/* ============================================================
   East Texas Sun Screens — styles.css
   Mobile-first · Texas sun aesthetic
   Palette: terracotta, amber, warm cream, deep charcoal
   ============================================================ */

/* ── CUSTOM PROPERTIES ── */
:root {
  /* Colors */
  --clr-sun:        #e8890c;
  --clr-terra:      #b94a1a;
  --clr-terra-dark: #8c3410;
  --clr-amber:      #f5b942;
  --clr-cream:      #fdf6ec;
  --clr-paper:      #fff9f2;
  --clr-charcoal:   #1c1a17;
  --clr-muted:      #6b5e4e;
  --clr-rule:       #e8d9c5;

  /* Gradients */
  --grad-hero: radial-gradient(ellipse 120% 80% at 60% 20%, #e22d00 0%, #e8890c 30%, #b94a1a 65%, #3d1a06 100%);
  --grad-stat: linear-gradient(135deg, #b94a1a 0%, #8c3410 100%);
  --grad-calc: linear-gradient(160deg, #fdf6ec 0%, #fef3e2 100%);

  /* Typography */
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body:    'DM Sans', system-ui, sans-serif;

  /* Spacing scale */
  --space-2:   0.125rem;
  --space-4:   0.25rem;
  --space-8:   0.5rem;
  --space-12:  0.75rem;
  --space-16:  1rem;
  --space-20:  1.25rem;
  --space-24:  1.5rem;
  --space-32:  2rem;
  --space-40:  2.5rem;
  --space-48:  3rem;
  --space-64:  4rem;
  --space-80:  5rem;
  --space-96:  6rem;
  --space-120: 7.5rem;

  /* Layout */
  --container-max: 1200px;
  --container-pad: var(--space-20);

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 10px;
  --radius-lg: 20px;
  --radius-xl: 32px;

  /* Shadows */
  --shadow-card: 0 4px 24px rgba(28,26,23,.10), 0 1px 4px rgba(28,26,23,.06);
  --shadow-lift: 0 12px 40px rgba(28,26,23,.16), 0 2px 8px rgba(28,26,23,.08);

  /* Transition */
  --ease: cubic-bezier(.16,1,.3,1);
  --dur:  240ms;
}

/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  background: var(--clr-paper);
  color: var(--clr-charcoal);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img, video, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; font-family: inherit; }
input, textarea, select, button { font: inherit; }
:focus-visible { outline: 3px solid var(--clr-sun); outline-offset: 3px; border-radius: var(--radius-sm); }

/* ── LAYOUT ── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* ── TYPOGRAPHY HELPERS ── */
.eyebrow {
  font-family: var(--font-body);
  font-size: .72rem;
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--clr-sun);
  margin-bottom: var(--space-8);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-48);
}
.section-header h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 900;
  line-height: 1.15;
  color: var(--clr-charcoal);
}
.section-header--light h2 { color: #fff; }
.section-header--light .eyebrow { color: var(--clr-amber); }
.section-sub {
  margin-top: var(--space-12);
  color: var(--clr-muted);
  font-size: 1rem;
  max-width: 540px;
  margin-inline: auto;
}

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
  padding: var(--space-16) var(--space-32);
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: .95rem;
  border: 2px solid transparent;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
              transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  white-space: nowrap;
}
.btn-primary {
  background: var(--clr-terra);
  color: #fff;
  border-color: var(--clr-terra);
}
.btn-primary:hover, .btn-primary:focus-visible {
  background: var(--clr-terra-dark);
  border-color: var(--clr-terra-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(185,74,26,.35);
}
.btn-ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,.5);
}
.btn-ghost:hover, .btn-ghost:focus-visible {
  background: rgba(255,255,255,.12);
  border-color: #fff;
}
.btn-full { width: 100%; justify-content: center; }
.btn:active { transform: translateY(0); }

/* ── HEADER ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(253,246,236,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--clr-rule);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--clr-charcoal);
  flex-shrink: 0;
}
.logo em { color: var(--clr-terra); font-style: italic;}
.logo-mark {
  font-size: 1.4rem;
  color: var(--clr-sun);
  line-height: 1;
}
.primary-nav { display: none; }
.primary-nav ul { display: flex; align-items: center; gap: var(--space-32); }
.primary-nav a {
  font-size: .9rem;
  font-weight: 500;
  color: var(--clr-muted);
  transition: color var(--dur);
}
.primary-nav a:hover { color: var(--clr-terra); }
.nav-cta {
  background: var(--clr-terra);
  color: #fff !important;
  padding: var(--space-8) var(--space-20);
  border-radius: var(--radius-md);
}
.nav-cta:hover { background: var(--clr-terra-dark) !important; }

