/* ===== VARIABLES ===== */
:root {
  --orange: #f39200;
  --orange-light: #ffb84d;
  --orange-soft: #ffe7c2;
  --blue: #4ba9dd;
  --blue-light: #8fd0f0;
  --blue-soft: #d9f0fb;
  --navy: #2f3b4c;
  --gray: #5a6573;
  --gray-light: #8a93a0;
  --bg: #ffffff;
  --bg-soft: #f6fafd;
  --bg-beach: linear-gradient(180deg, #bfe6fb 0%, #e9f6fe 45%, #fdf3e3 100%);
  --shadow: 0 18px 50px rgba(47, 59, 76, 0.12);
  --shadow-sm: 0 8px 24px rgba(47, 59, 76, 0.10);
  --radius: 20px;
  --radius-sm: 12px;
  --font: 'Poppins', system-ui, -apple-system, sans-serif;
  --maxw: 1140px;
}

/* ===== RESET ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--navy);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }

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

/* ===== LOGO ===== */
.logo {
  font-weight: 700;
  font-size: 1.55rem;
  color: var(--orange);
  letter-spacing: -0.5px;
}
.logo span { color: var(--navy); }
.logo sup { font-size: 0.55em; color: var(--gray-light); font-weight: 500; }
.logo-light span { color: #fff; }
.logo-light { color: var(--orange-light); }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 600; font-size: 1rem;
  padding: 14px 28px; border-radius: 100px;
  cursor: pointer; border: none; transition: transform .15s ease, box-shadow .2s ease, background .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--orange); color: #fff; box-shadow: 0 10px 24px rgba(243,146,0,.35); }
.btn-primary:hover { background: #e08400; }
.btn-ghost { background: transparent; color: var(--navy); border: 2px solid rgba(47,59,76,.18); }
.btn-ghost:hover { border-color: var(--orange); color: var(--orange); }
.btn-light { background: #fff; color: var(--orange); box-shadow: var(--shadow-sm); }
.btn-sm { padding: 10px 20px; font-size: .92rem; }
.btn-block { width: 100%; }

/* ===== HEADER ===== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(47,59,76,.07);
}
.header-inner { display: flex; align-items: center; gap: 24px; height: 72px; }
.nav { display: flex; gap: 28px; margin-left: auto; }
.nav a { font-weight: 500; color: var(--gray); font-size: .96rem; transition: color .2s; }
.nav a:hover { color: var(--orange); }
.header-inner .btn-primary { margin-left: 8px; }
.burger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; margin-left: auto; }
.burger span { width: 26px; height: 3px; background: var(--navy); border-radius: 3px; transition: .3s; }

/* ===== HERO ===== */
.hero { background: var(--bg-beach); padding: 56px 0 80px; overflow: hidden; }
.hero-inner { display: grid; grid-template-columns: 1.1fr 1fr; align-items: center; gap: 40px; }
.hero-title { font-size: 3rem; font-weight: 700; color: var(--navy); letter-spacing: -1px; line-height: 1.08; margin-bottom: 18px; }
.hero-lead { font-size: 1.1rem; color: var(--gray); max-width: 480px; }
.hero-actions { display: flex; gap: 14px; margin: 28px 0 22px; flex-wrap: wrap; }
.hero-badges { display: flex; flex-wrap: wrap; gap: 10px 18px; }
.hero-badges li { font-size: .88rem; font-weight: 500; color: var(--gray); padding-left: 22px; position: relative; }
.hero-badges li::before { content: "✓"; position: absolute; left: 0; color: var(--orange); font-weight: 700; }

/* ===== HERO IMAGE ===== */
.hero-image {
  width: 100%; max-width: 520px; border-radius: var(--radius);
  box-shadow: 0 30px 70px rgba(47, 59, 76, 0.28);
}

