/* ============================================================
   Solar Specialists USA — Refined Design System v2
   Modern, conversion-focused, mobile-first
   Footer intentionally below the fold
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

/* ── Tokens ───────────────────────────────────────────────── */
:root {
  /* Brand accent — deep indigo/blue, reads as trustworthy & premium */
  --green-900: #0d1b3e;
  --green-800: #0f2356;
  --green-700: #1a3a7c;
  --green-600: #1d4ed8;
  --green-500: #2563eb;
  --green-400: #3b82f6;
  --green-100: #dbeafe;
  --green-50:  #eff6ff;

  --gold-600:  #d97706;
  --gold-500:  #f59e0b;
  --gold-400:  #fbbf24;
  --gold-100:  #fef3c7;
  --gold-50:   #fffbeb;

  --slate-900: #0f172a;
  --slate-800: #1e293b;
  --slate-700: #334155;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-50:  #f8fafc;

  --white: #ffffff;
  --error: #dc2626;
  --error-bg: #fef2f2;
  --success: #059669;
  --success-bg: #ecfdf5;

  --radius-sm:   0.375rem;
  --radius-md:   0.625rem;
  --radius-lg:   0.875rem;
  --radius-xl:   1.25rem;
  --radius-full: 9999px;

  --shadow-xs:   0 1px 2px rgba(0,0,0,0.05);
  --shadow-sm:   0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:   0 4px 16px rgba(0,0,0,0.08), 0 1px 4px rgba(0,0,0,0.04);
  --shadow-lg:   0 8px 32px rgba(0,0,0,0.10), 0 2px 8px rgba(0,0,0,0.06);
  --shadow-xl:   0 20px 60px rgba(0,0,0,0.14), 0 4px 16px rgba(0,0,0,0.06);

  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset ────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
ul   { list-style: none; }
a    { color: var(--green-400); }
input, select, button, textarea { font-family: inherit; font-size: inherit; }

/* ── Page Shell ───────────────────────────────────────────── */
/*
  Layout intent:
  - header + trustbar + main fill 100dvh exactly
  - footer lives naturally below that fold
  - user must scroll to see footer
*/
body {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--slate-900);
  background-color: #0c1526;
  background-image:
    radial-gradient(ellipse 140% 70% at 55% -15%, rgba(37,99,235,0.18) 0%, transparent 55%),
    radial-gradient(ellipse 80% 60% at -10% 90%, rgba(245,158,11,0.07) 0%, transparent 50%),
    radial-gradient(ellipse 60% 50% at 110% 60%, rgba(8,12,30,0.60) 0%, transparent 50%);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

/* ── Site Header ──────────────────────────────────────────── */
.site-header {
  flex-shrink: 0;
  padding: 0.875rem 1.25rem 0.625rem;
  text-align: center;
}

.header-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.header-logo-icon {
  width: 1.875rem;
  height: 1.875rem;
  background: linear-gradient(135deg, var(--gold-400), var(--gold-600));
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 0 3px rgba(245,158,11,0.22);
  flex-shrink: 0;
}

.header-logo-icon svg {
  width: 1rem;
  height: 1rem;
  fill: #fff;
}

.header-logo-text {
  font-size: 0.875rem;
  font-weight: 700;
  color: rgba(255,255,255,0.88);
  letter-spacing: -0.01em;
}

.site-header h1 {
  font-size: clamp(1.0625rem, 4vw, 1.375rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  letter-spacing: -0.025em;
  margin-bottom: 0.25rem;
}

.header-sub {
  font-size: 0.78125rem;
  color: rgba(255,255,255,0.55);
  max-width: 36ch;
  margin: 0 auto;
  line-height: 1.5;
}

/* ── Trust Bar ────────────────────────────────────────────── */
.trust-bar {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.2rem 1rem;
  flex-wrap: wrap;
  padding: 0.3rem 1rem 0.5rem;
}

.trust-bar-item {
  display: flex;
  align-items: center;
  gap: 0.275rem;
  font-size: 0.625rem;
  font-weight: 700;
  color: rgba(255,255,255,0.45);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  white-space: nowrap;
}

