/* ============================================
   KELIBATMU V2 - PAGE LAYOUT STYLES
   Owner: page.css - Layout Structure Only
   Phase 2B: Mobile Section Rhythm Compaction
   Continuous immersive streaming-app flow
   Compact premium mobile spacing
   ============================================ */

/* -------------------- SECTION SPACING -------------------- */
section {
  margin-bottom: var(--space-lg);
}

section:last-child {
  margin-bottom: 0;
}

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

.hero-section h1 {
  font-size: var(--kv2-font-hero);
  line-height: var(--kv2-line-hero);
  letter-spacing: var(--kv2-track-hero);
  margin-bottom: var(--space-sm);
  background: linear-gradient(
    135deg,
    var(--color-text-primary) 0%,
    var(--color-text-secondary) 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-subtitle {
  font-size: var(--kv2-font-body);
  line-height: var(--kv2-line-body);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* -------------------- SECTION HEADERS -------------------- */
.section-header {
  margin-bottom: var(--space-md);
  text-align: center;
}

.section-header h2 {
  margin-bottom: var(--space-xs);
}

.section-description {
  color: var(--color-text-secondary);
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

/* -------------------- GRID SYSTEMS -------------------- */
.featured-grid,
.music-grid,
.team-grid,
.recent-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

/* -------------------- PLACEHOLDER CARDS -------------------- */
.placeholder-card {
  background-color: var(--color-gray-dark);
  border-radius: 12px;
  padding: var(--space-lg);
  border: 1px solid var(--color-gray-mid);
  transition: all var(--transition-smooth) var(--ease-calm);
  position: relative;
  z-index: var(--z-cards);
}

.placeholder-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--glow-subtle);
  border-color: var(--accent-crimson);
}

.placeholder-card h3 {
  font-size: var(--kv2-font-card-title);
  line-height: var(--kv2-line-card-title);
  margin-bottom: var(--space-sm);
}

.placeholder-card p {
  color: var(--color-text-secondary);
  font-size: var(--kv2-font-small);
  margin-bottom: var(--space-md);
}

.placeholder-card-small {
  background-color: var(--color-gray-dark);
  border-radius: 8px;
  padding: var(--space-md);
  border: 1px solid var(--color-gray-mid);
  transition: all var(--transition-fast) var(--ease-standard);
}

.placeholder-card-small:hover {
  transform: translateY(-1px);
  border-color: var(--accent-crimson);
}

.placeholder-card-small p {
  font-size: var(--text-sm);
  margin-bottom: 0;
  color: var(--color-text-secondary);
}

/* ============================================
   CONTACT PAGE — CINEMATIC REFINEMENT
   Quiet correspondence room atmosphere
   ============================================ */

/* Contact Header Refinement */
.contact-header h1 {
  font-size: var(--kv2-font-page-title);
  line-height: var(--kv2-line-page-title);
  letter-spacing: var(--kv2-track-page-title);
  margin-bottom: var(--space-xs);
}

.contact-header .section-description {
  font-size: var(--kv2-font-small);
  color: rgba(230, 230, 240, 0.65);
  font-style: italic;
  letter-spacing: 0.2px;
}

/* Contact Grid — Balanced Asymmetry */
.contact-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: var(--space-xl);
  margin-top: var(--space-lg);
}

/* Left Panel — Cinematic Atmosphere */
.contact-info {
  padding: var(--space-md) 0;
}

.contact-info h2 {
  font-size: var(--kv2-font-section-title);
  line-height: var(--kv2-line-section-title);
  margin-bottom: var(--space-md);
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.95),
    rgba(200, 160, 160, 0.8)
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.contact-item {
  position: relative;
}

.contact-item h3 {
  font-size: var(--kv2-font-meta);
  margin-bottom: var(--space-xs);
  color: rgba(200, 160, 160, 0.8);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 400;
}

.contact-item p {
  color: var(--color-text-primary);
  font-size: var(--kv2-font-body);
  line-height: var(--kv2-line-body);
}

/* Social Links — Micro-Pill Refinement */
.social-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.social-links li {
  display: inline-block;
}

.social-links a {
  display: inline-flex;
  align-items: center;
  color: rgba(230, 230, 240, 0.75);
  font-size: var(--kv2-font-small);
  text-decoration: none;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(10, 10, 15, 0.3);
  transition: all 0.3s cubic-bezier(0.2, 0.9, 0.4, 1.1);
}

