/* =========================================================
   Sachin Deep Cleaning — Themeable, modern, mobile-first
   Light theme  : white + emerald green
   Dark theme   : black + white + yellow   ([data-theme="dark"])
   ========================================================= */

/* ---------- Light theme (default) ---------- */
:root,
[data-theme="light"] {
  --primary: #10b981;          /* emerald-500 */
  --primary-dark: #059669;     /* emerald-600 */
  --primary-darker: #047857;   /* emerald-700 */
  --primary-soft: #d1fae5;     /* emerald-100 */
  --accent: #34d399;           /* emerald-400 */
  --on-primary: #ffffff;

  --bg: #ffffff;
  --bg-alt: #ecfdf5;           /* emerald-50 */
  --card: #ffffff;
  --card-muted: #f8fafc;
  --dark: #0f172a;             /* headings / strong text */
  --text: #475569;
  --muted: #6b7280;
  --border: #e5e7eb;

  --header-bg: rgba(255, 255, 255, 0.82);
  --shadow: 0 10px 30px rgba(16, 185, 129, 0.10);
  --shadow-strong: 0 18px 45px rgba(15, 23, 42, 0.14);
  --hero-grad: radial-gradient(1000px 520px at 82% -12%, rgba(16,185,129,0.14), transparent 60%),
               linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
  --radius: 18px;
  --radius-sm: 12px;
}

/* ---------- Dark theme ---------- */
[data-theme="dark"] {
  --primary: #facc15;          /* yellow-400 */
  --primary-dark: #eab308;     /* yellow-500 */
  --primary-darker: #ca8a04;   /* yellow-600 */
  --primary-soft: rgba(250, 204, 21, 0.14);
  --accent: #fde047;           /* yellow-300 */
  --on-primary: #0a0a0a;

  --bg: #0a0a0a;               /* black */
  --bg-alt: #111111;
  --card: #141414;
  --card-muted: #1b1b1b;
  --dark: #ffffff;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --border: #2a2a2a;

  --header-bg: rgba(10, 10, 10, 0.82);
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
  --shadow-strong: 0 18px 45px rgba(0, 0, 0, 0.7);
  --hero-grad: radial-gradient(1100px 520px at 82% -12%, rgba(250,204,21,0.12), transparent 60%),
               linear-gradient(135deg, #0a0a0a 0%, #131210 100%);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  transition: background-color .35s ease, color .35s ease;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: 'Poppins', system-ui, sans-serif;
  color: var(--dark);
  line-height: 1.2;
  transition: color .35s ease;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; }

.container { width: 100%; max-width: 1140px; margin: 0 auto; padding: 0 20px; }

:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; border-radius: 6px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 13px 26px;
  border-radius: 50px;
  font-weight: 600;
  font-family: 'Poppins', sans-serif;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
  cursor: pointer;
  border: 2px solid transparent;
  font-size: 15px;
  text-align: center;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-whatsapp {
  background: #25D366; color: #fff;
  box-shadow: 0 8px 20px rgba(37, 211, 102, .35);
}
.btn-whatsapp:hover { background: #1ebe5b; }

.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover { background: var(--primary); color: var(--on-primary); }

/* ---------- Theme toggle ---------- */
.theme-toggle {
  width: 42px; height: 42px;
  flex: 0 0 auto;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--dark);
  cursor: pointer;
  font-size: 18px;
  display: grid; place-items: center;
  transition: background .2s ease, transform .2s ease, border-color .2s ease;
}
.theme-toggle:hover { background: var(--primary-soft); transform: translateY(-1px); }
.theme-toggle:active { transform: scale(.94); }

/* ---------- Header ---------- */
.header {
  position: sticky; top: 0; z-index: 100;
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: background-color .35s ease, border-color .35s ease;
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 12px; }
.logo { display: flex; align-items: center; gap: 10px; font-family: 'Poppins', sans-serif; font-size: 20px; color: var(--dark); white-space: nowrap; }
.logo strong { color: var(--primary); }
.logo-icon { font-size: 24px; }
.nav-links { display: flex; gap: 28px; }
.nav-links a { font-weight: 500; color: var(--text); transition: color .2s; }
.nav-links a:hover { color: var(--primary); }
.nav-cta { padding: 10px 20px; font-size: 14px; }
.hamburger {
  display: none; background: none; border: none;
  font-size: 26px; cursor: pointer; color: var(--dark);
  width: 42px; height: 42px; border-radius: 10px;
}
.hamburger:hover { background: var(--primary-soft); }

