/* ============================================================
   SOLAR ASSAM — Complete Design System & All Pages
   ============================================================ */

/* ---------- CSS Variables ---------- */
:root {
  --color-primary: #C1272D;
  --color-primary-dark: #9E1F24;
  --color-accent: #F5B800;
  --color-bg: #FAFAFA;
  --color-surface: #FFFFFF;
  --color-text: #111111;
  --color-text-secondary: #666666;
  --color-divider: #E8E8E8;
  --color-green: #1B9E3E;

  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-width: 1200px;

  --radius-sm: 12px;
  --radius-md: 16px;
  --shadow-card: 0 2px 16px rgba(0, 0, 0, .06);
  --shadow-card-hover: 0 8px 32px rgba(0, 0, 0, .10);
  --shadow-btn: 0 4px 14px rgba(193, 39, 45, .30);

  --section-padding: 80px;
  --section-padding-mobile: 48px;
  --nav-height: 64px;
}

/* ---------- Reset ---------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

button {
  font-family: inherit;
}

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

/* ---------- Section Helpers ---------- */
.section-title {
  text-align: center;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 48px;
  color: var(--color-text);
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  background: var(--color-primary);
  border-radius: 2px;
  margin: 12px auto 0;
}

.section-title--left {
  text-align: left;
}

.section-title--left::after {
  margin: 12px 0 0;
}

.section-subtitle {
  text-align: center;
  font-size: 15px;
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: -32px auto 48px;
  line-height: 1.6;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-family);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  border: none;
  border-radius: var(--radius-sm);
  transition: transform .25s cubic-bezier(.4, 0, .2, 1),
    box-shadow .25s cubic-bezier(.4, 0, .2, 1),
    background .25s ease;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  padding: 14px 32px;
  box-shadow: var(--shadow-btn);
  letter-spacing: 0.02em;
}

.btn--primary:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 20px rgba(193, 39, 45, .40);
}

.btn--primary:active {
  transform: scale(.98);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  padding: 14px 32px;
  border: 2px solid var(--color-primary);
}

.btn--outline:hover {
  background: var(--color-primary);
  color: #fff;
  transform: scale(1.03);
}

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(250, 250, 250, .92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 0, 0, .06);
  transition: box-shadow .3s ease;
}

.navbar.scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, .08);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.navbar__brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.navbar__logo {
  width: 36px;
  height: 36px;
  object-fit: contain;
}

.navbar__name {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--color-text);
}

.navbar__links {
  display: flex;
  list-style: none;
  gap: 6px;
}

.navbar__links a {
  display: block;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: 8px;
  transition: color .2s ease, background .2s ease;
}

.navbar__links a:hover,
.navbar__links a.active {
  color: var(--color-primary);
  background: rgba(193, 39, 45, .06);
}

/* Hamburger */
.navbar__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.navbar__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform .3s ease, opacity .3s ease;
}

.navbar__hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.navbar__hamburger.open span:nth-child(2) {
  opacity: 0;
}

.navbar__hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-top: var(--nav-height);
  background: #111;
}

.hero::before {
  content: '';
  position: absolute;
  inset: -20px;
  background: url(images/optimized/solar-installation-assam-hero.webp) center / cover no-repeat;
  filter: blur(10px);
  transform: scale(1.03);
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, .26);
  pointer-events: none;
}

.hero__pattern {
  position: absolute;
  inset: 0;
  background: url('images/optimized/assam-jaapi-pattern.webp') center / 420px repeat;
  opacity: .06;
  pointer-events: none;
  z-index: 1;
}

.hero__glow {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 600px;
  height: 600px;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(245, 184, 0, .12) 0%, transparent 70%);
  pointer-events: none;
  z-index: 1;
}

.hero__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: 2;
}

.hero__logo {
  width: 100px;
  height: auto;
  margin-bottom: 28px;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, .08));
  animation: fadeInUp .8s ease both;
}

.hero__title {
  font-size: 48px;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--color-text);
  margin-bottom: 12px;
  animation: fadeInUp .8s .15s ease both;
}

.hero__tagline {
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text-secondary);
  opacity: .7;
  margin-bottom: 36px;
  letter-spacing: 0.04em;
  animation: fadeInUp .8s .3s ease both;
}

