/* =====================
   CalliNeuro Tech Futuristic CSS
   ===================== */

/* 1. Root Variables & Base Styles */
:root {
  --color-primary: #274690;
  --color-secondary: #E8A735;
  --color-accent: #F3F6FB;
  --color-bg-dark: #181C2F;
  --color-bg-gradient: linear-gradient(135deg, #23243a 0%, #274690 100%);
  --color-neon-blue: #3ECFFF;
  --color-neon-purple: #A259F7;
  --color-neon-yellow: #FFE156;
  --color-text-main: #F3F6FB;
  --color-text-dark: #181C2F;
  --color-text-light: #F3F6FB;
  --color-shadow: 0 4px 32px 0 rgba(46, 89, 148, 0.18);
  --font-display: 'Montserrat', 'Segoe UI', Arial, sans-serif;
  --font-body: 'Roboto', 'Segoe UI', Arial, sans-serif;
  --transition: 0.25s cubic-bezier(.4,0,.2,1);
  --radius: 18px;
  --radius-sm: 10px;
  --gap-main: 24px;
  --gap-card: 20px;
  --gap-feature: 15px;
  --header-height: 72px;
}

html {
  box-sizing: border-box;
  font-size: 16px;
  scroll-behavior: smooth;
}
*, *:before, *:after {
  box-sizing: inherit;
}

body {
  min-height: 100vh;
  background: var(--color-bg-gradient);
  color: var(--color-text-main);
  font-family: var(--font-body);
  margin: 0;
  padding: 0;
  line-height: 1.7;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  background-attachment: fixed;
}

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.content-wrapper {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 24px;
}

/* 2. Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--color-neon-blue);
  margin: 0 0 12px 0;
  letter-spacing: 0.01em;
}
h1 {
  font-size: 2.5rem;
  background: linear-gradient(90deg, var(--color-neon-blue), var(--color-neon-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-fill-color: transparent;
  margin-bottom: 16px;
}
h2 {
  font-size: 2rem;
  color: var(--color-neon-purple);
  margin-bottom: 12px;
}
h3 {
  font-size: 1.25rem;
  color: var(--color-neon-yellow);
}
h4, h5, h6 {
  color: var(--color-secondary);
}
p, li, span, a, label {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text-main);
  margin: 0 0 10px 0;
}
strong {
  color: var(--color-neon-yellow);
  font-weight: 700;
}
a {
  color: var(--color-neon-blue);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover, a:focus {
  color: var(--color-secondary);
  text-shadow: 0 0 6px var(--color-neon-blue);
}

/* 3. Header & Navigation */
header {
  width: 100%;
  background: rgba(24,28,47,0.98);
  box-shadow: 0 2px 16px 0 rgba(39,70,144,0.08);
  position: sticky;
  top: 0;
  z-index: 100;
}
header .container {
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
  gap: 0;
}
header img {
  height: 48px;
  margin-right: 24px;
}
header nav {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 28px;
}
header nav a {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1rem;
  color: var(--color-text-main);
  padding: 6px 0;
  position: relative;
  transition: color var(--transition);
}
header nav a:after {
  content: '';
  display: block;
  height: 2px;
  width: 0;
  background: linear-gradient(90deg, var(--color-neon-blue), var(--color-neon-purple));
  transition: width var(--transition);
  border-radius: 2px;
  margin-top: 2px;
}
header nav a:hover:after, header nav a:focus:after {
  width: 100%;
}
header nav a:hover, header nav a:focus {
  color: var(--color-neon-blue);
}

.cta-button {
  background: linear-gradient(90deg, var(--color-neon-blue) 0%, var(--color-neon-purple) 100%);
  color: var(--color-text-dark);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  padding: 12px 32px;
  border: none;
  border-radius: var(--radius);
  box-shadow: 0 2px 16px 0 rgba(62,207,255,0.18);
  cursor: pointer;
  margin-left: 32px;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition);
  position: relative;
  z-index: 1;
  text-shadow: 0 0 8px #fff8;
}
.cta-button:hover, .cta-button:focus {
  background: linear-gradient(90deg, var(--color-neon-purple) 0%, var(--color-neon-blue) 100%);
  color: var(--color-neon-yellow);
  box-shadow: 0 4px 32px 0 var(--color-neon-blue);
  transform: translateY(-2px) scale(1.03);
}

