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

:root {
  --blue: #1565c0;
  --blue-light: #1e88e5;
  --purple: #7c3aed;
  --pink: #c026d3;
  --card-shadow: 0 4px 24px rgba(0,0,0,0.07);
  --bg-body: #ffffff;
  --bg-section-a: linear-gradient(160deg, #f8f0ff 0%, #e8f4ff 50%, #fdf0ff 100%);
  --bg-section-b: #ffffff;
  --bg-section-c: linear-gradient(160deg, #e8f4ff 0%, #f8f0ff 100%);
  --nav-bg: rgba(255,255,255,0.93);
  --nav-border: rgba(0,0,0,0.07);
  --card-bg: #ffffff;
  --card-border: rgba(0,0,0,0.07);
  --body-text: #1a1a2e;
  --mid-text: #444444;
  --light-text: #666666;
  --logo-text: #1e88e5;
  --nav-link: #1a1a2e;
  --hamburger-bar: #1a1a2e;
}

body.dark {
  --bg-body: #0f0f1a;
  --bg-section-a: linear-gradient(160deg, #1a0a2e 0%, #0a1a3a 50%, #1a0a2e 100%);
  --bg-section-b: #111122;
  --bg-section-c: linear-gradient(160deg, #0a1a3a 0%, #1a0a2e 100%);
  --nav-bg: rgba(10,10,28,0.95);
  --nav-border: rgba(255,255,255,0.08);
  --card-bg: #1a1a2e;
  --card-border: rgba(255,255,255,0.08);
  --body-text: #e8e8f0;
  --mid-text: #b0b0c8;
  --light-text: #8888aa;
  --logo-text: #60aaff;
  --nav-link: #e8e8f0;
  --hamburger-bar: #e8e8f0;
}

html { scroll-behavior: smooth; }

body {
  font-family: "Poppins", sans-serif;
  color: var(--body-text);
  background: var(--bg-body);
  overflow-x: hidden;
  transition: background 0.35s ease, color 0.35s ease;
}

/* NAVBAR */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--nav-border);
  padding: 0 5%; height: 72px;
  display: flex; align-items: center; justify-content: space-between;
  transition: box-shadow 0.3s, background 0.35s, border-color 0.35s;
}
nav.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.15); }

.nav-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.nav-logo img {
  width:auto; height: 50px;object-fit: contain;
  background: transparent; display: block;
}
.nav-logo span {
  font-size: 1.2rem; font-weight: 700;
  color: var(--logo-text); transition: color 0.35s;
}

.nav-links { display: flex; align-items: center; gap: 36px; list-style: none; }
.nav-links a {
  text-decoration: none; font-size: 0.92rem; font-weight: 500;
  color: var(--nav-link); position: relative; transition: color 0.2s;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -3px; left: 0;
  width: 0; height: 2px;
  background: linear-gradient(90deg, var(--blue-light), var(--purple));
  border-radius: 2px; transition: width 0.25s ease;
}
.nav-links a:hover { color: var(--blue-light); }
.nav-links a:hover::after { width: 100%; }

.nav-right { display: flex; align-items: center; gap: 12px; }

.dark-toggle {
  width: 44px; height: 44px; border-radius: 50%;
  background: linear-gradient(135deg, #1a1a5e, #7c3aed);
  border: none; cursor: pointer; font-size: 1.2rem;
  display: flex; align-items: center; justify-content: center;
  transition: transform 0.3s, box-shadow 0.3s;
  box-shadow: 0 2px 10px rgba(124,58,237,0.4);
}
.dark-toggle:hover {
  transform: rotate(20deg) scale(1.1);
  box-shadow: 0 4px 18px rgba(124,58,237,0.6);
}

.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; }
.hamburger span {
  display: block; width: 24px; height: 2px;
  background: var(--hamburger-bar); border-radius: 2px; transition: all 0.3s;
}