.hero .btn {
  animation: fadeInUp .8s .45s ease both;
}

/* ============================================================
   ABOUT SNIPPET
   ============================================================ */
.about-snippet {
  padding: var(--section-padding) 0;
  background: var(--color-surface);
}

.about-snippet__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-snippet__text p {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  line-height: 1.7;
}

.about-snippet__text .btn {
  margin-top: 8px;
}

.about-snippet__visual {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.stat-card {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 24px 16px;
  text-align: center;
  border: 1px solid var(--color-divider);
}

.stat-card__number {
  display: block;
  font-size: 28px;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.stat-card__label {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ============================================================
   SYSTEM OPTIONS
   ============================================================ */
.systems {
  padding: var(--section-padding) 0;
  background: var(--color-bg);
}

.systems__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-card);
  transition: transform .3s cubic-bezier(.4, 0, .2, 1),
    box-shadow .3s cubic-bezier(.4, 0, .2, 1);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}

.card__icon {
  font-size: 28px;
  display: block;
  margin-bottom: 12px;
}

.card__title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
}

.card__badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: rgba(193, 39, 45, .08);
  color: var(--color-primary);
  padding: 3px 8px;
  border-radius: 6px;
  vertical-align: middle;
  margin-left: 6px;
}

.card__sub {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.card__divider {
  border: none;
  height: 1px;
  background: var(--color-divider);
  margin: 18px 0;
}

.card__pricing {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.card__pricing--centered {
  align-items: center;
  text-align: center;
  padding: 16px 0;
}

.card__row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card__label {
  font-size: 14px;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.card__value {
  font-size: 15px;
  font-weight: 600;
}

.card__value--green {
  color: var(--color-green);
}

.card__subsidy-detail {
  font-size: 12px;
  color: var(--color-text-secondary);
  text-align: right;
  margin-top: -4px;
  opacity: .8;
}

.card__final {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(135deg, rgba(245, 184, 0, .08), rgba(245, 184, 0, .04));
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  margin-top: 6px;
}

.card__final-label {
  font-size: 14px;
  font-weight: 600;
}

.card__final-price {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-accent);
  text-shadow: 0 1px 2px rgba(0, 0, 0, .06);
}

.card__footer {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.card__example span {
  opacity: .7;
}

/* ============================================================
   SOLAR CALCULATOR
   ============================================================ */
.calculator {
  padding: var(--section-padding) 0;
  background: var(--color-surface);
}

.calc-card {
  max-width: 640px;
  margin: 0 auto;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 36px;
  border: 1px solid var(--color-divider);
}

.calc-card__input-group {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.calc-card__label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
}

.calc-card__input-wrap {
  display: flex;
  align-items: center;
  background: var(--color-surface);
  border: 2px solid var(--color-divider);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color .2s ease;
}

.calc-card__input-wrap:focus-within {
  border-color: var(--color-primary);
}

.calc-card__currency {
  padding: 14px 16px;
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text-secondary);
  background: var(--color-bg);
  border-right: 1px solid var(--color-divider);
}

.calc-card__input {
  flex: 1;
  padding: 14px 16px;
  border: none;
  outline: none;
  font-size: 18px;
  font-weight: 600;
  font-family: inherit;
  background: transparent;
  color: var(--color-text);
}

.calc-card__input::placeholder {
  color: #bbb;
  font-weight: 400;
}

.calc-card__btn {
  width: 100%;
}

/* Results */
.calc-card__results {
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  animation: fadeInUp .5s ease;
}

.calc-result {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-divider);
}

.calc-result--highlight {
  background: linear-gradient(135deg, rgba(245, 184, 0, .08), rgba(245, 184, 0, .04));
  border-color: rgba(245, 184, 0, .3);
}

.calc-result__icon {
  font-size: 20px;
}

.calc-result__label {
  flex: 1;
  font-size: 14px;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.calc-result__value {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
}

.calc-result__value--green {
  color: var(--color-green);
}

.calc-result__value--gold {
  color: var(--color-accent);
  font-size: 22px;
}

.calc-card__cta {
  margin-top: 12px;
  width: 100%;
  justify-content: center;
}

/* ============================================================
   SUBSIDY ELIGIBILITY
   ============================================================ */
.subsidy {
  padding: var(--section-padding) 0;
  background: var(--color-bg);
}

.subsidy__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

.subsidy__item {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  box-shadow: var(--shadow-card);
  transition: transform .3s ease;
}