.social-links a:hover {
  color: rgba(200, 160, 160, 0.95);
  border-color: rgba(139, 44, 44, 0.3);
  background: rgba(139, 44, 44, 0.08);
  transform: translateX(2px);
}

/* Form Wrapper — Cinematic Atmospheric Depth */
.contact-form-wrapper {
  background: rgba(10, 10, 15, 0.25);
  backdrop-filter: blur(8px);
  border-radius: 28px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  padding: 2rem;
  position: relative;
  transition: all 0.4s cubic-bezier(0.2, 0.9, 0.4, 1.1);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.3);
}

/* Subtle Ambient Radial Highlight */
.contact-form-wrapper::before {
  content: '';
  position: absolute;
  top: -1px;
  left: -1px;
  right: -1px;
  bottom: -1px;
  background: radial-gradient(
    ellipse at 30% 20%,
    rgba(139, 44, 44, 0.06),
    transparent 70%
  );
  border-radius: 28px;
  pointer-events: none;
  z-index: -1;
  opacity: 0;
  transition: opacity 0.6s ease;
}

.contact-form-wrapper:hover::before {
  opacity: 1;
}

.contact-form-wrapper h2 {
  font-size: var(--kv2-font-section-title);
  line-height: var(--kv2-line-section-title);
  margin-bottom: var(--space-lg);
  color: var(--color-text-primary);
  font-weight: 500;
  letter-spacing: -0.2px;
}

/* Form Messages — Cinematic Styling */
.form-message {
  margin-bottom: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  border-radius: 16px;
  border: 1px solid var(--color-gray-light);
  background: rgba(26, 26, 26, 0.72);
  color: var(--color-text-secondary);
  font-size: var(--kv2-font-small);
  backdrop-filter: var(--blur-bg);
}

.form-message-success {
  border-color: rgba(196, 163, 90, 0.35);
  color: var(--accent-amber);
  box-shadow: var(--glow-focus);
}

.form-message-error {
  border-color: rgba(139, 44, 44, 0.55);
  color: var(--accent-dusty-rose);
  box-shadow: var(--glow-subtle);
}

/* Form Groups — Refined Spacing */
.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--space-xs);
  font-size: var(--kv2-font-meta);
  color: rgba(230, 230, 240, 0.7);
  letter-spacing: 0.3px;
}

/* Form Inputs — Minimal Premium */
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  background: rgba(15, 15, 20, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  color: var(--color-text-primary);
  font-size: var(--kv2-font-small);
  line-height: var(--kv2-line-small);
  transition: all 0.3s cubic-bezier(0.2, 0.9, 0.4, 1.1);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: rgba(139, 44, 44, 0.4);
  background: rgba(20, 20, 28, 0.7);
  box-shadow: 0 0 0 3px rgba(139, 44, 44, 0.08);
}

/* Textarea — Intimate Height */
.form-group textarea {
  min-height: 130px;
  resize: vertical;
  font-family: inherit;
}

/* Form Errors */
.form-error {
  margin-top: var(--space-xs);
  color: var(--accent-dusty-rose);
  font-size: var(--kv2-font-caption);
  line-height: 1.4;
  padding-left: 4px;
}

/* Submit Button — Pill-Shaped Cinematic Refinement */
.btn-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(139, 44, 44, 0.85);
  color: rgba(255, 255, 255, 0.95);
  border: none;
  border-radius: 999px;
  padding: 12px 28px;
  font-size: var(--kv2-font-button);
  font-weight: 500;
  letter-spacing: 0.3px;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.2, 0.9, 0.4, 1.1);
  margin-top: var(--space-sm);
  width: auto;
  min-width: 160px;
}

.btn-submit:hover {
  background: rgba(139, 44, 44, 1);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px -8px rgba(139, 44, 44, 0.4);
}

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

/* -------------------- HOME PAGE -------------------- */
.home-page .hero-section,
body:has(.hero-unit) .hero-section {
  padding: var(--space-lg) 0 var(--space-md) 0;
}

.hero-unit {
  text-align: center;
  margin-bottom: 0;
  padding: 0;
}

.hero-title {
  font-size: var(--kv2-font-page-title);
  font-weight: var(--kv2-weight-page-title);
  letter-spacing: var(--kv2-track-page-title);
  line-height: var(--kv2-line-page-title);
  margin-bottom: 0.2rem;
  background: linear-gradient(
    135deg,
    var(--color-text-primary) 0%,
    var(--color-text-secondary) 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-tagline {
  font-size: var(--kv2-font-small);
  font-weight: 400;
  color: var(--color-text-secondary);
  opacity: 0.6;
  margin: 0;
  letter-spacing: 0.3px;
}