/* 4. Mobile Navigation */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-neon-blue);
  font-size: 2rem;
  cursor: pointer;
  margin-left: 16px;
  z-index: 120;
  transition: color var(--transition), transform var(--transition);
}
.mobile-menu-toggle:active {
  color: var(--color-neon-yellow);
  transform: scale(1.1);
}
.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(24,28,47,0.98);
  box-shadow: 0 8px 32px 0 rgba(39,70,144,0.18);
  z-index: 200;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-start;
  padding: 32px 24px 24px 24px;
  transform: translateX(-100%);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.35s cubic-bezier(.4,0,.2,1), opacity 0.25s;
}
.mobile-menu.open {
  transform: translateX(0);
  opacity: 1;
  pointer-events: auto;
}
.mobile-menu-close {
  background: none;
  border: none;
  color: var(--color-neon-blue);
  font-size: 2rem;
  align-self: flex-end;
  margin-bottom: 24px;
  cursor: pointer;
  transition: color var(--transition), transform var(--transition);
}
.mobile-menu-close:active {
  color: var(--color-neon-yellow);
  transform: scale(1.1);
}
.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 22px;
  width: 100%;
}
.mobile-nav a {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--color-neon-blue);
  padding: 10px 0;
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
}
.mobile-nav a:hover, .mobile-nav a:focus {
  background: rgba(62,207,255,0.08);
  color: var(--color-neon-yellow);
}

@media (max-width: 1024px) {
  header .container nav {
    display: none;
  }
  .cta-button {
    margin-left: 0;
  }
  .mobile-menu-toggle {
    display: block;
  }
}
@media (min-width: 1025px) {
  .mobile-menu, .mobile-menu-toggle {
    display: none !important;
  }
}

/* 5. Section, Card, and Layout Patterns */
section {
  margin-bottom: 60px;
  padding: 40px 20px;
  background: none;
  border-radius: var(--radius);
  position: relative;
}

.card-container {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}
.card {
  background: rgba(39,70,144,0.12);
  border-radius: var(--radius);
  box-shadow: var(--color-shadow);
  margin-bottom: 20px;
  position: relative;
  padding: 28px 24px;
  transition: box-shadow var(--transition), transform var(--transition);
}
.card:hover, .card:focus-within {
  box-shadow: 0 8px 32px 0 var(--color-neon-blue);
  transform: translateY(-4px) scale(1.02);
}

.content-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: space-between;
}
.text-image-section {
  display: flex;
  align-items: center;
  gap: 30px;
  flex-wrap: wrap;
}
.testimonial-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 20px;
  padding: 20px;
  background: var(--color-accent);
  color: var(--color-text-dark);
  border-radius: var(--radius);
  box-shadow: 0 2px 16px 0 rgba(39,70,144,0.10);
  margin-bottom: 20px;
  position: relative;
  transition: box-shadow var(--transition), transform var(--transition);
}
.testimonial-card:hover, .testimonial-card:focus-within {
  box-shadow: 0 8px 32px 0 var(--color-neon-blue);
  transform: translateY(-2px) scale(1.01);
}
.testimonial-card p {
  color: var(--color-text-dark);
  font-size: 1.1rem;
  margin-bottom: 8px;
}
.testimonial-card span {
  color: var(--color-primary);
  font-weight: 500;
  font-size: 1rem;
}

.feature-item, .feature {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 15px;
  background: rgba(39,70,144,0.10);
  border-radius: var(--radius-sm);
  padding: 22px 18px;
  box-shadow: 0 2px 12px 0 rgba(62,207,255,0.08);
  margin-bottom: 20px;
  transition: box-shadow var(--transition), transform var(--transition);
}
.feature:hover, .feature:focus-within, .feature-item:hover, .feature-item:focus-within {
  box-shadow: 0 4px 24px 0 var(--color-neon-purple);
  transform: translateY(-2px) scale(1.01);
}

/* Feature grid for 2-4 columns using flexbox */
.feature-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: flex-start;
}
.feature-grid .feature {
  flex: 1 1 220px;
  min-width: 220px;
  max-width: 320px;
}

/* Course Cards */
.course-cards, .course-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 24px;
}
.course-card {
  background: rgba(39,70,144,0.13);
  border-radius: var(--radius-sm);
  box-shadow: 0 2px 12px 0 rgba(62,207,255,0.08);
  padding: 22px 18px;
  flex: 1 1 260px;
  min-width: 220px;
  max-width: 340px;
  margin-bottom: 20px;
  transition: box-shadow var(--transition), transform var(--transition);
  position: relative;
}
.course-card:hover, .course-card:focus-within {
  box-shadow: 0 4px 24px 0 var(--color-neon-blue);
  transform: translateY(-2px) scale(1.01);
}
.course-card h3 {
  margin-bottom: 8px;
}

/* FAQ List */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.faq-item {
  background: rgba(39,70,144,0.10);
  border-radius: var(--radius-sm);
  padding: 18px 16px;
  box-shadow: 0 2px 12px 0 rgba(62,207,255,0.06);
  margin-bottom: 20px;
}
.faq-item h3 {
  color: var(--color-neon-blue);
  font-size: 1.1rem;
  margin-bottom: 6px;
}
.faq-item p {
  color: var(--color-text-main);
}