.subsidy__item:hover {
  transform: translateY(-4px);
}

.subsidy__icon-wrap {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(193, 39, 45, .06);
  color: var(--color-primary);
  margin: 0 auto 14px;
}

.subsidy__item h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 6px;
}

.subsidy__item p {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.subsidy__note {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  background: rgba(245, 184, 0, .08);
  border: 1px solid rgba(245, 184, 0, .2);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  max-width: 720px;
  margin: 0 auto;
}

.subsidy__note svg {
  flex-shrink: 0;
  color: var(--color-accent);
  margin-top: 2px;
}

.subsidy__note p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ============================================================
   GALLERY
   ============================================================ */
.gallery {
  padding: var(--section-padding) 0;
  background: var(--color-surface);
}

.gallery__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.gallery__item {
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
}

.gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s cubic-bezier(.4, 0, .2, 1);
}

.gallery__item:hover img {
  transform: scale(1.08);
}

.gallery__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, .65) 0%, transparent 60%);
  display: flex;
  align-items: flex-end;
  padding: 16px;
  opacity: 0;
  transition: opacity .3s ease;
}

.gallery__item:hover .gallery__overlay {
  opacity: 1;
}

.gallery__overlay span {
  color: #fff;
  font-size: 13px;
  font-weight: 600;
}

/* ============================================================
   TESTIMONIALS
   ============================================================ */
.testimonials {
  padding: var(--section-padding) 0;
  background: var(--color-bg);
}

.testimonials__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.testimonial {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-card);
  transition: transform .3s ease, box-shadow .3s ease;
}

.testimonial:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.testimonial__stars {
  color: var(--color-accent);
  font-size: 16px;
  letter-spacing: 2px;
  margin-bottom: 14px;
}

.testimonial__text {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 18px;
  font-style: italic;
}

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

.testimonial__avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), #e74c3c);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  flex-shrink: 0;
}

.testimonial__name {
  font-size: 14px;
  font-weight: 600;
}

.testimonial__location {
  font-size: 12px;
  color: var(--color-text-secondary);
}

/* ============================================================
   WHY SOLAR ASSAM
   ============================================================ */
.why {
  padding: var(--section-padding) 0;
  background: var(--color-surface);
}

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

.why__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.why__icon-wrap {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(193, 39, 45, .06);
  color: var(--color-primary);
  transition: background .3s ease, transform .3s ease;
}

.why__item:hover .why__icon-wrap {
  background: rgba(193, 39, 45, .12);
  transform: translateY(-3px);
}

.why__text {
  font-size: 14px;
  font-weight: 600;
}

/* ============================================================
   FAQ
   ============================================================ */
.faq {
  padding: var(--section-padding) 0;
  background: var(--color-bg);
}

.faq__list {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.faq__item {
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: 0 1px 4px rgba(0, 0, 0, .04);
}

.faq__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  gap: 12px;
}

.faq__question:hover {
  background: rgba(0, 0, 0, .02);
}

.faq__chevron {
  flex-shrink: 0;
  transition: transform .3s ease;
  color: var(--color-text-secondary);
}

.faq__item.open .faq__chevron {
  transform: rotate(180deg);
}

.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s cubic-bezier(.4, 0, .2, 1),
    padding .4s cubic-bezier(.4, 0, .2, 1);
  padding: 0 22px;
}

.faq__item.open .faq__answer {
  max-height: 300px;
  padding: 0 22px 20px;
}

.faq__answer p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ============================================================
   CTA
   ============================================================ */
.cta {
  padding: var(--section-padding) 0;
  background: var(--color-surface);
}

.cta__inner {
  text-align: center;
}

.cta__heading {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.cta__sub {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin-bottom: 28px;
}

.cta__buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  padding: 48px 0 32px;
  background: #0E0E0E;
  color: #fff;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
}

.footer__logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
  margin-bottom: 8px;
  filter: brightness(10);
}

.footer__tagline {
  font-size: 13px;
  color: rgba(255, 255, 255, .5);
}

.footer h4 {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 14px;
  color: rgba(255, 255, 255, .8);
}

.footer__contact a,
.footer__social a {
  display: block;
  font-size: 14px;
  color: rgba(255, 255, 255, .6);
  margin-bottom: 8px;
  transition: color .2s ease;
}

