/* Brisk Explorer School - Industrial Modern CSS Theme */

/* 1. Root Variables for Brand and Industrial Modern Palette */
:root {
  --color-primary: #1A2963;
  --color-secondary: #F4B942;
  --color-accent: #F6F9FB;
  --color-bg-dark: #181B23;
  --color-bg-medium: #232733;
  --color-bg-light: #232733;
  --color-metal: #A7A9AC;
  --color-steel: #3C4251;
  --color-text-main: #F6F9FB;
  --color-text-dark: #232733;
  --color-text-light: #F6F9FB;
  --color-shadow: rgba(26,41,99,0.12);
  --color-shadow-strong: rgba(26,41,99,0.25);
  --color-border: #31374A;
  --color-success: #4CAF50;
  --color-danger: #E53935;
  --color-info: #2196F3;
  --font-display: 'Montserrat', 'Arial Narrow', Arial, sans-serif;
  --font-body: 'Open Sans', 'Segoe UI', Arial, sans-serif;
  --transition-main: 0.25s cubic-bezier(.4,0,.2,1);
  --radius-card: 12px;
  --radius-btn: 6px;
  --z-cookie: 10000;
  --z-mobile-menu: 9999;
}

/* 2. Base Reset & Typography */
html {
  box-sizing: border-box;
  font-size: 16px;
  background: var(--color-bg-dark);
  color: var(--color-text-main);
  scroll-behavior: smooth;
}
*, *:before, *:after {
  box-sizing: inherit;
}
body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--color-bg-dark);
  color: var(--color-text-main);
  min-height: 100vh;
  line-height: 1.6;
  letter-spacing: 0.01em;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--color-secondary);
  margin-top: 0;
  margin-bottom: 0.5em;
  font-weight: 700;
  letter-spacing: 0.01em;
}
h1 {
  font-size: 2.2rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
h2 {
  font-size: 1.6rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
h3 {
  font-size: 1.2rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
p, ul, ol {
  color: var(--color-text-main);
  font-size: 1rem;
  margin-bottom: 1em;
}
strong {
  color: var(--color-secondary);
  font-weight: 700;
}
a {
  color: var(--color-secondary);
  text-decoration: none;
  transition: color var(--transition-main);
}
a:hover, a:focus {
  color: var(--color-metal);
}

/* 3. Layout Containers */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  flex-direction: column;
}
.content-wrapper {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* 4. Section Spacing */
section {
  margin-bottom: 60px;
  padding: 40px 20px;
  background: var(--color-bg-medium);
  border-radius: var(--radius-card);
  box-shadow: 0 4px 24px var(--color-shadow);
  border: 1px solid var(--color-border);
}

/* 5. Flexbox Patterns (MANDATORY) */
.card-container, .course-cards, .feature-grid, .coach-profiles, .success-story-cards, .blog-post-cards {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 20px;
}
.card, .course-cards > div, .feature-grid > div, .coach-profiles > div, .success-story-cards > div, .blog-post-cards > div {
  background: var(--color-bg-dark);
  border-radius: var(--radius-card);
  box-shadow: 0 2px 12px var(--color-shadow);
  border: 1px solid var(--color-border);
  padding: 24px 20px;
  margin-bottom: 20px;
  position: relative;
  min-width: 260px;
  flex: 1 1 260px;
  transition: box-shadow var(--transition-main), transform var(--transition-main);
}
.card:hover, .course-cards > div:hover, .feature-grid > div:hover, .coach-profiles > div:hover, .success-story-cards > div:hover, .blog-post-cards > div:hover {
  box-shadow: 0 6px 32px var(--color-shadow-strong);
  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;
}
.testimonials {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}
.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-card);
  box-shadow: 0 2px 12px var(--color-shadow);
  border-left: 6px solid var(--color-secondary);
  min-width: 260px;
  flex: 1 1 260px;
  margin-bottom: 20px;
  transition: box-shadow var(--transition-main), transform var(--transition-main);
}
.testimonial-card:hover {
  box-shadow: 0 6px 32px var(--color-shadow-strong);
  transform: translateY(-4px) scale(1.02);
}
.testimonial-card p {
  color: var(--color-text-dark);
  font-size: 1.05rem;
  margin-bottom: 0.5em;
}
.testimonial-card span {
  color: var(--color-primary);
  font-size: 0.95rem;
  font-family: var(--font-display);
  font-weight: 600;
}