/* ===== DEVICE (CSS mockup of the brush) ===== */
.hero-visual { display: flex; flex-direction: column; align-items: center; }
.device { position: relative; filter: drop-shadow(0 24px 40px rgba(47,59,76,.22)); }
.device-head {
  width: 120px; height: 120px; border-radius: 50%;
  background: radial-gradient(circle at 40% 35%, #fff 0%, #f0e3d2 60%, #e3d2bb 100%);
  border: 6px solid #fff; margin: 0 auto;
  box-shadow: inset 0 -6px 12px rgba(0,0,0,.06);
}
.device-neck { width: 46px; height: 26px; background: #e9edf1; margin: -4px auto 0; border-radius: 0 0 8px 8px; }
.device-body {
  width: 120px; padding: 18px 0 26px; margin: 0 auto;
  background: linear-gradient(180deg, #ffffff 0%, #f4f7fa 100%);
  border-radius: 30px 30px 26px 26px;
  border: 1px solid #eef2f6;
}
.device-controls { display: flex; flex-direction: column; align-items: center; gap: 7px; }
.ctrl-btn { width: 34px; height: 34px; border-radius: 50%; background: var(--orange); box-shadow: 0 4px 10px rgba(243,146,0,.4); position: relative; }
.ctrl-btn::after { content: "☀"; position: absolute; inset: 0; display: grid; place-items: center; color: #fff; font-size: 16px; }
.ctrl-led { width: 22px; height: 6px; border-radius: 4px; background: var(--blue-light); }
.ctrl-led:nth-of-type(3) { background: var(--orange-light); }
.device-window {
  width: 70px; height: 110px; margin: 14px auto 0;
  background: rgba(255,255,255,.7); border-radius: 40px;
  border: 2px solid #e7edf2; display: flex; gap: 4px; padding: 8px; overflow: hidden;
}
.tank { flex: 1; border-radius: 30px; }
.tank-orange { background: linear-gradient(180deg, transparent 22%, var(--orange-light) 22%, var(--orange) 100%); }
.tank-blue { background: linear-gradient(180deg, transparent 12%, var(--blue-light) 12%, var(--blue) 100%); }
.device-base {
  width: 150px; height: 40px; margin: 6px auto 0;
  background: linear-gradient(180deg, #fff 0%, #f1f4f7 100%);
  border-radius: 0 0 18px 18px; border: 1px solid #eef2f6;
  border-bottom: 6px solid var(--orange);
}
.reservoir-tags { display: flex; gap: 14px; margin-top: 26px; }
.tag { font-size: .8rem; font-weight: 600; padding: 7px 16px; border-radius: 100px; color: #fff; }
.tag-orange { background: var(--orange); }
.tag-blue { background: var(--blue); }

/* ===== SECTION TITLES ===== */
.section-title { font-size: 2.1rem; font-weight: 700; text-align: center; letter-spacing: -.5px; }
.section-title strong { color: var(--orange); }
.section-sub { text-align: center; color: var(--gray); max-width: 560px; margin: 12px auto 0; }
.eyebrow { display: inline-block; font-weight: 700; text-transform: uppercase; letter-spacing: 1.5px; font-size: .8rem; color: var(--orange); margin-bottom: 10px; }
.eyebrow-light { color: var(--blue-light); }

/* ===== FEATURES ===== */
.features { padding: 90px 0; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; margin-top: 48px; }
.feature-card {
  background: var(--bg-soft); border: 1px solid #eef3f7; border-radius: var(--radius);
  padding: 34px 28px; transition: transform .2s ease, box-shadow .2s ease;
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.feature-icon {
  width: 64px; height: 64px; border-radius: 18px;
  background: var(--orange-soft); display: grid; place-items: center; margin-bottom: 18px;
}
.feature-icon svg { width: 36px; height: 36px; fill: none; stroke: var(--orange); stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.feature-card h3 { font-size: 1.2rem; margin-bottom: 8px; }
.feature-card p { color: var(--gray); font-size: .96rem; }
.feature-highlight { background: linear-gradient(160deg, #fff7ec 0%, #eaf6fd 100%); border-color: #ffe2b8; }
.feature-highlight .feature-icon { background: var(--blue-soft); }
.feature-highlight .feature-icon svg { stroke: var(--blue); }

