/* TaxEase - Tax Automation SaaS Website Styles */

/* ===== VARIABLES ===== */
:root {
  /* Primary Colors */
  --primary: #2563eb;      /* Primary blue */
  --primary-dark: #1e40af; /* Darker blue for hover states */
  --secondary: #10b981;    /* Secondary green accent */
  --secondary-dark: #059669; /* Darker green for hover states */
  
  /* Neutral Colors */
  --dark: #1f2937;         /* Near black for text */
  --gray-dark: #4b5563;    /* Dark gray for secondary text */
  --gray-medium: #9ca3af;  /* Medium gray for borders */
  --gray-light: #e5e7eb;   /* Light gray for backgrounds */
  --light: #f9fafb;        /* Off-white for backgrounds */
  --white: #ffffff;        /* Pure white */
  
  /* Accent Colors */
  --accent-blue: #3b82f6;  /* Accent blue for highlights */
  --accent-green: #34d399; /* Accent green for success states */
  --accent-red: #ef4444;   /* Accent red for errors/alerts */
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', sans-serif;
  --font-secondary: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', sans-serif;
  
  /* Spacing */
  --space-xs: 0.25rem;   /* 4px */
  --space-sm: 0.5rem;    /* 8px */
  --space-md: 1rem;      /* 16px */
  --space-lg: 1.5rem;    /* 24px */
  --space-xl: 2rem;      /* 32px */
  --space-2xl: 3rem;     /* 48px */
  --space-3xl: 4rem;     /* 64px */
  
  /* Border Radius */
  --radius-sm: 0.25rem;  /* 4px */
  --radius-md: 0.5rem;   /* 8px */
  --radius-lg: 0.75rem;  /* 12px */
  --radius-xl: 1rem;     /* 16px */
  --radius-full: 9999px; /* Fully rounded */
  
  /* 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;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;
  
  /* Container Widths */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
}

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

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

body {
  font-family: var(--font-primary);
  color: var(--dark);
  background-color: var(--light);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
}

input, button, textarea, select {
  font: inherit;
}

p, h1, h2, h3, h4, h5, h6 {
  overflow-wrap: break-word;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-secondary);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-md);
  color: var(--dark);
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.75rem;
}

h4 {
  font-size: 1.5rem;
}

h5 {
  font-size: 1.25rem;
}

h6 {
  font-size: 1rem;
}

p {
  margin-bottom: var(--space-md);
}

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

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

/* ===== LAYOUT ===== */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section {
  padding: var(--space-2xl) 0;
}

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

.section-subtitle {
  text-align: center;
  color: var(--gray-dark);
  font-size: 1.125rem;
  margin-top: -0.75rem;
  margin-bottom: var(--space-xl);
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--space-md);
}

.grid-2 {
  grid-template-columns: 1fr;
}

.grid-3 {
  grid-template-columns: 1fr;
}

.grid-4 {
  grid-template-columns: 1fr;
}

/* Flex Utilities */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

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

.gap-sm {
  gap: var(--space-sm);
}

.gap-md {
  gap: var(--space-md);
}

.gap-lg {
  gap: var(--space-lg);
}

/* ===== COMPONENTS ===== */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.25rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  cursor: pointer;
  text-align: center;
  border: none;
  line-height: 1;
}

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

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

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

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

.btn-outline {
  background-color: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
}

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

.btn-lg {
  padding: 0.75rem 1.5rem;
  font-size: 1.125rem;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

/* Cards */
.card {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-lg);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

/* Feature Cards */
.feature-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: var(--space-xl);
  background-color: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-md);
  background-color: rgba(37, 99, 235, 0.1);
  color: var(--primary);
  margin-bottom: var(--space-md);
}

.feature-title {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

/* Pricing Cards */
.pricing-card {
  display: flex;
  flex-direction: column;
  background-color: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-xl);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  height: 100%;
}

.pricing-card.popular {
  border: 2px solid var(--primary);
  position: relative;
}

.popular-tag {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--primary);
  color: var(--white);
  padding: 0.25rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
}

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

.pricing-name {
  font-size: 1.5rem;
  margin-bottom: var(--space-xs);
}

.pricing-description {
  color: var(--gray-dark);
  font-size: 0.875rem;
}

.pricing-price {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.pricing-period {
  color: var(--gray-dark);
  font-size: 0.875rem;
}

.pricing-features {
  margin: var(--space-lg) 0;
  flex-grow: 1;
}

.pricing-feature {
  display: flex;
  align-items: center;
  margin-bottom: var(--space-sm);
}

.pricing-feature-icon {
  color: var(--secondary);
  margin-right: var(--space-sm);
}

.pricing-cta {
  margin-top: auto;
}

/* Testimonial Cards */
.testimonial-card {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-lg);
}

.testimonial-content {
  font-style: italic;
  margin-bottom: var(--space-md);
}

.testimonial-author {
  display: flex;
  align-items: center;
}

.testimonial-avatar {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  object-fit: cover;
  margin-right: var(--space-sm);
}

.testimonial-info h5 {
  margin-bottom: 0;
  font-size: 1rem;
}

.testimonial-info p {
  margin-bottom: 0;
  color: var(--gray-dark);
  font-size: 0.875rem;
}

/* ===== HEADER & NAVIGATION ===== */
.header {
  background-color: var(--white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: var(--space-md) 0;
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--dark);
  display: flex;
  align-items: center;
}

