/* Keviltub – Creative Performance Hub & Digital Movement Studio
   Subdomain: keviltub.frontlinedance.co.uk
   Aligned with frontlinedance.co.uk visual language */

:root {
  --color-primary: #1a1a2e;
  --color-secondary: #16213e;
  --color-accent: #e94560;
  --color-accent-soft: #c73e54;
  --color-light: #f5f5f5;
  --color-muted: #6b7280;
  --color-white: #ffffff;
  --font-heading: 'Georgia', 'Times New Roman', serif;
  --font-body: 'Segoe UI', system-ui, sans-serif;
  --max-width: 1200px;
  --section-padding: 4rem 1.5rem;
  --transition: 0.3s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-primary);
  background: var(--color-white);
  overflow-x: hidden;
}

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

img[loading="lazy"] {
  opacity: 0;
  transition: opacity 0.4s ease;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-accent-soft);
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -3rem;
  left: 1rem;
  padding: 0.75rem 1rem;
  background: var(--color-accent);
  color: var(--color-white);
  z-index: 100;
  border-radius: 4px;
  transition: top var(--transition);
}

.skip-link:focus {
  top: 1rem;
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(26, 26, 46, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.site-header .inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 600;
}

.site-logo img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.nav-main {
  display: flex;
  align-items: center;
}

.nav-main .nav-list {
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
  gap: 0.25rem 0;
  list-style: disc;
  margin: 0;
  padding-left: 1.5rem;
  color: rgba(255, 255, 255, 0.85);
}

@media (min-width: 768px) {
  .nav-main .nav-list {
    flex-direction: row;
    gap: 0.5rem 1.5rem;
    padding-left: 1.5rem;
  }
}

.nav-main .nav-list a {
  color: #e5e7eb;
  padding: 0.35rem 0;
  font-size: 0.95rem;
}

.nav-main .nav-list a:hover {
  color: var(--color-accent);
}

/* Page banner (hero & subpages) */
.page-banner {
  position: relative;
  min-height: 60vh;
  max-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-secondary) center/cover no-repeat;
  color: var(--color-white);
  text-align: center;
  overflow: hidden;
}

.page-banner .banner-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.page-banner::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0.6) 100%);
  pointer-events: none;
}

.page-banner .banner-inner {
  position: relative;
  z-index: 1;
  max-width: 800px;
  padding: 2rem 1.5rem;
}

.page-banner h1 {
  margin: 0 0 1rem;
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 600;
  line-height: 1.2;
  text-shadow: 0 2px 8px rgba(0,0,0,0.4);
}

.page-banner .banner-lead {
  margin: 0;
  font-size: 1.15rem;
  opacity: 0.95;
  text-shadow: 0 1px 4px rgba(0,0,0,0.3);
}

/* Sections */
.section {
  padding: var(--section-padding);
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  margin: 0 0 1rem;
  color: var(--color-primary);
}

.section-lead {
  font-size: 1.1rem;
  color: var(--color-muted);
  margin: 0 0 2rem;
  max-width: 640px;
}

/* About block */
.about-grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 768px) {
  .about-grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

/* Programs / cards */
.card-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card {
  background: var(--color-light);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid rgba(0,0,0,0.06);
  transition: box-shadow var(--transition), transform var(--transition);
}

.card:hover {
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  transform: translateY(-2px);
}

.card-image {
  aspect-ratio: 16/10;
  background: var(--color-secondary);
  object-fit: cover;
}

.card-body {
  padding: 1.5rem;
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  margin: 0 0 0.5rem;
}

.card-text {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.95rem;
}

/* Testimonials */
.testimonials {
  background: var(--color-primary);
  color: var(--color-white);
}

.testimonials .section-title {
  color: var(--color-white);
}

.testimonials .section-lead {
  color: rgba(255,255,255,0.8);
}

.testimonial-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.testimonial-card {
  background: rgba(255,255,255,0.06);
  border-radius: 8px;
  padding: 1.5rem;
  border-left: 4px solid var(--color-accent);
}

.testimonial-card blockquote {
  margin: 0 0 1rem;
  font-style: italic;
  font-size: 0.98rem;
}

.testimonial-card cite {
  font-size: 0.9rem;
  opacity: 0.9;
  font-style: normal;
}

/* CTA */
.cta-section {
  text-align: center;
  padding: 3rem 1.5rem;
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
  color: var(--color-white);
}

.cta-section .section-title {
  color: var(--color-white);
  margin-bottom: 1rem;
}

.cta-section .section-lead {
  color: rgba(255,255,255,0.9);
  margin: 0 auto 1.5rem;
}

.btn {
  display: inline-block;
  padding: 0.875rem 1.75rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 6px;
  transition: background var(--transition), color var(--transition), transform var(--transition);
  border: none;
  cursor: pointer;
}

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

.btn-primary:hover {
  background: var(--color-accent-soft);
  color: var(--color-white);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255,255,255,0.8);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.15);
  color: var(--color-white);
}

/* Footer */
.site-footer {
  background: var(--color-primary);
  color: rgba(255,255,255,0.85);
  padding: 3rem 1.5rem 1.5rem;
}

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

.footer-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  margin-bottom: 2rem;
}

.footer-grid h3 {
  font-size: 1rem;
  margin: 0 0 1rem;
  color: var(--color-white);
  font-family: var(--font-body);
  font-weight: 600;
}

.footer-grid ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-grid a {
  color: rgba(255,255,255,0.8);
}

.footer-grid a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.9rem;
  text-align: center;
  color: rgba(255,255,255,0.7);
}

/* Breadcrumb */
.breadcrumb {
  padding: 0.75rem 1.5rem;
  background: var(--color-light);
  font-size: 0.9rem;
}

.breadcrumb-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.breadcrumb nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.breadcrumb a {
  color: var(--color-muted);
}

.breadcrumb span[aria-current] {
  color: var(--color-primary);
  font-weight: 500;
}

/* Blog list */
.blog-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.5rem;
}

.blog-list article {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .blog-list article {
    grid-template-columns: 280px 1fr;
  }
}

.blog-list .blog-thumb {
  aspect-ratio: 16/10;
  object-fit: cover;
  border-radius: 6px;
  background: var(--color-secondary);
}

.blog-list h2 {
  font-size: 1.2rem;
  margin: 0 0 0.5rem;
}

.blog-list .meta {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin-bottom: 0.5rem;
}

/* Contact form */
.contact-form-wrap {
  max-width: 560px;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.35rem;
  font-weight: 500;
  font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.65rem 0.85rem;
  font-family: inherit;
  font-size: 1rem;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

/* FAQ */
.faq-list {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: 720px;
}

.faq-list li {
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(0,0,0,0.08);
}

.faq-list li:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.faq-list strong {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 1.05rem;
}

.faq-list p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.98rem;
}

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

.text-center { text-align: center; }
.mb-0 { margin-bottom: 0; }