/* ===== CSS VARIABLES ===== */
:root {
  /* Colors */
  --primary-color: #1C1F4A;
  --primary-dark: #4D2D7C;
  --accent-purple: #A13CAF;
  --accent-pink: #CC61A6;
  --accent-rose: #DD929F;
  --highlight-color: #EED0C4;
  --text-primary: #1C1F4A;
  --text-secondary: #2E2E2E;
  --text-light: #6B7280;
  --white: #FFFFFF;
  --background: #FAFAFA;
  --neutral-light: #F8F9FA;
  --neutral-medium: #E9ECEF;
  --neutral-dark: #6C757D;
  
  /* Glassmorphism colors */
  --glass-bg: rgba(255, 255, 255, 0.15);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-shadow: rgba(0, 0, 0, 0.1);
  --glass-bg-scroll: rgba(255, 255, 255, 0.08);
  --glass-border-scroll: rgba(255, 255, 255, 0.1);
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--accent-purple), var(--accent-pink));
  --gradient-secondary: linear-gradient(135deg, var(--accent-pink), var(--accent-rose));
  --gradient-hero: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  
  /* Service card gradients */
  --gradient-card-1: linear-gradient(135deg, rgba(161, 60, 175, 0.08), rgba(204, 97, 166, 0.05));
  --gradient-card-2: linear-gradient(135deg, rgba(204, 97, 166, 0.08), rgba(221, 146, 159, 0.05));
  --gradient-card-3: linear-gradient(135deg, rgba(221, 146, 159, 0.08), rgba(238, 208, 196, 0.05));
  --gradient-card-hover: linear-gradient(135deg, rgba(161, 60, 175, 0.15), rgba(204, 97, 166, 0.1));
  
  /* Typography */
  --font-family: 'Inter', 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;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-base: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;
  
  /* Container Widths */
  --container-sm: 540px;
  --container-md: 720px;
  --container-lg: 960px;
  --container-xl: 1140px;
  --container-2xl: 1320px;
  
  /* Touch Targets */
  --touch-target: 44px;
  --touch-target-lg: 48px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-base: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 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);
  --shadow-glass: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
  --shadow-neutral: 0 4px 12px 0 rgba(108, 117, 125, 0.15), 0 2px 4px 0 rgba(108, 117, 125, 0.1);
  --shadow-neutral-lg: 0 8px 24px 0 rgba(108, 117, 125, 0.2), 0 4px 8px 0 rgba(108, 117, 125, 0.15);
  --shadow-card: 0 8px 25px -5px rgba(161, 60, 175, 0.15), 0 4px 10px -2px rgba(161, 60, 175, 0.1);
  --shadow-card-hover: 0 20px 40px -10px rgba(161, 60, 175, 0.25), 0 8px 20px -5px rgba(161, 60, 175, 0.15);
  
  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-base: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
  --transition-bounce: 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-base: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-3xl: 1.5rem;
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-popover: 1050;
  --z-tooltip: 1060;
}

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

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

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

/* ===== CONTAINER SYSTEM ===== */
.container {
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--spacing-base);
  max-width: var(--container-2xl);
}

@media (min-width: 576px) {
  .container {
    max-width: var(--container-sm);
    padding: 0 1.5rem;
  }
}

@media (min-width: 768px) {
  .container {
    max-width: var(--container-md);
    padding: 0 2rem;
  }
}

@media (min-width: 1024px) {
  .container {
    max-width: var(--container-lg);
    padding: 0 2.5rem;
  }
}

@media (min-width: 1440px) {
  .container {
    max-width: var(--container-xl);
    padding: 0 3rem;
  }
}

@media (min-width: 1920px) {
  .container {
    max-width: var(--container-2xl);
    padding: 0 4rem;
  }
}

/* ===== SECTION STYLES ===== */
.section {
  padding: var(--spacing-4xl) 0;
}

@media (max-width: 767px) {
  .section {
    padding: var(--spacing-3xl) 0;
  }
}

.section__header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section__title {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--spacing-base);
  position: relative;
  line-height: 1.2;
}

@media (max-width: 767px) {
  .section__title {
    font-size: var(--font-size-3xl);
  }
}

.section__title::after {
  content: '';
  position: absolute;
  bottom: -0.625rem;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

@media (max-width: 767px) {
  .section__title::after {
    width: 40px;
  }
}

.section__description {
  font-size: var(--font-size-lg);
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ===== BUTTON STYLES ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-xl);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-lg);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  min-height: var(--touch-target);
  min-width: var(--touch-target);
  text-align: center;
  white-space: nowrap;
}

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

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.btn--secondary {
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 4px 15px 0 rgba(255, 255, 255, 0.1);
}

.btn--secondary:hover {
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px 0 rgba(255, 255, 255, 0.2);
}

.btn--full {
  width: 100%;
}

.btn--small {
  padding: var(--spacing-xs) var(--spacing-base);
  font-size: var(--font-size-sm);
  min-height: calc(var(--touch-target) * 0.8);
}

@media (max-width: 767px) {
  .btn {
    padding: var(--spacing-base) var(--spacing-lg);
    font-size: var(--font-size-base);
    min-height: var(--touch-target-lg);
  }
  
  .btn--small {
    min-height: var(--touch-target);
  }
}

/* ===== LOADING STATES ===== */
.btn.loading {
  position: relative;
  color: transparent;
}

.btn.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 20px;
  height: 20px;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: translate(-50%, -50%) rotate(0deg); }
  100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

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

.nav__link:focus,
.btn:focus,
.form__input:focus,
.footer__link:focus,
.legal-nav__link:focus {
  outline: 2px solid var(--accent-purple);
  outline-offset: 2px;
}

@media (prefers-contrast: high) {
  :root {
    --text-primary: #000000;
    --text-secondary: #000000;
    --text-light: #333333;
  }
}

/* ===== PRINT STYLES ===== */
@media print {
  .header,
  .back-to-top,
  .hero__floating-card,
  .legal-nav {
    display: none;
  }
  
  .section {
    page-break-inside: avoid;
  }
  
  body {
    background: white;
    color: black;
  }
  
  .legal-content__wrapper {
    grid-template-columns: 1fr;
  }
  
  .container {
    max-width: 100%;
    padding: 0;
  }
}

/* ===== PERFORMANCE OPTIMIZATIONS ===== */
.hero__floating-card,
.service__card,
.portfolio__item,
.testimonial__card,
.blog__card,
.btn {
  will-change: transform;
}

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

img[loading="lazy"] {
  opacity: 0;
  transition: opacity 0.3s;
}

img[loading="lazy"].loaded {
  opacity: 1;
}

@font-face {
  font-family: 'Inter';
  font-display: swap;
}