.trust-bar-item svg {
  width: 0.75rem;
  height: 0.75rem;
  flex-shrink: 0;
  opacity: 0.65;
}

.trust-bar-sep {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: rgba(255,255,255,0.18);
  flex-shrink: 0;
}

/* ── Main / Form Area ─────────────────────────────────────── */
/*
  flex: 1 makes this section fill remaining viewport height.
  The form card is centered within it.
  Footer is outside this flex child, so it is below the fold.
*/
.page-main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1rem 1rem;
  min-height: 0;
}

/* ── Form Card ────────────────────────────────────────────── */
.form {
  width: 100%;
  max-width: 440px;
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  outline: 1px solid rgba(255,255,255,0.10);
}

/* ── Progress Strip ───────────────────────────────────────── */
.progress-header {
  padding: 0.875rem 1.375rem 0.75rem;
  background: var(--slate-50);
  border-bottom: 1px solid var(--slate-200);
}

.progress-meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.4375rem;
}

.progress-label {
  font-size: 0.625rem;
  font-weight: 700;
  color: var(--slate-400);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.progress-step-count {
  font-size: 0.625rem;
  font-weight: 700;
  color: var(--green-600);
  letter-spacing: 0.02em;
}

.progress-track {
  height: 3px;
  background: var(--slate-200);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--green-500), var(--gold-500));
  border-radius: var(--radius-full);
  transition: width 0.5s var(--ease-out);
  width: 0%;
}

/* ── Form Body ────────────────────────────────────────────── */
.form-body {
  padding: 1.25rem 1.375rem 1.375rem;
}

/* ── Steps ────────────────────────────────────────────────── */
.form-step {
  display: none;
  animation: stepIn 0.25s var(--ease-out) forwards;
}

.form-step-active {
  display: block;
}

@keyframes stepIn {
  from { opacity: 0; transform: translateX(10px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ── Step Question ────────────────────────────────────────── */
.step-question {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--slate-900);
  line-height: 1.3;
  margin-bottom: 1.125rem;
  letter-spacing: -0.015em;
}

.step-question-sub {
  display: block;
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--slate-500);
  margin-top: 0.2rem;
  letter-spacing: 0;
  line-height: 1.45;
}

/* ── Input Groups ─────────────────────────────────────────── */
.input-group {
  margin-bottom: 0.875rem;
}

.input-group > label:first-child {
  display: block;
  font-size: 0.625rem;
  font-weight: 700;
  color: var(--slate-400);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.3125rem;
}

input[type="text"],
input[type="email"],
input[type="tel"],
select {
  display: block;
  width: 100%;
  padding: 0.6875rem 0.875rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--slate-900);
  background: var(--white);
  border: 1.5px solid var(--slate-200);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color 100ms, box-shadow 100ms;
  -webkit-appearance: none;
  appearance: none;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
select:focus {
  border-color: var(--green-500);
  box-shadow: 0 0 0 3px rgba(34,136,59,0.10);
}

input::placeholder { color: var(--slate-400); font-weight: 400; }

/* Custom select arrow */
select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%2394a3b8' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.875rem center;
  padding-right: 2.25rem;
  cursor: pointer;
}

/* Validation states */
.input-group.success input,
.input-group.success select { border-color: var(--success); background: var(--success-bg); }

.input-group.error input,
.input-group.error select { border-color: var(--error); background: var(--error-bg); }

.input-group .error {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  color: var(--error);
  font-size: 0.6875rem;
  font-weight: 500;
  min-height: 1rem;
  margin-top: 0.25rem;
}

/* ── Radio Card Grid ──────────────────────────────────────── */
.radio-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  margin-bottom: 1.125rem;
}

.radio-option { position: relative; }

.radio-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0; height: 0;
  pointer-events: none;
}

.radio-option-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.875rem 0.625rem;
  border: 1.5px solid var(--slate-200);
  border-radius: var(--radius-md);
  cursor: pointer;
  text-align: center;
  background: var(--white);
  min-height: 4.5rem;
  transition: border-color 100ms, background 100ms, box-shadow 100ms, transform 70ms;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.radio-option-label:hover {
  border-color: var(--green-400);
  background: var(--green-50);
}