.footer__contact a:hover,
.footer__social a:hover {
  color: var(--color-accent);
}

.footer__social-link {
  display: flex !important;
  align-items: center;
  gap: 8px;
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding-top: 20px;
}

.footer__bottom p {
  font-size: 13px;
  color: rgba(255, 255, 255, .35);
  text-align: center;
}

/* ============================================================
   FLOATING BUTTONS
   ============================================================ */
.floating-buttons {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 12px;
  animation: floatIn .6s .5s ease both;
}

.floating-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  box-shadow: 0 4px 16px rgba(0, 0, 0, .2);
  transition: transform .25s ease, box-shadow .25s ease;
}

.floating-btn:hover {
  transform: scale(1.12);
  box-shadow: 0 6px 24px rgba(0, 0, 0, .3);
}

.floating-btn--whatsapp {
  background: #25D366;
}

.floating-btn--call {
  background: var(--color-primary);
}

/* ============================================================
   PAGE HEADER (About / Contact)
   ============================================================ */
.page-header {
  position: relative;
  padding: calc(var(--nav-height) + 56px) 0 56px;
  background: var(--color-bg);
  text-align: center;
  overflow: hidden;
}

.page-header__title {
  font-size: 40px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
  position: relative;
}

.page-header__sub {
  font-size: 16px;
  color: var(--color-text-secondary);
  position: relative;
}

.page-header__actions {
  position: relative;
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 24px;
}

/* ============================================================
   ABOUT PAGE
   ============================================================ */
.about-page {
  padding: var(--section-padding) 0;
}

.about-page__section {
  max-width: 720px;
  margin-bottom: 64px;
}

.about-page__section p {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  line-height: 1.8;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 64px;
}

.value-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 28px;
  text-align: center;
  box-shadow: var(--shadow-card);
  transition: transform .3s ease;
}

.value-card:hover {
  transform: translateY(-4px);
}

.value-card__icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(193, 39, 45, .06);
  color: var(--color-primary);
  margin: 0 auto 16px;
}

.value-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.value-card p {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* Process */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 64px;
}

.process-step {
  text-align: center;
  position: relative;
}

.process-step__number {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  margin: 0 auto 14px;
}

.process-step h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 6px;
}

.process-step p {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.about-page__cta {
  text-align: center;
  padding: 48px;
  background: var(--color-bg);
  border-radius: var(--radius-md);
}

.about-page__cta h2 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 8px;
}

.about-page__cta p {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin-bottom: 24px;
}

.about-page__values {
  margin-bottom: 0;
}

/* ============================================================
   CONTACT PAGE
   ============================================================ */
.contact-page {
  padding: var(--section-padding) 0;
}

.contact-page__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-form-wrap h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 28px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 16px;
  border: 2px solid var(--color-divider);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-surface);
  outline: none;
  transition: border-color .2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

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

.form-submit {
  width: 100%;
  justify-content: center;
}

.form-note {
  font-size: 13px;
  color: var(--color-text-secondary);
  text-align: center;
}

.form-note a {
  color: var(--color-primary);
  font-weight: 600;
}

/* Success state */
.form-success {
  text-align: center;
  padding: 48px 24px;
  animation: fadeInUp .5s ease;
}

.form-success__icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--color-green);
  color: #fff;
  font-size: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.form-success h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}

.form-success p {
  font-size: 14px;
  color: var(--color-text-secondary);
}

/* Contact info sidebar */
.contact-info__card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-card);
  margin-bottom: 24px;
}

.contact-info__card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 22px;
}

.contact-info__item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  margin-bottom: 18px;
}

.contact-info__item svg {
  flex-shrink: 0;
  color: var(--color-primary);
  margin-top: 2px;
}

.contact-info__label {
  font-size: 12px;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  margin-bottom: 2px;
}

.contact-info__item a,
.contact-info__item p {
  font-size: 14px;
  color: var(--color-text);
}

.contact-info__item a:hover {
  color: var(--color-primary);
}

.contact-map {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

/* ============================================================
   SEO LANDING PAGES
   ============================================================ */
.seo-page {
  padding: var(--section-padding) 0;
  background: var(--color-surface);
}

.seo-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 48px;
  align-items: start;
}

