/* ===== CSS VARIABLES ===== */
:root {
  /* Colors - Professional Battery Business Theme */
  --primary-color: #1d4ed8; /* Deep Blue - Professional and trustworthy */
  --primary-dark: #1e40af;
  --secondary-color: #f8fafc;
  --accent-color: #059669; /* Green - Energy/Power theme */
  --whatsapp-color: #25d366; /* WhatsApp Green */
  --warning-color: #f59e0b; /* Battery indicator yellow */
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-light: #64748b;
  --white: #ffffff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;

  /* Typography */
  --font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Borders */
  --border-radius-sm: 0.375rem;
  --border-radius: 0.5rem;
  --border-radius-lg: 0.75rem;
  --border-radius-xl: 1rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1),
    0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
    0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1),
    0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Transitions */
  --transition-all: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-colors: color 0.15s ease-in-out,
    background-color 0.15s ease-in-out, border-color 0.15s ease-in-out;
}

/* ===== RESET & BASE STYLES ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition-colors);
}

ul,
ol {
  list-style: none;
}

button {
  border: none;
  background: none;
  font: inherit;
  cursor: pointer;
  transition: var(--transition-all);
}

input,
textarea {
  font: inherit;
}

/* ===== UTILITY CLASSES ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  letter-spacing: -0.025em;
}

.section-subtitle {
  font-size: var(--font-size-xl);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: 500;
  text-align: center;
  border-radius: var(--border-radius-lg);
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  cursor: pointer;
  border: 2px solid transparent;
  min-height: 44px;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: left 0.5s;
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background-color: var(--primary-color);
  color: var(--white);
}

.btn-primary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(29, 78, 216, 0.4);
}

.btn-secondary {
  background-color: transparent;
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-secondary:hover {
  background-color: var(--primary-color);
  color: var(--white);
  transform: translateY(-1px);
}

.btn-outline {
  background-color: transparent;
  color: var(--text-primary);
  border-color: var(--gray-300);
}

.btn-outline:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
  transform: translateY(-1px);
}

.btn-whatsapp {
  background: linear-gradient(135deg, var(--whatsapp-color), #20ba5a);
  color: var(--white);
  border-color: var(--whatsapp-color);
  gap: var(--space-2);
  position: relative;
  overflow: hidden;
}

.btn-whatsapp:hover {
  background: linear-gradient(135deg, #128c7e, var(--whatsapp-color));
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 12px 30px rgba(37, 211, 102, 0.4);
}

.btn-whatsapp:active {
  transform: translateY(-1px) scale(1.02);
}

.whatsapp-icon {
  font-size: var(--font-size-lg);
  transition: transform 0.3s ease;
}

.btn-whatsapp:hover .whatsapp-icon {
  transform: scale(1.2) rotate(5deg);
}

/* ===== NAVIGATION ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-200);
  transition: var(--transition-all);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.site-logo {
  display: flex;
  align-items: center;
  height: 56px;
  padding: 0;
}

.logo-img {
  height: 44px;
  width: auto;
  max-width: 180px;
  min-width: 80px;
  object-fit: contain;
  display: block;
  transition: filter 0.2s;
}

@media (max-width: 768px) {
  .site-logo {
    height: 40px;
  }
  .logo-img {
    height: 32px;
    max-width: 120px;
    min-width: 48px;
  }
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: var(--space-2) 0;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-color);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: var(--space-2);
}

.bar {
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  margin: 2px 0;
  transition: 0.3s;
}

/* ===== HERO SECTION ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
  padding: var(--space-20) 0 var(--space-16);
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.hero-content {
  max-width: 550px;
}

.hero-greeting {
  display: block;
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

.hero-name {
  display: block;
  font-size: var(--font-size-5xl);
  font-weight: 700;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--accent-color)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.025em;
  margin-bottom: var(--space-2);
}

@keyframes gradient-shift {
  0% {
    background: linear-gradient(
      135deg,
      var(--primary-color),
      var(--accent-color)
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }
  100% {
    background: linear-gradient(
      135deg,
      var(--accent-color),
      var(--primary-color)
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-subtitle {
  font-size: var(--font-size-2xl);
  color: var(--primary-color);
  font-weight: 500;
  margin-bottom: var(--space-3);
}

