/* ========================================
   501 MINING — Image-Free Premium Theme
   Zero image dependencies
   ======================================== */

:root {
  --gold: #e6a21a;
  --gold-dark: #c9860d;
  --gold-glow: rgba(230, 162, 26, 0.25);
  --black: #080808;
  --dark: #111111;
  --panel: #171717;
  --text: #f4f1ec;
  --muted: #b4b4b4;
  --line: rgba(230, 162, 26, 0.22);
  --green: #25D366;
  --max: 1100px;
  --radius: 4px;
  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0 }
html { scroll-behavior: smooth }
body {
  font-family: 'Segoe UI', Arial, sans-serif;
  background: var(--black);
  color: var(--text);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: color 0.3s var(--ease) }
.container { width: min(var(--max), calc(100% - 32px)); margin: 0 auto }

/* --- Navigation --- */
nav {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(8, 8, 8, 0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}
.nav-wrap {
  min-height: 68px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-size: 1.6rem; font-weight: 800; letter-spacing: 0.12em;
}
.brand .five01 {
  color: var(--gold);
  font-size: 1.8rem;
  font-family: Impact, Haettenschweiler, 'Arial Narrow Bold', sans-serif;
}
.brand .mining { color: var(--text) }
.nav-links { display: flex; gap: 20px; align-items: center }
.nav-links a {
  font-size: 0.76rem; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.14em; font-weight: 700;
  position: relative; padding: 4px 0;
  transition: color 0.3s var(--ease);
}
.nav-links a::after {
  content: '';
  position: absolute; bottom: -2px; left: 0; width: 0; height: 2px;
  background: var(--gold);
  transition: width 0.3s var(--ease);
}
.nav-links a:hover, .nav-links a.active { color: var(--text) }
.nav-links a:hover::after, .nav-links a.active::after { width: 100% }

/* --- Mobile Menu --- */
.menu-toggle {
  display: none;
  background: none; border: none; cursor: pointer;
  width: 36px; height: 36px; position: relative;
  flex-shrink: 0;
}
.menu-toggle span {
  display: block; width: 22px; height: 2px;
  background: var(--gold); position: absolute; left: 7px;
  transition: all 0.35s var(--ease); border-radius: 2px;
}
.menu-toggle span:nth-child(1) { top: 10px }
.menu-toggle span:nth-child(2) { top: 17px }
.menu-toggle span:nth-child(3) { top: 24px }
.menu-toggle.open span:nth-child(1) { top: 17px; transform: rotate(45deg) }
.menu-toggle.open span:nth-child(2) { opacity: 0; transform: translateX(-8px) }
.menu-toggle.open span:nth-child(3) { top: 17px; transform: rotate(-45deg) }

/* --- Buttons --- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 13px 24px; font-size: 0.78rem; font-weight: 700;
  letter-spacing: 0.12em; text-transform: uppercase;
  border: 1px solid transparent; border-radius: var(--radius);
  cursor: pointer; transition: all 0.3s var(--ease);
}
.btn-solid { background: var(--gold); color: #111 }
.btn-solid:hover { background: var(--gold-dark); box-shadow: 0 4px 20px var(--gold-glow); transform: translateY(-1px) }
.btn-outline { border-color: var(--gold); color: var(--gold) }
.btn-outline:hover { background: rgba(230,162,26,0.1); box-shadow: 0 4px 20px var(--gold-glow); transform: translateY(-1px) }
.btn-wa { background: var(--green); color: #fff }
.btn-wa:hover { background: #1fbf56; box-shadow: 0 4px 20px rgba(37,211,102,0.35); transform: translateY(-1px) }

/* --- Hero --- */
.hero {
  min-height: 70vh; display: flex; align-items: center; padding: 80px 0 60px;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(230,162,26,0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(230,162,26,0.05) 0%, transparent 50%),
    linear-gradient(160deg, #0a0a0a 0%, #111 50%, #0d0d0d 100%);
  border-bottom: 1px solid var(--line);
}
.hero-content { max-width: 720px }
.eyebrow {
  font-size: 0.76rem; color: var(--gold);
  letter-spacing: 0.28em; text-transform: uppercase;
  font-weight: 700; margin-bottom: 18px;
}
h1, h2, h3 {
  font-family: Impact, Haettenschweiler, 'Arial Narrow Bold', sans-serif;
  letter-spacing: 0.03em; line-height: 0.96;
}
h1 { font-size: clamp(3rem, 8vw, 5.6rem); margin-bottom: 20px }
h2 { font-size: clamp(2rem, 5vw, 3.6rem); margin-bottom: 14px }
h1 em, h2 em { font-style: normal; color: var(--gold) }
p { line-height: 1.76; color: var(--muted) }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px }