/* ---------- Hero ---------- */
.hero { padding: 70px 0 90px; background: var(--hero-grad); overflow: hidden; transition: background .35s ease; }
.hero-inner { display: grid; grid-template-columns: 1.1fr 1fr; gap: 50px; align-items: center; }
.badge {
  display: inline-block; background: var(--card); color: var(--primary);
  padding: 8px 16px; border-radius: 50px; font-size: 13px; font-weight: 600;
  box-shadow: var(--shadow); margin-bottom: 18px; border: 1px solid var(--border);
}
.hero h1 { font-size: 46px; margin-bottom: 18px; }
.hero h1 .accent { color: var(--primary); }
.hero p { font-size: 17px; color: var(--muted); margin-bottom: 28px; max-width: 520px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 36px; margin-top: 40px; }
.hero-stats div { display: flex; flex-direction: column; }
.hero-stats strong { font-family: 'Poppins'; font-size: 26px; color: var(--dark); }
.hero-stats span { font-size: 13px; color: var(--muted); }
.hero-image { position: relative; }
.hero-image img { width: 100%; border-radius: 24px; box-shadow: var(--shadow-strong); position: relative; z-index: 2; }
.blob {
  position: absolute; width: 92%; height: 92%;
  background: var(--primary); opacity: .18;
  border-radius: 42% 58% 55% 45%;
  top: 20px; right: -12px; z-index: 1;
  animation: float 7s ease-in-out infinite;
}
@keyframes float { 0%,100% { transform: translateY(0) rotate(0); } 50% { transform: translateY(-16px) rotate(4deg); } }

/* ---------- Sections ---------- */
.section { padding: 80px 0; }
.section-alt { background: var(--bg-alt); transition: background-color .35s ease; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 50px; }
.eyebrow { color: var(--accent); font-weight: 600; text-transform: uppercase; letter-spacing: 1px; font-size: 13px; }
.section-head h2 { font-size: 34px; margin: 10px 0 12px; }
.section-head p { color: var(--muted); }

/* ---------- Cards ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.card {
  background: var(--card); border-radius: var(--radius); padding: 32px 26px;
  box-shadow: var(--shadow); transition: transform .25s ease, box-shadow .25s ease, background-color .35s ease, border-color .35s ease;
  border: 1px solid var(--border);
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-strong); }
.card-icon {
  font-size: 34px; margin-bottom: 14px; width: 60px; height: 60px;
  display: grid; place-items: center; border-radius: 14px;
  background: var(--primary-soft);
}
.card h3 { font-size: 20px; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 15px; }

/* ---------- Features ---------- */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.feature { display: flex; gap: 14px; align-items: flex-start; }
.feature span {
  font-size: 20px; line-height: 1.4; flex: 0 0 auto;
  width: 38px; height: 38px; display: grid; place-items: center;
  background: var(--primary-soft); border-radius: 10px;
}
.feature h4 { font-size: 17px; margin-bottom: 4px; }
.feature p { color: var(--muted); font-size: 14px; }

/* ---------- Steps ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; text-align: center; }
.step { background: var(--card); border-radius: var(--radius); padding: 36px 24px; box-shadow: var(--shadow); border: 1px solid var(--border); transition: background-color .35s ease, border-color .35s ease; }
.step-num {
  width: 54px; height: 54px; background: var(--primary); color: var(--on-primary);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-family: 'Poppins'; font-size: 22px; margin: 0 auto 16px;
}
.step h4 { font-size: 19px; margin-bottom: 8px; }
.step p { color: var(--muted); font-size: 15px; }