/* Menu toggle */
.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  padding: 8px;
}
.menu-toggle span {
  display: block;
  height: 2px;
  background: var(--clr-charcoal);
  border-radius: 2px;
  transition: transform var(--dur) var(--ease), opacity var(--dur);
}
.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav */
.mobile-nav {
  background: var(--clr-cream);
  border-top: 1px solid var(--clr-rule);
  padding: var(--space-16) var(--space-20);
}
.mobile-nav ul { display: flex; flex-direction: column; gap: var(--space-4); }
.mobile-nav a {
  display: block;
  padding: var(--space-12) var(--space-8);
  font-weight: 500;
  color: var(--clr-charcoal);
  border-radius: var(--radius-sm);
  transition: background var(--dur);
}
.mobile-nav a:hover { background: var(--clr-rule); }

/* ── HERO ── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: #1a0800;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: var(--grad-hero);
}
.sun-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.08);
  top: 50%;
  right: -10%;
  transform: translate(0, -50%);
  animation: pulse-ring 6s ease-in-out infinite;
}
.sun-ring-1 { width: 280px; height: 280px; animation-delay: 0s; }
.sun-ring-2 { width: 480px; height: 480px; animation-delay: .8s; }
.sun-ring-3 { width: 680px; height: 680px; animation-delay: 1.6s; }

@keyframes pulse-ring {
  0%, 100% { opacity: .08; transform: translate(0, -50%) scale(1); }
  50%       { opacity: .18; transform: translate(0, -50%) scale(1.03); }
}

.heat-lines {
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 48px,
    rgba(255,255,255,.018) 48px,
    rgba(255,255,255,.018) 49px
  );
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  padding-top: var(--space-80);
  padding-bottom: var(--space-80);
  animation: hero-in .9s var(--ease) both;
}
@keyframes hero-in {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero .eyebrow { color: var(--clr-amber); }

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 8vw, 5.5rem);
  font-weight: 900;
  line-height: 1.05;
  color: #fff;
  margin-bottom: var(--space-24);
}
.hero h1 em {
  font-style: italic;
  color: var(--clr-amber);
  display: block;
}

.hero-sub {
  color: rgba(255,255,255,.82);
  font-size: clamp(.95rem, 2vw, 1.15rem);
  max-width: 520px;
  margin-bottom: var(--space-40);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-16);
  margin-bottom: var(--space-40);
}

.trust-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-12);
  font-size: .85rem;
  color: rgba(255,255,255,.65);
}
.trust-strip .divider { opacity: .4; }

/* ── STAT BAR ── */
.stat-bar {
  background: var(--grad-stat);
  padding: var(--space-40) 0;
}
.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-24);
}
.stat { text-align: center; }
.stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 900;
  color: #fff;
  line-height: 1;
}
.stat-label {
  display: block;
  font-size: .78rem;
  font-weight: 500;
  color: rgba(255,255,255,.7);
  letter-spacing: .04em;
  margin-top: var(--space-4);
}

/* ── CALCULATOR ── */
.calculator-section {
  background: var(--grad-calc);
  padding: var(--space-96) 0;
}

.calc-layout {
  display: grid;
  gap: var(--space-48);
}

/* Inputs */
.calc-inputs { display: flex; flex-direction: column; gap: var(--space-32); }

.input-group label {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  font-weight: 500;
  font-size: .9rem;
  margin-bottom: var(--space-12);
  color: var(--clr-charcoal);
}
.input-value {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--clr-terra);
}

/* Range slider */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: linear-gradient(to right, var(--clr-terra) var(--pct, 30%), var(--clr-rule) var(--pct, 30%));
  border-radius: 99px;
  outline: none;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  background: var(--clr-terra);
  border: 3px solid #fff;
  border-radius: 50%;
  box-shadow: 0 2px 8px rgba(185,74,26,.4);
  transition: transform var(--dur) var(--ease);
}
input[type="range"]::-moz-range-thumb {
  width: 22px;
  height: 22px;
  background: var(--clr-terra);
  border: 3px solid #fff;
  border-radius: 50%;
  box-shadow: 0 2px 8px rgba(185,74,26,.4);
  cursor: pointer;
}
input[type="range"]:focus-visible::-webkit-slider-thumb { transform: scale(1.25); }

