/* ===================================================
   RCS România — Rezervor GPL 1750 H
   Design system: paper + charcoal panels + flame accent
   =================================================== */

/* ── Tokens ── */
:root {
  --paper: #F6F5F1;
  --paper-2: #FFFFFF;
  --paper-3: #EFEDE6;
  --ink: #14161A;
  --ink-2: #565C64;
  --ink-3: #8A8F97;
  --charcoal: #15171A;
  --charcoal-2: #1D2025;
  --charcoal-3: #2A2E35;
  --flame: #EA6A12;
  --flame-2: #C9560B;
  --flame-soft: rgba(234, 106, 18, 0.12);
  --line: #E2DFD6;
  --line-2: #D6D2C7;
  --line-dark: rgba(255, 255, 255, 0.10);

  --font-head: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Manrope", system-ui, sans-serif;
  --font-mono: "Space Mono", ui-monospace, monospace;

  --container: 1200px;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 1px 2px rgba(20, 22, 26, 0.04), 0 2px 8px rgba(20, 22, 26, 0.04);
  --shadow-md: 0 4px 12px rgba(20, 22, 26, 0.06), 0 12px 32px rgba(20, 22, 26, 0.08);
  --shadow-lg: 0 20px 60px rgba(20, 22, 26, 0.16);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

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

h1, h2, h3, h4 { font-family: var(--font-head); font-weight: 700; line-height: 1.1; letter-spacing: -0.02em; }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font-family: var(--font-head); font-weight: 600; font-size: 1rem;
  padding: 15px 26px; border-radius: var(--radius-sm);
  transition: transform .25s var(--ease), background .2s, box-shadow .25s, color .2s;
  white-space: nowrap; cursor: pointer;
}
.btn svg { width: 18px; height: 18px; }
.btn-sm { padding: 11px 18px; font-size: 0.92rem; }
.btn-primary { background: var(--flame); color: #fff; box-shadow: 0 6px 18px rgba(234,106,18,.28); }
.btn-primary:hover { background: var(--flame-2); transform: translateY(-2px); box-shadow: 0 10px 26px rgba(234,106,18,.36); }
.btn-ghost { background: transparent; color: var(--ink); border: 1.5px solid var(--line-2); }
.btn-ghost:hover { border-color: var(--ink); transform: translateY(-2px); }

/* ── Header ── */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(246, 245, 241, 0.82);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.brand { font-family: var(--font-head); font-weight: 700; font-size: 1.55rem; letter-spacing: -0.02em; color: var(--ink); line-height: 1.1; display: inline-flex; align-items: center; }
.brand span { color: var(--flame); }
.main-nav { display: flex; gap: 30px; margin-left: auto; margin-right: 8px; }
.main-nav a {
  font-family: var(--font-head); font-weight: 500; font-size: 0.96rem; color: var(--ink-2);
  position: relative; transition: color .2s;
}
.main-nav a::after {
  content: ""; position: absolute; left: 0; bottom: -6px; width: 0; height: 2px;
  background: var(--flame); transition: width .25s var(--ease);
}
.main-nav a:hover { color: var(--ink); }
.main-nav a:hover::after { width: 100%; }
.header-actions { display: flex; align-items: center; gap: 14px; }

.menu-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.menu-toggle span { width: 22px; height: 2px; background: var(--ink); border-radius: 2px; transition: .3s var(--ease); }
.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Hero ── */
.hero { position: relative; padding: 72px 0 40px; overflow: hidden; }
.hero-grid {
  position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 30%, transparent 75%);
  mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 30%, transparent 75%);
}
.hero-inner { position: relative; display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--font-mono); font-size: 0.78rem; font-weight: 700; letter-spacing: 0.04em;
  text-transform: uppercase; color: var(--flame-2);
  background: var(--flame-soft); padding: 7px 14px; border-radius: 100px; margin-bottom: 22px;
}
.eyebrow-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--flame); box-shadow: 0 0 0 4px rgba(234,106,18,.18); }
.hero-title { font-size: clamp(2.4rem, 5.2vw, 4rem); margin-bottom: 20px; }
.hero-title .accent { color: var(--flame); }
.hero-sub { font-size: 1.18rem; color: var(--ink-2); max-width: 30em; margin-bottom: 32px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 34px; }

.hero-meta { display: flex; align-items: center; gap: 26px; flex-wrap: wrap; }
.price-chip {
  display: flex; flex-direction: column; gap: 2px;
  background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 12px 18px; box-shadow: var(--shadow-sm);
}
.price-chip-label { font-family: var(--font-mono); font-size: 0.66rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--ink-3); }
.price-chip-value { font-family: var(--font-head); font-weight: 700; font-size: 1.15rem; color: var(--ink); }
.hero-trust { display: flex; gap: 18px; flex-wrap: wrap; }
.hero-trust li {
  font-size: 0.9rem; font-weight: 600; color: var(--ink-2); position: relative; padding-left: 18px;
}
.hero-trust li::before {
  content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 8px; height: 8px; border-radius: 50%; background: var(--flame);
}

