/* ==========================================================================
   Aqua Expert RO Water Purifier Services — stylesheet
   Aesthetic: deep-water ink + glossy teal/copper glass, tilted 3D cards
   ========================================================================== */

@import url("https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,400;0,9..144,600;0,9..144,700;1,9..144,500&family=Manrope:wght@400;500;600;700;800&display=swap");

:root {
  --ink: #071a1f;
  --ink-2: #0d2a31;
  --ink-3: #123640;
  --paper: #f5f1e6;
  --paper-dim: #d9d3c2;
  --teal: #2f8f86;
  --teal-bright: #57cabd;
  --teal-deep: #1c5a54;
  --copper: #c1793f;
  --copper-light: #e7a869;
  --line: rgba(245, 241, 230, 0.14);
  --line-strong: rgba(245, 241, 230, 0.26);
  --shadow-lg: 0 40px 80px -30px rgba(3, 12, 14, 0.65);
  --shadow-md: 0 20px 40px -18px rgba(3, 12, 14, 0.5);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --wrap: 1220px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: "Manrope", -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.nav-open {
  overflow: hidden;
}

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

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

h1, h2, h3, h4 {
  font-family: "Fraunces", Georgia, serif;
  line-height: 1.08;
  margin: 0;
  font-weight: 600;
  letter-spacing: -0.01em;
}

p {
  margin: 0;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
}

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

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal-bright);
}

.eyebrow::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--copper-light);
  box-shadow: 0 0 0 4px rgba(225, 168, 105, 0.18);
}

/* ---------------------------------- buttons ---------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 24px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  border: 1px solid transparent;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), background 0.35s var(--ease);
  white-space: nowrap;
}

.btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.btn-call {
  background: linear-gradient(135deg, var(--copper-light), var(--copper));
  color: #1c0f04;
  box-shadow: 0 14px 30px -10px rgba(193, 121, 63, 0.65);
}

.btn-call:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 18px 36px -8px rgba(193, 121, 63, 0.8);
}

.btn-whatsapp {
  background: linear-gradient(135deg, #38c491, #1e8f6a);
  color: #052014;
  box-shadow: 0 14px 30px -10px rgba(30, 143, 106, 0.65);
}

.btn-whatsapp:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 18px 36px -8px rgba(30, 143, 106, 0.8);
}

.btn-ghost {
  background: rgba(245, 241, 230, 0.06);
  border-color: var(--line-strong);
  color: var(--paper);
  backdrop-filter: blur(6px);
}

.btn-ghost:hover {
  background: rgba(245, 241, 230, 0.12);
  transform: translateY(-3px);
}

.btn-block {
  width: 100%;
}

.btn-sm {
  padding: 10px 18px;
  font-size: 13.5px;
}

/* ---------------------------------- header ---------------------------------- */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 90;
  padding: 18px 0;
  transition: padding 0.4s var(--ease), background 0.4s var(--ease), box-shadow 0.4s var(--ease);
}

.site-header.is-scrolled {
  padding: 10px 0;
  background: rgba(7, 26, 31, 0.86);
  backdrop-filter: blur(14px);
  box-shadow: 0 12px 30px -18px rgba(0, 0, 0, 0.6);
  border-bottom: 1px solid var(--line);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  width: 46px;
  height: 46px;
  flex-shrink: 0;
  filter: drop-shadow(0 8px 14px rgba(87, 202, 189, 0.35));
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-text strong {
  font-family: "Fraunces", serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--paper);
}

.brand-text span {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--teal-bright);
  font-weight: 600;
}

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

.main-nav a {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--paper-dim);
  transition: color 0.25s;
  position: relative;
}

.main-nav a:hover {
  color: var(--teal-bright);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-phone {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  text-align: right;
}

.header-phone small {
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--paper-dim);
}

.header-phone strong {
  font-size: 15px;
  color: var(--copper-light);
}

.icon-btn {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line-strong);
  background: rgba(245, 241, 230, 0.06);
  transition: transform 0.3s var(--ease), background 0.3s;
}

.icon-btn:hover {
  transform: translateY(-2px);
  background: rgba(87, 202, 189, 0.18);
}

.icon-btn svg {
  width: 19px;
  height: 19px;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--line-strong);
  background: rgba(245, 241, 230, 0.06);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  width: 20px;
  height: 2px;
  background: var(--paper);
  border-radius: 2px;
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}