.seo-content {
  max-width: 760px;
}

.seo-content h2 {
  font-size: 26px;
  margin: 36px 0 14px;
}

.seo-content h2:first-child {
  margin-top: 0;
}

.seo-content h3 {
  font-size: 18px;
  margin: 24px 0 8px;
}

.seo-content p,
.seo-content li {
  color: var(--color-text-secondary);
  font-size: 15px;
  line-height: 1.8;
}

.seo-content ul,
.seo-content ol {
  padding-left: 20px;
  margin: 12px 0 20px;
}

.seo-table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0 26px;
  overflow: hidden;
  border-radius: var(--radius-sm);
  box-shadow: 0 0 0 1px var(--color-divider);
}

.seo-table th,
.seo-table td {
  text-align: left;
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-divider);
  font-size: 14px;
}

.seo-table th {
  background: rgba(193, 39, 45, .06);
  font-weight: 700;
}

.seo-table tr:last-child td {
  border-bottom: 0;
}

.seo-sidebar {
  position: sticky;
  top: calc(var(--nav-height) + 24px);
  background: var(--color-bg);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  padding: 24px;
}

.seo-sidebar h2 {
  font-size: 20px;
  margin-bottom: 10px;
}

.seo-sidebar p {
  color: var(--color-text-secondary);
  font-size: 14px;
  margin-bottom: 18px;
}

.seo-sidebar .btn {
  width: 100%;
  justify-content: center;
  margin-bottom: 12px;
}

.quick-links {
  list-style: none;
  padding: 0;
  margin-top: 20px;
}

.quick-links a {
  display: block;
  padding: 10px 0;
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 600;
  border-top: 1px solid var(--color-divider);
}

.case-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 18px 0 28px;
}

.case-gallery img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-divider);
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes floatIn {
  from {
    opacity: 0;
    transform: translateY(32px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .7s cubic-bezier(.4, 0, .2, 1),
    transform .7s cubic-bezier(.4, 0, .2, 1);
}

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

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .navbar__hamburger {
    display: flex;
  }

  .navbar__links {
    position: fixed;
    top: var(--nav-height);
    right: 0;
    width: 280px;
    height: calc(100vh - var(--nav-height));
    background: var(--color-surface);
    flex-direction: column;
    padding: 24px;
    gap: 4px;
    box-shadow: -4px 0 24px rgba(0, 0, 0, .1);
    transform: translateX(100%);
    transition: transform .35s cubic-bezier(.4, 0, .2, 1);
    overflow-y: auto;
  }

  .navbar__links.open {
    transform: translateX(0);
  }

  .navbar__links a {
    padding: 12px 16px;
    font-size: 15px;
    border-radius: 10px;
  }

  .hero__title {
    font-size: 36px;
  }

  .about-snippet__inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .about-snippet__text {
    max-width: 680px;
  }

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

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

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

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

  .why__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

  .section-title {
    font-size: 24px;
  }

  .cta__heading {
    font-size: 26px;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

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

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

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

  .seo-layout {
    grid-template-columns: 1fr;
  }

  .seo-sidebar {
    position: static;
  }
}

@media (max-width: 600px) {
  :root {
    --section-padding: 48px;
  }

  .hero {
    min-height: 85vh;
  }

  .hero::before {
    filter: blur(8px);
  }

  .hero::after {
    background: rgba(255, 255, 255, .2);
  }

  .hero__logo {
    width: 72px;
  }

  .hero__title {
    font-size: 28px;
    letter-spacing: 0.04em;
  }

  .hero__tagline {
    font-size: 14px;
    max-width: 300px;
    line-height: 1.5;
  }

  .about-snippet__visual {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .stat-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 18px;
    text-align: left;
    border-radius: var(--radius-sm);
  }

  .stat-card__number {
    font-size: 24px;
    margin-bottom: 0;
    white-space: nowrap;
  }

  .stat-card__label {
    font-size: 12px;
    line-height: 1.35;
    text-align: right;
  }

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

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

  .why__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .card {
    padding: 22px;
  }

  .card__final-price {
    font-size: 24px;
  }

  .calc-card {
    padding: 24px;
  }

  .cta__heading {
    font-size: 22px;
  }

  .page-header__title {
    font-size: 28px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

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

  .floating-buttons {
    bottom: 16px;
    right: 16px;
  }

  .floating-btn {
    width: 50px;
    height: 50px;
  }

  .case-gallery {
    grid-template-columns: 1fr;
  }
}