/* ---------- CTA ---------- */
.cta {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff; text-align: center; transition: background .35s ease;
}
.cta h2 { color: #fff; font-size: 34px; margin-bottom: 12px; }
.cta p { color: #e7fbf2; margin-bottom: 28px; font-size: 17px; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.cta .btn-outline { color: #fff; border-color: #fff; }
.cta .btn-outline:hover { background: #fff; color: var(--primary-dark); }
.contact-info { margin-top: 30px; color: #ecfeff; }
.contact-info a { color: #fff; font-weight: 600; }

/* Dark CTA: keep black bg + yellow accents for contrast */
[data-theme="dark"] .cta {
  background: var(--bg-alt);
  color: var(--text);
  border-top: 3px solid var(--primary);
}
[data-theme="dark"] .cta h2 { color: var(--dark); }
[data-theme="dark"] .cta p { color: var(--muted); }
[data-theme="dark"] .cta .btn-outline { color: var(--primary); border-color: var(--primary); }
[data-theme="dark"] .cta .btn-outline:hover { background: var(--primary); color: var(--on-primary); }

/* ---------- Footer ---------- */
.footer { background: var(--bg-alt); color: var(--text); padding: 56px 0 0; border-top: 1px solid var(--border); transition: background-color .35s ease; }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; }
.footer .logo { color: var(--dark); }
.footer .logo strong { color: var(--primary); }
.footer-brand p { margin-top: 12px; color: var(--muted); font-size: 14px; max-width: 280px; }
.footer-social h4, .footer-contact h4 { color: var(--dark); margin-bottom: 14px; font-size: 16px; }
.footer-social a, .footer-contact a { display: block; color: var(--text); margin-bottom: 8px; font-size: 14px; transition: color .2s; }
.footer-social a:hover, .footer-contact a:hover { color: var(--primary); }
.footer-bottom { text-align: center; padding: 22px 0; margin-top: 40px; border-top: 1px solid var(--border); font-size: 13px; color: var(--muted); }

/* ---------- Inner page hero ---------- */
.inner-hero { padding: 58px 0 48px; background: var(--hero-grad); text-align: center; transition: background .35s ease; }
.breadcrumb { font-size: 14px; color: var(--muted); margin-bottom: 16px; }
.breadcrumb a { color: var(--primary); }
.inner-hero h1 { font-size: 40px; margin-bottom: 14px; }
.inner-hero p { color: var(--muted); max-width: 660px; margin: 0 auto 24px; font-size: 17px; }

/* ---------- Two column content ---------- */
.two-col { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: center; }
.two-col img { width: 100%; border-radius: var(--radius); box-shadow: var(--shadow-strong); }
.two-col h2 { font-size: 28px; margin-bottom: 14px; }
.two-col p { color: var(--muted); margin-bottom: 14px; }

/* ---------- Service list ---------- */
.service-list { list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 10px; }
.service-list li { background: var(--card); padding: 14px 18px; border-radius: var(--radius-sm); box-shadow: var(--shadow); display: flex; gap: 10px; align-items: center; font-weight: 500; font-size: 15px; border: 1px solid var(--border); transition: background-color .35s ease, border-color .35s ease; }
.service-list li span { color: var(--primary); font-weight: 700; }

/* ---------- FAQ ---------- */
.faq { max-width: 780px; margin: 0 auto; }
.faq-item { background: var(--card); border-radius: var(--radius-sm); margin-bottom: 12px; box-shadow: var(--shadow); overflow: hidden; border: 1px solid var(--border); transition: background-color .35s ease, border-color .35s ease; }
.faq-q { padding: 18px 22px; font-weight: 600; font-family: 'Poppins', sans-serif; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.faq-q::after { content: '+'; font-size: 22px; color: var(--primary); flex: 0 0 auto; }
.faq-item.open .faq-q::after { content: '\2212'; }
.faq-a { padding: 0 22px; max-height: 0; overflow: hidden; transition: max-height .3s ease, padding .3s ease; color: var(--muted); }
.faq-item.open .faq-a { max-height: 320px; padding: 0 22px 18px; }