.feature-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 15px;
}

/* 6. Header & Navigation */
header {
  background: var(--color-bg-dark);
  border-bottom: 2px solid var(--color-border);
  box-shadow: 0 2px 8px var(--color-shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}
header .container {
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 0 20px;
  min-height: 72px;
}
header img {
  height: 48px;
  width: auto;
  filter: grayscale(0.2) contrast(1.2) drop-shadow(0 2px 4px var(--color-shadow));
}
.main-nav {
  display: flex;
  flex-direction: row;
  gap: 28px;
  align-items: center;
}
.main-nav a {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--color-text-main);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 8px 0;
  border-bottom: 2px solid transparent;
  transition: color var(--transition-main), border-color var(--transition-main);
}
.main-nav a:hover, .main-nav a:focus {
  color: var(--color-secondary);
  border-bottom: 2px solid var(--color-secondary);
}

.cta-btn {
  background: linear-gradient(90deg, var(--color-secondary) 60%, var(--color-metal) 100%);
  color: var(--color-bg-dark);
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border: none;
  border-radius: var(--radius-btn);
  padding: 12px 32px;
  margin-left: 24px;
  box-shadow: 0 2px 8px var(--color-shadow);
  cursor: pointer;
  transition: background var(--transition-main), color var(--transition-main), box-shadow var(--transition-main), transform var(--transition-main);
  outline: none;
  font-size: 1rem;
  display: inline-block;
}
.cta-btn:hover, .cta-btn:focus {
  background: linear-gradient(90deg, var(--color-metal) 0%, var(--color-secondary) 100%);
  color: var(--color-primary);
  box-shadow: 0 6px 24px var(--color-shadow-strong);
  transform: translateY(-2px) scale(1.03);
}

/* 7. Mobile Navigation */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-secondary);
  font-size: 2rem;
  cursor: pointer;
  margin-left: 16px;
  transition: color var(--transition-main), transform var(--transition-main);
}
.mobile-menu-toggle:active {
  color: var(--color-metal);
  transform: scale(1.1);
}
.mobile-menu {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-start;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: linear-gradient(120deg, var(--color-bg-dark) 80%, var(--color-steel) 100%);
  z-index: var(--z-mobile-menu);
  transform: translateX(-100%);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.4s cubic-bezier(.4,0,.2,1), opacity 0.3s;
}
.mobile-menu.open {
  transform: translateX(0);
  opacity: 1;
  pointer-events: auto;
}
.mobile-menu-close {
  background: none;
  border: none;
  color: var(--color-secondary);
  font-size: 2.2rem;
  align-self: flex-end;
  margin: 24px 24px 0 0;
  cursor: pointer;
  transition: color var(--transition-main), transform var(--transition-main);
}
.mobile-menu-close:active {
  color: var(--color-metal);
  transform: scale(1.1);
}
.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 28px;
  width: 100%;
  align-items: flex-start;
  padding: 40px 32px;
}
.mobile-nav a {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--color-text-main);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 10px 0;
  border-bottom: 2px solid transparent;
  transition: color var(--transition-main), border-color var(--transition-main);
}
.mobile-nav a:hover, .mobile-nav a:focus {
  color: var(--color-secondary);
  border-bottom: 2px solid var(--color-secondary);
}

/* 8. Footer */
footer {
  background: var(--color-bg-dark);
  border-top: 2px solid var(--color-border);
  box-shadow: 0 -2px 8px var(--color-shadow);
  padding: 0;
}
.footer-top {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  align-items: flex-start;
  justify-content: space-between;
  padding: 40px 0 20px 0;
}
.footer-top img {
  height: 40px;
  width: auto;
  filter: grayscale(0.2) contrast(1.2);
}
.footer-menu {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-menu a {
  color: var(--color-metal);
  font-size: 0.98rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  transition: color var(--transition-main);
}
.footer-menu a:hover, .footer-menu a:focus {
  color: var(--color-secondary);
}
.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: 16px 0;
  text-align: center;
  color: var(--color-metal);
  font-size: 0.95rem;
}
.contact-info p {
  margin: 0 0 8px 0;
  color: var(--color-metal);
  font-size: 0.98rem;
}