/* ---------------------------------- hero ---------------------------------- */

.hero {
  position: relative;
  padding: 168px 0 120px;
  overflow: hidden;
  isolation: isolate;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -20% -10% auto -10%;
  height: 900px;
  background: radial-gradient(60% 60% at 20% 20%, rgba(47, 143, 134, 0.35), transparent 60%),
    radial-gradient(50% 50% at 85% 10%, rgba(193, 121, 63, 0.22), transparent 65%),
    linear-gradient(180deg, var(--ink-2), var(--ink) 70%);
  z-index: -2;
}

.droplet-field {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}

.droplet {
  position: absolute;
  border-radius: 45% 45% 50% 50% / 55% 55% 45% 45%;
  background: linear-gradient(155deg, rgba(87, 202, 189, 0.4), rgba(28, 90, 84, 0.05));
  filter: blur(1px);
  animation: bob 9s ease-in-out infinite;
  opacity: 0.55;
}

.droplet.d1 { width: 90px; height: 110px; top: 18%; left: 6%; animation-delay: 0s; }
.droplet.d2 { width: 46px; height: 58px; top: 62%; left: 12%; animation-delay: 1.4s; background: linear-gradient(155deg, rgba(231, 168, 105, 0.4), rgba(193, 121, 63, 0.05)); }
.droplet.d3 { width: 130px; height: 160px; top: 8%; right: 8%; animation-delay: 0.6s; }
.droplet.d4 { width: 60px; height: 74px; top: 46%; right: 18%; animation-delay: 2.2s; background: linear-gradient(155deg, rgba(231, 168, 105, 0.35), rgba(193, 121, 63, 0.05)); }
.droplet.d5 { width: 40px; height: 50px; bottom: 10%; left: 40%; animation-delay: 3s; }

@keyframes bob {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-26px) rotate(6deg); }
}

.hero .wrap {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.hero-copy h1 {
  font-size: clamp(34px, 4.6vw, 56px);
  color: var(--paper);
  margin-top: 18px;
}

.hero-copy h1 em {
  font-style: italic;
  color: var(--teal-bright);
}

.hero-copy p.lead {
  margin-top: 22px;
  font-size: 17.5px;
  color: var(--paper-dim);
  max-width: 54ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, auto);
  gap: 26px;
  margin-top: 46px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

.stat b {
  display: block;
  font-family: "Fraunces", serif;
  font-size: 26px;
  color: var(--copper-light);
}

.stat span {
  font-size: 12.5px;
  color: var(--paper-dim);
  display: block;
  margin-top: 4px;
  max-width: 14ch;
}

.hero-visual {
  position: relative;
  perspective: 1400px;
}

.hero-frame {
  position: relative;
  border-radius: var(--radius-lg);
  padding: 10px;
  background: linear-gradient(155deg, rgba(87, 202, 189, 0.5), rgba(193, 121, 63, 0.3));
  box-shadow: var(--shadow-lg);
  transform-style: preserve-3d;
  transition: transform 0.15s ease-out;
}

.hero-frame img {
  border-radius: calc(var(--radius-lg) - 8px);
  width: 100%;
  aspect-ratio: 4 / 3.1;
  object-fit: cover;
}

.floating-card {
  position: absolute;
  background: rgba(9, 32, 37, 0.82);
  border: 1px solid var(--line-strong);
  backdrop-filter: blur(16px);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 12px;
  transform: translateZ(40px);
}

.floating-card.fc-1 {
  top: -24px;
  right: -26px;
  animation: bob 8s ease-in-out infinite;
}

.floating-card.fc-2 {
  bottom: -22px;
  left: -30px;
  animation: bob 8s ease-in-out infinite 1.2s;
}

.floating-card b {
  display: block;
  font-family: "Fraunces", serif;
  font-size: 18px;
  color: var(--paper);
}

.floating-card span {
  font-size: 11.5px;
  color: var(--paper-dim);
}

.fc-icon {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--teal-bright), var(--teal-deep));
  flex-shrink: 0;
}

.fc-icon svg {
  width: 19px;
  height: 19px;
  color: var(--ink);
}

/* ---------------------------------- charge banner ---------------------------------- */

