/* ============================================
   STORECALL-INSPIRED DESIGN SYSTEM - Sensorytics
   Clean, Professional, Modern
   ============================================ */

/* CSS Custom Properties (Design Tokens) */
:root {
  /* Color Palette - Storecall-inspired Blue & White */
  --color-primary: #2563eb;      /* Primary Blue */
  --color-primary-dark: #1e40af;
  --color-primary-light: #60a5fa;
  --color-primary-lighter: #dbeafe;
  
  /* Neutral Colors */
  --color-text-primary: #1f2937;
  --color-text-secondary: #4b5563;
  --color-text-light: #9ca3af;
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f9fafb;
  --color-bg-tertiary: #f3f4f6;
  --color-bg-alternate: #f0f9ff;
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-heading: 'Inter', var(--font-primary);
  
  /* Font Sizes */
  --text-xs: 0.75rem;      /* 12px */
  --text-sm: 0.875rem;     /* 14px */
  --text-base: 1rem;       /* 16px */
  --text-lg: 1.125rem;     /* 18px */
  --text-xl: 1.25rem;      /* 20px */
  --text-2xl: 1.5rem;      /* 24px */
  --text-3xl: 1.875rem;    /* 30px */
  --text-4xl: 2.25rem;     /* 36px */
  --text-5xl: 3rem;        /* 48px */
  --text-6xl: 3.75rem;     /* 60px */
  
  /* Spacing Scale */
  --spacing-xs: 0.5rem;    /* 8px */
  --spacing-sm: 0.75rem;   /* 12px */
  --spacing-md: 1rem;      /* 16px */
  --spacing-lg: 1.5rem;    /* 24px */
  --spacing-xl: 2rem;      /* 32px */
  --spacing-2xl: 3rem;     /* 48px */
  --spacing-3xl: 4rem;     /* 64px */
  --spacing-4xl: 5rem;     /* 80px */
  --spacing-5xl: 6rem;     /* 96px */
  
  /* Border Radius - Rounded corners */
  --radius-sm: 0.375rem;   /* 6px */
  --radius-md: 0.5rem;     /* 8px */
  --radius-lg: 0.75rem;    /* 12px */
  --radius-xl: 1rem;       /* 16px */
  --radius-2xl: 1.5rem;    /* 24px */
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --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-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
  
  /* Container */
  --container-max-width: 1280px;
  --container-padding: var(--spacing-lg);
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */

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

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

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--text-5xl); font-weight: 700; }
h2 { font-size: var(--text-4xl); font-weight: 700; }
h3 { font-size: var(--text-3xl); font-weight: 600; }
h4 { font-size: var(--text-2xl); font-weight: 600; }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-dark);
}

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

.highlight {
  color: var(--color-primary);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ============================================
   NAVIGATION - Fixed Top Bar
   ============================================ */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
  transition: all var(--transition-base);
}

.navbar.scrolled {
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.navbar-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--container-padding);
  max-width: var(--container-max-width);
  margin: 0 auto;
}

.navbar-logo {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.navbar-logo:hover {
  color: var(--color-primary-dark);
}

.navbar-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
  list-style: none;
}

.navbar-link {
  font-weight: 500;
  font-size: var(--text-base);
  color: var(--color-text-primary);
  transition: color var(--transition-fast);
  position: relative;
}

.navbar-link:hover {
  color: var(--color-primary);
}

.navbar-cta .btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--text-sm);
}

.navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.navbar-toggle span {
  width: 25px;
  height: 3px;
  background: var(--color-text-primary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
}

.navbar-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.navbar-toggle.active span:nth-child(2) {
  opacity: 0;
}

.navbar-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* Mobile Menu */
@media (max-width: 768px) {
  .navbar-menu {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--color-bg-primary);
    flex-direction: column;
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    transform: translateX(-100%);
    transition: transform var(--transition-base);
    gap: var(--spacing-lg);
    align-items: flex-start;
  }
  
  .navbar-menu.active {
    transform: translateX(0);
  }
  
  .navbar-toggle {
    display: flex;
  }
  
  .navbar-cta {
    width: 100%;
  }
  
  .navbar-cta .btn {
    width: 100%;
    text-align: center;
  }
}

/* ============================================
   BUTTONS - Rounded, Blue
   ============================================ */

.btn {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-xl);
  font-weight: 600;
  font-size: var(--text-base);
  text-align: center;
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  line-height: 1.5;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
  box-shadow: 0 4px 6px -1px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 12px -2px rgba(37, 99, 235, 0.4);
  color: white;
}

.btn-secondary {
  background: white;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
  background: var(--color-primary-lighter);
  color: var(--color-primary-dark);
}

.btn-lg {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: var(--text-lg);
}

.btn-block {
  width: 100%;
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
  padding: calc(var(--spacing-5xl) + 60px) var(--container-padding) var(--spacing-5xl);
  background: linear-gradient(to bottom, var(--color-bg-alternate) 0%, var(--color-bg-primary) 100%);
  position: relative;
  overflow: hidden;
}

.hero-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-4xl);
  align-items: center;
}

.hero-content {
  text-align: center;
}

.hero-title {
  font-size: var(--text-4xl);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-primary);
}

.hero-subtitle {
  font-size: var(--text-xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-2xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

.hero-cta-group {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

.hero-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.hero-image img {
  width: 100%;
  height: auto;
  display: block;
}