/* ── Bandiere RO / IT (CSS, no emoji) ── */
.flag {
  display: inline-block; width: 26px; height: 17px; border-radius: 3px;
  box-shadow: 0 1px 2px rgba(0,0,0,.18); border: 1px solid rgba(0,0,0,.08);
  vertical-align: middle; flex: 0 0 auto;
}
.flag-ro { background: linear-gradient(to right, #002B7F 0 33.33%, #FCD116 33.33% 66.66%, #CE1126 66.66% 100%); }
.flag-it { background: linear-gradient(to right, #008C45 0 33.33%, #F4F5F0 33.33% 66.66%, #CD212A 66.66% 100%); }

.made-in {
  display: inline-flex; align-items: center; gap: 12px;
  background: var(--paper-2); border: 1px solid var(--line); border-radius: 12px;
  padding: 11px 18px; box-shadow: var(--shadow-sm);
  font-size: 0.92rem; color: var(--ink-2); line-height: 1.35;
}
.made-in strong { color: var(--ink); font-weight: 700; }
.made-in-text { flex: 1; }
.made-in .flag { width: 28px; height: 19px; }

/* Product stage (dark panel — black-bg image blends in) */
.hero-visual { position: relative; }
.product-stage {
  position: relative; border-radius: var(--radius); overflow: hidden;
  background: radial-gradient(120% 90% at 50% 25%, #23262C 0%, var(--charcoal) 55%, #000 100%);
  box-shadow: var(--shadow-lg); aspect-ratio: 4 / 5; display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--charcoal-3);
}
.product-stage img { width: 92%; height: auto; object-fit: contain; filter: drop-shadow(0 30px 40px rgba(0,0,0,.5)); position: relative; z-index: 2; }
.stage-badge {
  position: absolute; top: 18px; left: 18px; z-index: 3;
  font-family: var(--font-mono); font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em;
  color: #fff; background: rgba(234,106,18,.92); padding: 6px 12px; border-radius: 6px;
}
.stage-glow {
  position: absolute; left: 50%; top: 42%; transform: translate(-50%, -50%);
  width: 80%; height: 55%; z-index: 1;
  background: radial-gradient(ellipse, rgba(234,106,18,.16), transparent 70%); filter: blur(20px);
}

/* ── Spec band ── */
.spec-band { background: var(--charcoal); color: #fff; }
.spec-band-inner { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; padding: 30px 24px; }
.spec-stat { display: flex; flex-direction: column; gap: 4px; text-align: center; position: relative; }
.spec-stat:not(:last-child)::after {
  content: ""; position: absolute; right: -6px; top: 50%; transform: translateY(-50%);
  width: 1px; height: 60%; background: var(--line-dark);
}
.spec-num { font-family: var(--font-head); font-weight: 700; font-size: 1.7rem; color: #fff; }
.spec-num .spec-unit { font-size: 1rem; color: var(--flame); margin-left: 3px; }
.spec-cap { font-family: var(--font-mono); font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.1em; color: rgba(255,255,255,.55); }

/* ── Sections ── */
.section { padding: 88px 0; }
.section-alt { background: var(--paper-3); }
.section-dark { background: var(--charcoal); color: #fff; }
.section-head { max-width: 680px; margin-bottom: 52px; }
.section-label {
  display: inline-block; font-family: var(--font-mono); font-size: 0.74rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.16em; color: var(--flame-2); margin-bottom: 14px;
}
.section-label-light { color: var(--flame); }
.section-title { font-size: clamp(1.8rem, 3.6vw, 2.6rem); margin-bottom: 14px; }
.section-lead { font-size: 1.12rem; color: var(--ink-2); }
.section-dark .section-lead { color: rgba(255,255,255,.7); }

/* ── Product layout ── */
.product-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.product-figure-stage {
  border-radius: var(--radius); overflow: hidden; aspect-ratio: 1 / 1;
  background: radial-gradient(120% 90% at 50% 30%, #23262C 0%, var(--charcoal) 55%, #000 100%);
  display: flex; align-items: center; justify-content: center; box-shadow: var(--shadow-md);
  border: 1px solid var(--charcoal-3);
}
.product-figure-stage img { width: 86%; filter: drop-shadow(0 24px 32px rgba(0,0,0,.5)); }
.product-figure-note { font-size: 0.86rem; color: var(--ink-3); margin-top: 12px; text-align: center; }
.product-desc { font-size: 1.1rem; color: var(--ink-2); margin-bottom: 26px; }
.product-desc strong { color: var(--ink); }