.radio-option-label:active { transform: scale(0.96); }

.radio-option input[type="radio"]:checked + .radio-option-label {
  border-color: var(--green-500);
  background: var(--green-50);
  box-shadow: 0 0 0 3px rgba(34,136,59,0.10);
}

.radio-option-icon {
  font-size: 1.5rem;
  line-height: 1;
}

.radio-option-text {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--slate-800);
  line-height: 1.2;
}

/* ── Ownership Toggle ─────────────────────────────────────── */
.ownership-toggle {
  display: flex;
  align-items: center;
  gap: 0.5625rem;
  padding: 0.6875rem 0.875rem;
  background: var(--green-50);
  border: 1.5px solid rgba(34,136,59,0.16);
  border-radius: var(--radius-md);
  cursor: pointer;
  margin-bottom: 1.125rem;
  transition: background 100ms;
}

.ownership-toggle:hover { background: var(--green-100); }

.ownership-toggle input[type="checkbox"] {
  width: 1rem;
  height: 1rem;
  accent-color: var(--green-600);
  cursor: pointer;
  flex-shrink: 0;
  margin: 0;
}

.ownership-toggle > label:last-of-type {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--green-700);
  cursor: pointer;
  margin: 0;
  text-transform: none;
  letter-spacing: 0;
}

/* ── City/State Display ───────────────────────────────────── */
.citystate-view {
  margin-top: 0.375rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--green-600);
  min-height: 1rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.citystate-view:not(:empty)::before {
  content: '📍';
  font-size: 0.75rem;
}

/* ── Button System ────────────────────────────────────────── */
.btns-group {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.5rem;
  align-items: center;
}

.btn-solo { display: block; width: 100%; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  padding: 0.75rem 1.125rem;
  font-size: 0.875rem;
  font-weight: 700;
  line-height: 1;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  text-align: center;
  transition: background 100ms, box-shadow 100ms, transform 70ms;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  letter-spacing: -0.01em;
}

.btn:active { transform: scale(0.97); }

/* Next — solid green */
.btn-next {
  background: var(--green-600);
  color: #fff;
  box-shadow: 0 1px 3px rgba(26,107,46,0.28), 0 3px 10px rgba(26,107,46,0.16);
  width: 100%;
}

.btn-next:hover {
  background: var(--green-700);
  box-shadow: 0 2px 6px rgba(26,107,46,0.32), 0 5px 16px rgba(26,107,46,0.20);
}

/* Submit — gold gradient */
#btn-submit {
  background: linear-gradient(135deg, var(--gold-400) 0%, var(--gold-600) 100%);
  color: var(--slate-900);
  box-shadow: 0 1px 3px rgba(217,119,6,0.28), 0 3px 12px rgba(217,119,6,0.20);
  font-size: 0.9375rem;
  padding: 0.8125rem 1.125rem;
  width: 100%;
}

#btn-submit:hover {
  background: linear-gradient(135deg, var(--gold-500) 0%, #b45309 100%);
  box-shadow: 0 2px 6px rgba(217,119,6,0.32), 0 5px 18px rgba(217,119,6,0.26);
}

#btn-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* Back — ghost */
.btn-prev {
  background: transparent;
  color: var(--slate-400);
  border: 1.5px solid var(--slate-200);
  padding: 0.75rem 0.875rem;
  font-size: 0.8125rem;
  font-weight: 600;
  width: auto;
  box-shadow: none;
}

.btn-prev:hover {
  background: var(--slate-50);
  border-color: var(--slate-300);
  color: var(--slate-600);
}

/* ── Results Ready Banner ─────────────────────────────────── */
.results-ready-banner {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  padding: 0.75rem 0.875rem;
  background: linear-gradient(135deg, var(--gold-50), #fffdf5);
  border: 1.5px solid rgba(245,158,11,0.28);
  border-radius: var(--radius-md);
  margin-bottom: 1.125rem;
}

.results-ready-icon {
  font-size: 1.375rem;
  flex-shrink: 0;
  line-height: 1;
  margin-top: 0.1rem;
}

.results-ready-text strong {
  display: block;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 0.125rem;
  letter-spacing: -0.01em;
}