.no-songs-message {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-lg);
  color: var(--color-text-muted);
  background-color: var(--color-gray-dark);
  border-radius: 16px;
  border: 1px solid var(--color-gray-mid);
}

.home-page .hero-section,
body:has(.featured-section:first-child) .hero-section {
  display: none;
}

.featured-section:first-child {
  margin-top: var(--space-md);
  padding-top: var(--space-sm);
}

/* -------------------- BLOG PREVIEW SECTION -------------------- */
.blog-preview-section {
  margin-bottom: 0;
}

.blog-preview-footer {
  margin-top: var(--space-md);
}

/* -------------------- RECENTLY ADDED SECTION -------------------- */
.recent-added-section {
  margin: var(--space-xl) 0;
  width: 100%;
  position: relative;
}

.recent-added-container {
  max-width: var(--container-max-desktop);
  width: 90%;
  margin: 0 auto;
  padding: 0;
  position: relative;
}

.recent-added-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
  width: 100%;
  position: relative;
  z-index: 1;
}

.recent-added-header-left {
  flex: 1;
}

.recent-added-title {
  font-size: var(--kv2-font-section-title);
  font-weight: var(--kv2-weight-section-title);
  letter-spacing: var(--kv2-track-section-title);
  line-height: var(--kv2-line-section-title);
  background: linear-gradient(
    135deg,
    var(--color-text-primary) 0%,
    var(--color-text-secondary) 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 4px;
}

.recent-added-subtitle {
  font-size: var(--kv2-font-caption);
  color: var(--color-text-muted);
  opacity: 0.6;
  letter-spacing: 0.2px;
}

.recent-added-see-all {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--kv2-font-button);
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: 40px;
  transition: all var(--transition-fast) var(--ease-premium);
  white-space: nowrap;
}

.recent-added-see-all svg {
  width: 14px;
  height: 14px;
  stroke: currentColor;
  transition: transform var(--transition-fast) var(--ease-premium);
}

.recent-added-see-all:hover {
  color: var(--accent-crimson);
  background: rgba(139, 44, 44, 0.08);
}

.recent-added-see-all:hover svg {
  transform: translateX(2px);
}

.recent-added-rail-wrapper {
  position: relative;
  width: 100%;
}

.recent-added-rail {
  display: flex;
  gap: var(--space-md);
  overflow-x: auto;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--accent-crimson) rgba(255, 255, 255, 0.1);
  padding: 4px 0 12px 0;
}

.recent-added-rail::-webkit-scrollbar {
  height: 4px;
}

.recent-added-rail::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 4px;
}

.recent-added-rail::-webkit-scrollbar-thumb {
  background: var(--accent-crimson);
  border-radius: 4px;
}

.recent-rail-card {
  flex-shrink: 0;
  width: 180px;
}

.rail-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(20, 20, 20, 0.75);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast) var(--ease-premium);
  opacity: 0;
  z-index: 10;
}

.recent-added-rail-wrapper:hover .rail-nav {
  opacity: 1;
}

.rail-nav:hover {
  background: var(--accent-crimson);
  border-color: transparent;
  transform: translateY(-50%) scale(1.05);
}

.rail-nav svg {
  width: 18px;
  height: 18px;
  stroke: var(--color-text-primary);
  stroke-width: 2;
}

.rail-nav-prev {
  left: -18px;
}

.rail-nav-next {
  right: -18px;
}

/* -------------------- ABOUT PREVIEW SECTION -------------------- */
.about-preview-section {
  margin: 0;
  padding: 0;
}

/* -------------------- CTA SECTION -------------------- */
.cta-section {
  margin: 0;
  padding: var(--space-xl) 0;
}

.cta-content {
  text-align: center;
  max-width: 500px;
  margin: 0 auto;
}

.cta-title {
  font-size: var(--kv2-font-section-title);
  font-weight: var(--kv2-weight-section-title);
  letter-spacing: var(--kv2-track-section-title);
  line-height: var(--kv2-line-section-title);
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
}

.cta-text {
  font-size: var(--kv2-font-body);
  line-height: var(--kv2-line-body);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
}

/* -------------------- Z-INDEX LAYERING -------------------- */
.main-content {
  position: relative;
  z-index: var(--z-cards);
}

.footer {
  position: relative;
  z-index: var(--z-cards);
}

/* -------------------- NO CONTENT MESSAGE -------------------- */
.no-content-message {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-xl);
  color: var(--color-text-muted);
  background-color: var(--color-gray-dark);
  border-radius: 16px;
  border: 1px solid var(--color-gray-mid);
}

