/* =========================================================
   Vrone ERP Landing Page — vrone.pro
   Earthana Environmental Solutions Pvt. Ltd.
   ========================================================= */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --green-50:  #f0fdf4;
  --green-100: #dcfce7;
  --green-400: #4ade80;
  --green-500: #22c55e;
  --green-600: #16a34a;
  --green-700: #15803d;
  --green-900: #14532d;
  --emerald:   #10b981;
  --teal:      #0d9488;

  --gray-50:   #f9fafb;
  --gray-100:  #f3f4f6;
  --gray-200:  #e5e7eb;
  --gray-400:  #9ca3af;
  --gray-600:  #4b5563;
  --gray-700:  #374151;
  --gray-800:  #1f2937;
  --gray-900:  #111827;

  --white: #ffffff;
  --bg-dark: #0a0f0d;
  --bg-card: #111a14;

  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.3);
  --shadow-md: 0 4px 20px rgba(0,0,0,.4);
  --shadow-glow: 0 0 40px rgba(34, 197, 94, .15);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg-dark);
  color: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ── UTILITIES ───────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: .9rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all .2s ease;
}
.btn--primary {
  background: var(--green-500);
  color: var(--gray-900);
}
.btn--primary:hover { background: var(--green-400); transform: translateY(-1px); }
.btn--outline {
  border-color: var(--green-500);
  color: var(--green-400);
  background: transparent;
}
.btn--outline:hover { background: rgba(34,197,94,.1); }
.btn--ghost {
  background: rgba(255,255,255,.07);
  color: var(--white);
  border-color: rgba(255,255,255,.12);
}
.btn--ghost:hover { background: rgba(255,255,255,.12); }
.btn--lg { padding: 15px 32px; font-size: 1rem; }

.text-gradient {
  background: linear-gradient(135deg, var(--green-400) 0%, var(--teal) 60%, var(--emerald) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-tag {
  display: inline-block;
  background: rgba(34,197,94,.12);
  color: var(--green-400);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 100px;
  margin-bottom: 16px;
  border: 1px solid rgba(34,197,94,.2);
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 56px;
}
.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 14px;
  color: var(--white);
}
.section-sub {
  color: var(--gray-400);
  font-size: 1.05rem;
}

/* ── NAV ─────────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background .3s, backdrop-filter .3s, box-shadow .3s;
}
.nav.scrolled {
  background: rgba(10,15,13,.88);
  backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 rgba(255,255,255,.06);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.nav__logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  font-size: 1.3rem;
  font-weight: 800;
}
.logo-leaf { color: var(--green-500); font-size: .7em; }
.logo-text { color: var(--white); }
.logo-dot { color: var(--green-400); }
.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav__links a {
  color: var(--gray-400);
  text-decoration: none;
  font-size: .9rem;
  font-weight: 500;
  transition: color .2s;
}
.nav__links a:hover { color: var(--white); }
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all .2s;
}
.nav__mobile {
  display: none;
  flex-direction: column;
  gap: 0;
  background: rgba(10,15,13,.96);
  border-top: 1px solid rgba(255,255,255,.06);
  padding-bottom: 12px;
}
.nav__mobile a {
  color: var(--gray-400);
  text-decoration: none;
  font-size: .95rem;
  padding: 14px 24px;
  border-bottom: 1px solid rgba(255,255,255,.04);
  transition: color .2s;
}
.nav__mobile a:hover { color: var(--white); background: rgba(255,255,255,.03); }
.nav__mobile.open { display: flex; }

/* ── HERO ────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 120px 0 80px;
}
.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(34,197,94,.18) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 80% 80%, rgba(16,185,129,.1) 0%, transparent 50%),
    radial-gradient(ellipse 30% 30% at 10% 90%, rgba(13,148,136,.08) 0%, transparent 50%);
  pointer-events: none;
}
.hero__inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
}
.hero__badge {
  display: inline-block;
  background: rgba(34,197,94,.08);
  border: 1px solid rgba(34,197,94,.25);
  color: var(--green-400);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 28px;
}
.hero__title {
  font-size: clamp(2.8rem, 7vw, 5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -.02em;
  margin-bottom: 24px;
}
.hero__sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--gray-400);
  max-width: 560px;
  margin: 0 auto 40px;
  line-height: 1.7;
}
.hero__cta {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 60px;
}
.hero__stats {
  display: inline-flex;
  align-items: center;
  gap: 24px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 100px;
  padding: 14px 32px;
}
.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}
.stat__num {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--green-400);
  line-height: 1;
}
.stat__label {
  font-size: .72rem;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: .06em;
}
.stat__divider {
  width: 1px;
  height: 32px;
  background: rgba(255,255,255,.1);
}
.hero__scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--gray-400);
  font-size: .72rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  opacity: .5;
}
.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--gray-400), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: .5; }
  50% { opacity: 1; }
}

/* ── FEATURES STRIP ──────────────────────────────────────── */
.features-strip {
  padding: 80px 0;
  border-top: 1px solid rgba(255,255,255,.06);
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: border-color .25s, box-shadow .25s, transform .25s;
}
.feature-card:hover {
  border-color: rgba(34,197,94,.3);
  box-shadow: 0 0 24px rgba(34,197,94,.08);
  transform: translateY(-3px);
}
.feature-card__icon {
  font-size: 1.8rem;
  margin-bottom: 14px;
  display: block;
}
.feature-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--white);
}
.feature-card p {
  font-size: .87rem;
  color: var(--gray-400);
  line-height: 1.6;
}

