* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --ink: #0a2a2e;
  --ink-soft: #1a3d42;
  --paper: #faf7f2;
  --paper-warm: #f5efe5;
  --teal: #0d4f5c;
  --teal-deep: #08363f;
  --amber: #d4751c;
  --amber-bright: #e88a2e;
  --sage: #6b8e7f;
  --rule: #d9d0c1;

  --color-bg: #fafbfc;
  --color-fg: #1a1a1a;
  --color-text-secondary: #4a5568;
  --color-border: #e2e8f0;
  --color-accent: #dc2626;
  --color-accent-light: #fee2e2;
  --font-display: "Fraunces", serif;
  --font-body: "Inter Tight", system-ui, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg: #0f1117;
    --color-fg: #e6edf3;
    --color-text-secondary: #8b949e;
    --color-border: #30363d;
    --color-accent: #f85149;
    --color-accent-light: #3d2828;
  }
}

:root[data-theme="dark"] {
  --color-bg: #0f1117;
  --color-fg: #e6edf3;
  --color-text-secondary: #8b949e;
  --color-border: #30363d;
  --color-accent: #f85149;
  --color-accent-light: #3d2828;
}

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-fg);
  line-height: 1.6;
}

a { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: var(--color-fg);
  color: var(--color-bg);
  position: sticky;
  top: 0;
  z-index: 100;
  font-size: 0.95rem;
}

nav a { color: var(--color-bg); }
nav a:hover { opacity: 0.8; text-decoration: underline; }

@media (max-width: 768px) {
  nav { flex-wrap: wrap; }

}

header {
  padding: 3rem 2rem;
  text-align: center;
  background: linear-gradient(135deg, var(--color-accent-light) 0%, var(--color-bg) 100%);
}

h1 {
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  line-height: 1.2;
}

h2 {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 600;
  margin: 2rem 0 1rem;
  text-wrap: balance;
}

h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  margin: 1.5rem 0 0.75rem;
}

.subheading {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  margin-bottom: 1rem;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.rebate-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.rebate-card {
  background: var(--color-fg);
  color: var(--color-bg);
  padding: 1.5rem;
  border-radius: 0.5rem;
}

.rebate-card h3 { color: var(--color-bg); margin-top: 0; }

.rebate-amount {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent);
  margin: 1rem 0 0.5rem;
}

.rebate-detail {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  margin: 0.5rem 0;
}

.note {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  font-style: italic;
  margin-top: 0.75rem;
}

section {
  margin: 3rem 0;
  padding: 2rem;
  background: var(--color-fg);
  color: var(--color-bg);
  border-radius: 0.5rem;
}

section h2 { color: var(--color-bg); }
section h3 { color: var(--color-bg); }
section p { color: var(--color-bg); line-height: 1.7; }
section a { color: var(--color-accent-light); }

.text-section {
  background: transparent;
  color: var(--color-fg);
  padding: 1rem 0;
}

.text-section a { color: var(--color-accent); }

.example-box {
  background: var(--color-accent-light);
  padding: 1.5rem;
  border-radius: 0.5rem;
  margin: 1rem 0;
}

.example-box h4 {
  margin: 0 0 0.5rem;
  font-weight: 600;
}

.example-box p {
  margin: 0.5rem 0;
  font-size: 0.95rem;
}

.calculator {
  background: var(--color-fg);
  color: var(--color-bg);
  padding: 2rem;
  border-radius: 0.5rem;
  margin: 2rem 0;
}

.calculator input, .calculator button {
  padding: 0.75rem;
  margin: 0.5rem 0;
  border: 1px solid var(--color-border);
  border-radius: 0.25rem;
  font-size: 1rem;
}

.calculator input {
  width: 100%;
}

.calculator button {
  background: var(--color-accent);
  color: var(--color-bg);
  border: none;
  cursor: pointer;
  font-weight: 600;
  width: 100%;
}

