/* OPTIMIZED BUILD */
/* ==============================
   Fuel Oil - HELIX Prototype (Logo Palette)
   ============================== */

:root {
  --header-height: 76px;
  --logo-size: 120px;
  --bg: #f6f3ee;
  --bg-soft: #ffffff;
  --surface: rgba(255, 255, 255, 0.92);
  --surface-strong: rgba(255, 255, 255, 0.98);
  --text: #2b2323;
  --text-muted: #5f4c4c;
  --brand: #c51123;
  --brand-strong: #ef1f2f;
  --brand-dark: #8f0d1a;
  --accent: #ffffff;
  --line: rgba(197, 17, 35, 0.22);

  --font-display: 'Orbitron', sans-serif;
  --font-body: 'Rajdhani', sans-serif;

  --space-1: 0.5rem;
  --space-2: 0.75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;

  --radius-sm: 0.5rem;
  --radius-md: 0.85rem;
  --radius-lg: 1.25rem;

  --shadow-soft: 0 10px 24px rgba(116, 32, 40, 0.16);
  --shadow-strong: 0 18px 40px rgba(116, 32, 40, 0.22);
  --glow-red: 0 0 18px rgba(239, 31, 47, 0.28);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-body);
  background: linear-gradient(180deg, #ffffff 0%, #fbf9f6 100%);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: repeating-radial-gradient(
    ellipse 170% 92% at 50% 118%,
    rgba(197, 17, 35, 0.22) 0 2px,
    transparent 2px 24px
  );
  mask-image: linear-gradient(to top, rgba(0, 0, 0, 0.45) 8%, rgba(0, 0, 0, 0.25) 48%, transparent 82%);
  z-index: 0;
}

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

a {
  color: inherit;
}

main {
  position: relative;
  z-index: 10;
}

.container {
  width: min(1120px, 92%);
  margin-inline: auto;
}

.section {
  padding: var(--space-6) 0;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--brand-dark);
  font-size: 0.78rem;
  font-weight: 700;
  margin: 0 0 var(--space-2);
  text-shadow: var(--glow-red);
}

h1,
h2,
h3 {
  line-height: 1.15;
  margin-top: 0;
}

h1,
h2 {
  font-family: var(--font-display);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

p {
  margin: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-height);
  backdrop-filter: blur(12px);
  background: rgba(255, 255, 255, 0.84);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.brand {
  display: inline-flex;
  align-items: center;
  height: 100%;
}

.brand img {
  width: var(--logo-size);
  height: auto;
  max-height: calc(var(--header-height) - 8px);
  object-fit: contain;
  display: block;
}


.main-nav {
  display: none;
  gap: var(--space-4);
}

.main-nav a {
  text-decoration: none;
  font-weight: 700;
  color: var(--text-muted);
  transition: color 0.2s ease;
}

.main-nav a:hover {
  color: var(--brand-dark);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  border: 0;
  cursor: pointer;
  padding: 0.72rem 1.05rem;
  border-radius: 999px;
  font-weight: 700;
  font-family: var(--font-body);
  letter-spacing: 0.03em;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(120deg, var(--brand), var(--brand-strong));
  color: white;
  box-shadow: var(--glow-red);
}

.btn-primary:hover {
  box-shadow: 0 0 26px rgba(239, 31, 47, 0.45);
}

.btn-ghost {
  border: 1px solid rgba(197, 17, 35, 0.42);
  color: var(--brand-dark);
  background: rgba(255, 255, 255, 0.76);
}

.hero {
  padding: 4rem 0 3rem;
}

.hero-grid {
  display: grid;
  gap: var(--space-5);
}

.hero-copy h1 {
  font-size: clamp(2.25rem, 7vw, 4.4rem);
  margin-bottom: var(--space-3);
  color: #301f1f;
  text-shadow: 0 0 18px rgba(239, 31, 47, 0.25);
}

.hero-text {
  color: var(--text-muted);
  max-width: 52ch;
}

.hero-actions {
  margin-top: var(--space-4);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.hero-card {
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.95), rgba(251, 244, 244, 0.95));
  border: 1px solid rgba(197, 17, 35, 0.25);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-soft);
}

