:root {
  --app-bg: #f2f5fb;
  --app-bg-alt: #edf2fa;
  --surface: #ffffff;
  --surface-soft: #f7faff;
  --surface-accent: #eef3ff;
  --text: #111a2f;
  --text-strong: #0a1224;
  --muted: #57627b;
  --border: #d7dfef;
  --primary: #1f4bd8;
  --primary-strong: #183db4;
  --success: #0f9f6e;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;

  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --radius-xl: 30px;

  --shadow-sm: 0 10px 24px rgba(16, 30, 61, 0.06);
  --shadow-md: 0 18px 44px rgba(16, 30, 61, 0.1);
  --shadow-lg: 0 28px 70px rgba(15, 33, 73, 0.14);

  --font-sm: 0.875rem;
  --font-md: 1rem;
  --font-lg: 1.125rem;
  --font-xl: clamp(2rem, 3.4vw, 3.25rem);

  --container-max: 1140px;
}

* { box-sizing: border-box; }

body.app-shell {
  margin: 0;
  font-family: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 12% -10%, rgba(52, 89, 230, 0.16), transparent 34%),
    radial-gradient(circle at 100% 0%, rgba(31, 75, 216, 0.1), transparent 36%),
    linear-gradient(180deg, #fbfdff 0%, var(--app-bg) 55%, var(--app-bg-alt) 100%);
  line-height: 1.6;
}

.app-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(140deg, rgba(29, 71, 198, 0.05), transparent 52%);
}

.container {
  width: min(100% - 2rem, var(--container-max));
  margin-inline: auto;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(251, 253, 255, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(215, 223, 239, 0.92);
}

.app-header-inner {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 700;
  color: var(--text-strong);
  text-decoration: none;
  letter-spacing: 0.01em;
}

.brand > span { display: grid; }
.brand strong { font-size: 1rem; line-height: 1.1; }
.brand small { font-size: 0.74rem; color: var(--muted); font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; }

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 11px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, #1e49d4, #2d61ee);
  color: #fff;
  box-shadow: 0 10px 22px rgba(33, 72, 192, 0.34);
}

.top-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid #d8e1f1;
  padding: 0.3rem;
  border-radius: 999px;
}

.top-nav a {
  color: var(--muted);
  text-decoration: none;
  padding: 0.46rem 0.86rem;
  border-radius: 999px;
  font-size: var(--font-sm);
  font-weight: 600;
}

.top-nav a:hover,
.top-nav a:focus-visible {
  color: var(--text-strong);
  background: #fff;
  box-shadow: 0 6px 16px rgba(24, 38, 70, 0.1);
  outline: none;
}

.app-main {
  position: relative;
  z-index: 1;
  padding-block: var(--space-10) var(--space-12);
  display: grid;
  gap: var(--space-8);
}

.app-footer {
  border-top: 1px solid var(--border);
  padding: var(--space-6) 0 var(--space-8);
  color: var(--muted);
  font-size: var(--font-sm);
  background: rgba(255, 255, 255, 0.55);
}

.card-surface {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--space-8);
}

h1, h2, h3, p { margin: 0 0 var(--space-4); }
h1 { font-size: var(--font-xl); line-height: 1.14; color: var(--text-strong); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.34rem, 2.2vw, 1.9rem); line-height: 1.2; color: var(--text-strong); }
h3 { font-size: 1.12rem; color: var(--text-strong); margin-bottom: var(--space-3); }
.lead { font-size: var(--font-lg); color: var(--muted); max-width: 68ch; }
.eyebrow { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.12em; color: #526389; margin-bottom: var(--space-3); font-weight: 700; }
.section-stack { display: grid; gap: var(--space-4); }
.section-head { margin-bottom: var(--space-6); }
.section-head-inline { display: flex; justify-content: space-between; gap: var(--space-4); align-items: end; }
.section-shell { padding: var(--space-8); border: 1px solid #dde5f3; border-radius: var(--radius-lg); background: rgba(255, 255, 255, 0.85); box-shadow: var(--shadow-sm); }
.section-alt { background: linear-gradient(180deg, #f9fbff 0%, #f4f8ff 100%); }

.btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 0.73rem 1.08rem;
  font-weight: 700;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: 0.2s ease;
}

.btn-primary {
  background: linear-gradient(180deg, #2b58e3 0%, #2049d1 100%);
  color: #fff;
  box-shadow: 0 14px 30px rgba(34, 70, 189, 0.3);
}

.btn-primary:hover,
.btn-primary:focus-visible { background: linear-gradient(180deg, #214bd1 0%, #173ba8 100%); outline: none; transform: translateY(-1px); }

.btn-secondary {
  background: #fff;
  border-color: #d2ddf3;
  color: var(--text-strong);
}

.btn-secondary:hover,
.btn-secondary:focus-visible { border-color: #b9c9eb; box-shadow: 0 10px 22px rgba(31, 55, 103, 0.1); outline: none; }
.btn-strong { min-height: 48px; font-size: 0.98rem; }

.hero-section { display: grid; gap: var(--space-4); padding: var(--space-10); }
.hero-premium { border-color: #ccd8f2; box-shadow: var(--shadow-lg); position: relative; overflow: hidden; }
.hero-premium::before { content: ''; position: absolute; width: 320px; height: 320px; border-radius: 50%; background: radial-gradient(circle, rgba(46, 90, 222, 0.16), transparent 70%); right: -80px; top: -110px; }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.35fr 1fr; gap: var(--space-6); align-items: center; }
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); }
.hero-panel { background: var(--surface-accent); border: 1px solid #cbd9f5; border-radius: var(--radius-md); padding: var(--space-5); }
.hero-panel-title { color: #42537c; font-weight: 700; margin-bottom: var(--space-3); }
.hero-stats { display: grid; gap: var(--space-3); margin-bottom: var(--space-4); }
.hero-stats article { background: #fff; border: 1px solid #d7e1f5; border-radius: 12px; padding: 0.72rem 0.85rem; }
.hero-stats p { color: var(--muted); margin: 0 0 0.2rem; font-size: 0.84rem; }
.hero-stats strong { font-size: 1.05rem; color: var(--text-strong); }