/* ── MODULES ─────────────────────────────────────────────── */
.modules {
  padding: 100px 0;
}
.modules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}
.module-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: border-color .25s, box-shadow .25s, transform .25s;
}
.module-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.module-card--hr:hover    { border-color: rgba(96,165,250,.4); box-shadow: 0 0 28px rgba(96,165,250,.08); }
.module-card--projects:hover { border-color: rgba(251,191,36,.4); box-shadow: 0 0 28px rgba(251,191,36,.08); }
.module-card--crm:hover   { border-color: rgba(167,139,250,.4); box-shadow: 0 0 28px rgba(167,139,250,.08); }
.module-card--finance:hover { border-color: rgba(34,197,94,.4); box-shadow: var(--shadow-glow); }
.module-card--inventory:hover { border-color: rgba(249,115,22,.4); box-shadow: 0 0 28px rgba(249,115,22,.08); }
.module-card--ai:hover    { border-color: rgba(236,72,153,.4); box-shadow: 0 0 28px rgba(236,72,153,.08); }

.module-card__top {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}
.module-icon {
  font-size: 1.6rem;
  flex-shrink: 0;
}
.module-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
}
.module-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.module-card ul li {
  font-size: .875rem;
  color: var(--gray-400);
  padding-left: 18px;
  position: relative;
}
.module-card ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green-500);
  opacity: .6;
}

/* ── ABOUT ───────────────────────────────────────────────── */
.about {
  padding: 100px 0;
  border-top: 1px solid rgba(255,255,255,.06);
}
.about__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.about__text p {
  color: var(--gray-400);
  margin-bottom: 16px;
  line-height: 1.75;
}
.about__text .btn { margin-top: 8px; }
.about__visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 280px;
}
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  pointer-events: none;
}
.orb--1 {
  width: 260px; height: 260px;
  background: radial-gradient(circle, rgba(34,197,94,.25), transparent);
  top: -20px; left: -20px;
}
.orb--2 {
  width: 180px; height: 180px;
  background: radial-gradient(circle, rgba(16,185,129,.2), transparent);
  bottom: 0; right: 0;
}
.about__badge-stack {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 1;
}
.about__badge {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(34,197,94,.2);
  border-radius: 10px;
  padding: 12px 20px;
  font-size: .9rem;
  font-weight: 500;
  backdrop-filter: blur(8px);
  color: var(--white);
  transition: border-color .2s, background .2s;
}
.about__badge:hover {
  border-color: rgba(34,197,94,.5);
  background: rgba(34,197,94,.06);
}
.about__badge span { font-size: 1rem; }

/* ── CTA BANNER ──────────────────────────────────────────── */
.cta-banner {
  padding: 80px 0;
  background: linear-gradient(135deg, rgba(34,197,94,.08) 0%, rgba(16,185,129,.06) 100%);
  border-top: 1px solid rgba(34,197,94,.12);
  border-bottom: 1px solid rgba(34,197,94,.12);
}
.cta-banner__inner {
  text-align: center;
}
.cta-banner h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 800;
  margin-bottom: 12px;
}
.cta-banner p {
  color: var(--gray-400);
  font-size: 1rem;
  margin-bottom: 32px;
}

/* ── FOOTER ──────────────────────────────────────────────── */
.footer {
  background: #070c09;
  border-top: 1px solid rgba(255,255,255,.06);
  padding-top: 60px;
}
.footer__inner {
  display: flex;
  justify-content: space-between;
  gap: 48px;
  flex-wrap: wrap;
  padding-bottom: 48px;
}
.footer__brand {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer__brand .logo-text { font-size: 1.2rem; }
.footer__brand p {
  font-size: .82rem;
  color: var(--gray-400);
  line-height: 1.6;
  max-width: 240px;
}
.footer__links {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
}
.footer__links > div {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer__links h4 {
  font-size: .8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--gray-400);
  margin-bottom: 4px;
}
.footer__links a {
  color: var(--gray-400);
  text-decoration: none;
  font-size: .87rem;
  transition: color .2s;
}
.footer__links a:hover { color: var(--green-400); }
.footer__bottom {
  border-top: 1px solid rgba(255,255,255,.06);
  padding: 20px 24px;
  text-align: center;
}
.footer__bottom p {
  font-size: .8rem;
  color: var(--gray-600);
}

/* ── RESPONSIVE ──────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__hamburger { display: flex; }

  .hero { padding: 100px 0 60px; }
  .hero__stats { flex-wrap: wrap; gap: 16px; }

  .about__inner { grid-template-columns: 1fr; gap: 40px; }
  .about__visual { min-height: 200px; }

  .footer__inner { flex-direction: column; gap: 32px; }
}

@media (max-width: 480px) {
  .hero__cta { flex-direction: column; align-items: center; }
  .features-grid { grid-template-columns: 1fr; }
  .modules-grid { grid-template-columns: 1fr; }
  .footer__links { gap: 24px; }
}