.hero-tagline {
  font-size: var(--font-size-lg);
  color: var(--accent-color);
  font-weight: 500;
  margin-bottom: var(--space-6);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: var(--font-size-sm);
}

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-8);
}

.hero-buttons {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.hero-image {
  position: relative;
}

.hero-image img {
  width: 100%;
  height: 500px;
  object-fit: cover;
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-xl);
}

.hero-scroll {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
}

.scroll-indicator {
  display: block;
  width: 30px;
  height: 50px;
  border: 2px solid var(--text-light);
  border-radius: 25px;
  position: relative;
}

.scroll-indicator span {
  position: absolute;
  top: 8px;
  left: 50%;
  width: 4px;
  height: 8px;
  background-color: var(--text-light);
  border-radius: 2px;
  transform: translateX(-50%);
  animation: scroll 2s infinite;
}

@keyframes scroll {
  0% {
    opacity: 0;
    transform: translateX(-50%) translateY(0);
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translateX(-50%) translateY(15px);
  }
}

/* ===== ABOUT SECTION ===== */
.about {
  padding: var(--space-24) 0;
  background-color: var(--white);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.about-intro {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-8);
}

.skills-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-6);
}

.skills-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.skill-item {
  text-align: center;
  padding: var(--space-4);
}

.skill-icon {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-3);
}

.skill-item h4 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.skill-item p {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.about-image {
  position: relative;
}

.about-image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-lg);
}

/* ===== PRODUCT CATEGORIES SECTION ===== */
.product-categories {
  padding: var(--space-24) 0;
  background-color: var(--gray-50);
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-8);
  margin-top: var(--space-16);
}

.category-card {
  background-color: var(--white);
  padding: var(--space-8);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-md);
  text-align: center;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  border: 1px solid var(--gray-200);
  transform-origin: center;
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--primary-dark)
  );
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 0;
}

.category-card:hover::before {
  opacity: 0.05;
}

.category-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-color);
}

.category-slideshow {
  position: relative;
  width: 100%;
  height: 200px;
  margin: 0 auto var(--space-6);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  background-color: var(--gray-100);
  box-shadow: var(--shadow-md);
}

.slideshow-container {
  position: relative;
  width: 100%;
  height: 100%;
}

.slide-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.5s ease-in-out;
  border-radius: var(--border-radius-lg);
}

.slide-image.active {
  opacity: 1;
}

.slideshow-dots {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 2;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: all 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.8);
}

.dot.active,
.dot:hover {
  background-color: var(--white);
  transform: scale(1.2);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.category-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  line-height: 1.3;
  position: relative;
  z-index: 1;
}

.category-description {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-6);
  position: relative;
  z-index: 1;
}

.category-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--primary-color);
  text-decoration: none;
  transition: var(--transition-all);
  position: relative;
  z-index: 1;
}

.category-link:hover {
  color: var(--primary-dark);
  transform: translateX(4px);
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .categories-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .category-card {
    padding: var(--space-6);
  }

  .category-slideshow {
    height: 180px;
  }

  .category-title {
    font-size: var(--font-size-lg);
  }
}

/* ===== SERVICES SECTION ===== */
.services {
  padding: var(--space-24) 0;
  background-color: var(--white);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-8);
}

.service-card {
  background-color: var(--white);
  padding: var(--space-8);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-md);
  text-align: center;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  border: 1px solid var(--gray-200);
  transform-origin: center;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--accent-color)
  );
  opacity: 0;
  transition: opacity 0.4s ease;
  border-radius: var(--border-radius-xl);
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(29, 78, 216, 0.15);
  border-color: var(--primary-color);
}

.service-card:hover::before {
  opacity: 0.05;
}

.service-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--primary-dark)
  );
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-6);
}

.service-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.service-description {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-6);
}

.service-price {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--primary-color);
}

/* ===== CONTACT SECTION ===== */
.contact {
  padding: var(--space-24) 0;
  background-color: var(--gray-50);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

.contact-info h3 {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.contact-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-8);
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.contact-icon {
  font-size: var(--font-size-xl);
  width: 50px;
  height: 50px;
  background-color: var(--primary-color);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-item h4 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.contact-item a {
  color: var(--primary-color);
}