.charge-banner {
  position: relative;
  z-index: 2;
  margin-top: -60px;
}

.charge-inner {
  background: linear-gradient(120deg, var(--copper), var(--copper-light) 60%, var(--teal-bright));
  border-radius: var(--radius-lg);
  padding: 30px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: #1c0f04;
  box-shadow: 0 30px 60px -24px rgba(193, 121, 63, 0.55);
  flex-wrap: wrap;
}

.charge-inner h3 {
  font-size: 24px;
  color: #1c0f04;
}

.charge-inner p {
  margin-top: 6px;
  font-size: 14.5px;
  max-width: 46ch;
  color: rgba(28, 15, 4, 0.78);
  font-weight: 600;
}

.charge-price {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-family: "Fraunces", serif;
}

.charge-price .amount {
  font-size: 52px;
  font-weight: 700;
  line-height: 1;
}

.charge-price .unit {
  font-size: 15px;
  font-weight: 600;
}

/* ---------------------------------- section shell ---------------------------------- */

section {
  position: relative;
  padding: 120px 0;
}

.section-head {
  max-width: 640px;
  margin-bottom: 56px;
}

.section-head h2 {
  font-size: clamp(28px, 3.4vw, 40px);
  margin-top: 16px;
}

.section-head p {
  margin-top: 16px;
  color: var(--paper-dim);
  font-size: 16px;
}

.section-alt {
  background: var(--ink-2);
}

.section-alt::before,
.section-alt::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--line);
}

.section-alt::before { top: 0; }
.section-alt::after { bottom: 0; }

/* ---------------------------------- reveal ---------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------------------------------- services grid ---------------------------------- */

.services-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 18px;
}

.svc-card {
  grid-column: span 3;
  border-radius: var(--radius-md);
  padding: 28px;
  background: linear-gradient(160deg, rgba(245, 241, 230, 0.07), rgba(245, 241, 230, 0.02));
  border: 1px solid var(--line);
  transform-style: preserve-3d;
  transition: transform 0.25s var(--ease), border-color 0.25s, box-shadow 0.25s;
  position: relative;
  overflow: hidden;
}

.svc-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(140px 140px at var(--mx, 50%) var(--my, 0%), rgba(87, 202, 189, 0.16), transparent 70%);
  opacity: 0;
  transition: opacity 0.4s;
}

.svc-card:hover::after {
  opacity: 1;
}

.svc-card:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-md);
}

.svc-card.big { grid-column: span 4; }
.svc-card.small { grid-column: span 2; }

.svc-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--teal-bright), var(--teal-deep));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  transform: translateZ(30px);
}

.svc-card.copper .svc-icon,
.svc-card:nth-child(5) .svc-icon {
  background: linear-gradient(135deg, var(--copper-light), var(--copper));
}

.svc-icon svg {
  width: 26px;
  height: 26px;
  color: var(--ink);
}

.svc-card h3 {
  font-size: 20px;
  color: var(--paper);
  transform: translateZ(20px);
}

.svc-tag {
  display: inline-block;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--teal-bright);
  margin-bottom: 10px;
}

.svc-card p {
  margin-top: 10px;
  font-size: 14.5px;
  color: var(--paper-dim);
  transform: translateZ(20px);
}

/* ---------------------------------- warranty ---------------------------------- */

.warranty-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.warranty-card {
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  position: relative;
  background: var(--ink-3);
  border: 1px solid var(--line);
  overflow: hidden;
}

.warranty-card:nth-child(2) {
  background: linear-gradient(165deg, var(--teal-deep), var(--ink-3) 70%);
  transform: translateY(-14px);
  box-shadow: var(--shadow-lg);
}

.warranty-card .years {
  font-family: "Fraunces", serif;
  font-size: 56px;
  font-weight: 700;
  color: var(--copper-light);
  line-height: 1;
}

.warranty-card .years sup {
  font-size: 20px;
  top: -1.6em;
}

.warranty-card h3 {
  font-size: 19px;
  margin-top: 14px;
  color: var(--paper);
}

.warranty-card p {
  margin-top: 12px;
  font-size: 14px;
  color: var(--paper-dim);
}

.warranty-card .drop-icon {
  position: absolute;
  right: -20px;
  bottom: -20px;
  width: 120px;
  height: 120px;
  opacity: 0.08;
}

/* ---------------------------------- brands ---------------------------------- */

.brand-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.brand-pill {
  padding: 10px 20px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  font-size: 14px;
  font-weight: 600;
  color: var(--paper-dim);
  background: rgba(245, 241, 230, 0.04);
  transition: all 0.3s var(--ease);
}