.spec-table { width: 100%; border-collapse: collapse; margin-bottom: 30px; }
.spec-table tr { border-bottom: 1px solid var(--line); }
.spec-table th {
  text-align: left; font-family: var(--font-mono); font-size: 0.74rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-3);
  padding: 14px 0; width: 42%; vertical-align: top;
}
.spec-table td { padding: 14px 0; font-weight: 600; color: var(--ink); }
.product-detail-cta { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.product-detail-price { font-family: var(--font-head); font-weight: 700; color: var(--ink); font-size: 1.05rem; }

/* ── Cards grid (avantaje) ── */
.cards-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.feature-card {
  background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 24px; box-shadow: var(--shadow-sm); transition: transform .3s var(--ease), box-shadow .3s, border-color .3s;
}
.feature-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: var(--line-2); }
.feature-icon {
  width: 50px; height: 50px; border-radius: 12px; display: flex; align-items: center; justify-content: center;
  background: var(--flame-soft); color: var(--flame-2); margin-bottom: 18px;
}
.feature-icon svg { width: 26px; height: 26px; }
.feature-card h3 { font-size: 1.18rem; margin-bottom: 9px; }
.feature-card p { font-size: 0.96rem; color: var(--ink-2); }

/* ── Use cases ── */
.use-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.use-card {
  position: relative; background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px 28px; overflow: hidden; transition: transform .3s var(--ease), box-shadow .3s;
}
.use-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.use-num {
  font-family: var(--font-mono); font-weight: 700; font-size: 0.85rem; color: var(--flame);
  display: block; margin-bottom: 16px;
}
.use-card h3 { font-size: 1.25rem; margin-bottom: 10px; }
.use-card p { color: var(--ink-2); font-size: 0.98rem; }
.use-card::after {
  content: ""; position: absolute; right: -30px; bottom: -30px; width: 90px; height: 90px;
  border-radius: 50%; background: var(--flame-soft); transition: transform .4s var(--ease);
}
.use-card:hover::after { transform: scale(1.6); }

/* ── Steps (proces, dark) ── */
.steps { display: flex; align-items: stretch; gap: 8px; justify-content: space-between; }
.step {
  flex: 1; background: var(--charcoal-2); border: 1px solid var(--charcoal-3); border-radius: var(--radius);
  padding: 30px 26px;
}
.step-index { font-family: var(--font-mono); font-weight: 700; font-size: 1.5rem; color: var(--flame); display: block; margin-bottom: 16px; }
.step h3 { font-size: 1.25rem; margin-bottom: 10px; color: #fff; }
.step p { color: rgba(255,255,255,.65); font-size: 0.96rem; }
.step-arrow { display: flex; align-items: center; color: var(--charcoal-3); flex: 0 0 auto; }
.step-arrow svg { width: 26px; height: 26px; }

/* ── Contact ── */
.contact-layout { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 40px; align-items: start; }
.contact-item { display: flex; gap: 16px; margin-bottom: 26px; }
.contact-item-icon {
  flex: 0 0 auto; width: 46px; height: 46px; border-radius: 12px; display: flex; align-items: center; justify-content: center;
  background: var(--paper-2); border: 1px solid var(--line); color: var(--flame-2);
}
.contact-item-icon svg { width: 22px; height: 22px; }
.contact-item h4 { font-size: 0.78rem; font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.1em; color: var(--ink-3); margin-bottom: 4px; font-weight: 700; }
.contact-item a, .contact-item p { font-size: 1.04rem; color: var(--ink); font-weight: 600; }
.contact-item a:hover { color: var(--flame-2); }
.contact-note { margin-top: 8px; padding: 16px 18px; background: var(--flame-soft); border-radius: var(--radius-sm); }
.contact-note p { font-size: 0.92rem; color: var(--flame-2); font-weight: 600; }

