/* ================= GLOBAL VARIABLES & SETTINGS ================= */
:root {
  color-scheme: light dark;

  /* Backgrounds */
  --bg-body-start: light-dark(#f0f4f8, #000509);
  --bg-body-end: light-dark(#ffffff, #000000);
  --bg-why-section: light-dark(#e2e8f0, #0a0f1f);
  --bg-footer: light-dark(#1e293b, #020617);

  /* Text */
  --text-main: light-dark(#0f172a, #ffffff);
  --text-muted: light-dark(#475569, #9aa3c7);
  --text-nav: light-dark(#1e293b, #cfd6ff);
  --text-nav-hover: light-dark(#2563eb, #bdc7fd);

  /* Cards */
  --card-bg: light-dark(rgba(255, 255, 255, 0.8), rgba(0, 0, 0, 0.2));
  --card-border: light-dark(rgba(0, 0, 0, 0.1), rgba(255, 255, 255, 0.4));
  --card-shadow: light-dark(rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.1));

  /* Accents */
  --accent-blue: #2d4bff;
  --accent-yellow: light-dark(#d97706, #f5c542);
  --accent-green: #2d4bff;
  --accent-ygreen: #8591c2;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", sans-serif;
}

body {
  background: radial-gradient(circle at top left, var(--bg-body-start), var(--bg-body-end));
  color: var(--text-main);
}

.navbar {
  position: sticky;
  top: 0;
  /* 🔴 REQUIRED */
  z-index: 1000;
  /* ensures it stays above content */

  display: flex;
  align-items: center;
  justify-content: space-between;

  padding: 20px 60px;

  background: light-dark(#ffffff, transparent);
  backdrop-filter: blur(8px);
  /* optional: glass effect */
}


.logo {
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--text-main);
}

.logo img {
  height: 48px;
}

/* ================= NAV LINKS ================= */
.nav-links {
  display: flex;
  gap: 28px;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-nav);
  font-size: 14px;
  transition: transform 0.3s ease, color 0.3s ease;
  font-weight: 500;
}

.nav-links a:hover {
  transform: scale(1.2);
  color: var(--text-nav-hover);
}

/* ================= SIGN UP BUTTON ================= */
.login-btn {
  background: var(--accent-blue);
  border: none;
  padding: 8px 18px;
  color: #fff;
  border-radius: 4px;
  cursor: pointer;
}

.login-btn:hover {
  font-weight: bolder;
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.45), 0 0 40px rgba(59, 130, 246, 0.35);
}

.right {
  display: flex;
  justify-content: space-around;
  align-items: center;
  gap: 20px;
}

/* ================= CHECKBOX & HAMBURGER ================= */
#menu-toggle {
  display: none;
}

.hamburger {
  display: none;
  position: relative;
  width: 32px;
  height: 32px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.hamburger i {
  position: absolute;
  font-size: 26px;
  color: var(--text-main);
  /* Icon color flips automatically */
  transition: opacity 0.3s ease, transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.hamburger .open-icon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

.hamburger .close-icon {
  opacity: 0;
  transform: rotate(-90deg) scale(0.8);
}

/* ================= MOBILE MENU ================= */
@media (max-width: 790px) {
  .hamburger {
    display: flex;
    z-index: 1001;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    flex-direction: column;
    align-items: center;

    /* Auto Switch Menu Background */
    background: light-dark(rgba(255, 255, 255, 0.95), rgba(0, 0, 0, 0.92));
    border-bottom: 1px solid var(--card-border);

    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transform: translateY(-10px);
    transition: max-height 0.4s ease, opacity 0.3s ease, transform 0.3s ease;
    z-index: 1000;
  }

  .nav-links a {
    padding: 14px 0;
    width: 100%;
    text-align: center;
    border-bottom: 1px solid light-dark(rgba(0, 0, 0, 0.1), rgba(255, 255, 255, 0.08));
  }

  #menu-toggle:checked~.nav-links {
    max-height: 400px;
    opacity: 1;
    transform: translateY(0);
  }

  #menu-toggle:checked~.hamburger .open-icon {
    opacity: 0;
    transform: rotate(90deg) scale(0.8);
  }

  #menu-toggle:checked~.hamburger .close-icon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
  }
}

/* ================= HERO SECTION ================= */
.hero-slide {
  min-height: calc(100vh - 400px);
  display: flex;
  align-items: center;
  padding: 60px;
  gap: 40px;
  background-size: cover;
  background-position: center;
  position: relative;
}

.hero-slide::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
}

.hero-left {
  position: relative;
  z-index: 2;
  flex: 1;
  margin-top: 10vh;
}

/* SLIDE 1 */
.hero {
  background-image: url(../assets/f79fe4aadf87d22ff9d7.png);
}