.contact-item a:hover {
  text-decoration: underline;
}

.contact-form-wrapper {
  background-color: var(--white);
  padding: var(--space-8);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-lg);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

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

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group label {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.form-group input,
.form-group textarea {
  padding: var(--space-3);
  border: 1px solid var(--gray-300);
  border-radius: var(--border-radius);
  font-size: var(--font-size-base);
  transition: var(--transition-colors);
  background-color: var(--white);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* ===== FOOTER ===== */
.footer {
  background-color: var(--gray-900);
  color: var(--gray-300);
  padding: var(--space-12) 0;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.social-links {
  display: flex;
  gap: var(--space-4);
}

.social-links a {
  color: var(--gray-400);
  transition: var(--transition-colors);
  padding: var(--space-2);
}

.social-links a:hover {
  color: var(--primary-color);
}

/* ===== LIGHTBOX ===== */
.lightbox {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.9);
  z-index: 10000;
  overflow: auto;
}

.lightbox-content {
  position: relative;
  margin: auto;
  padding: var(--space-8);
  max-width: 90%;
  max-height: 90%;
  margin-top: 5%;
}

.lightbox-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  color: var(--white);
  font-size: var(--font-size-3xl);
  font-weight: bold;
  cursor: pointer;
  z-index: 10001;
  background: rgba(0, 0, 0, 0.5);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-all);
}

.lightbox-close:hover {
  background: rgba(0, 0, 0, 0.8);
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  width: 100%;
  display: flex;
  justify-content: space-between;
  padding: 0 var(--space-4);
  z-index: 10001;
  pointer-events: none;
}

.lightbox-prev,
.lightbox-next {
  background: rgba(0, 0, 0, 0.5);
  color: var(--white);
  border: none;
  font-size: var(--font-size-2xl);
  padding: var(--space-4);
  border-radius: 50%;
  cursor: pointer;
  transition: var(--transition-all);
  pointer-events: all;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-prev:hover,
.lightbox-next:hover {
  background: rgba(0, 0, 0, 0.8);
}

.lightbox-image-container {
  text-align: center;
  margin-bottom: var(--space-6);
}

.lightbox-image-container img,
.lightbox-image-container video {
  max-width: 100%;
  max-height: 70vh;
  object-fit: contain;
  border-radius: var(--border-radius);
}

.lightbox-info {
  text-align: center;
  color: var(--white);
}

.lightbox-info h3 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-2);
}

.lightbox-info p {
  font-size: var(--font-size-base);
  color: var(--gray-300);
  margin-bottom: var(--space-2);
}

.lightbox-info span {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background: var(--primary-color);
  color: var(--white);
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
  .hero-container,
  .about-content,
  .contact-content {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }

  .hero-image {
    order: -1;
  }

  .hero-image img {
    height: 400px;
  }

  .services-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }

  .portfolio-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    left: -100%;
    top: 70px;
    flex-direction: column;
    background-color: var(--white);
    width: 100%;
    text-align: center;
    transition: 0.3s;
    box-shadow: var(--shadow-lg);
    padding: var(--space-8) 0;
    gap: var(--space-6);
  }

  .nav-menu.active {
    left: 0;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-toggle.active .bar:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.active .bar:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  .nav-toggle.active .bar:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .section-title {
    font-size: var(--font-size-3xl);
  }

  .hero-name {
    font-size: var(--font-size-4xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-xl);
  }

  .hero-description {
    font-size: var(--font-size-base);
  }

  .hero-buttons {
    justify-content: center;
  }

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

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-content {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }

  .container {
    padding: 0 var(--space-4);
  }

  .lightbox-content {
    padding: var(--space-4);
    max-width: 95%;
  }

  .lightbox-nav {
    padding: 0 var(--space-2);
  }

  .lightbox-prev,
  .lightbox-next {
    width: 40px;
    height: 40px;
    font-size: var(--font-size-xl);
  }
}

@media (max-width: 480px) {
  .portfolio-grid {
    grid-template-columns: 1fr;
  }