@media (min-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-5xl);
  }
  
  .hero-content {
    text-align: left;
  }
  
  .hero-title {
    font-size: var(--text-6xl);
  }
  
  .hero-subtitle {
    margin-left: 0;
    margin-right: 0;
  }
  
  .hero-cta-group {
    justify-content: flex-start;
  }
}

/* ============================================
   SECTIONS - Alternating Backgrounds
   ============================================ */

.section {
  padding: var(--spacing-5xl) var(--container-padding);
}

.section-alt {
  background-color: var(--color-bg-secondary);
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-lg);
  font-weight: 700;
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-secondary);
  font-size: var(--text-lg);
  max-width: 800px;
  margin: 0 auto var(--spacing-3xl);
  line-height: 1.7;
}

.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, #e5e7eb, transparent);
  margin: 0;
  border: none;
}

/* ============================================
   CARDS
   ============================================ */

.card {
  background: var(--color-bg-primary);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  height: 100%;
  border: 1px solid #e5e7eb;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-light);
}

.card-icon {
  width: 64px;
  height: 64px;
  background: var(--color-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
}

.card-icon img {
  width: 32px;
  height: 32px;
  filter: brightness(0) invert(1);
}

.card-icon svg {
  width: 32px;
  height: 32px;
  color: white;
  stroke: currentColor;
}

.card-title {
  font-size: var(--text-2xl);
  margin-bottom: var(--spacing-md);
  font-weight: 600;
}

.card-text {
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
}

@media (min-width: 768px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ============================================
   PORTFOLIO SLIDESHOW
   ============================================ */

.portfolio-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-2xl);
}

@media (min-width: 768px) {
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .portfolio-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.portfolio-item {
  background: var(--color-bg-primary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  border: 1px solid #e5e7eb;
}

.portfolio-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.slideshow-container {
  position: relative;
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
}

.slideshow-slide {
  display: none;
  width: 100%;
  height: auto;
}

.slideshow-slide.active {
  display: block;
}

.slideshow-slide img {
  width: 100%;
  height: auto;
  display: block;
}

.slideshow-controls {
  position: absolute;
  bottom: var(--spacing-lg);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--spacing-sm);
  z-index: 10;
}

.slideshow-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.9);
  color: var(--color-text-primary);
  border: none;
  padding: var(--spacing-md);
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
  z-index: 10;
  font-size: var(--text-xl);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.slideshow-nav:hover {
  background: white;
}

.slideshow-nav.prev {
  left: var(--spacing-md);
}

.slideshow-nav.next {
  right: var(--spacing-md);
}

.slideshow-dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.5);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.slideshow-dot.active {
  background: white;
  transform: scale(1.3);
}

.portfolio-item-title {
  padding: var(--spacing-lg);
  font-size: var(--text-xl);
  font-weight: 600;
}

.portfolio-item-title .highlight {
  color: var(--color-primary);
}

/* ============================================
   TESTIMONIALS
   ============================================ */

.testimonials {
  background: var(--color-bg-secondary);
  padding: var(--spacing-5xl) var(--container-padding);
}

.testimonial-card {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-md);
  text-align: center;
  position: relative;
  margin-top: var(--spacing-xl);
  border: 1px solid #e5e7eb;
}

.testimonial-avatar {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-full);
  border: 4px solid white;
  margin: 0 auto;
  position: absolute;
  top: -40px;
  left: 50%;
  transform: translateX(-50%);
  box-shadow: var(--shadow-md);
}

.testimonial-quote {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  font-style: italic;
  margin: var(--spacing-xl) 0 var(--spacing-lg);
  line-height: 1.7;
}

.testimonial-author {
  font-weight: 600;
  color: var(--color-text-primary);
}

.testimonial-role {
  font-size: var(--text-sm);
  color: var(--color-text-light);
  margin-top: var(--spacing-xs);
}

/* ============================================
   FOOTER - Multi-column
   ============================================ */

.footer {
  background: var(--color-text-primary);
  color: white;
  padding: var(--spacing-4xl) var(--container-padding) var(--spacing-xl);
}

.footer-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-3xl);
}

.footer-section h3 {
  color: white;
  margin-bottom: var(--spacing-lg);
  font-weight: 600;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-sm);
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
  font-size: var(--text-sm);
}

.footer-links a:hover {
  color: white;
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--text-sm);
}

@media (min-width: 768px) {
  .footer-content {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ============================================
   WHATSAPP FLOAT BUTTON
   ============================================ */

.whatsapp-float {
  position: fixed;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  z-index: 999;
  width: 60px;
  height: 60px;
  border-radius: var(--radius-full);
  background: #25d366;
  box-shadow: var(--shadow-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  cursor: pointer;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-xl);
}

.whatsapp-float img {
  width: 40px;
  height: 40px;
}

@media (max-width: 768px) {
  .whatsapp-float {
    width: 50px;
    height: 50px;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
  }
  
  .whatsapp-float img {
    width: 32px;
    height: 32px;
  }
}

/* ============================================
   ANIMATIONS
   ============================================ */

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

.fade-in {
  animation: fadeIn 0.6s ease-out;
}

[data-animate] {
  opacity: 0;
}

[data-animate].fade-in {
  opacity: 1;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }
.mt-2xl { margin-top: var(--spacing-2xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }
.mb-2xl { margin-bottom: var(--spacing-2xl); }