.contact-form-wrap { background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow-md); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-family: var(--font-head); font-weight: 600; font-size: 0.9rem; margin-bottom: 8px; }
.form-group input, .form-group textarea {
  width: 100%; padding: 13px 15px; font-family: var(--font-body); font-size: 1rem; color: var(--ink);
  background: var(--paper); border: 1.5px solid var(--line-2); border-radius: var(--radius-sm); transition: border-color .2s, box-shadow .2s;
}
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--flame); box-shadow: 0 0 0 4px var(--flame-soft); }
.form-group textarea { resize: vertical; min-height: 110px; }
.form-footer { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.form-note { font-size: 0.84rem; color: var(--ink-3); }
.form-success {
  display: flex; align-items: center; gap: 12px; margin-top: 20px; padding: 16px 18px;
  background: rgba(22, 163, 74, .1); border: 1px solid rgba(22, 163, 74, .3); border-radius: var(--radius-sm);
  color: #15803d; font-weight: 600; font-size: 0.96rem;
}
.form-success svg { width: 24px; height: 24px; flex: 0 0 auto; }
.form-error { margin-top: 20px; padding: 14px 18px; background: rgba(220,38,38,.08); border: 1px solid rgba(220,38,38,.25); border-radius: var(--radius-sm); color: #b91c1c; font-weight: 600; font-size: 0.92rem; }

/* ── Footer ── */
.site-footer { background: var(--charcoal); color: rgba(255,255,255,.7); padding: 60px 0 28px; }
.footer-inner { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 36px; padding-bottom: 40px; border-bottom: 1px solid var(--line-dark); }
.footer-logo { width: 150px; height: auto; border-radius: 10px; margin-bottom: 18px; }
.footer-wordmark { font-family: var(--font-head); font-weight: 700; font-size: 1.7rem; letter-spacing: -0.02em; color: #fff; margin-bottom: 16px; }
.footer-wordmark span { color: var(--flame); }
.footer-brand p { font-size: 0.94rem; max-width: 34ch; }
.footer-col h4 { color: #fff; font-size: 0.78rem; font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.12em; margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 11px; font-size: 0.94rem; line-height: 1.5; }
.footer-col a:hover { color: var(--flame); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 24px; flex-wrap: wrap; gap: 10px; }
.footer-bottom p { font-size: 0.86rem; color: rgba(255,255,255,.5); }
.footer-made { font-family: var(--font-mono); letter-spacing: 0.05em; }

/* ── WhatsApp float ── */
.whatsapp-float {
  position: fixed; right: 22px; bottom: 22px; z-index: 90; width: 56px; height: 56px; border-radius: 50%;
  background: #25D366; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 24px rgba(37,211,102,.4); transition: transform .25s var(--ease);
}
.whatsapp-float:hover { transform: scale(1.08); }
.whatsapp-float svg { width: 30px; height: 30px; fill: #fff; }

/* ── Reveal animation ── */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }
.reveal-delay-1 { transition-delay: .1s; }
.reveal-delay-2 { transition-delay: .2s; }
.reveal-delay-3 { transition-delay: .3s; }

/* ── Responsive ── */
@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; gap: 36px; }
  .hero-visual { max-width: 460px; margin: 0 auto; width: 100%; }
  .product-layout { grid-template-columns: 1fr; gap: 32px; }
  .product-figure-stage { aspect-ratio: 4/3; }
  .contact-layout { grid-template-columns: 1fr; gap: 32px; }
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 28px; }
  .steps { flex-direction: column; }
  .step-arrow { transform: rotate(90deg); align-self: center; }
}

@media (max-width: 680px) {
  body { font-size: 16px; }
  .site-header { background: var(--paper); box-shadow: 0 1px 0 var(--line); backdrop-filter: none; -webkit-backdrop-filter: none; }
  .brand { font-size: 1.5rem; }
  .main-nav {
    position: fixed; inset: 72px 0 auto 0; flex-direction: column; gap: 0; background: var(--paper);
    border-bottom: 1px solid var(--line); padding: 8px 24px 20px; margin: 0;
    transform: translateY(-120%); transition: transform .35s var(--ease), visibility .35s; box-shadow: var(--shadow-md);
    visibility: hidden;
  }
  .main-nav.open { transform: translateY(0); visibility: visible; }
  .main-nav a { padding: 14px 0; border-bottom: 1px solid var(--line); width: 100%; }
  .main-nav a::after { display: none; }
  .menu-toggle { display: flex; }
  .header-actions .btn-sm { display: none; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta .btn { width: 100%; }
  .hero-trust { flex-direction: column; gap: 11px; }
  .spec-band-inner { grid-template-columns: repeat(2, 1fr); gap: 20px 14px; }
  .spec-stat::after { display: none; }
  .spec-stat:last-child { grid-column: 1 / -1; }
  .spec-num { font-size: 1.4rem; }
  .cards-grid { grid-template-columns: 1fr; }
  .use-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .section { padding: 60px 0; }
  .hero { padding: 48px 0 30px; }
}

@media (max-width: 420px) {
  .container { padding: 0 18px; }
  .hero-title { font-size: 2.15rem; }
  .section-title { font-size: 1.6rem; }
  .spec-num { font-size: 1.25rem; }
}

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