/* Contact Details */
.contact-details {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}
.map-placeholder {
  background: rgba(39,70,144,0.10);
  border-radius: var(--radius-sm);
  padding: 18px 16px;
  color: var(--color-neon-blue);
  font-style: italic;
  margin-bottom: 20px;
}

/* Footer */
footer {
  background: #181C2F;
  padding: 40px 0 24px 0;
  border-top: 2px solid var(--color-neon-blue);
  box-shadow: 0 -2px 16px 0 rgba(39,70,144,0.08);
}
footer .container {
  flex-direction: column;
  align-items: flex-start;
  gap: 18px;
}
footer nav {
  display: flex;
  flex-direction: row;
  gap: 24px;
  margin-bottom: 10px;
}
footer nav a {
  color: var(--color-neon-blue);
  font-family: var(--font-display);
  font-size: 1rem;
  transition: color var(--transition);
}
footer nav a:hover, footer nav a:focus {
  color: var(--color-neon-yellow);
}
.footer-contact {
  color: var(--color-accent);
  font-size: 0.98rem;
  margin-bottom: 8px;
}
.footer-contact a {
  color: var(--color-neon-blue);
  text-decoration: underline;
}
.footer-brand {
  color: var(--color-neon-purple);
  font-size: 0.95rem;
  margin-top: 8px;
}

/* 6. Cookie Consent Banner & Modal */
.cookie-banner {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 300;
  background: linear-gradient(90deg, #23243a 0%, #274690 100%);
  color: var(--color-text-main);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  box-shadow: 0 -4px 32px 0 rgba(39,70,144,0.18);
  border-radius: var(--radius) var(--radius) 0 0;
  opacity: 0;
  pointer-events: none;
  transform: translateY(100%);
  transition: opacity 0.3s, transform 0.4s cubic-bezier(.4,0,.2,1);
}
.cookie-banner.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.cookie-banner p {
  color: var(--color-text-main);
  margin-bottom: 0;
  text-align: center;
}
.cookie-banner .cookie-actions {
  display: flex;
  flex-direction: row;
  gap: 18px;
}
.cookie-btn {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  border: none;
  border-radius: var(--radius-sm);
  padding: 10px 22px;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
  margin: 0;
}
.cookie-btn.accept {
  background: linear-gradient(90deg, var(--color-neon-blue), var(--color-neon-purple));
  color: var(--color-text-dark);
  box-shadow: 0 2px 12px 0 rgba(62,207,255,0.12);
}
.cookie-btn.accept:hover, .cookie-btn.accept:focus {
  background: linear-gradient(90deg, var(--color-neon-purple), var(--color-neon-blue));
  color: var(--color-neon-yellow);
}
.cookie-btn.reject {
  background: rgba(39,70,144,0.18);
  color: var(--color-neon-yellow);
}
.cookie-btn.reject:hover, .cookie-btn.reject:focus {
  background: rgba(232,167,53,0.18);
  color: var(--color-neon-blue);
}
.cookie-btn.settings {
  background: none;
  color: var(--color-neon-blue);
  border: 1.5px solid var(--color-neon-blue);
}
.cookie-btn.settings:hover, .cookie-btn.settings:focus {
  background: rgba(62,207,255,0.08);
  color: var(--color-neon-yellow);
}