/* -------------------- RESPONSIVE LAYOUT RULES -------------------- */
@media (max-width: 1023px) {
  .recent-added-rail-wrapper {
    overflow: visible;
  }

  .recent-added-rail {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    overflow: visible;
    scrollbar-width: none;
  }

  .recent-rail-card {
    width: 100%;
  }

  .rail-nav {
    display: none;
  }
}

@media (max-width: 768px) {
  .featured-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }

  .featured-section .section-header h2 {
    font-size: var(--kv2-font-section-title);
  }

  .recent-added-container {
    width: 92%;
  }

  .recent-added-rail {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
    overflow: visible;
  }

  .recent-rail-card {
    width: 100%;
  }

  .recent-added-title {
    font-size: var(--kv2-font-card-title);
  }

  .recent-added-subtitle {
    font-size: var(--kv2-font-caption);
  }

  .recent-added-header {
    margin-bottom: var(--space-md);
  }

  .rail-nav {
    display: none;
  }

  .cta-title {
    font-size: var(--kv2-font-section-title);
  }

  .cta-text {
    font-size: var(--kv2-font-small);
  }

  .featured-section:first-child {
    margin-top: var(--space-md);
    padding-top: var(--space-xs);
  }

  .home-page .hero-section,
  body:has(.hero-unit) .hero-section {
    padding: var(--space-md) 0 var(--space-sm) 0;
  }

  .hero-title {
    font-size: var(--kv2-font-page-title);
  }

  .hero-tagline {
    font-size: var(--kv2-font-small);
  }

  /* Mobile Section Rhythm Compaction */
  .blog-preview-section {
    margin-bottom: 0;
  }
  
  .blog-preview-section .container {
    padding-bottom: 0;
  }
  
  .blog-preview-footer {
    margin-top: var(--space-sm);
    margin-bottom: 0;
    padding-bottom: 0;
  }
  
  .about-preview-section {
    margin-top: 0;
    padding-top: 0;
  }
  
  .about-preview-content {
    padding: var(--space-xs) 0;
  }
  
  .cta-section {
    padding: var(--space-md) 0;
    margin-top: 0;
  }
  
  .cta-content {
    padding: var(--space-sm) 0;
  }
  
  .footer {
    margin-top: 0;
  }

  /* Contact Page Responsive */
  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .contact-info {
    padding: 0;
  }

  .contact-form-wrapper {
    padding: 1.5rem;
  }

  .social-links {
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--space-xs);
  }

  .social-links a {
    padding: 5px 12px;
    font-size: var(--kv2-font-caption);
  }
}

@media (max-width: 480px) {
  .featured-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
    max-width: 100%;
    margin-left: 0;
    margin-right: 0;
  }

  .recent-added-rail {
    gap: var(--space-sm);
  }

  .recent-added-see-all {
    padding: 4px 8px;
    font-size: var(--kv2-font-caption);
  }

  .recent-added-title {
    font-size: var(--kv2-font-card-title);
  }

  .cta-section {
    padding: var(--space-sm) 0;
  }

  .cta-title {
    font-size: var(--kv2-font-card-title);
  }

  .hero-title {
    font-size: var(--kv2-font-page-title);
  }

  .hero-tagline {
    font-size: var(--kv2-font-caption);
  }
  
  /* Extra Small Mobile Tightening */
  .blog-preview-footer {
    margin-top: var(--space-xs);
  }
  
  .about-preview-content {
    padding-top: 0;
    padding-bottom: var(--space-xs);
  }
  
  .cta-section {
    padding: var(--space-xs) 0;
  }
  
  .cta-content {
    padding: 0;
  }

  /* Contact Extra Small */
  .contact-form-wrapper {
    padding: 1.25rem;
    border-radius: 24px;
  }

  .contact-form-wrapper h2 {
    font-size: var(--kv2-font-card-title);
    margin-bottom: var(--space-md);
  }

  .form-group input,
  .form-group textarea,
  .form-group select {
    padding: 10px 14px;
  }

  .btn-submit {
    padding: 10px 24px;
    min-width: 140px;
    width: 100%;
  }

  .contact-header h1 {
    font-size: var(--kv2-font-page-title);
  }

  .contact-header .section-description {
    font-size: var(--kv2-font-caption);
  }
}

@media (max-width: 1024px) and (min-width: 769px) {
  .featured-grid {
    gap: var(--space-md);
  }
}