.brand-pill:hover {
  color: var(--ink);
  background: var(--teal-bright);
  border-color: var(--teal-bright);
  transform: translateY(-3px);
}

.disclaimer {
  margin-top: 26px;
  font-size: 12.5px;
  color: var(--paper-dim);
  opacity: 0.7;
  max-width: 70ch;
}

/* ---------------------------------- why choose ---------------------------------- */

.why-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
  align-items: center;
}

.why-visual {
  position: relative;
}

.why-visual img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.why-badge {
  position: absolute;
  bottom: -20px;
  right: -20px;
  background: var(--copper-light);
  color: #1c0f04;
  border-radius: var(--radius-md);
  padding: 16px 22px;
  box-shadow: var(--shadow-md);
  font-family: "Fraunces", serif;
  text-align: center;
}

.why-badge b {
  display: block;
  font-size: 30px;
  line-height: 1;
}

.why-badge span {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.why-list {
  display: flex;
  flex-direction: column;
  gap: 22px;
  margin-top: 30px;
}

.why-item {
  display: flex;
  gap: 16px;
}

.why-item .num {
  font-family: "Fraunces", serif;
  font-size: 22px;
  color: var(--teal-bright);
  min-width: 34px;
}

.why-item h4 {
  font-size: 16.5px;
  color: var(--paper);
}

.why-item p {
  margin-top: 6px;
  font-size: 14px;
  color: var(--paper-dim);
}

/* ---------------------------------- areas ---------------------------------- */

.areas-zone {
  margin-bottom: 34px;
}

.areas-zone h3 {
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--copper-light);
  margin-bottom: 16px;
  font-family: "Manrope", sans-serif;
  font-weight: 800;
}

.areas-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.areas-list span {
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(245, 241, 230, 0.04);
  border: 1px solid var(--line);
  font-size: 13.5px;
  color: var(--paper-dim);
}

.areas-note {
  margin-top: 30px;
  font-size: 14.5px;
  color: var(--paper-dim);
  max-width: 70ch;
}

/* ---------------------------------- testimonials ---------------------------------- */

.testi-track {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.testi-card {
  background: var(--ink-3);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 28px;
}

.stars {
  color: var(--copper-light);
  font-size: 15px;
  letter-spacing: 2px;
}

.testi-card p {
  margin-top: 14px;
  font-size: 14.5px;
  color: var(--paper-dim);
  font-style: italic;
}

.testi-who {
  margin-top: 18px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.testi-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Fraunces", serif;
  font-weight: 700;
  color: var(--ink);
  background: linear-gradient(135deg, var(--teal-bright), var(--copper-light));
}

.testi-who b {
  display: block;
  font-size: 14px;
  color: var(--paper);
}

.testi-who span {
  font-size: 12px;
  color: var(--teal-bright);
}

/* ---------------------------------- faq ---------------------------------- */

.faq-list {
  max-width: 820px;
}

.faq-item {
  border-bottom: 1px solid var(--line);
  padding: 6px 0;
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 4px;
  font-size: 17px;
  font-weight: 600;
  color: var(--paper);
  font-family: "Fraunces", serif;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-size: 22px;
  color: var(--teal-bright);
  transition: transform 0.3s var(--ease);
  flex-shrink: 0;
  margin-left: 20px;
}

.faq-item[open] summary::after {
  transform: rotate(135deg);
}

.faq-item .faq-a {
  padding: 0 4px 22px;
  font-size: 14.5px;
  color: var(--paper-dim);
  max-width: 68ch;
}

/* ---------------------------------- contact ---------------------------------- */

.contact-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 50px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.contact-row {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-row .ci-icon {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  background: rgba(87, 202, 189, 0.14);
  border: 1px solid var(--line-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-row .ci-icon svg {
  width: 21px;
  height: 21px;
  color: var(--teal-bright);
}

.contact-row h4 {
  font-size: 15px;
  color: var(--paper);
}

.contact-row p, .contact-row a {
  font-size: 14px;
  color: var(--paper-dim);
  margin-top: 4px;
}

.contact-form {
  background: var(--ink-3);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 38px;
  box-shadow: var(--shadow-lg);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}

.field.full {
  grid-column: span 2;
}

.field label {
  font-size: 12.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--paper-dim);
}

