:root {
  --bg-dark: #020617;
  --bg-darker: #02040a;
  --bg-light: #f4f5fb;
  --accent: #22c55e;
  --accent-soft: #bbf7d0;
  --text-main: #f9fafb;
  --text-muted: #cbd5f5;
  --text-dark: #0f172a;
  --radius-lg: 1.25rem;
  --shadow-soft: 0 18px 40px rgba(15, 23, 42, 0.35);
  --transition-fast: 0.18s ease-out;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Poppins", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #020617;
  color: var(--text-dark);
}

.page-home main,
.page-drills main,
.page-tracker main,
.page-signup main {
  background: radial-gradient(circle at top, #0b1220 0, #020617 50%, #02040a 100%);
  color: var(--text-main);
  min-height: calc(100vh - 72px - 64px);
}

.section,
.hero,
.page-hero {
  padding: 3.5rem min(6vw, 4rem);
}

.section {
  max-width: 1120px;
  margin-inline: auto;
}

.section-alt {
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.9), rgba(15, 23, 42, 0.65));
  box-shadow: var(--shadow-soft);
  border-radius: var(--radius-lg);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem min(6vw, 4rem);
  background: rgba(3, 7, 18, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(148, 163, 184, 0.3);
}

.logo {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-main);
  letter-spacing: 0.06em;
}

.logo span {
  color: var(--accent);
}

.main-nav ul {
  list-style: none;
  display: flex;
  gap: 1.6rem;
  margin: 0;
  padding: 0;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.95rem;
  color: var(--text-muted);
  position: relative;
  padding-bottom: 0.2rem;
  transition: color var(--transition-fast);
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  height: 2px;
  width: 0;
  background: var(--accent);
  transition: width var(--transition-fast);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--text-main);
}

.main-nav a.active::after,
.main-nav a:hover::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle-line {
  display: block;
  width: 22px;
  height: 2px;
  margin: 4px 0;
  background: var(--text-main);
}

.hero {
  max-width: 1120px;
  margin-inline: auto;
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2.3fr);
  gap: 3rem;
  align-items: center;
}

.hero-content h1 {
  font-size: clamp(2.3rem, 4vw, 3.1rem);
  margin-bottom: 1rem;
}

.hero-content p {
  max-width: 32rem;
  color: var(--text-muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.8rem;
}

.hero-image img {
  width: 100%;
  border-radius: 1.8rem;
  object-fit: cover;
  box-shadow: var(--shadow-soft);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.4rem;
  border-radius: 999px;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  font-weight: 500;
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.btn.primary {
  background: var(--accent);
  color: #0f172a;
  box-shadow: 0 14px 30px rgba(34, 197, 94, 0.45);
}

.btn.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 40px rgba(34, 197, 94, 0.6);
}

.btn.ghost {
  background: transparent;
  border-color: rgba(148, 163, 184, 0.55);
  color: var(--text-main);
}

.btn.ghost:hover {
  background: rgba(15, 23, 42, 0.9);
}

.btn.full-width {
  width: 100%;
}

.grid {
  display: grid;
  gap: 1.8rem;
}

.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  background: rgba(15, 23, 42, 0.95);
  border-radius: var(--radius-lg);
  padding: 1.7rem 1.8rem;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(148, 163, 184, 0.4);
}

.page-hero.small {
  max-width: 1120px;
  margin-inline: auto;
}

.page-hero.small h1 {
  font-size: clamp(1.9rem, 3vw, 2.4rem);
}

.highlight-box {
  background: rgba(15, 23, 42, 0.9);
  border-radius: 1.2rem;
  padding: 1.5rem;
  border: 1px solid rgba(148, 163, 184, 0.55);
}

.gallery {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.gallery-item {
  display: none;
  width: 100%;
  max-width: 640px;
  border-radius: 1.6rem;
  object-fit: cover;
  box-shadow: var(--shadow-soft);
}

.gallery-item.active {
  display: block;
}

.gallery-controls {
  display: flex;
  gap: 0.8rem;
}

.planner-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1.7fr);
  gap: 2rem;
  max-width: 1120px;
  margin-inline: auto;
}

.planner-summary {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.planner-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
}

.metric-label {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.metric-value {
  font-size: 1.4rem;
  font-weight: 600;
}

.planner-table-wrapper {
  max-height: 260px;
  overflow: auto;
  border-radius: 0.9rem;
  border: 1px solid rgba(148, 163, 184, 0.4);
}

.planner-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.planner-table th,
.planner-table td {
  padding: 0.55rem 0.7rem;
  text-align: left;
}

.planner-table tbody tr:nth-child(odd) {
  background: rgba(15, 23, 42, 0.95);
}

.planner-table tbody tr:nth-child(even) {
  background: rgba(15, 23, 42, 0.8);
}

form label {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.85rem;
}

input,
select,
textarea {
  width: 100%;
  border-radius: 0.75rem;
  border: 1px solid rgba(148, 163, 184, 0.55);
  padding: 0.55rem 0.8rem;
  background: rgba(15, 23, 42, 0.95);
  color: var(--text-main);
  font-family: inherit;
  font-size: 0.9rem;
  margin-bottom: 0.65rem;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(34, 197, 94, 0.6);
}

textarea {
  resize: vertical;
}

.field-group {
  border-radius: 0.9rem;
  border: 1px solid rgba(148, 163, 184, 0.55);
  padding: 0.75rem 0.9rem;
  margin-bottom: 0.6rem;
}

.field-group legend {
  font-size: 0.85rem;
}

.field-group label {
  display: block;
  font-size: 0.84rem;
  margin-bottom: 0.25rem;
}

.checkbox-label {
  display: flex;
  gap: 0.5rem;
  align-items: flex-start;
  font-size: 0.85rem;
}

.checkbox-label input {
  width: auto;
  margin-top: 0.18rem;
}

.error {
  display: block;
  min-height: 1em;
  font-size: 0.8rem;
  color: #fecaca;
  margin-bottom: 0.4rem;
}

input.error-field,
select.error-field,
textarea.error-field {
  border-color: #f97373;
}

.form-success {
  font-size: 0.9rem;
  color: #bbf7d0;
  margin-top: 0.7rem;
}

.contact-grid {
  max-width: 1120px;
  margin-inline: auto;
}

.site-footer {
  padding: 1.3rem min(6vw, 4rem);
  background: #020617;
  border-top: 1px solid rgba(148, 163, 184, 0.3);
  color: var(--text-muted);
  text-align: center;
  font-size: 0.85rem;
}

@media (max-width: 880px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
  }

  .grid.two {
    grid-template-columns: minmax(0, 1fr);
  }

  .grid.three {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .planner-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .planner-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .site-header {
    padding-inline: 1rem;
  }

  .nav-toggle {
    display: block;
  }

  .main-nav {
    position: absolute;
    top: 100%;
    inset-inline: 0;
    background: rgba(3, 7, 18, 0.98);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-fast);
  }

  .main-nav.open {
    max-height: 220px;
  }

  .main-nav ul {
    flex-direction: column;
    align-items: flex-start;
    padding: 0.75rem 1rem 1rem;
    gap: 0.75rem;
  }

  .grid.three {
    grid-template-columns: minmax(0, 1fr);
  }

  .section,
  .hero,
  .page-hero {
    padding-inline: 1.1rem;
  }

  .planner-metrics {
    grid-template-columns: minmax(0, 1fr);
  }
}