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

  .hero-buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }

  .service-card {
    padding: var(--space-6);
  }

  .contact-form-wrapper {
    padding: var(--space-6);
  }
}

/* ===== ADVANCED ANIMATIONS ===== */
/* Floating Animation for Hero Image */
@keyframes float {
  0%,
  100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

.hero-image img {
  animation: float 6s ease-in-out infinite;
}

/* Pulse Animation for CTA Buttons */
@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(29, 78, 216, 0.4);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(29, 78, 216, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(29, 78, 216, 0);
  }
}

.btn-primary {
  animation: pulse 2s infinite;
}

/* Stagger Animation for Service Cards */
.service-card:nth-child(1) {
  animation-delay: 0.1s;
}

.service-card:nth-child(2) {
  animation-delay: 0.2s;
}

.service-card:nth-child(3) {
  animation-delay: 0.3s;
}

/* Gradient Text Animation for Company Name */
@keyframes gradient {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.hero-name {
  background: linear-gradient(
    -45deg,
    var(--primary-color),
    var(--accent-color),
    var(--primary-dark),
    var(--accent-color)
  );
  background-size: 400% 400%;
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradient 8s ease infinite;
}

/* Smooth hover transitions for service cards */
.service-card {
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(29, 78, 216, 0.1),
    transparent
  );
  transition: left 0.8s;
}

.service-card:hover::before {
  left: 100%;
}

/* Enhanced Form Styling */
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.1);
  transform: translateY(-1px);
}

/* Typewriter Animation for Tagline */
@keyframes typewriter {
  from {
    width: 0;
  }
  to {
    width: 100%;
  }
}

@keyframes blinkCaret {
  from,
  to {
    border-color: transparent;
  }
  50% {
    border-color: var(--accent-color);
  }
}

.hero-tagline {
  overflow: hidden;
  border-right: 2px solid var(--accent-color);
  white-space: nowrap;
  animation: typewriter 3s steps(40, end) 1s 1 normal both,
    blinkCaret 500ms steps(40, end) infinite;
  max-width: 100%;
}

/* Loading Animation for Contact Form */
.btn[disabled] {
  position: relative;
  color: transparent;
}

.btn[disabled]::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  top: 50%;
  left: 50%;
  margin-left: -8px;
  margin-top: -8px;
  border: 2px solid transparent;
  border-top-color: var(--white);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* Portfolio/Product Card Hover Effects */
.portfolio-item {
  position: relative;
}

.portfolio-item::after {
  content: "⚡";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: var(--font-size-3xl);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 2;
  color: var(--white);
}

.portfolio-item:hover::after {
  opacity: 1;
}

/* Smooth Section Transitions */
section {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease;
}

section.visible {
  opacity: 1;
  transform: translateY(0);
}

/* WhatsApp Floating Button */
.whatsapp-float {
  position: fixed;
  width: 60px;
  height: 60px;
  bottom: 30px;
  right: 30px;
  background-color: var(--whatsapp-color);
  color: white;
  border-radius: 50%;
  text-align: center;
  font-size: 30px;
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: all 0.3s ease;
  animation: bounce 2s infinite;
}

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

/* Floating WhatsApp Button */
.whatsapp-float {
  position: fixed;
  width: 60px;
  height: 60px;
  bottom: 30px;
  right: 30px;
  background: #25d366;
  color: white;
  border-radius: 50%;
  text-align: center;
  font-size: 30px;
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: all 0.3s ease;
}

.whatsapp-float:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
  background: #128c7e;
  color: white;
  text-decoration: none;
}

@keyframes pulse-whatsapp {
  0% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(37, 211, 102, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
  }
}

/* Section Reveal Animations */
section {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

section.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Notification System */
.notification {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 15px 20px;
  border-radius: 8px;
  color: white;
  font-weight: 500;
  z-index: 9999;
  min-width: 300px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  animation: slideIn 0.3s ease-out;
}

.notification.success {
  background: var(--green-600);
}

.notification.error {
  background: var(--red-600);
}

.notification.info {
  background: var(--blue-600);
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes bounce {
  0%,
  20%,
  53%,
  80%,
  100% {
    transform: translateY(0);
  }
  40%,
  43% {
    transform: translateY(-10px);
  }
  70% {
    transform: translateY(-5px);
  }
  90% {
    transform: translateY(-2px);
  }
}