/* Cookie Modal */
.cookie-modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(24,28,47,0.92);
  z-index: 400;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.cookie-modal-overlay.visible {
  opacity: 1;
  pointer-events: auto;
}
.cookie-modal {
  background: linear-gradient(135deg, #23243a 0%, #274690 100%);
  color: var(--color-text-main);
  border-radius: var(--radius);
  box-shadow: 0 8px 32px 0 rgba(39,70,144,0.18);
  padding: 36px 28px 28px 28px;
  min-width: 320px;
  max-width: 95vw;
  display: flex;
  flex-direction: column;
  gap: 22px;
  position: relative;
  animation: cookieModalIn 0.4s cubic-bezier(.4,0,.2,1);
}
@keyframes cookieModalIn {
  from { transform: translateY(40px) scale(0.98); opacity: 0; }
  to { transform: translateY(0) scale(1); opacity: 1; }
}
.cookie-modal h2 {
  color: var(--color-neon-blue);
  margin-bottom: 8px;
}
.cookie-modal .cookie-category {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 10px;
}
.cookie-modal .cookie-category label {
  font-size: 1rem;
  color: var(--color-text-main);
}
.cookie-modal .cookie-toggle {
  width: 44px;
  height: 24px;
  border-radius: 12px;
  background: rgba(62,207,255,0.18);
  position: relative;
  cursor: pointer;
  transition: background var(--transition);
  margin-left: 8px;
}
.cookie-modal .cookie-toggle input {
  display: none;
}
.cookie-modal .cookie-toggle .slider {
  position: absolute;
  top: 2px; left: 2px;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--color-neon-blue);
  transition: left var(--transition), background var(--transition);
}
.cookie-modal .cookie-toggle input:checked + .slider {
  left: 22px;
  background: var(--color-neon-yellow);
}
.cookie-modal .cookie-category.essential label {
  color: var(--color-neon-yellow);
  font-weight: 600;
}
.cookie-modal .cookie-category.essential .cookie-toggle {
  opacity: 0.5;
  pointer-events: none;
}
.cookie-modal .cookie-modal-actions {
  display: flex;
  flex-direction: row;
  gap: 18px;
  margin-top: 10px;
}
.cookie-modal .cookie-modal-close {
  position: absolute;
  top: 16px; right: 18px;
  background: none;
  border: none;
  color: var(--color-neon-blue);
  font-size: 1.5rem;
  cursor: pointer;
  transition: color var(--transition), transform var(--transition);
}
.cookie-modal .cookie-modal-close:active {
  color: var(--color-neon-yellow);
  transform: scale(1.1);
}

/* 7. Animations & Micro-interactions */
.card, .feature, .course-card, .testimonial-card, .faq-item {
  transition: box-shadow var(--transition), transform var(--transition);
}
.cta-button, .cookie-btn {
  transition: background var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition);
}

/* 8. Responsive Design */
@media (max-width: 1024px) {
  .container {
    max-width: 98vw;
    padding: 0 10px;
  }
  .feature-grid, .course-cards, .course-grid, .card-container, .content-grid {
    gap: 18px;
  }
  .feature-grid .feature, .course-card {
    min-width: 180px;
    max-width: 100%;
    flex: 1 1 180px;
  }
}
@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }
  h2 {
    font-size: 1.3rem;
  }
  section {
    padding: 28px 6px;
    margin-bottom: 36px;
  }
  .feature-grid, .course-cards, .course-grid, .card-container, .content-grid {
    flex-direction: column;
    gap: 16px;
  }
  .feature-grid .feature, .course-card {
    min-width: 0;
    max-width: 100%;
    width: 100%;
  }
  .text-image-section {
    flex-direction: column;
    gap: 18px;
    align-items: flex-start;
  }
  .testimonial-card, .feature, .faq-item, .card {
    padding: 16px 10px;
  }
  .cookie-modal {
    min-width: 0;
    padding: 24px 10px 18px 10px;
  }
}
@media (max-width: 480px) {
  .container {
    padding: 0 4px;
  }
  .cta-button, .cookie-btn {
    padding: 10px 12px;
    font-size: 0.98rem;
  }
  .cookie-banner {
    padding: 16px 6px;
  }
}

/* 9. Utility Classes */
.hide {
  display: none !important;
}
.visible {
  display: block !important;
}

/* 10. Miscellaneous */
::-webkit-scrollbar {
  width: 8px;
  background: #23243a;
}
::-webkit-scrollbar-thumb {
  background: var(--color-neon-blue);
  border-radius: 8px;
}

/* 11. Accessibility */
:focus {
  outline: 2px solid var(--color-neon-yellow);
  outline-offset: 2px;
}

/* 12. Neon Glow Effects (for Futuristic Accents) */
.neon-glow {
  text-shadow: 0 0 8px var(--color-neon-blue), 0 0 16px var(--color-neon-purple);
}

/* 13. Testimonial Slider (if used) */
.testimonial-slider {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 20px;
}

/* 14. Section Spacing (MANDATORY) */
.section {
  margin-bottom: 60px;
  padding: 40px 20px;
}
.card-container {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}
.card {
  margin-bottom: 20px;
  position: relative;
}
.content-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: space-between;
}
.text-image-section {
  display: flex;
  align-items: center;
  gap: 30px;
  flex-wrap: wrap;
}
.testimonial-card {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px;
}
.feature-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 15px;
}

/* 15. Prevent Overlapping */
.card, .feature, .course-card, .testimonial-card, .faq-item {
  margin-bottom: 20px;
}

/* 16. Z-index for overlays */
.mobile-menu { z-index: 200; }
.cookie-banner { z-index: 300; }
.cookie-modal-overlay { z-index: 400; }

/* 17. Prevent absolute positioning for content cards (only for decorative elements) */
/* No absolute positioning used for .card, .feature, .testimonial-card, etc. */

/* END OF CSS */