.feature-grid,
.pricing-grid,
.metrics-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-4); }
.feature-card { border-color: #d4def1; }
.feature-card p { color: var(--muted); margin-bottom: 0; }

.steps-list,
.benefits-list,
.feature-list { margin: 0; padding-left: 1.1rem; display: grid; gap: var(--space-2); color: var(--muted); }
.steps-list strong { color: var(--text-strong); }

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.76rem;
  border: 1px solid transparent;
  font-weight: 700;
}

.badge-success { background: #e8f8f2; color: #0c7d57; border-color: #b8e8d5; }
.badge-muted { background: #edf2fb; color: #526180; border-color: #d3dcee; }
.badge-primary { background: #eaf0ff; color: #2a49c5; border-color: #c8d6ff; }

.pricing-grid { align-items: stretch; }
.pricing-card { display: grid; gap: var(--space-4); align-content: start; min-height: 100%; }
.pricing-card.is-recommended {
  border-color: #9eb9ff;
  background: linear-gradient(180deg, #ffffff 0%, #f5f8ff 100%);
  box-shadow: 0 20px 42px rgba(29, 68, 186, 0.2);
  transform: translateY(-4px);
}
.price-line { font-size: var(--font-lg); margin-bottom: 0; color: #566282; }
.price-line span { font-size: clamp(2.1rem, 3.2vw, 2.9rem); font-weight: 800; color: var(--text-strong); letter-spacing: -0.02em; }
.plan-note { margin-top: -0.6rem; color: #657393; font-size: 0.9rem; }

.checkout-layout { display: grid; grid-template-columns: 1.35fr 1fr; gap: var(--space-5); align-items: start; }
.form-card,
.summary-card { display: grid; gap: var(--space-4); }
.summary-card { background: linear-gradient(180deg, #ffffff 0%, #f7faff 100%); }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-4); }
label { display: grid; gap: var(--space-2); color: #4b5877; font-size: var(--font-sm); font-weight: 600; }
input, textarea, select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
  color: var(--text);
  font: inherit;
  padding: 0.74rem 0.9rem;
}
input:focus-visible, textarea:focus-visible, select:focus-visible {
  border-color: #91aeff;
  outline: 3px solid rgba(63, 100, 228, 0.16);
  outline-offset: 0;
}

.summary-line { display: flex; justify-content: space-between; gap: var(--space-4); color: #53617f; margin-bottom: var(--space-3); }
.callout { background: #f2f6ff; border: 1px solid #cedafb; padding: var(--space-4); border-radius: 12px; color: #4d5c7f; }

.alert { padding: var(--space-3) var(--space-4); border-radius: 12px; font-size: var(--font-sm); border: 1px solid; }
.alert-warning { background: #fff6e6; border-color: #f1d293; color: #855000; }
.alert-success { background: #ecfaf4; border-color: #bcead4; color: #116749; }

.table-card { display: grid; gap: var(--space-4); }
.table-wrap { overflow-x: auto; border: 1px solid #dae3f4; border-radius: 14px; }
.data-table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: var(--font-sm); background: #fff; }
.data-table th, .data-table td { padding: 0.78rem 0.82rem; border-bottom: 1px solid #e4eaf6; text-align: left; }
.data-table th { color: #48567a; font-weight: 700; font-size: 0.77rem; text-transform: uppercase; letter-spacing: 0.06em; background: #f8fbff; }
.data-table tbody tr:hover { background: #f8fbff; }

.metric-card { padding: var(--space-6); }
.metric-card p { color: var(--muted); margin-bottom: var(--space-2); font-weight: 600; }
.metric-card h2 { margin: 0; font-size: clamp(1.5rem, 2.2vw, 2rem); }
.metrics-grid-admin { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.empty-state { color: var(--muted); background: #f6f9ff; border: 1px dashed #cad8f3; border-radius: var(--radius-md); padding: var(--space-6); }
.toolbar-note { color: var(--muted); font-size: var(--font-sm); font-weight: 600; background: #f7faff; border: 1px solid #d4def2; border-radius: 12px; padding: 0.5rem 0.75rem; }
.compact-cta { text-align: center; background: linear-gradient(180deg, #ffffff 0%, #f3f8ff 100%); }
.compact-cta p { color: var(--muted); }

.error-shell { min-height: 100vh; display: grid; }
.error-card { max-width: 680px; margin-inline: auto; text-align: center; margin-top: var(--space-10); }

@media (max-width: 980px) {
  .hero-grid,
  .feature-grid,
  .pricing-grid,
  .metrics-grid,
  .checkout-layout,
  .form-grid,
  .metrics-grid-admin { grid-template-columns: 1fr 1fr; }
  .section-head-inline { flex-direction: column; align-items: start; }
}

@media (max-width: 720px) {
  .hero-grid,
  .feature-grid,
  .pricing-grid,
  .metrics-grid,
  .checkout-layout,
  .form-grid,
  .metrics-grid-admin { grid-template-columns: 1fr; }
  .card-surface,
  .section-shell { padding: var(--space-6); border-radius: var(--radius-md); }
  .hero-section { padding: var(--space-8); }
  .top-nav { width: 100%; border-radius: 14px; }
}