/* ===== CSS VARIABLES ===== */
:root {
  /* Color Palette */
  --color-primary: #111111;
  --color-secondary: #737373;
  --color-background: #FFFFFF;
  --color-footer: #0a0a0a;
  --color-button: #111111;
  --color-section-light: #F5F5F5;
  
  /* Typography */
  --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', 'Roboto', sans-serif;
  --font-heading: var(--font-primary);
  --font-body: var(--font-primary);
  
  /* Spacing Scale */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  
  /* Layout */
  --container-max-width: 1200px;
  --section-padding: var(--space-4xl) var(--space-md);
  --border-radius: 0px;
  --border-width: 1px;
  
  /* Shadows */
  --shadow-subtle: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.2s ease;
  --transition-slow: 0.3s ease;
}

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

html {
  font-size: 16px;
  line-height: 1.6;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-primary);
  background-color: var(--color-background);
  line-height: 1.7;
  -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: 1.3;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-lg);
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: var(--space-md);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: var(--space-sm);
}

h4 {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

h5 {
  font-size: 1.25rem;
  font-weight: 500;
}

h6 {
  font-size: 1rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-secondary);
}

p {
  margin-bottom: var(--space-md);
  color: var(--color-primary);
  font-weight: 400;
}

p.lead {
  font-size: 1.25rem;
  color: var(--color-secondary);
  font-weight: 400;
  line-height: 1.6;
}

/* Links */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
  position: relative;
}

a:hover {
  color: var(--color-secondary);
}

a:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Lists */
ul, ol {
  margin-bottom: var(--space-md);
  padding-left: var(--space-lg);
}

li {
  margin-bottom: var(--space-xs);
  color: var(--color-primary);
}

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

.section {
  padding: var(--section-padding);
  position: relative;
}

.section:nth-child(even) {
  background-color: var(--color-section-light);
}

.section--dark {
  background-color: var(--color-footer);
  color: #ffffff;
}

.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4,
.section--dark h5,
.section--dark h6 {
  color: #ffffff;
}

.section--dark p {
  color: rgba(255, 255, 255, 0.9);
}

/* ===== HEADER ===== */
.header {
  background-color: var(--color-background);
  border-bottom: var(--border-width) solid rgba(17, 17, 17, 0.1);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

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

.header__logo {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-primary);
}

.header__nav {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
  padding: 0;
  margin: 0;
}

.header__nav a {
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
  padding: var(--space-xs) 0;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
}

.header__nav a:hover {
  border-bottom-color: var(--color-primary);
  transform: translateY(-1px);
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-lg);
  font-family: var(--font-primary);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  border: var(--border-width) solid var(--color-button);
  background-color: var(--color-button);
  color: #ffffff;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
  min-height: 44px;
  letter-spacing: -0.01em;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left 0.5s;
}

.btn:hover {
  background-color: #333333;
  transform: translateY(-1px);
  box-shadow: var(--shadow-card);
}

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

.btn:active {
  transform: translateY(0);
}

.btn:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

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

.btn--secondary:hover {
  background-color: var(--color-primary);
  color: #ffffff;
}

.btn--large {
  padding: var(--space-md) var(--space-xl);
  font-size: 1.1rem;
  min-height: 52px;
}

.btn--small {
  padding: var(--space-xs) var(--space-md);
  font-size: 0.875rem;
  min-height: 36px;
}

/* ===== CARDS ===== */
.card {
  background-color: var(--color-background);
  border: var(--border-width) solid rgba(17, 17, 17, 0.1);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background-color: var(--color-primary);
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
  border-color: rgba(17, 17, 17, 0.2);
}

.card:hover::before {
  transform: scaleX(1);
}

.card__header {
  padding: var(--space-lg);
  border-bottom: var(--border-width) solid rgba(17, 17, 17, 0.08);
}

.card__body {
  padding: var(--space-lg);
}

.card__footer {
  padding: var(--space-md) var(--space-lg);
  background-color: rgba(17, 17, 17, 0.02);
  border-top: var(--border-width) solid rgba(17, 17, 17, 0.08);
}

.card--horizontal {
  display: flex;
  align-items: stretch;
}

.card--horizontal .card__header,
.card--horizontal .card__body {
  flex: 1;
}

/* ===== FORMS ===== */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--space-xs);
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-primary);
  letter-spacing: -0.01em;
}

.form-input {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-primary);
  font-size: 1rem;
  color: var(--color-primary);
  background-color: var(--color-background);
  border: var(--border-width) solid rgba(17, 17, 17, 0.2);
  transition: all var(--transition-fast);
  min-height: 44px;
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(17, 17, 17, 0.1);
}

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

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3E%3Cpath stroke='%23737373' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3E%3C/svg%3E");
  background-position: right var(--space-sm) center;
  background-repeat: no-repeat;
  background-size: 16px;
  padding-right: var(--space-xl);
}

/* ===== GRID SYSTEM ===== */
.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid--2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid--4 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