/* HERO */
#home {
  position: relative; min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  text-align: center; overflow: hidden;
  background: #1565c0;
}
.hero-bg-img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; object-position: center; opacity: 0.75;
}
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg,
    rgba(21,101,192,0.75) 0%,
    rgba(124,58,237,0.65) 50%,
    rgba(192,38,211,0.75) 100%);
}
.hero-content { position: relative; z-index: 2; max-width: 820px; padding: 0 20px; }
.hero-title {
  font-size: clamp(2.8rem, 7vw, 5rem); font-weight: 800; color: #fff;
  line-height: 1.1; letter-spacing: -1px; margin-bottom: 18px;
  animation: fadeUp 0.8s ease both;
  text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}
.hero-sub {
  font-size: clamp(0.88rem, 2vw, 1.05rem);
  color: rgba(255,255,255,0.88);
  letter-spacing: 0.4px; margin-bottom: 40px;
  animation: fadeUp 0.8s 0.15s ease both;
}
.hero-btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: #fff; color: var(--blue);
  font-size: 1rem; font-weight: 700; font-family: "Poppins", sans-serif;
  padding: 15px 40px; border-radius: 50px; border: none;
  cursor: pointer; text-decoration: none;
  box-shadow: 0 4px 24px rgba(0,0,0,0.25);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  animation: fadeUp 0.8s 0.3s ease both;
}
.hero-btn:hover { transform: translateY(-3px); box-shadow: 0 12px 36px rgba(0,0,0,0.3); }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* SECTIONS */
section { padding: 100px 5%; }

.section-title {
  text-align: center; font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 800;
  background: linear-gradient(135deg, var(--blue), var(--purple));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text; margin-bottom: 14px;
}
.section-underline {
  width: 60px; height: 4px;
  background: linear-gradient(90deg, var(--blue-light), var(--purple));
  border-radius: 4px; margin: 0 auto 60px;
}

/* ABOUT */
#about { background: var(--bg-section-a); }

.about-lead {
  max-width: 740px; margin: 0 auto 60px; text-align: center;
  font-size: 1.02rem; line-height: 1.85;
  color: var(--mid-text); transition: color 0.35s;
}
.about-cards {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px; max-width: 960px; margin: 0 auto;
}
.about-card {
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: 20px; padding: 40px 30px; text-align: center;
  box-shadow: var(--card-shadow);
  transition: transform 0.3s, box-shadow 0.3s, background 0.35s;
}
.about-card:hover { transform: translateY(-6px); box-shadow: 0 12px 40px rgba(100,60,200,0.15); }
.about-card .icon { font-size: 2.6rem; margin-bottom: 16px; }
.about-card h3 { font-size: 1.05rem; font-weight: 700; color: var(--purple); margin-bottom: 10px; }
.about-card p { font-size: 0.88rem; color: var(--light-text); line-height: 1.7; }

/* SERVICES */
#services { background: var(--bg-section-b); }

.services-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px; max-width: 1100px; margin: 0 auto;
}
.service-card {
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: 20px; overflow: hidden; box-shadow: var(--card-shadow);
  transition: transform 0.3s, box-shadow 0.3s, background 0.35s;
}
.service-card:hover { transform: translateY(-7px); box-shadow: 0 16px 48px rgba(30,100,220,0.18); }
.service-img { width: 100%; height: 200px; object-fit: cover; display: block; }
.service-body { padding: 26px 24px 30px; }
.service-title { font-size: 1.05rem; font-weight: 700; color: var(--blue-light); margin-bottom: 10px; }
.service-desc { font-size: 0.875rem; color: var(--light-text); line-height: 1.75; }

/* MISSION */
#mission { background: var(--bg-section-c); }

.mission-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 28px; max-width: 960px; margin: 0 auto;
}
.mission-card {
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: 20px; padding: 40px 36px;
  box-shadow: var(--card-shadow); transition: transform 0.3s, background 0.35s;
}
.mission-card:hover { transform: translateY(-5px); }
.mission-card h3 { font-size: 1.25rem; font-weight: 700; color: var(--blue-light); margin-bottom: 16px; }
.mission-card p { font-size: 0.92rem; color: var(--mid-text); line-height: 1.8; }

/* WHY CHOOSE US */
#why { background: var(--bg-section-a); }

.why-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 24px; max-width: 1100px; margin: 0 auto;
}
.why-card {
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: 20px; padding: 36px 24px; text-align: center;
  box-shadow: var(--card-shadow);
  transition: transform 0.3s, box-shadow 0.3s, background 0.35s;
}
.why-card:hover { transform: translateY(-6px); box-shadow: 0 12px 36px rgba(100,60,200,0.15); }
.why-card .icon { font-size: 2.5rem; margin-bottom: 14px; }
.why-card h3 { font-size: 0.98rem; font-weight: 700; color: var(--blue-light); margin-bottom: 8px; }
.why-card p { font-size: 0.84rem; color: var(--light-text); line-height: 1.7; }