/* ---------- Related links ---------- */
.related { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.related a { background: var(--card); border: 1px solid var(--border); padding: 10px 18px; border-radius: 50px; font-size: 14px; font-weight: 500; transition: all .2s; }
.related a:hover { background: var(--primary); color: var(--on-primary); border-color: var(--primary); }

/* ---------- Lead form ---------- */
.lead-form { display: grid; gap: 16px; margin-top: 8px; background: var(--card); padding: 24px; border-radius: var(--radius); border: 1px solid var(--border); transition: background-color .35s ease, border-color .35s ease; }
.lead-form label { font-weight: 600; font-family: 'Poppins', sans-serif; font-size: 14px; color: var(--dark); }
.lead-form input { width: 100%; padding: 14px 16px; border: 1px solid var(--border); border-radius: var(--radius-sm); font-size: 15px; font-family: 'Inter', sans-serif; background: var(--card-muted); color: var(--text); transition: border .2s, box-shadow .2s, background-color .35s ease, color .35s ease; }
.lead-form input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.lead-form .btn { width: 100%; justify-content: center; border: none; cursor: pointer; }
.lead-note { font-size: 13px; color: var(--muted); text-align: center; }
.form-success { background: var(--primary-soft); border: 1px solid var(--primary); color: var(--primary-darker); padding: 16px; border-radius: var(--radius-sm); text-align: center; font-weight: 600; }

/* Hero lead form (above the fold, conversion-focused) */
.hero-form { margin-top: 28px; max-width: 520px; }
.hero-form-title { font-family: 'Poppins', sans-serif; font-weight: 600; font-size: 16px; color: var(--dark); margin: 0 0 14px; }
.hero-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

/* Override inline white form backgrounds so dark mode works */
[data-theme="dark"] .lead-form { background: var(--card) !important; }
[data-theme="dark"] .cta .lead-form { background: var(--card) !important; }
[data-theme="dark"] .lead-form input { background: #1c1c1c; border-color: #333; }
[data-theme="dark"] .lead-form label { color: var(--dark) !important; }

/* ---------- Scroll reveal (progressive enhancement) ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ---------- Mobile sticky bar (call + whatsapp) ---------- */
.mobile-bar { display: none; }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-image { order: -1; }
  .cards, .features, .steps { grid-template-columns: 1fr 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .two-col { grid-template-columns: 1fr; }
  .service-list { grid-template-columns: 1fr; }
  .hero h1 { font-size: 40px; }
}

@media (max-width: 768px) {
  /* Show persistent call / whatsapp bar */
  .mobile-bar {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 200;
    display: flex; gap: 10px; padding: 8px 12px calc(8px + env(safe-area-inset-bottom));
    background: var(--header-bg);
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid var(--border);
    box-shadow: 0 -6px 24px rgba(0,0,0,.12);
  }
  body { padding-bottom: 76px; }

  .mb-btn {
    flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 2px; padding: 10px 0; border-radius: 14px;
    font-weight: 600; font-family: 'Poppins', sans-serif; font-size: 13px;
    text-decoration: none; min-height: 52px;
    transition: transform .15s ease, filter .15s ease;
  }
  .mb-btn:active { transform: scale(.97); }
  .mb-call { background: var(--primary); color: var(--on-primary); }
  .mb-wa { background: #25D366; color: #fff; }
  .mb-icon { font-size: 20px; line-height: 1; }
}

@media (max-width: 640px) {
  .nav-links {
    display: none; position: absolute; top: 72px; left: 0; right: 0;
    background: var(--card); flex-direction: column; padding: 20px;
    box-shadow: var(--shadow); border-bottom: 1px solid var(--border);
  }
  .nav-links.open { display: flex; }
  .hamburger { display: block; }
  .nav-cta { display: none; }
  .hero h1 { font-size: 32px; }
  .cards, .features, .steps { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .hero-stats { gap: 22px; }
  .hero-form { margin-top: 22px; }
  .hero-form-row { grid-template-columns: 1fr; }
  .inner-hero h1 { font-size: 28px; }
  .section { padding: 60px 0; }
  .hero { padding: 50px 0 64px; }
  .btn { width: 100%; }
  .hero-actions .btn { width: auto; flex: 1; }
  .cta-actions .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
}