.range-hints {
  display: flex;
  justify-content: space-between;
  font-size: .72rem;
  color: var(--clr-muted);
  margin-top: var(--space-4);
}

/* Assumptions */
.input-group--select label {
  display: block;
  font-weight: 500;
  font-size: .9rem;
  margin-bottom: var(--space-8);
  color: var(--clr-charcoal);
}
.select-wrapper {
  position: relative;
}
.select-wrapper select {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  padding: var(--space-14, 0.875rem) var(--space-40) var(--space-14, 0.875rem) var(--space-16);
  border: 1.5px solid var(--clr-rule);
  border-radius: var(--radius-md);
  background: #fff;
  font-size: .92rem;
  color: var(--clr-charcoal);
  cursor: pointer;
  transition: border-color var(--dur), box-shadow var(--dur);
}
.select-wrapper select:focus {
  outline: none;
  border-color: var(--clr-terra);
  box-shadow: 0 0 0 3px rgba(185,74,26,.12);
}
.select-arrow {
  position: absolute;
  right: var(--space-16);
  top: 50%;
  transform: translateY(-50%);
  color: var(--clr-terra);
  font-size: .85rem;
  pointer-events: none;
}
.input-hint {
  margin-top: var(--space-8);
  font-size: .75rem;
  color: var(--clr-muted);
  line-height: 1.5;
}

/* Savings Cards */
.savings-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-12);
  margin-bottom: var(--space-24);
}
.savings-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: var(--space-20) var(--space-16);
  text-align: center;
  box-shadow: var(--shadow-card);
  border-top: 4px solid var(--clr-rule);
  transition: border-color var(--dur), box-shadow var(--dur);
}
.card-monthly  { border-color: var(--clr-sun); }
.card-annual   { border-color: var(--clr-terra); }
.card-five     { border-color: var(--clr-terra-dark); }

.card-label {
  display: block;
  font-size: .7rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--clr-muted);
  margin-bottom: var(--space-4);
}
.card-amount {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 4vw, 2rem);
  font-weight: 900;
  color: var(--clr-charcoal);
  line-height: 1;
  margin-bottom: var(--space-4);
  transition: transform .3s var(--ease);
}
.card-sub {
  font-size: .72rem;
  color: var(--clr-muted);
}

/* Chart */
.chart-wrapper {
  background: #fff;
  border-radius: var(--radius-md);
  padding: var(--space-20);
  box-shadow: var(--shadow-card);
  margin-bottom: var(--space-16);
  position: relative;
  height: 220px;
}
.chart-wrapper canvas { width: 100% !important; height: 100% !important; }

.calc-disclaimer {
  font-size: .75rem;
  color: var(--clr-muted);
  text-align: center;
  margin-bottom: var(--space-24);
  line-height: 1.5;
}

/* ── BENEFITS ── */
.benefits-section {
  padding: var(--space-96) 0;
  background: var(--clr-paper);
}
.benefits-grid {
  display: grid;
  gap: var(--space-24);
}
.benefit-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: var(--space-32) var(--space-24);
  box-shadow: var(--shadow-card);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.benefit-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
}
.benefit-icon {
  font-size: 2rem;
  margin-bottom: var(--space-16);
  line-height: 1;
}
.benefit-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: var(--space-8);
  color: var(--clr-charcoal);
}
.benefit-card p {
  font-size: .9rem;
  color: var(--clr-muted);
  line-height: 1.65;
}

/* ── TESTIMONIALS ── */
.testimonials-section {
  background: var(--clr-charcoal);
  padding: var(--space-96) 0;
}
.testimonials-grid {
  display: grid;
  gap: var(--space-24);
}
.testimonial {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-lg);
  padding: var(--space-32) var(--space-24);
}
.featured-testimonial {
  background: rgba(185,74,26,.18);
  border-color: rgba(232,137,12,.3);
}
.testimonial blockquote {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.05rem;
  line-height: 1.7;
  color: rgba(255,255,255,.88);
  margin-bottom: var(--space-20);
}
.testimonial footer {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.testimonial footer strong {
  color: #fff;
  font-size: .9rem;
}
.testimonial footer span {
  color: rgba(255,255,255,.5);
  font-size: .8rem;
}
.stars { color: var(--clr-amber) !important; font-size: .9rem !important; }

