 620px; margin: 0 auto; }
.copy-field { display: flex; gap: var(--space-2); }
.copy-field .input { font-family: var(--font-mono); }
.code-block { background: var(--bg-input); border: 1px solid var(--border-color-light); border-radius: var(--radius-sm); padding: var(--space-3); overflow-x: auto; font-family: var(--font-mono); font-size: 13px; white-space: pre; color: var(--text-primary); }

/* ---------- FAQ accordion ---------- */
.faq-item { border: 1px solid var(--border-color); border-radius: var(--radius-md); margin-bottom: var(--space-2); background: var(--bg-card); overflow: hidden; }
.faq-item summary { padding: var(--space-3) var(--space-4); cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 20px; color: var(--text-muted); }
.faq-item[open] summary::after { content: "−"; }
.faq-item .faq-body { padding: 0 var(--space-4) var(--space-4); color: var(--text-secondary); }

/* ---------- Auth pages (login/register/landing) ---------- */
.center-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: var(--space-4); }
.auth-card { width: 100%; max-width: 400px; }
.auth-card .card { margin-bottom: 0; }
.auth-logo { display: flex; align-items: center; justify-content: center; gap: var(--space-2); font-size: 22px; font-weight: 700; margin-bottom: var(--space-5); }
.auth-footer-link { text-align: center; margin-top: var(--space-3); font-size: 14px; color: var(--text-secondary); }

/* ---------- Landing page ---------- */
.landing-nav { display: flex; align-items: center; justify-content: space-between; padding: var(--space-4) var(--space-5); max-width: 1100px; margin: 0 auto; position: relative; }
.nav-toggle { display: none; }
.landing-hero { text-align: center; padding: var(--space-6) var(--space-4); max-width: 780px; margin: 0 auto; }
.landing-hero h1 { font-size: 42px; margin-bottom: var(--space-3); }
.landing-hero .lead { font-size: 18px; color: var(--text-secondary); margin-bottom: var(--space-5); }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-3); max-width: 1000px; margin: 0 auto var(--space-6); padding: 0 var(--space-4); }
.feature-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: var(--space-4); }
.feature-card .feature-icon { width: 40px; height: 40px; border-radius: 10px; background: var(--accent-soft); color: var(--accent); display: flex; align-items: center; justify-content: center; font-size: 18px; margin-bottom: var(--space-2); }
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-3); }
.pricing-grid .card { display: flex; flex-direction: column; }
.pricing-grid .card ul { flex: 1; }

/* ---------- Utility ---------- */
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.flex { display: flex; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }

/* ---------- Responsive ---------- */
@media (min-width: 900px) {
  .wizard-step-label { display: block; }
}

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

@media (max-width: 640px) {
  .pricing-grid { grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
  .sidebar { transform: translateX(-100%); box-shadow: 4px 0 24px rgba(0,0,0,.3); }
  .sidebar.open { transform: translateX(0); }
  .main { margin-left: 0; }
  .topbar-burger { display: inline-flex; }
  .user-chip { max-width: 140px; overflow: hidden; text-overflow: ellipsis; }
}

@media (max-width: 768px) {
  .stat-grid { grid-template-columns: 1fr; }
  .content { padding: var(--space-4); }
  .topbar { padding: 0 var(--space-3); }
  .landing-hero h1 { font-size: 30px; }
  .wizard-line { width: 24px; }
}

@media (max-width: 640px) {
  .landing-nav { flex-wrap: wrap; padding: var(--space-3) var(--space-4); }
  .nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    border: 1px solid var(--border-color-light);
    color: var(--text-primary);
    font-size: 18px;
    cursor: pointer;
  }
  .landing-nav #navLinks {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    order: 3;
    margin-top: var(--space-3);
  }
  .landing-nav #navLinks.open { display: flex; }
  .landing-nav #navLinks .btn { width: 100%; }
  .landing-hero { padding: var(--space-5) var(--space-4); }
  .landing-hero h1 { font-size: 26px; }
  .landing-hero .lead { font-size: 16px; }
  .landing-hero .btn-group { flex-direction: column; align-items: stretch; }
  .landing-hero .btn-group .btn { width: 100%; }
}