/* ===== RESERVOIR ===== */
.reservoir { background: var(--bg-soft); padding: 90px 0; }
.reservoir-inner { display: grid; grid-template-columns: 1fr 1.1fr; align-items: center; gap: 56px; }
.tanks-big { display: flex; gap: 24px; justify-content: center; }
.big-tank {
  width: 130px; background: #fff; border-radius: 24px; padding: 16px;
  box-shadow: var(--shadow-sm); text-align: center;
}
.big-tank .liquid { display: block; height: 200px; border-radius: 16px; margin-bottom: 12px; }
.liquid.orange { background: linear-gradient(180deg, var(--orange-soft) 0%, var(--orange) 100%); }
.liquid.blue { background: linear-gradient(180deg, var(--blue-soft) 0%, var(--blue) 100%); }
.big-tank p { font-weight: 600; font-size: .95rem; }
.reservoir-text h2 { font-size: 2rem; line-height: 1.2; margin-bottom: 16px; }
.reservoir-text h2 em { color: var(--orange); font-style: normal; }
.reservoir-text p { color: var(--gray); margin-bottom: 22px; }
.check-list li { padding-left: 30px; position: relative; margin-bottom: 12px; font-weight: 500; }
.check-list li::before {
  content: "✓"; position: absolute; left: 0; top: 0;
  width: 20px; height: 20px; background: var(--orange); color: #fff;
  border-radius: 50%; font-size: .72rem; display: grid; place-items: center;
}

/* ===== TIPS / EMBOUTS ===== */
.tips { padding: 90px 0; }
.tips-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; margin-top: 48px; max-width: 760px; margin-left: auto; margin-right: auto; }
.tip-card { background: #fff; border-radius: var(--radius); padding: 40px 32px; text-align: center; border: 1px solid #eef3f7; box-shadow: var(--shadow-sm); }
.tip-puck { width: 120px; height: 120px; border-radius: 50%; margin: 0 auto 22px; display: grid; place-items: center; }
.tip-puck span { width: 86px; height: 86px; border-radius: 50%; display: block; }
.tip-orange .tip-puck { background: var(--orange-soft); }
.tip-orange .tip-puck span { background: radial-gradient(circle at 40% 35%, var(--orange-light), var(--orange)); box-shadow: inset 0 -6px 14px rgba(0,0,0,.12); }
.tip-blue .tip-puck { background: var(--blue-soft); }
.tip-blue .tip-puck span { background: radial-gradient(circle at 40% 35%, var(--blue-light), var(--blue)); box-shadow: inset 0 -6px 14px rgba(0,0,0,.12); }
.tip-card h3 { font-size: 1.25rem; margin-bottom: 10px; }
.tip-card p { color: var(--gray); }

/* ===== APP ===== */
.app { background: linear-gradient(160deg, var(--navy) 0%, #1f2a38 100%); color: #fff; padding: 90px 0; }
.app-inner { display: grid; grid-template-columns: 1.1fr 1fr; align-items: center; gap: 56px; }
.app-text h2 { font-size: 2rem; line-height: 1.2; margin-bottom: 16px; }
.app-text p { color: #c2cdd9; margin-bottom: 26px; }
.steps li { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; font-weight: 500; }
.steps li span { width: 30px; height: 30px; border-radius: 50%; background: var(--orange); color: #fff; display: grid; place-items: center; font-weight: 700; flex-shrink: 0; }
.app-visual { display: flex; justify-content: center; }
.phone { width: 250px; background: #0f1722; border-radius: 38px; padding: 14px; box-shadow: 0 30px 60px rgba(0,0,0,.45); position: relative; border: 2px solid #2a3849; }
.phone-notch { width: 110px; height: 22px; background: #0f1722; border-radius: 0 0 14px 14px; margin: 0 auto 10px; }
.phone-screen { background: linear-gradient(170deg, #f6fafd, #e9f4fb); border-radius: 26px; padding: 26px 22px; color: var(--navy); text-align: center; }
.phone-status { font-size: .8rem; text-transform: uppercase; letter-spacing: 1px; color: var(--gray); }
.gauge { width: 120px; height: 120px; border-radius: 50%; margin: 16px auto; background: conic-gradient(var(--orange) var(--p,72%), #e3eaf0 0); display: grid; place-items: center; position: relative; }
.gauge span { width: 88px; height: 88px; border-radius: 50%; background: #fff; display: grid; place-items: center; font-weight: 700; font-size: 1.4rem; color: var(--orange); }
.gauge span::after { content: "72"; }
.phone-level { font-weight: 600; color: var(--blue); margin-bottom: 16px; }
.phone-tips { display: flex; flex-direction: column; gap: 8px; }
.ptip { background: #fff; border-radius: 12px; padding: 10px 14px; font-size: .82rem; text-align: left; box-shadow: 0 4px 10px rgba(47,59,76,.06); }
.ptip b { color: var(--orange); margin-right: 6px; }