.results-ready-text span {
  font-size: 0.75rem;
  color: var(--slate-500);
  line-height: 1.45;
}

/* ── Name Row ─────────────────────────────────────────────── */
.name-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

/* ── Secure Badge ─────────────────────────────────────────── */
.secure-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.3125rem;
  margin-top: 0.5rem;
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--slate-400);
  letter-spacing: 0.01em;
}

.secure-badge svg {
  width: 0.75rem;
  height: 0.75rem;
  fill: var(--success);
  flex-shrink: 0;
}

/* ── TCPA ─────────────────────────────────────────────────── */
.tcpa-wrapper {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--slate-100);
}

.tcpa-copy {
  font-size: 0.625rem;
  line-height: 1.6;
  color: var(--slate-400);
  margin: 0;
}

.tcpa-copy a {
  color: var(--slate-500);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.tcpa-copy a:hover { color: var(--green-600); }

/* ── Footer — below the fold ──────────────────────────────── */
/*
  flex-shrink: 0 keeps it from collapsing.
  It sits outside .page-main (which has flex:1),
  so it naturally renders below 100dvh.
*/
footer {
  flex-shrink: 0;
  background: rgba(0,0,0,0.40);
  border-top: 1px solid rgba(255,255,255,0.05);
  color: rgba(255,255,255,0.30);
  font-size: 0.625rem;
  line-height: 1.7;
  padding: 2rem 1.5rem 2.5rem;
  text-align: center;
}

.footer-heading {
  display: block;
  font-size: 0.625rem;
  font-weight: 700;
  color: rgba(255,255,255,0.45);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
}

.terms {
  display: block;
  max-width: 600px;
  margin: 0 auto 1.125rem;
}

.footer-links {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.2rem 0.875rem;
}

.modal-button {
  background: none;
  border: none;
  padding: 0;
  color: rgba(255,255,255,0.35);
  font-size: 0.625rem;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
  cursor: pointer;
  transition: color 100ms;
}

.modal-button:hover { color: rgba(255,255,255,0.7); }

/* ── Modals ───────────────────────────────────────────────── */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0,0,0,0.65);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  padding: 1.25rem 1rem;
  overflow-y: auto;
  align-items: flex-start;
  justify-content: center;
}

.modal.modal-open { display: flex; }

.modal-content {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  width: 100%;
  max-width: 460px;
  max-height: calc(100dvh - 2.5rem);
  overflow-y: auto;
  position: relative;
  margin: auto;
  box-shadow: var(--shadow-xl);
}

.modal-content h2 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 0.75rem;
  padding-right: 2rem;
  letter-spacing: -0.01em;
}

.modal-content p {
  font-size: 0.8125rem;
  color: var(--slate-500);
  line-height: 1.65;
  margin-bottom: 0.625rem;
}

.modal-content p:last-child { margin-bottom: 0; }

.close {
  position: absolute;
  top: 0.875rem;
  right: 0.875rem;
  width: 1.75rem;
  height: 1.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--slate-100);
  border: none;
  border-radius: var(--radius-full);
  font-size: 0.9375rem;
  color: var(--slate-500);
  cursor: pointer;
  transition: background 100ms, color 100ms;
  line-height: 1;
}

.close:hover {
  background: var(--slate-200);
  color: var(--slate-900);
}

/* ── Desktop enhancements ─────────────────────────────────── */
@media (min-width: 640px) {
  .site-header {
    padding: 1.375rem 2rem 0.875rem;
  }

  .site-header h1 {
    font-size: 1.75rem;
  }

  .header-sub {
    font-size: 0.875rem;
  }

  .trust-bar {
    padding: 0.4rem 2rem 0.7rem;
    gap: 0.2rem 1.75rem;
  }

  .trust-bar-item {
    font-size: 0.6875rem;
  }

  .page-main {
    padding: 0.75rem 2rem 1.25rem;
  }

  .form-body {
    padding: 1.5rem 1.75rem 1.75rem;
  }

  .progress-header {
    padding: 1rem 1.75rem 0.875rem;
  }

  footer {
    padding: 2.25rem 3rem 3rem;
  }
}

/* ── Reduced Motion ───────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}