/* ==========================================================================
   Elk Call Trainer — base stylesheet
   ========================================================================== */

:root {
  --bg: #161a15;
  --bg-alt: #11140f;
  --surface: #1e241c;
  --surface-hover: #262e23;
  --border: #333d2f;
  --border-strong: #48543f;
  --text: #ece7da;
  --text-muted: #a7ac9c;
  --text-faint: #737a68;
  --accent: #c9862f;
  --accent-hover: #e0982f;
  --accent-soft: rgba(201, 134, 47, 0.14);
  --accent-2: #7fa06b;
  --success: #7fa06b;
  --danger: #c9705a;
  --on-accent: #16180f;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 10px 28px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.55);

  --max-width: 1160px;
}

/* -------------------------------------------------------------------------
   Reset
   ------------------------------------------------------------------------- */

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  padding: 0;
  list-style: none;
}

h1, h2, h3, h4, p {
  margin: 0;
}

button, input, textarea, select {
  font: inherit;
  color: inherit;
}

/* -------------------------------------------------------------------------
   Layout helpers
   ------------------------------------------------------------------------- */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}

.section--tight {
  padding: 64px 0;
}

.section--alt {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

.section-head {
  max-width: 640px;
  margin: 0 auto 56px;
  text-align: center;
}

.section-head h2 {
  font-size: 2rem;
  margin-bottom: 14px;
}

.section-head p {
  color: var(--text-muted);
  font-size: 1.05rem;
}

.grid {
  display: grid;
  gap: 24px;
}

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

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

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* -------------------------------------------------------------------------
   Buttons
   ------------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}

.btn-primary {
  background: var(--accent);
  color: var(--on-accent);
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--text);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* -------------------------------------------------------------------------
   Header / Nav
   ------------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(22, 26, 21, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 1.2rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav a {
  font-size: 0.95rem;
  color: var(--text-muted);
  transition: color 0.15s ease;
}

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

.nav-cta {
  margin-left: 4px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  display: block;
}

/* -------------------------------------------------------------------------
   Hero
   ------------------------------------------------------------------------- */

.hero {
  padding: 88px 0 96px;
  background:
    radial-gradient(ellipse at top right, rgba(201, 134, 47, 0.12), transparent 55%),
    radial-gradient(ellipse at bottom left, rgba(127, 160, 107, 0.10), transparent 55%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}

.hero h1 {
  font-size: 3rem;
  line-height: 1.12;
  margin-bottom: 22px;
}

.hero h1 span {
  color: var(--accent);
}

.hero .lead {
  color: var(--text-muted);
  font-size: 1.15rem;
  max-width: 520px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 44px;
}

.hero-stats {
  display: flex;
  gap: 36px;
  flex-wrap: wrap;
}

.hero-stat .num {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--accent-2);
}

.hero-stat .label {
  color: var(--text-faint);
  font-size: 0.85rem;
}

.hero-visual {
  position: relative;
}

.spectro-window {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--shadow-lg);
}

.spectro-window .dots {
  display: flex;
  gap: 6px;
  margin-bottom: 16px;
}

.spectro-window .dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border-strong);
}

.spectro-bars {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 160px;
}

.spectro-bars span {
  flex: 1;
  border-radius: 3px 3px 0 0;
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  opacity: 0.85;
}

.spectro-caption {
  margin-top: 16px;
  font-size: 0.85rem;
  color: var(--text-faint);
  display: flex;
  justify-content: space-between;
}

/* -------------------------------------------------------------------------
   Cards
   ------------------------------------------------------------------------- */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

.card-icon {
  font-size: 1.4rem;
  color: var(--accent);
  margin-bottom: 16px;
}

.card h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
}

.card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* -------------------------------------------------------------------------
   Steps
   ------------------------------------------------------------------------- */

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.step {
  position: relative;
  padding-top: 8px;
}

.step-num {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent-soft);
  -webkit-text-stroke: 1px var(--accent);
  margin-bottom: 10px;
}

.step h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.step p {
  color: var(--text-muted);
  font-size: 0.92rem;
}

/* -------------------------------------------------------------------------
   Call library
   ------------------------------------------------------------------------- */

.call-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 22px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.call-card .call-icon {
  font-size: 1.3rem;
  color: var(--accent-2);
  line-height: 1;
}

.call-card h4 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.call-card p {
  color: var(--text-faint);
  font-size: 0.88rem;
}

.tag-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
}

.tag.tag--muted {
  background: rgba(127, 160, 107, 0.14);
  color: var(--accent-2);
}

/* -------------------------------------------------------------------------
   CTA banner
   ------------------------------------------------------------------------- */

.cta-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 44px 48px;
  flex-wrap: wrap;
}

.cta-banner h2 {
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.cta-banner p {
  color: var(--text-muted);
}

/* -------------------------------------------------------------------------
   Forms
   ------------------------------------------------------------------------- */

.alpha-form {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.alpha-form input[type="email"] {
  flex: 1;
  min-width: 220px;
  padding: 13px 16px;
  background: var(--bg);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.95rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.alpha-form input[type="email"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.form-status {
  margin-top: 16px;
  font-size: 0.9rem;
  display: none;
  width: 100%;
}

.form-status.visible {
  display: block;
}

.form-status.success {
  color: var(--success);
}

.form-status.error {
  color: var(--danger);
}

/* -------------------------------------------------------------------------
   Footer
   ------------------------------------------------------------------------- */

.site-footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 64px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  color: var(--text-faint);
  font-size: 0.9rem;
  margin-top: 14px;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  margin-bottom: 14px;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  color: var(--text-muted);
  font-size: 0.92rem;
}

.footer-col ul li a:hover {
  color: var(--accent);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  color: var(--text-faint);
  font-size: 0.85rem;
}

/* -------------------------------------------------------------------------
   Responsive
   ------------------------------------------------------------------------- */

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .grid-3, .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .nav {
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px;
    gap: 18px;
    display: none;
  }

  .nav.open {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }

  .steps {
    grid-template-columns: 1fr;
  }

  .cta-banner {
    flex-direction: column;
    align-items: flex-start;
  }
}