:root {
  --bg: #0b0d10;
  --bg-alt: #11151b;
  --surface: #1a1f27;
  --accent: #f4c430;
  --accent-dark: #c4970c;
  --text: #f5f6f7;
  --muted: #a5acb8;
  --danger: #ff4d4d;
  --shadow: rgba(0, 0, 0, 0.45);
  --radius: 16px;
  --transition: 0.3s ease;
}

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

body {
  font-family: "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

img {
  max-width: 100%;
}

section {
  padding: 4rem 1.5rem;
}

.section-header {
  max-width: 860px;
  margin: 0 auto 2.5rem;
  text-align: center;
}

.section-header h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  margin-bottom: 0.5rem;
}

.section-header p {
  color: var(--muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.6rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.btn-primary {
  background: var(--accent);
  color: #121212;
  box-shadow: 0 8px 20px rgba(244, 196, 48, 0.25);
}

.btn-primary:hover {
  background: var(--accent-dark);
}

.btn-ghost {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-ghost:hover,
.btn-ghost.active {
  background: var(--accent);
  color: #121212;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(11, 13, 16, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(244, 196, 48, 0.2);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  gap: 1rem;
}

.logo {
  font-size: 1.4rem;
  font-weight: 700;
}

.logo span {
  color: var(--accent);
}

.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  gap: 6px;
  background: transparent;
  border: none;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--accent);
}

.nav-links {
  list-style: none;
  display: none;
  flex-direction: column;
  gap: 0.8rem;
  background: var(--surface);
  padding: 1rem;
  border-radius: var(--radius);
  position: absolute;
  top: 64px;
  left: 1.5rem;
  right: 1.5rem;
  box-shadow: 0 12px 30px var(--shadow);
}

.nav-links.show {
  display: flex;
}

.hero {
  display: grid;
  gap: 2rem;
  background: linear-gradient(120deg, #0b0d10 0%, #121822 100%);
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(135deg, rgba(244, 196, 48, 0.08) 0 10px, transparent 10px 20px);
  opacity: 0.35;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.eyebrow {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.8rem;
  margin-bottom: 0.8rem;
}

.hero h1 {
  font-size: clamp(2.5rem, 4vw, 3.6rem);
  margin-bottom: 1.5rem;
}

.hero h1 span {
  color: var(--accent);
}

.hero-benefits {
  list-style: none;
  display: grid;
  gap: 0.6rem;
  margin-bottom: 2rem;
}

.hero-benefits li::before {
  content: "▌";
  color: var(--accent);
  margin-right: 0.6rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.hero-panel {
  position: relative;
  background: var(--surface);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: 0 12px 30px var(--shadow);
  overflow: hidden;
}

.panel-strip {
  position: absolute;
  top: 0;
  left: 0;
  height: 6px;
  width: 100%;
  background: repeating-linear-gradient(90deg, var(--accent) 0 16px, #000 16px 32px);
}

.panel-stats {
  display: grid;
  gap: 1rem;
}

.panel-stats p {
  font-size: 2rem;
  font-weight: 700;
}

.panel-stats span {
  color: var(--muted);
}

.services {
  background: var(--bg-alt);
}

.service-grid {
  display: grid;
  gap: 1.5rem;
}

.service-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.8rem;
  border: 1px solid rgba(244, 196, 48, 0.2);
  box-shadow: inset 0 0 0 1px rgba(244, 196, 48, 0.05);
  position: relative;
}

.service-card::after {
  content: "";
  position: absolute;
  bottom: 1rem;
  right: 1rem;
  width: 40px;
  height: 6px;
  background: var(--accent);
}

.calculator-grid {
  display: grid;
  gap: 2rem;
}

.calc-form,
.calc-result {
  background: var(--surface);
  padding: 2rem;
  border-radius: var(--radius);
  border: 1px solid rgba(244, 196, 48, 0.15);
}

.calc-form label {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

select,
input,
textarea {
  background: #0e1218;
  border: 1px solid rgba(244, 196, 48, 0.2);
  color: var(--text);
  padding: 0.7rem 0.9rem;
  border-radius: 10px;
}

.checkbox {
  flex-direction: row;
  align-items: center;
  gap: 0.6rem;
}

.calc-note {
  color: var(--muted);
  font-size: 0.85rem;
}

.price {
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--accent);
  margin: 1rem 0;
}

.breakdown {
  list-style: none;
  color: var(--muted);
  display: grid;
  gap: 0.4rem;
}

.before-after {
  background: var(--bg-alt);
}

.ba-wrapper {
  max-width: 760px;
  margin: 0 auto;
  display: grid;
  gap: 1rem;
}

.ba-frame {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  height: 260px;
  background: #0e1118;
}

.ba-layer {
  position: absolute;
  inset: 0;
}

.ba-after {
  background: linear-gradient(130deg, #2c323a, #10141b);
}

.ba-before {
  background: linear-gradient(130deg, #f4c430, #7d5a00);
  clip-path: inset(0 45% 0 0);
}

.ba-line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 55%;
  width: 2px;
  background: #fff;
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.4);
}

#ba-slider {
  width: 100%;
}

.reviews {
  background: var(--bg);
}

.review-controls {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.review-list {
  display: grid;
  gap: 1rem;
}

.review-card {
  background: var(--surface);
  padding: 1.5rem;
  border-radius: var(--radius);
  border: 1px solid rgba(244, 196, 48, 0.1);
}

.review-meta {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.6rem;
  color: var(--accent);
}

.faq {
  background: var(--bg-alt);
}

.faq-item {
  background: var(--surface);
  border-radius: var(--radius);
  margin-bottom: 1rem;
  border: 1px solid rgba(244, 196, 48, 0.12);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 1.2rem 1.5rem;
  text-align: left;
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  padding: 0 1.5rem;
  color: var(--muted);
  transition: max-height var(--transition), padding var(--transition);
}

.faq-item.open .faq-answer {
  max-height: 200px;
  padding-bottom: 1.2rem;
}

.booking {
  background: var(--bg);
}

.booking-form {
  max-width: 700px;
  margin: 0 auto;
  display: grid;
  gap: 1rem;
  background: var(--surface);
  padding: 2rem;
  border-radius: var(--radius);
  border: 1px solid rgba(244, 196, 48, 0.2);
}

.booking-form button {
  justify-self: flex-start;
}

.form-status {
  color: var(--accent);
  min-height: 1.4rem;
}

input:invalid,
select:invalid,
textarea:invalid {
  border-color: rgba(255, 77, 77, 0.6);
}

.contact {
  background: var(--bg-alt);
}

.contact-grid {
  display: grid;
  gap: 2rem;
  align-items: center;
}

.contact-actions {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer {
  padding: 2rem 1.5rem;
  background: #07090c;
  border-top: 1px solid rgba(244, 196, 48, 0.2);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.toast {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  background: var(--accent);
  color: #121212;
  padding: 0.9rem 1.2rem;
  border-radius: 12px;
  opacity: 0;
  transform: translateY(20px);
  transition: var(--transition);
  pointer-events: none;
  box-shadow: 0 10px 20px var(--shadow);
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: 0.6s ease;
}

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

@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }

  .nav-links {
    display: flex;
    position: static;
    flex-direction: row;
    background: transparent;
    padding: 0;
    box-shadow: none;
  }

  .hero {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: center;
    padding: 5rem 3rem;
  }

  .service-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .calculator-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }

  .review-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .contact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
  }
}

@media (min-width: 1024px) {
  .navbar {
    padding: 1.2rem 3rem;
  }

  section {
    padding: 5rem 3rem;
  }
}