/* ===== PARTNERS SECTION ===== */
.partners {
  padding: var(--space-20) 0;
  background: var(--gray-50);
  overflow: hidden;
}

.partners-carousel {
  position: relative;
  width: 100%;
  overflow: hidden;
  margin-top: var(--space-12);
}

.partners-track {
  display: flex;
  width: 200%;
  animation: partnerScroll 30s linear infinite;
}

.partner-item {
  flex: 0 0 12.5%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  transition: transform 0.3s ease;
}

.partner-item:hover {
  transform: scale(1.05);
}

.partner-item img {
  max-width: 120px;
  max-height: 60px;
  width: auto;
  height: auto;
  object-fit: contain;
  filter: grayscale(100%) opacity(0.7);
  transition: all 0.3s ease;
}

.partner-item:hover img {
  filter: grayscale(0%) opacity(1);
}

@keyframes partnerScroll {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

/* ===== REVIEWS SECTION ===== */
.reviews {
  padding: var(--space-20) 0;
  background: var(--white);
}

.reviews-carousel {
  position: relative;
  margin-top: var(--space-12);
}

.reviews-container {
  position: relative;
  overflow: hidden;
  border-radius: 16px;
  max-width: 800px;
  margin: 0 auto;
}

.review-card {
  display: none;
  text-align: center;
  padding: var(--space-12);
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 16px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  animation: fadeInSlide 0.6s ease-out;
}

.review-card.active {
  display: block;
}

.review-rating {
  margin-bottom: var(--space-6);
}

.star {
  color: #fbbf24;
  font-size: var(--font-size-xl);
  margin: 0 2px;
}

.review-text {
  font-size: var(--font-size-lg);
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: var(--space-8);
  font-style: italic;
  position: relative;
}

.review-text::before {
  content: '"';
  font-size: 3rem;
  color: var(--primary-color);
  position: absolute;
  top: -10px;
  left: -20px;
  font-family: serif;
}

.review-text::after {
  content: '"';
  font-size: 3rem;
  color: var(--primary-color);
  position: absolute;
  bottom: -40px;
  right: -20px;
  font-family: serif;
}

.review-author {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
}

.author-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--primary-color);
}

.author-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.author-info h4 {
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 var(--space-1) 0;
  font-size: var(--font-size-lg);
}

.author-info p {
  color: var(--text-light);
  margin: 0;
  font-size: var(--font-size-sm);
}

.reviews-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  margin-top: var(--space-8);
}

.review-prev,
.review-next {
  background: var(--primary-color);
  color: var(--white);
  border: none;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  font-size: var(--font-size-2xl);
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.review-prev:hover,
.review-next:hover {
  background: var(--primary-dark);
  transform: scale(1.1);
}

.review-indicators {
  display: flex;
  gap: var(--space-2);
}

.indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: none;
  background: var(--gray-300);
  cursor: pointer;
  transition: all 0.3s ease;
}

.indicator.active,
.indicator:hover {
  background: var(--primary-color);
  transform: scale(1.2);
}

@keyframes fadeInSlide {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive Partners & Reviews */
@media (max-width: 768px) {
  .partners {
    padding: var(--space-16) 0;
  }

  .partner-item {
    flex: 0 0 25%;
  }

  .partner-item img {
    max-width: 80px;
    max-height: 40px;
  }

  .reviews {
    padding: var(--space-16) 0;
  }

  .review-card {
    padding: var(--space-8);
    margin: 0 var(--space-4);
  }

  .review-text {
    font-size: var(--font-size-base);
  }

  .review-text::before,
  .review-text::after {
    font-size: 2rem;
  }

  .author-avatar {
    width: 50px;
    height: 50px;
  }

  .reviews-nav {
    gap: var(--space-4);
  }

  .review-prev,
  .review-next {
    width: 40px;
    height: 40px;
    font-size: var(--font-size-xl);
  }
}

/* Responsive Animations */
@media (max-width: 768px) {
  .hero-tagline {
    animation: none;
    border-right: none;
    white-space: normal;
  }

  .btn-primary {
    animation: none;
  }

  .hero-image img {
    animation: none;
  }
}