/* ── CONTACT ── */
.contact-section {
  background: var(--clr-cream);
  padding: var(--space-96) 0;
}
.contact-layout { display: grid; gap: var(--space-48); }

.contact-copy h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 900;
  margin-bottom: var(--space-16);
}
.contact-copy p {
  color: var(--clr-muted);
  line-height: 1.7;
  margin-bottom: var(--space-24);
}
.contact-promises {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}
.contact-promises li {
  font-size: .9rem;
  color: var(--clr-terra);
  font-weight: 500;
}

/* Lead form */
.lead-form {
  background: #fff;
  border-radius: var(--radius-xl);
  padding: var(--space-40) var(--space-32);
  box-shadow: var(--shadow-lift);
  display: flex;
  flex-direction: column;
  gap: var(--space-20);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
}
.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}
.form-field label {
  font-size: .85rem;
  font-weight: 500;
  color: var(--clr-charcoal);
}
.form-field label span { color: var(--clr-terra); }
.form-field input,
.form-field textarea {
  padding: var(--space-12) var(--space-16);
  border: 1.5px solid var(--clr-rule);
  border-radius: var(--radius-md);
  font-size: .95rem;
  background: var(--clr-paper);
  color: var(--clr-charcoal);
  transition: border-color var(--dur), box-shadow var(--dur);
  width: 100%;
}
.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--clr-terra);
  box-shadow: 0 0 0 3px rgba(185,74,26,.12);
}
.form-field input.invalid { border-color: #d63a2c; }
.field-error {
  font-size: .75rem;
  color: #d63a2c;
  display: none;
}
.field-error:not(:empty) { display: block; }
.form-field textarea { resize: vertical; min-height: 80px; }

.btn-submit { margin-top: var(--space-8); font-size: 1rem; padding: var(--space-20); }

.form-privacy {
  text-align: center;
  font-size: .75rem;
  color: var(--clr-muted);
}
.form-success {
  background: #e8f5e9;
  border: 1px solid #a5d6a7;
  border-radius: var(--radius-md);
  padding: var(--space-16);
  text-align: center;
  color: #2e7d32;
  font-size: .9rem;
}

/* ── FOOTER ── */
.site-footer {
  background: var(--clr-charcoal);
  padding: var(--space-64) 0 0;
  color: rgba(255,255,255,.6);
  font-size: .85rem;
}
.footer-inner {
  display: grid;
  gap: var(--space-40);
  margin-bottom: var(--space-48);
}
.footer-brand .logo { margin-bottom: var(--space-12); color: #fff; }
.footer-brand p { color: rgba(255,255,255,.5); }
.footer-nav ul { display: flex; flex-direction: column; gap: var(--space-8); }
.footer-nav a { color: rgba(255,255,255,.6); transition: color var(--dur); }
.footer-nav a:hover { color: var(--clr-amber); }
.footer-contact { font-style: normal; line-height: 1.9; }
.footer-contact a { color: rgba(255,255,255,.7); transition: color var(--dur); }
.footer-contact a:hover { color: var(--clr-amber); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: var(--space-24) 0;
}
.footer-bottom .container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-8);
  font-size: .78rem;
}

/* ── SCROLL REVEAL ANIMATION ── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── TABLET (≥640px) ── */
@media (min-width: 640px) {
  :root { --container-pad: var(--space-32); }

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

  .benefits-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

/* ── DESKTOP (≥960px) ── */
@media (min-width: 960px) {
  :root { --container-pad: var(--space-40); }

  .primary-nav { display: flex; }
  .menu-toggle { display: none; }

  .hero { min-height: 100svh; }
  .hero-content { max-width: 620px; }

  .calc-layout { grid-template-columns: 400px 1fr; gap: var(--space-64); align-items: start; }
  .calc-results { position: sticky; top: 80px; }
  .chart-wrapper { height: 260px; }

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

  .contact-layout { grid-template-columns: 1fr 1fr; align-items: start; }

  .footer-inner { grid-template-columns: 2fr 1fr 1fr; }
}

/* ── LARGE (≥1200px) ── */
@media (min-width: 1200px) {
  .savings-cards { gap: var(--space-16); }
}

/* ── REDUCED MOTION ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
}