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

/* ===== UTILITIES ===== */
.text-center {
  text-align: center;
}

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

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

.text-secondary {
  color: var(--color-secondary);
}

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

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }

.p-0 { padding: 0; }
.p-sm { padding: var(--space-sm); }
.p-md { padding: var(--space-md); }
.p-lg { padding: var(--space-lg); }
.p-xl { padding: var(--space-xl); }

.pt-0 { padding-top: 0; }
.pt-sm { padding-top: var(--space-sm); }
.pt-md { padding-top: var(--space-md); }
.pt-lg { padding-top: var(--space-lg); }
.pt-xl { padding-top: var(--space-xl); }
.pt-2xl { padding-top: var(--space-2xl); }

.pb-0 { padding-bottom: 0; }
.pb-sm { padding-bottom: var(--space-sm); }
.pb-md { padding-bottom: var(--space-md); }
.pb-lg { padding-bottom: var(--space-lg); }
.pb-xl { padding-bottom: var(--space-xl); }
.pb-2xl { padding-bottom: var(--space-2xl); }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

/* ===== HERO SECTION ===== */
.hero {
  padding: var(--space-4xl) 0;
  text-align: center;
  position: relative;
}

.hero__title {
  max-width: 800px;
  margin: 0 auto var(--space-lg);
}

.hero__subtitle {
  max-width: 600px;
  margin: 0 auto var(--space-xl);
  color: var(--color-secondary);
}

.hero__actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--space-xl);
}

/* ===== FOOTER ===== */
.footer {
  background-color: var(--color-footer);
  color: #ffffff;
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer__content {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.footer__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer__section h5 {
  color: #ffffff;
  margin-bottom: var(--space-lg);
}

.footer__links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer__links a {
  color: rgba(255, 255, 255, 0.8);
  display: block;
  padding: var(--space-xs) 0;
  transition: color var(--transition-fast);
}

.footer__links a:hover {
  color: #ffffff;
  transform: translateX(4px);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-lg);
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
}

/* ===== FEATURE SECTION ===== */
.features {
  padding: var(--space-4xl) 0;
}

.features__header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-3xl);
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-2xl);
}

.feature {
  text-align: center;
  padding: var(--space-lg);
}

.feature__icon {
  width: 64px;
  height: 64px;
  background-color: var(--color-primary);
  color: #ffffff;
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-lg);
  font-size: 1.5rem;
  transition: all var(--transition-normal);
}

.feature:hover .feature__icon {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

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

.feature__description {
  color: var(--color-secondary);
  line-height: 1.6;
}

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

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

.animate-fade-in {
  animation: fadeIn 0.4s ease-out;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
  :root {
    --section-padding: var(--space-2xl) var(--space-md);
  }
  
  .header__nav {
    display: none;
  }
  
  .hero {
    padding: var(--space-3xl) 0;
  }
  
  .hero__actions {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    max-width: 300px;
  }
  
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }
  
  .features__grid {
    grid-template-columns: 1fr;
  }
  
  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
}

@media (max-width: 480px) {
  :root {
    --section-padding: var(--space-xl) var(--space-sm);
  }
  
  .container {
    padding: 0 var(--space-sm);
  }
  
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  .card__body,
  .card__header {
    padding: var(--space-md);
  }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  html {
    scroll-behavior: auto;
  }
}

/* Focus indicators for keyboard navigation */
*:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .card {
    border-width: 2px;
  }
  
  .btn {
    border-width: 2px;
  }
}

/* ===== CUSTOM COMPONENTS ===== */
.divider {
  height: var(--border-width);
  background-color: rgba(17, 17, 17, 0.1);
  margin: var(--space-2xl) 0;
  border: none;
}

.section-divider {
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(17, 17, 17, 0.2), transparent);
  margin: var(--space-3xl) 0;
  border: none;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-sm);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background-color: rgba(17, 17, 17, 0.1);
  color: var(--color-primary);
  border-radius: var(--border-radius);
}

.badge--secondary {
  background-color: var(--color-secondary);
  color: #ffffff;
}

/* Container with max-width but full-width on mobile */
.container-fluid {
  width: 100%;
  padding: 0 var(--space-md);
}

@media (min-width: 768px) {
  .container-fluid {
    max-width: var(--container-max-width);
    margin: 0 auto;
  }
}

/* Section with different background patterns */
.section--pattern {
  position: relative;
}

.section--pattern::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(45deg, transparent 40%, rgba(17, 17, 17, 0.02) 50%, transparent 60%),
    linear-gradient(-45deg, transparent 40%, rgba(17, 17, 17, 0.02) 50%, transparent 60%);
  background-size: 20px 20px;
  pointer-events: none;
}

.section--pattern > * {
  position: relative;
  z-index: 1;
}


/* Cookie Banner Additional Styles for Tailwind */
.cookie-banner-hover-effect:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

@media (prefers-reduced-motion: reduce) {
    .cookie-banner-hover-effect:hover {
        transform: none;
    }
}