.calculator button:hover { opacity: 0.9; }

.cta-button {
  display: inline-block;
  background: var(--color-accent);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 0.25rem;
  font-weight: 600;
  margin: 1rem 0;
  text-decoration: none;
}

.cta-button:hover { opacity: 0.9; text-decoration: none; }

footer {
  background: var(--color-fg);
  color: var(--color-bg);
  padding: 3rem 2rem;
  margin-top: 3rem;
}

footer a { color: var(--color-accent-light); }

.newsletter-form {
  max-width: 600px;
}

.newsletter-form input {
  padding: 0.75rem;
  margin: 0.5rem 0;
  border: 1px solid var(--color-border);
  border-radius: 0.25rem;
  font-size: 1rem;
  width: 100%;
}

.newsletter-form button {
  background: var(--color-accent);
  color: var(--color-bg);
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 0.25rem;
  font-weight: 600;
  cursor: pointer;
  width: 100%;
}

.newsletter-form button:hover { opacity: 0.9; }

.installer-note { background: #fff; border: 1px solid var(--rule); border-radius: 10px; padding: 16px 18px; margin: 16px 0; font-size: 13px; color: var(--ink-soft); }
.installer-note strong { color: var(--teal-deep); }
.installer-note .mini-list { list-style: none; margin: 10px 0 0; padding: 0; display: grid; gap: 8px; }
.installer-note .mini-list li { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; flex-wrap: wrap; background: var(--paper-warm); border-radius: 8px; padding: 8px 12px; }
.installer-note .mini-list a { color: var(--teal); font-weight: 600; text-decoration: none; }
.installer-note .mini-list .stars { color: var(--amber); font-weight: 700; white-space: nowrap; }
.installer-card { background: #fff; border: 1px solid var(--rule); border-radius: 12px; padding: 16px 18px; margin-bottom: 12px; display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.installer-card .name { font-weight: 700; color: var(--ink); font-size: 15px; }
.installer-card .stars { color: var(--amber); font-size: 13px; }
.installer-card .site-link { font-size: 13px; }
.program-status { display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: .03em; text-transform: uppercase; padding: 3px 9px; border-radius: 999px; margin-bottom: 8px; }
.status-open { background: #eaf3ee; color: var(--green-money, #2d6a4f); }
.status-limited { background: #fdf3e7; color: var(--amber, #d4751c); }
.status-closed { background: #fdf2f0; color: var(--red-flag, #b04545); }

/* Rebate Finder */
.finder-filters { display: flex; flex-wrap: wrap; gap: 8px; margin: 28px 0 8px; }
.finder-filter-btn { background: #fff; border: 1.5px solid var(--rule); color: var(--ink-soft); font-family: 'Inter Tight', 'Inter Tight Fallback', sans-serif; font-weight: 600; font-size: 13.5px; padding: 8px 16px; border-radius: 999px; cursor: pointer; transition: all .15s ease; }
.finder-filter-btn:hover { border-color: var(--amber); color: var(--amber); }
.finder-filter-btn.active { background: var(--teal-deep); border-color: var(--teal-deep); color: #fff; }
.finder-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; margin-top: 24px; }
.finder-card { background: #fff; border: 1px solid var(--rule); border-radius: 14px; padding: 20px; }
.finder-card .finder-cat { font-size: 11px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--amber); margin-bottom: 8px; }
.finder-card h4 { font-family: 'Inter Tight', 'Inter Tight Fallback', sans-serif; font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.finder-card .finder-amount { font-family: 'Fraunces', 'Fraunces Fallback', serif; font-size: 21px; font-weight: 700; color: var(--green-money); margin-bottom: 8px; }
.finder-card p { font-size: 13.5px; color: var(--ink-soft); margin-bottom: 8px; }
.finder-card .finder-source { font-size: 11px; color: var(--sage); font-weight: 600; text-transform: uppercase; letter-spacing: .04em; }
.finder-card.hidden { display: none; }