/* 9. Blog, FAQ, and Miscellaneous */
.blog-list, .faq-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.blog-categories {
  margin: 16px 0 0 0;
  color: var(--color-metal);
  font-size: 0.98rem;
}
.blog-search {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.blog-search input[type="text"] {
  padding: 10px 14px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--color-border);
  background: var(--color-bg-dark);
  color: var(--color-text-main);
  font-size: 1rem;
  transition: border-color var(--transition-main);
}
.blog-search input[type="text"]:focus {
  border-color: var(--color-secondary);
  outline: none;
}
.faq-list > div {
  background: var(--color-bg-dark);
  border-radius: var(--radius-card);
  box-shadow: 0 2px 12px var(--color-shadow);
  border: 1px solid var(--color-border);
  padding: 20px 18px;
  margin-bottom: 20px;
}
.faq-list strong {
  display: block;
  margin-bottom: 6px;
  color: var(--color-secondary);
}

/* 10. Cookie Consent Banner & Modal */
.cookie-banner {
  position: fixed;
  left: 0;
  bottom: 0;
  width: 100vw;
  background: linear-gradient(90deg, var(--color-bg-dark) 80%, var(--color-steel) 100%);
  color: var(--color-text-main);
  box-shadow: 0 -2px 16px var(--color-shadow-strong);
  z-index: var(--z-cookie);
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  padding: 24px 20px;
  gap: 24px;
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.3s, transform 0.3s;
}
.cookie-banner.hide {
  opacity: 0;
  transform: translateY(100%);
  pointer-events: none;
}
.cookie-banner .cookie-text {
  flex: 1 1 0;
  font-size: 1rem;
  color: var(--color-text-main);
}
.cookie-banner .cookie-actions {
  display: flex;
  flex-direction: row;
  gap: 16px;
}
.cookie-btn {
  font-family: var(--font-display);
  font-size: 1rem;
  padding: 10px 22px;
  border-radius: var(--radius-btn);
  border: none;
  cursor: pointer;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  transition: background var(--transition-main), color var(--transition-main), box-shadow var(--transition-main);
  box-shadow: 0 2px 8px var(--color-shadow);
}
.cookie-btn.accept {
  background: var(--color-secondary);
  color: var(--color-bg-dark);
}
.cookie-btn.accept:hover, .cookie-btn.accept:focus {
  background: var(--color-metal);
  color: var(--color-primary);
}
.cookie-btn.reject {
  background: var(--color-danger);
  color: var(--color-text-light);
}
.cookie-btn.reject:hover, .cookie-btn.reject:focus {
  background: #b71c1c;
}
.cookie-btn.settings {
  background: var(--color-metal);
  color: var(--color-bg-dark);
}
.cookie-btn.settings:hover, .cookie-btn.settings:focus {
  background: var(--color-secondary);
  color: var(--color-primary);
}

/* Cookie Modal */
.cookie-modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(24,27,35,0.85);
  z-index: calc(var(--z-cookie) + 1);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.cookie-modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}
.cookie-modal {
  background: var(--color-bg-light);
  color: var(--color-text-main);
  border-radius: var(--radius-card);
  box-shadow: 0 8px 32px var(--color-shadow-strong);
  padding: 36px 28px 28px 28px;
  min-width: 320px;
  max-width: 95vw;
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: relative;
  animation: cookieModalIn 0.4s cubic-bezier(.4,0,.2,1);
}
@keyframes cookieModalIn {
  from { transform: translateY(60px) scale(0.95); opacity: 0; }
  to { transform: translateY(0) scale(1); opacity: 1; }
}
.cookie-modal h2 {
  color: var(--color-secondary);
  font-size: 1.3rem;
  margin-bottom: 8px;
}
.cookie-modal .cookie-category {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 12px;
}
.cookie-modal .cookie-category label {
  font-size: 1rem;
  color: var(--color-text-main);
}
.cookie-modal .cookie-toggle {
  appearance: none;
  width: 38px;
  height: 22px;
  background: var(--color-metal);
  border-radius: 12px;
  position: relative;
  outline: none;
  cursor: pointer;
  transition: background var(--transition-main);
}
.cookie-modal .cookie-toggle:checked {
  background: var(--color-secondary);
}
.cookie-modal .cookie-toggle:before {
  content: '';
  position: absolute;
  left: 3px;
  top: 3px;
  width: 16px;
  height: 16px;
  background: var(--color-bg-dark);
  border-radius: 50%;
  transition: transform var(--transition-main);
}
.cookie-modal .cookie-toggle:checked:before {
  transform: translateX(16px);
}
.cookie-modal .cookie-actions {
  display: flex;
  flex-direction: row;
  gap: 16px;
  justify-content: flex-end;
}
.cookie-modal .cookie-close {
  position: absolute;
  top: 12px;
  right: 16px;
  background: none;
  border: none;
  color: var(--color-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  transition: color var(--transition-main);
}
.cookie-modal .cookie-close:hover, .cookie-modal .cookie-close:focus {
  color: var(--color-metal);
}