.logo span {
  color: var(--primary);
}

.nav-menu {
  display: none;
  list-style: none;
}

.nav-item {
  margin-left: var(--space-lg);
}

.nav-link {
  color: var(--dark);
  font-weight: 500;
  transition: color var(--transition-fast);
}

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

.nav-buttons {
  display: flex;
  gap: var(--space-sm);
}

.mobile-menu-btn {
  display: block;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.5rem;
  color: var(--dark);
}

.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--white);
  z-index: 200;
  padding: var(--space-xl);
  transform: translateX(-100%);
  transition: transform var(--transition-normal);
}

.mobile-menu.active {
  transform: translateX(0);
}

.mobile-menu-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
}

.mobile-nav {
  list-style: none;
  margin-top: var(--space-2xl);
}

.mobile-nav-item {
  margin-bottom: var(--space-lg);
}

.mobile-nav-link {
  font-size: 1.25rem;
  font-weight: 500;
}

/* ===== HERO SECTION ===== */
.hero {
  padding: var(--space-3xl) 0;
  background-color: var(--light);
  position: relative;
  overflow: hidden;
}

.hero-content {
  max-width: 600px;
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: 3rem;
  margin-bottom: var(--space-md);
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--gray-dark);
  margin-bottom: var(--space-lg);
}

.hero-cta {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.hero-image {
  position: relative;
  z-index: 1;
}

/* ===== FEATURES SECTION ===== */
.features {
  background-color: var(--white);
}

/* ===== PRICING SECTION ===== */
.pricing {
  background-color: var(--light);
}

.pricing-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-xl);
}

.pricing-toggle-text {
  font-weight: 500;
}

.pricing-toggle-btn {
  position: relative;
  width: 3.5rem;
  height: 1.75rem;
  border-radius: var(--radius-full);
  background-color: var(--primary);
  margin: 0 var(--space-sm);
  cursor: pointer;
}

.pricing-toggle-slider {
  position: absolute;
  top: 0.25rem;
  left: 0.25rem;
  width: 1.25rem;
  height: 1.25rem;
  border-radius: 50%;
  background-color: var(--white);
  transition: transform var(--transition-normal);
}

.pricing-toggle-slider.yearly {
  transform: translateX(1.75rem);
}

.pricing-save {
  display: inline-block;
  background-color: rgba(16, 185, 129, 0.1);
  color: var(--secondary);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  margin-left: var(--space-sm);
}

/* ===== TESTIMONIALS SECTION ===== */
.testimonials {
  background-color: var(--white);
}

/* ===== PARTNERS SECTION ===== */
.partners {
  background-color: var(--light);
  padding: var(--space-xl) 0;
}

.partners-title {
  text-align: center;
  font-size: 1rem;
  color: var(--gray-dark);
  margin-bottom: var(--space-lg);
}

.partners-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--space-xl);
}

.partner-logo {
  height: 2.5rem;
  opacity: 0.7;
  transition: opacity var(--transition-normal);
}

.partner-logo:hover {
  opacity: 1;
}

/* ===== CTA SECTION ===== */
.cta {
  background-color: var(--primary);
  color: var(--white);
  padding: var(--space-2xl) 0;
}

.cta-content {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.cta-title {
  color: var(--white);
}

.cta-text {
  margin-bottom: var(--space-lg);
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

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

.btn-cta:hover {
  background-color: rgba(255, 255, 255, 0.9);
  color: var(--primary-dark);
}

.btn-cta-outline {
  background-color: transparent;
  border: 1px solid var(--white);
  color: var(--white);
}

.btn-cta-outline:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

/* ===== FOOTER ===== */
.footer {
  background-color: var(--dark);
  color: var(--gray-light);
  padding: var(--space-2xl) 0 var(--space-lg);
}

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

.footer-logo {
  color: var(--white);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
  display: inline-block;
}

.footer-logo span {
  color: var(--primary);
}

.footer-description {
  color: var(--gray-medium);
  margin-bottom: var(--space-md);
}

.footer-social {
  display: flex;
  gap: var(--space-md);
}

.footer-social-link {
  color: var(--gray-medium);
  transition: color var(--transition-fast);
}

.footer-social-link:hover {
  color: var(--white);
}

.footer-heading {
  color: var(--white);
  font-size: 1.125rem;
  margin-bottom: var(--space-md);
}

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

.footer-link {
  margin-bottom: var(--space-sm);
}

.footer-link a {
  color: var(--gray-medium);
  transition: color var(--transition-fast);
}

.footer-link a:hover {
  color: var(--white);
}

.footer-contact-item {
  display: flex;
  align-items: center;
  margin-bottom: var(--space-sm);
}

.footer-contact-icon {
  margin-right: var(--space-sm);
  color: var(--primary);
}

.footer-bottom {
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}

.footer-copyright {
  color: var(--gray-medium);
  font-size: 0.875rem;
}

/* ===== RESPONSIVE STYLES ===== */
@media (min-width: 640px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .partners-grid {
    gap: var(--space-2xl);
  }
  
  .partner-logo {
    height: 2.5rem;
  }
}

@media (min-width: 768px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .hero {
    padding: var(--space-3xl) 0;
  }
  
  .hero-title {
    font-size: 3.5rem;
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .mobile-menu-btn {
    display: none;
  }
  
  .nav-menu {
    display: flex;
    align-items: center;
  }
  
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .hero {
    padding: var(--space-3xl) 0;
  }
  
  .hero-content {
    max-width: 500px;
  }
  
  .hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: var(--space-xl);
  }
  
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

@media (min-width: 1280px) {
  .hero-title {
    font-size: 4rem;
  }
}