/* --- Quick Info Strip --- */
.info-strip {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--line);
  background: rgba(230,162,26,0.04);
}
.info-item {
  padding: 24px 16px; text-align: center;
  border-right: 1px solid rgba(230,162,26,0.12);
  transition: background 0.3s var(--ease);
}
.info-item:last-child { border-right: 0 }
.info-item:hover { background: rgba(230,162,26,0.06) }
.info-item strong { display: block; font-size: 2rem; color: var(--gold); font-weight: 800; margin-bottom: 4px }
.info-item span { font-size: 0.74rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.14em }

/* --- Sections --- */
section { padding: 80px 0 }
.dark { background: var(--dark) }
.section-top { margin-bottom: 32px }

/* --- Grids --- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px }

/* --- Cards & Panels --- */
.card, .panel {
  background: rgba(0,0,0,0.48);
  border: 1px solid var(--line);
  padding: 28px; border-radius: var(--radius);
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.card:hover, .panel:hover {
  border-color: rgba(230,162,26,0.4);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

/* --- Product Cards --- */
.badge {
  display: inline-block; padding: 5px 10px;
  background: var(--gold); color: #111;
  font-size: 0.66rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.14em;
  margin-bottom: 12px; border-radius: 2px;
}
.product-title { font-size: 1.6rem; margin-bottom: 8px; font-weight: 800 }
.ticks { list-style: none; display: grid; gap: 7px; margin: 14px 0 16px }
.ticks li { color: var(--muted); font-size: 0.92rem }
.ticks li::before { content: '\25B8 '; color: var(--gold) }
.price { font-size: 2.4rem; color: var(--gold); font-weight: 800 }
.sub { color: var(--muted); font-size: 0.88rem }
.note {
  margin-top: 18px;
  background: rgba(230,162,26,0.06);
  border-left: 3px solid var(--gold);
  padding: 14px 18px; color: var(--muted);
  line-height: 1.7; border-radius: 0 var(--radius) var(--radius) 0;
}

/* --- Calculator --- */
.calc { display: grid; grid-template-columns: 1fr 1fr; gap: 24px }
.field { margin-bottom: 14px }
.field label {
  display: block; margin-bottom: 7px;
  color: var(--muted); font-size: 0.74rem;
  text-transform: uppercase; letter-spacing: 0.12em; font-weight: 700;
}
.field input, .field select, .field textarea {
  width: 100%; padding: 13px;
  background: #0e0e0e;
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--text); border-radius: var(--radius);
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
  font-family: inherit; font-size: 0.94rem;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 3px var(--gold-glow);
}
.result-main { font-size: 2.8rem; color: var(--gold); font-weight: 800; margin: 6px 0 }
.row {
  display: flex; justify-content: space-between; gap: 10px;
  padding: 9px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  color: var(--muted); font-size: 0.94rem;
}
.row.total {
  margin-top: 8px; padding: 12px;
  background: rgba(230,162,26,0.06);
  border-bottom: 0; border-radius: var(--radius);
}
.row.total strong { color: var(--gold) }

/* --- Delivery Chips --- */
.areas { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-top: 12px }
.chip {
  padding: 11px 14px;
  background: rgba(230,162,26,0.06);
  border: 1px solid var(--line);
  color: var(--text); border-radius: var(--radius);
  transition: all 0.3s var(--ease); font-size: 0.94rem;
}
.chip:hover { background: rgba(230,162,26,0.12); border-color: var(--gold); transform: translateX(4px) }