.hero h1 {
  color: #ffffff;
  font-size: 2.5rem;
}

.hero p {
  color: #ffffff;
  margin-top: 25px;
}

.hero h1 span {
  color: #cfd6ff;
}

/* SLIDE 2 */
.hero2 {
  background-image: url(../assets/2d5321175bb9b6bea964.png);
}

.hero2 h1 {
  color: #fff7cc;
  font-size: 2.5rem;
}

.hero2 p {
  color: #fff7cc;
  margin-top: 25px;
}

.hero2 h1 span {
  color: #ffd700;
}

/* SLIDE 3 */
.hero3 {
  background-image: url(../assets/a161e9eb7e59a386417a.png);
}

.hero3 h1 {
  color: #eaffea;
  font-size: 2.5rem;
}

.hero3 p {
  color: #eaffea;
  margin-top: 25px;
}

.hero3 h1 span {
  color: #4ade80;
}

/* SLIDE 4 */
.hero4 {
  background-image: url(../assets/6a8c59e6ebd189327c14.png);
}

.hero4 h1 {
  color: #e0f2ff;
  font-size: 2.5rem;
}

.hero4 p {
  color: #e0f2ff;
  margin-top: 25px;
}

.hero4 h1 span {
  color: #38bdf8;
}

.swiper-pagination-bullet {
  background: #aaa;
  opacity: 1;
}

.swiper-pagination-bullet-active {
  background: #2563eb;
}

@media(max-width:768px) {
  .hero-slide {
    padding: 30px 20px;
  }

  .hero-left h1 {
    font-size: 28px;
  }

  .hero-left p {
    font-size: 14px;
  }
}

/* ================= PRODUCT CARDS ================= */
.card-section {
  padding: 60px 80px;
  text-align: center;
}

.card-container-main h2 {
  font-size: 36px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-main);
}

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

.card-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 25px;
}

.card-container-main {
  margin-bottom: 25px;
  gap: 25px;
}

.card {
  background: var(--card-bg);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 8px 25px var(--card-shadow);
  transition: transform 0.3s ease;
  border: 1.5px solid var(--card-border);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 0 25px light-dark(rgba(0, 0, 0, 0.2), rgba(255, 180, 0, 0.25));
}

.card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.card-content {
  padding: 20px;
  text-align: left;
}

.card-content h3 {
  font-size: 20px;
  margin-bottom: 10px;
  color: var(--text-main);
}

.card-content .short-text {
  font-size: 14px;
  color: var(--accent-yellow);
  margin-bottom: 15px;
}

.card-content .more-text {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 15px;
  display: none;
  margin-top: 10px;
  line-height: 1.5;
}

.card-content span {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 15px;
}

.know-more-btn {
  margin-top: 15px;
  padding: 8px 16px;
  border: none;
  border-radius: 6px;
  background: var(--accent-green);
  color: --text-main;
  font-weight: 600;
  cursor: pointer;
}

/* ================= WHY KESHAV ================= */
.why-keshav {
  padding: 90px 60px;
  background: radial-gradient(circle at top, var(--bg-why-section), var(--bg-body-end));
  color: var(--text-main);
  text-align: center;
  margin-bottom: 60px;
}

.why-heading h2 {
  font-size: 38px;
  margin-bottom: 10px;
}

.why-heading p {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 30px;
}

.why-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.why-card {
  border: 1.5px solid light-dark(rgba(0, 0, 0, 0.1), rgba(80, 100, 255, 0.6));
  border-radius: 18px;
  padding: 35px 30px;
  background: light-dark(#ffffff, linear-gradient(180deg, rgba(10, 15, 30, 0.85), rgba(0, 0, 0, 0.95)));
  transition: all 0.3s ease;
  box-shadow: 0 5px 15px var(--card-shadow);
}

.why-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 0 30px light-dark(rgba(0, 0, 0, 0.15), rgba(80, 100, 255, 0.35));
}

.icon-circle {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1.5px solid light-dark(#ccc, rgba(255, 255, 255, 0.5));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.icon-circle img {
  width: 45px;
  height: 45px;
  object-fit: contain;
}

.why-card h3 {
  font-size: 20px;
  margin-bottom: 12px;
  color: var(--text-main);
}

.why-card p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-muted);
}

/* ================= VISION SECTION ================= */
.vision-section {
  padding: 80px 20px;
  display: flex;
  justify-content: center;
}

.vision-card {
  max-width: 1100px;
  padding: 70px 120px;
  border-radius: 18px;
  text-align: center;
  background: light-dark(linear-gradient(180deg, #eff6ff, #dbeafe), linear-gradient(180deg, #081e47, #010829));
  box-shadow: 0 25px 60px light-dark(rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.6));
}

.vision-card h2 {
  color: var(--text-main);
  font-size: 34px;
  margin-bottom: 20px;
}

.vision-card p {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.8;
}

/* ================= TESTIMONIAL ================= */
.testimonial-section {
  width: 100%;
  padding: 40px 20px;
  margin-bottom: 60px;
}