/* FOOTER */
#contact {
  background: linear-gradient(135deg, #1565c0 0%, #7c3aed 60%, #c026d3 100%);
  color: #fff; padding: 80px 5% 40px;
}
.footer-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: 50px; max-width: 1100px; margin: 0 auto 60px;
}
.footer-brand h2 { font-size: 1.4rem; font-weight: 800; margin-bottom: 14px; }
.footer-brand p { font-size: 0.88rem; color: rgba(255,255,255,0.75); line-height: 1.8; margin-bottom: 24px; }
.footer-get-touch h3 { font-size: 1rem; font-weight: 700; margin-bottom: 10px; }
.footer-get-touch p { font-size: 0.86rem; color: rgba(255,255,255,0.72); line-height: 1.7; margin-bottom: 20px; }
.email-btn {
  display: inline-block; background: transparent;
  border: 2px solid #fff; color: #fff;
  font-family: "Poppins", sans-serif; font-size: 0.88rem; font-weight: 600;
  padding: 11px 28px; border-radius: 8px; text-decoration: none;
  transition: background 0.2s, color 0.2s;
}
.email-btn:hover { background: #fff; color: var(--blue); }
.footer-links h3, .footer-contact h3 { font-size: 1rem; font-weight: 700; margin-bottom: 16px; }
.footer-links ul { list-style: none; }
.footer-links li { margin-bottom: 10px; }
.footer-links a {
  color: rgba(255,255,255,0.75); text-decoration: none;
  font-size: 0.88rem; transition: color 0.2s;
}
.footer-links a:hover { color: #fff; }
.contact-item {
  display: flex; align-items: flex-start; gap: 10px;
  margin-bottom: 14px; font-size: 0.88rem; color: rgba(255,255,255,0.82);
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.18); padding-top: 24px;
  text-align: center; font-size: 0.82rem; color: rgba(255,255,255,0.55);
  max-width: 1100px; margin: 0 auto;
}

/* WHATSAPP */
.whatsapp-float { position: fixed; bottom: 28px; right: 28px; z-index: 9999; }
.whatsapp-float a {
  display: flex; align-items: center; justify-content: center;
  width: 60px; height: 60px; background: #25D366; border-radius: 50%;
  text-decoration: none; position: relative;
  box-shadow: 0 4px 16px rgba(37,211,102,0.5), 0 2px 8px rgba(0,0,0,0.15);
  transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1), box-shadow 0.3s ease;
  animation: wa-pop-in 0.5s cubic-bezier(0.34,1.56,0.64,1) 1s both;
}
.whatsapp-float a:hover {
  transform: scale(1.12) translateY(-3px);
  box-shadow: 0 10px 30px rgba(37,211,102,0.6);
}
.whatsapp-float a:active { transform: scale(0.95); }
.whatsapp-float a::before {
  content: ''; position: absolute; inset: 0; border-radius: 50%;
  background: rgba(37,211,102,0.45);
  animation: wa-pulse 2.8s ease-out infinite;
  animation-delay: 1.8s;
}
.whatsapp-float svg {
  width: 32px; height: 32px; fill: #fff;
  position: relative; z-index: 1;
}
.whatsapp-float a::after {
  content: "Chat with us";
  position: absolute; right: calc(100% + 14px); top: 50%;
  transform: translateY(-50%) translateX(8px);
  background: #1a1a2e; color: #fff; font-size: 12px; font-weight: 600;
  padding: 7px 14px; border-radius: 8px; white-space: nowrap;
  pointer-events: none; opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
  box-shadow: 0 3px 10px rgba(0,0,0,0.22);
}
.whatsapp-float a:hover::after {
  opacity: 1; transform: translateY(-50%) translateX(0);
}

@keyframes wa-pulse {
  0%   { transform: scale(1); opacity: 0.7; }
  70%  { transform: scale(1.75); opacity: 0; }
  100% { transform: scale(1.75); opacity: 0; }
}
@keyframes wa-pop-in {
  from { transform: scale(0); opacity: 0; }
  to   { transform: scale(1); opacity: 1; }
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column;
    position: absolute; top: 72px; left: 0; right: 0;
    background: var(--nav-bg); padding: 20px 5%; gap: 20px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
    border-bottom: 1px solid var(--nav-border);
  }
  .hamburger { display: flex; }
  .mission-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
}