/* --- Contact --- */
.contact-item {
  display: flex; gap: 14px; padding: 14px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  transition: padding-left 0.3s var(--ease);
}
.contact-item:hover { padding-left: 6px }
.contact-icon { font-size: 1.4rem; line-height: 1; min-width: 28px; text-align: center }
.contact-item strong {
  display: block; font-size: 0.74rem;
  color: var(--muted); text-transform: uppercase;
  letter-spacing: 0.12em; margin-bottom: 3px;
}

/* --- Map --- */
.map-box iframe {
  width: 100%; height: 320px; border: 0;
  filter: grayscale(0.15) contrast(1.05);
  border-radius: var(--radius);
}

/* --- Page Hero (inner pages) --- */
.page-hero {
  padding: 64px 0;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(230,162,26,0.07) 0%, transparent 60%),
    linear-gradient(160deg, #0a0a0a, #131313);
  border-bottom: 1px solid var(--line);
}

/* --- Footer --- */
footer {
  padding: 44px 0 24px;
  border-top: 1px solid var(--line);
  background: #050505;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr;
  gap: 28px; padding-bottom: 24px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-grid a, .footer-grid p { color: var(--muted); line-height: 1.7; font-size: 0.92rem }
.footer-grid a { display: block; margin-bottom: 5px; transition: color 0.3s var(--ease), padding-left 0.3s var(--ease) }
.footer-grid a:hover { color: var(--gold); padding-left: 4px }
.footer-grid h4 { color: var(--gold); text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.76rem; margin-bottom: 10px }
.footer-bottom {
  display: flex; justify-content: space-between; gap: 16px;
  padding-top: 18px; color: #666; font-size: 0.85rem;
}

/* --- Floating WhatsApp --- */
.float-wa {
  position: fixed; right: 20px; bottom: 20px;
  width: 58px; height: 58px; border-radius: 50%;
  background: var(--green);
  display: flex; align-items: center; justify-content: center;
  color: white; font-size: 1.4rem;
  box-shadow: 0 6px 24px rgba(37,211,102,0.4);
  z-index: 999;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
  animation: wa-pulse 2.5s infinite;
}
.float-wa:hover { transform: scale(1.1); box-shadow: 0 8px 32px rgba(37,211,102,0.55) }
@keyframes wa-pulse {
  0%, 100% { box-shadow: 0 6px 24px rgba(37,211,102,0.4) }
  50% { box-shadow: 0 6px 32px rgba(37,211,102,0.65) }
}

/* --- Scroll Reveal --- */
.reveal {
  opacity: 0; transform: translateY(28px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.visible { opacity: 1; transform: translateY(0) }
.reveal-delay-1 { transition-delay: 0.1s }
.reveal-delay-2 { transition-delay: 0.2s }

/* --- Divider --- */
.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-glow), transparent);
  margin: 0;
}

/* --- Responsive: Tablet --- */
@media (max-width: 980px) {
  .grid-2, .grid-3, .calc, .footer-grid { grid-template-columns: 1fr }
  .info-strip { grid-template-columns: repeat(2, 1fr) }
  .areas { grid-template-columns: 1fr 1fr }
  .menu-toggle { display: block }
  .nav-wrap { flex-wrap: wrap; padding: 12px 0 }
  .nav-top { display: flex; width: 100%; align-items: center; justify-content: space-between }
  .nav-links {
    display: none; flex-direction: column;
    width: 100%; gap: 0;
    border-top: 1px solid var(--line);
    margin-top: 10px; padding-top: 6px;
  }
  .nav-links.open { display: flex }
  .nav-links a { padding: 11px 0; border-bottom: 1px solid rgba(255,255,255,0.05); width: 100% }
  .nav-links a:last-child { border-bottom: none }
  .nav-links a::after { display: none }
}

/* --- Responsive: Mobile --- */
@media (max-width: 600px) {
  .info-strip { grid-template-columns: 1fr 1fr }
  .hero-actions { flex-direction: column; align-items: stretch; width: 100% }
  .btn { width: 100%; text-align: center }
  .footer-bottom { flex-direction: column; text-align: center }
  .areas { grid-template-columns: 1fr }
  h1 { font-size: clamp(2.4rem, 10vw, 3.6rem) }
  .hero { min-height: auto; padding: 60px 0 50px }
  .result-main { font-size: 2rem }
}