.testimonial-box {
  max-width: 1100px;
  margin: auto;
  padding: 40px;
  border-radius: 22px;
  border: 2px solid light-dark(rgba(0, 0, 0, 0.1), rgba(255, 200, 120, 0.5));

  background: light-dark(#fff, linear-gradient(to bottom, rgba(255, 200, 120, 0.15), rgba(0, 0, 0, 0.85)));
  box-shadow: 0 0 40px light-dark(rgba(0, 0, 0, 0.05), rgba(255, 180, 80, 0.35));
  text-align: center;
}

.testimonial-box h2 {
  color: light-dark(#d97706, #f5d28b);
  letter-spacing: 2px;
}

.subtitle {
  color: light-dark(#b45309, #e6c77a);
  margin: 8px 0 30px;
}

.tcard {
  background: transparent;
  border: 1px solid light-dark(#eee, rgba(255, 200, 120, 0.35));
  border-radius: 16px;
  padding: 25px 20px;
  color: var(--text-main);
  text-align: center;
}

.tcard img {
  width: 75px;
  height: 75px;
  border-radius: 50%;
  border: 2px solid light-dark(#d97706, #f5d28b);
  margin-bottom: 12px;
}

.tcard h4 {
  color: light-dark(#d97706, #f5d28b);
}

.tcard span {
  font-size: 13px;
  color: light-dark(#b45309, #c7b27a);
}

.tcard p {
  font-size: 14px;
  line-height: 1.5;
  margin-top: 12px;
  color: var(--text-muted);
}

/* ================= FOOTER ================= */
.footer {
  background: var(--bg-footer);
  color: var(--text-nav);
  font-family: "Segoe UI", sans-serif;
  align-items: center;
}

.footer-follow {
  display: flex;
  border-bottom: 1px solid light-dark(rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.1));
  align-items: center;
  justify-content: center;
}

.footer-follow h3 {
  color: #fff;
  font-size: 18px;
  margin-bottom: 15px;
  padding: 30px 10px 30px 120px;
}

.social-icons {
  display: flex;
  gap: 18px;
  padding: 30px 120px 30px 20px;
}

.social-icons a {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #fff;
  transition: all 0.3s ease;
}

.social-icons svg {
  width: 20px;
  height: 20px;
  fill: var(--text-muted);
  transition: all 0.3s ease;
}

.social-icons a:hover {
  background: #3b82f6;
  transform: translateY(-4px);
}

.social-icons a:hover svg {
  fill: #ffffff;
}

.footer-section {
  padding: 50px 20px;
}

.footer-grid {
  max-width: 1200px;
  margin: auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}

.footer-col h4 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 15px;
}

.footer-col ul {
  list-style: none;
  padding: 0;
}

.footer-col ul li {
  font-size: 14px;
  color: var(--accent-ygreen);
  margin-bottom: 8px;
  cursor: pointer;
}

.footer-col ul li:hover {
  color: #38bdf8;
}

.footer-bottom {
  text-align: center;
  padding: 25px 20px;
  border-top: 1px solid light-dark(rgba(0, 0, 0, 0.1), rgba(255, 255, 255, 0.1));
  font-size: 13px;
  color: #fff;
}

/* ================= RESPONSIVE UTILS ================= */
@media (max-width: 900px) {
  .footer-follow h3 {
    margin-bottom: 15px;
    padding: 30px 10px 30px 60px;
  }

  .social-icons {
    gap: 15px;
    padding: 30px 20px 30px 10px;
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero {
    background-position: right;
    flex-direction: column;
    text-align: center;
  }

  .hero-left p {
    margin: auto;
  }

  .navbar {
    padding: 20px;
  }

  .why-cards {
    grid-template-columns: 1fr;
  }

  .why-keshav {
    padding: 60px 20px;
  }
}

@media (max-width: 500px) {
  .vision-card {
    padding: 70px 10px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 1030px) {
  .hero {
    background-position: top 50% right 15%;
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 650px) {
  .hero {
    background-position: top 50% right 15%;
    flex-direction: column;
    text-align: center;
  }
    .footer-section {
      padding: 50px 20px;
      display: flex;
      justify-content: center;
      align-items: center;
    }
    .footer-follow {
      display: flex;
      border-bottom: 1px solid light-dark(rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.1));
      align-items: center;
      justify-content: center;
    }
}

@media (max-width: 420px) {
  .hero {
    background-position: top 50% right 18%;
    flex-direction: column;
    text-align: center;
  }
  .footer-section {
    padding: 50px 20px;
    display: flex;
    justify-content: center;
    align-items: center;
  }
  .footer-follow {
    display: flex;
    border-bottom: 1px solid light-dark(rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.1));
    align-items: center;
    justify-content: center;
  }
}

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