/* ============================================ */
/* BASE STYLES - Variables, Reset, Typography  */
/* ============================================ */

/* CSS Variables */
:root {
  --white: #FFFFFF;
  --black: #111111;
  --green: #2BB673;
  --green-hover: #23965D;
  --gray-bg: #F7F7F7;
  --gray-text: #6B7280;
  --max-width: 1100px;
  --text-width: 600px;
  --spacing-8: 8px;
  --spacing-16: 16px;
  --spacing-24: 24px;
  --spacing-32: 32px;
  --spacing-48: 48px;
  --spacing-64: 64px;
  --radius-card: 16px;
  --radius-btn: 12px;
  --radius-input: 12px;
  --shadow-soft: 0 10px 40px rgba(0, 0, 0, 0.06);
  --transition-fast: 160ms ease;
}

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--black);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

html {
  scroll-behavior: smooth;
}

/* Navigation */
nav {
  padding: var(--spacing-24) 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #E5E7EB;
  background: var(--white);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: all 0.3s ease;
}

nav.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.logo {
  font-size: 20px;
  font-weight: 800;
  color: var(--black);
  letter-spacing: -0.5px;
}

.logo-o {
  color: var(--green);
}

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-link {
  text-decoration: none;
  color: var(--gray-text);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-link:hover {
  color: var(--black);
}

.nav-btn {
  background: var(--green);
  color: var(--white);
  padding: 10px 20px;
  border-radius: var(--radius-btn);
  font-weight: 600;
  transition: all var(--transition-fast);
}

.nav-btn:hover {
  background: var(--green-hover);
  transform: translateY(-1px);
}

/* Language Selector */
.lang-selector {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: 16px;
}

.lang-option {
  font-size: 13px;
  font-weight: 600;
  color: var(--black);
  cursor: pointer;
  transition: color 0.2s;
  user-select: none;
}

.lang-option:hover {
  opacity: 0.7;
}

.lang-option.active {
  color: var(--green);
}

.lang-divider {
  color: #E5E7EB;
  font-size: 13px;
  font-weight: 300;
}

/* Buttons */
.btn {
  padding: var(--spacing-16) var(--spacing-32);
  font-size: 16px;
  font-weight: 600;
  border-radius: var(--radius-btn);
  text-decoration: none;
  display: inline-block;
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
  font-family: inherit;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

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

.btn-primary:hover:not(:disabled) {
  background: var(--green-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(43, 182, 115, 0.3);
}

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

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

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

.btn-white:hover {
  background: #F3F4F6;
  transform: translateY(-2px);
}

/* Footer */
footer {
  padding: var(--spacing-64) 40px var(--spacing-32);
  border-top: 1px solid #E5E7EB;
  background: var(--gray-bg);
}

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

.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-32);
  margin-bottom: var(--spacing-24);
  flex-wrap: wrap;
}

.footer-link {
  color: var(--gray-text);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color var(--transition-fast);
}

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

.footer-legal {
  text-align: center;
  color: var(--gray-text);
  font-size: 13px;
  line-height: 1.6;
  margin-bottom: var(--spacing-16);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.footer-copy {
  text-align: center;
  color: var(--gray-text);
  font-size: 13px;
  margin-top: var(--spacing-24);
}

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--white);
  border-top: 2px solid var(--green);
  padding: var(--spacing-24);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
  z-index: 200;
  display: none;
  animation: slideUp 0.3s ease-out;
}

.cookie-banner.show {
  display: block;
}

@keyframes slideUp {
  from {
    transform: translateY(100%);
  }
  to {
    transform: translateY(0);
  }
}

.cookie-content {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-24);
  flex-wrap: wrap;
}

.cookie-text {
  flex: 1;
  font-size: 14px;
  color: var(--black);
  line-height: 1.5;
}

.cookie-accept {
  background: var(--green);
  color: var(--white);
  padding: 12px 24px;
  border-radius: var(--radius-btn);
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: inherit;
  font-size: 14px;
}

.cookie-accept:hover {
  background: var(--green-hover);
}

/* Animations */
.section-fade-in {
  animation: fadeInUp 0.5s ease-out;
}

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Scroll Reveal Animation */
.scroll-reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 220ms ease-out, transform 220ms ease-out;
}

.scroll-reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}