.field input,
.field select,
.field textarea {
  background: rgba(7, 26, 31, 0.6);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 13px 16px;
  color: var(--paper);
  font-family: inherit;
  font-size: 14.5px;
  transition: border-color 0.25s, box-shadow 0.25s;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--teal-bright);
  box-shadow: 0 0 0 3px rgba(87, 202, 189, 0.18);
}

.field textarea {
  resize: vertical;
  min-height: 90px;
}

.hp-field {
  position: absolute;
  left: -9999px;
  top: -9999px;
}

.form-note {
  margin-top: 14px;
  font-size: 12.5px;
  color: var(--paper-dim);
  text-align: center;
}

/* ---------------------------------- footer ---------------------------------- */

.site-footer {
  background: #051318;
  border-top: 1px solid var(--line);
  padding: 70px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.8fr 0.8fr 1fr;
  gap: 40px;
}

.footer-brand p {
  margin-top: 16px;
  font-size: 14px;
  color: var(--paper-dim);
  max-width: 34ch;
}

.footer-col h5 {
  font-size: 12.5px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--copper-light);
  margin-bottom: 16px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  font-size: 14px;
  color: var(--paper-dim);
}

.footer-col a:hover {
  color: var(--teal-bright);
}

.footer-bottom {
  margin-top: 60px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12.5px;
  color: var(--paper-dim);
  opacity: 0.75;
}

/* ---------------------------------- floating action buttons ---------------------------------- */

.fab-stack {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 80;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.fab {
  width: 58px;
  height: 58px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 16px 30px -10px rgba(0, 0, 0, 0.5);
  transition: transform 0.3s var(--ease);
  position: relative;
}

.fab:hover {
  transform: translateY(-4px) scale(1.06);
}

.fab-call {
  background: linear-gradient(135deg, var(--copper-light), var(--copper));
}

.fab-whatsapp {
  background: linear-gradient(135deg, #38c491, #1e8f6a);
}

.fab svg {
  width: 26px;
  height: 26px;
  color: #0d1a10;
}

.fab-ping {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid rgba(56, 196, 145, 0.6);
  animation: ping 2.2s ease-out infinite;
}

@keyframes ping {
  0% { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(1.7); opacity: 0; }
}

.mobile-cta-bar {
  display: none;
}

/* ---------------------------------- responsive ---------------------------------- */

@media (max-width: 980px) {
  .main-nav { display: none; }
  .nav-toggle { display: inline-flex; }

  .header-phone { display: none; }

  .hero { padding: 140px 0 100px; }
  .hero .wrap { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
  .hero-stats { grid-template-columns: repeat(2, auto); }

  .charge-inner { flex-direction: column; text-align: center; }

  .why-grid { grid-template-columns: 1fr; }
  .why-visual { order: 2; }

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

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

  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .svc-card, .svc-card.big, .svc-card.small { grid-column: span 1; }

  .warranty-grid { grid-template-columns: 1fr; }
  .warranty-card:nth-child(2) { transform: none; }

  .testi-track { grid-template-columns: 1fr; }

  body { padding-bottom: 78px; }

  .fab-stack { display: none; }

  .mobile-cta-bar {
    display: flex;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 85;
    background: rgba(7, 26, 31, 0.96);
    backdrop-filter: blur(14px);
    border-top: 1px solid var(--line-strong);
    padding: 10px 14px;
    gap: 10px;
  }

  .mobile-cta-bar .btn {
    flex: 1;
    padding: 13px 10px;
    font-size: 13.5px;
  }
}

@media (max-width: 720px) {
  .form-grid { grid-template-columns: 1fr; }
  .field.full { grid-column: span 1; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 20px; }
}

.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 95;
  background: rgba(5, 19, 24, 0.98);
  backdrop-filter: blur(10px);
  display: flex;
  flex-direction: column;
  padding: 100px 32px 40px;
  gap: 6px;
  transform: translateX(100%);
  transition: transform 0.4s var(--ease);
}

.mobile-nav.is-open {
  transform: translateX(0);
}

.mobile-nav a {
  font-family: "Fraunces", serif;
  font-size: 26px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  color: var(--paper);
}

.mobile-nav-close {
  position: absolute;
  top: 26px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  background: rgba(245, 241, 230, 0.06);
}

.mobile-nav .btn {
  margin-top: 20px;
}