.hero-card h2 {
  margin-bottom: var(--space-2);
  color: #3a2222;
}

.hero-card p {
  color: var(--text-muted);
  margin-bottom: var(--space-3);
}

.hero-card span {
  display: inline-block;
  background: rgba(239, 31, 47, 0.12);
  color: var(--brand-dark);
  box-shadow: var(--glow-red);
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
}

.section-head {
  margin-bottom: var(--space-4);
}

.section-head h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  color: #362323;
}

.items-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.item-card {
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.98), rgba(249, 241, 241, 0.96));
  border: 1px solid rgba(197, 17, 35, 0.24);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.item-card:hover {
  transform: translateY(-6px);
  border-color: rgba(239, 31, 47, 0.6);
  box-shadow: var(--shadow-strong), var(--glow-red);
}

.item-card img {
  width: 100%;
  height: 290px;
  object-fit: cover;
  filter: saturate(1.05) contrast(1.05);
}

.item-body {
  padding: var(--space-4);
  display: grid;
  gap: var(--space-2);
}

.item-card h3 {
  margin: 0;
  font-size: 1.2rem;
  color: #392424;
}

.item-card p {
  color: var(--text-muted);
}

.price {
  color: var(--brand);
  text-shadow: var(--glow-red);
  font-weight: 800;
}

.about-box {
  background: linear-gradient(140deg, rgba(197, 17, 35, 0.12), rgba(255, 255, 255, 0.86));
  border: 1px solid rgba(197, 17, 35, 0.26);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}

.about-box h2 {
  margin-bottom: var(--space-2);
  color: #3a2222;
}

.about-box p {
  color: var(--text-muted);
}

.contact-grid {
  display: grid;
  gap: var(--space-5);
}

.contact-info ul {
  margin: var(--space-3) 0 0;
  padding-left: 1.1rem;
  color: var(--text-muted);
  display: grid;
  gap: 0.35rem;
}

.contact-info a {
  color: var(--brand-dark);
}

.contact-form {
  background: var(--surface);
  border: 1px solid rgba(197, 17, 35, 0.28);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  display: grid;
  gap: var(--space-2);
  box-shadow: var(--shadow-soft);
}

.contact-form label {
  font-weight: 700;
  font-size: 0.92rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid rgba(197, 17, 35, 0.2);
  background: rgba(255, 255, 255, 0.98);
  border-radius: 0.7rem;
  color: var(--text);
  font: inherit;
  padding: 0.75rem 0.9rem;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: 2px solid rgba(239, 31, 47, 0.3);
  border-color: rgba(239, 31, 47, 0.7);
}

/* Toast system */
.toast-container {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  z-index: 9000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  padding: 0.75rem 1rem;
  border-radius: 8px;
  color: white;
  font-weight: 500;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  animation: toastIn 0.3s ease;
}

.toast.success {
  background: #10B981;
}

.toast.error {
  background: #EF4444;
}

.toast.hiding {
  animation: toastOut 0.3s ease;
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateX(100%);
  }

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

@keyframes toastOut {
  from {
    opacity: 1;
    transform: translateX(0);
  }

  to {
    opacity: 0;
    transform: translateX(100%);
  }
}

/* WhatsApp flotante */
.whatsapp-float {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #25D366;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
  z-index: 9999;
  transition: all 0.3s ease;
  text-decoration: none;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.6);
}

/* Powered by HELIX */
.helix-powered {
  text-align: center;
  padding: 1rem;
}

.helix-powered a {
  font-size: 10px;
  color: #999;
  opacity: 0.35;
  text-decoration: none;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 500;
  transition: opacity 0.2s;
}

.helix-powered a:hover {
  opacity: 0.7;
}

@media (min-width: 700px) {
  .items-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .contact-grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

@media (min-width: 920px) {
  .main-nav {
    display: flex;
  }

  .hero-grid {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: center;
  }

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