/* ===== PRICING ===== */
.pricing { padding: 90px 0; background: var(--bg-soft); }
.price-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; margin-top: 48px; align-items: stretch; max-width: 760px; margin-left: auto; margin-right: auto; }
.price-card {
  background: #fff; border: 1px solid #eef3f7; border-radius: var(--radius);
  padding: 36px 30px; display: flex; flex-direction: column; position: relative;
}
.price-card h3 { font-size: 1.2rem; }
.price { margin: 14px 0 22px; }
.price .amount { display: block; font-size: 2.2rem; font-weight: 700; color: var(--navy); }
.price .period { font-size: .85rem; color: var(--gray-light); }
.price-card ul { margin-bottom: 26px; flex: 1; }
.price-card li { padding-left: 26px; position: relative; margin-bottom: 10px; color: var(--gray); font-size: .95rem; }
.price-card li::before { content: "✓"; position: absolute; left: 0; color: var(--orange); font-weight: 700; }
.price-featured { border: 2px solid var(--orange); box-shadow: var(--shadow); transform: translateY(-8px); }
.price-featured .amount { color: var(--orange); }
.ribbon { position: absolute; top: -14px; left: 50%; transform: translateX(-50%); background: var(--orange); color: #fff; font-size: .8rem; font-weight: 600; padding: 6px 18px; border-radius: 100px; white-space: nowrap; }
.price-note { text-align: center; color: var(--gray-light); font-size: .85rem; margin-top: 26px; }

/* ===== FINAL CTA ===== */
.final-cta { background: linear-gradient(120deg, var(--orange) 0%, var(--orange-light) 100%); padding: 70px 0; text-align: center; color: #fff; }
.final-cta h2 { font-size: 2rem; margin-bottom: 26px; }

/* ===== FOOTER ===== */
.site-footer { background: var(--navy); color: #c2cdd9; padding: 56px 0 30px; }
.footer-inner { display: flex; flex-wrap: wrap; gap: 24px; align-items: center; justify-content: space-between; }
.footer-brand p { font-size: .9rem; margin-top: 6px; }
.footer-nav { display: flex; gap: 22px; flex-wrap: wrap; }
.footer-nav a { font-size: .92rem; transition: color .2s; }
.footer-nav a:hover { color: var(--orange-light); }
.footer-legal { width: 100%; text-align: center; font-size: .82rem; color: var(--gray-light); border-top: 1px solid rgba(255,255,255,.08); padding-top: 22px; margin-top: 10px; }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .nav { display: none; }
  .nav.open { display: flex; flex-direction: column; position: absolute; top: 72px; left: 0; right: 0; background: #fff; padding: 20px 24px; gap: 16px; box-shadow: var(--shadow-sm); }
  .header-inner > .btn-primary { display: none; }
  .burger { display: flex; }
  .hero-inner, .reservoir-inner, .app-inner { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
  .feature-grid, .price-grid { grid-template-columns: 1fr; }
  .tips-grid { grid-template-columns: 1fr; }
  .price-featured { transform: none; }
  .hero-title { font-size: 2.6rem; }
  .hero-tagline { font-size: 1.4rem; }
}
@media (max-width: 520px) {
  .section-title { font-size: 1.7rem; }
  .hero { padding: 36px 0 56px; }
}