/* 11. Responsive Design (Mobile-First) */
@media (max-width: 1024px) {
  .container {
    max-width: 960px;
  }
  .footer-top {
    gap: 24px;
  }
}
@media (max-width: 900px) {
  .container {
    max-width: 760px;
  }
  .footer-top {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }
}
@media (max-width: 768px) {
  html {
    font-size: 15px;
  }
  .container {
    max-width: 98vw;
    padding: 0 10px;
  }
  .main-nav {
    display: none;
  }
  .mobile-menu-toggle {
    display: block;
  }
  .cta-btn {
    margin-left: 0;
    margin-top: 0;
  }
  .card-container, .course-cards, .feature-grid, .coach-profiles, .success-story-cards, .blog-post-cards, .testimonials {
    flex-direction: column;
    gap: 20px;
  }
  .content-grid {
    flex-direction: column;
    gap: 20px;
  }
  .text-image-section {
    flex-direction: column;
    gap: 20px;
    align-items: flex-start;
  }
  .footer-top {
    flex-direction: column;
    gap: 20px;
    align-items: flex-start;
  }
  section {
    padding: 28px 8px;
    margin-bottom: 36px;
  }
  .cookie-banner {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding: 18px 10px;
  }
  .cookie-banner .cookie-actions {
    flex-direction: column;
    gap: 10px;
    width: 100%;
  }
  .cookie-modal {
    min-width: 90vw;
    padding: 24px 10px 18px 10px;
  }
}
@media (max-width: 480px) {
  html {
    font-size: 14px;
  }
  h1 {
    font-size: 1.5rem;
  }
  h2 {
    font-size: 1.15rem;
  }
  .cta-btn {
    padding: 10px 16px;
    font-size: 0.98rem;
  }
  .card, .course-cards > div, .feature-grid > div, .coach-profiles > div, .success-story-cards > div, .blog-post-cards > div, .testimonial-card {
    padding: 16px 8px;
    min-width: 0;
  }
}

/* 12. Industrial Modern Details */
.card, .course-cards > div, .feature-grid > div, .coach-profiles > div, .success-story-cards > div, .blog-post-cards > div {
  border-left: 4px solid var(--color-metal);
  background: linear-gradient(120deg, var(--color-bg-dark) 80%, var(--color-steel) 100%);
}
.card h3, .course-cards > div h3, .feature-grid > div h3, .coach-profiles > div h3, .success-story-cards > div h3, .blog-post-cards > div h3 {
  color: var(--color-secondary);
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.5em;
}

/* 13. Utility Classes */
.hide {
  display: none !important;
}
.text-center {
  text-align: center;
}
.uppercase {
  text-transform: uppercase;
}

/* 14. Focus Styles for Accessibility */
a:focus, button:focus, .cta-btn:focus, .cookie-btn:focus, .mobile-menu-toggle:focus, .mobile-menu-close:focus {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
}

/* 15. Micro-interactions */
.cta-btn, .cookie-btn, .mobile-menu-toggle, .mobile-menu-close {
  transition: background var(--transition-main), color var(--transition-main), box-shadow var(--transition-main), transform var(--transition-main);
}

/* 16. Prevent Overlapping & Ensure Spacing */
.card, .course-cards > div, .feature-grid > div, .coach-profiles > div, .success-story-cards > div, .blog-post-cards > div, .testimonial-card, .faq-list > div {
  margin-bottom: 20px;
}
section, .card-container, .course-cards, .feature-grid, .coach-profiles, .success-story-cards, .blog-post-cards, .testimonials {
  gap: 24px;
}

/* 17. No CSS Grid or Columns Used - Flexbox Only */
/* --- END OF CSS --- */