/* ============================================
   SACRED VERSES - MAIN STYLES
   ============================================ */

/* ===========================================
   LAYOUT VARIABLES
   =========================================== */

:root {
  /* Layout dimensions */
  --container-max-width: 1600px;
  --container-padding: 2rem;
  --content-spacing: 4rem;
  
  /* Component heights */
  --nav-height: 5rem;
  --footer-height: 3rem;
  
  /* Border radius values */
  --border-radius: 0.5rem;
  --border-radius-large: 1rem;
  
  /* Transition timings */
  --transition-fast: 0.2s ease-out;
  --transition-normal: 0.4s ease-out;
  --transition-slow: 0.8s ease-out;
  
  /* Z-index layers */
  --z-index-background: -1;
  --z-index-content: 1;
  --z-index-navigation: 10;
  --z-index-overlay: 20;
  --z-index-modal: 30;
}

/* ===========================================
   RESET & BASE STYLES
   =========================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  height: 100%;
  scroll-behavior: smooth;
}

body {
  height: 100vh;
  background: var(--bg-gradient);
  color: var(--text-primary);
  transition: 
    background var(--transition-slow),
    color var(--transition-normal);
  overflow-x: hidden;
  overflow-y: auto;
  font-family: var(--font-primary, 'Inter', sans-serif);
}

/* ===========================================
   APP LAYOUT
   =========================================== */

.app-container {
  height: 100vh;
  position: relative;
  display: flex;
  flex-direction: column;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0;
  background: transparent;
}

.verse-main,
#main-content,
.verse-container {
  background: transparent;
}

/* ===========================================
   HEADER STYLES
   =========================================== */

.app-header {
  display: none;
}

/* ===========================================
   MAIN CONTENT LAYOUT
   =========================================== */

.verse-main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 2rem;
  min-height: 0;
}

.verse-container {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  position: relative;
}

/* ===========================================
   VERSE TEXT STYLING
   =========================================== */

.verse-text {
  font-size: clamp(1.5rem, 4vw, 3rem);
  line-height: 1.4;
  font-weight: 400;
  color: var(--text-primary);
  margin-bottom: 2rem;
  text-align: center;
  hyphens: auto;
  word-break: break-word;
  
  /* Typography enhancement */
  font-feature-settings: "kern" 1, "liga" 1, "calt" 1;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  
  /* Animation support */
  opacity: 1;
  visibility: visible;
}

.verse-reference {
  font-size: clamp(1rem, 2.5vw, 1.5rem);
  color: var(--text-secondary);
  font-weight: 500;
  letter-spacing: 0.02em;
  
  /* Animation support */
  opacity: 1;
  visibility: visible;
}

/* ===========================================
   LOADING STATE
   =========================================== */

#loading-state {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease-out;
}

.loading-content {
  text-align: center;
  color: var(--text-primary);
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-color);
  border-top: 3px solid var(--accent-primary);
  border-radius: 50%;
  animation: loadingSpinner 1s linear infinite;
  margin: 0 auto 1rem;
}

@keyframes loadingSpinner {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.loading-text {
  font-size: 1rem;
  color: var(--text-secondary);
}

/* ===========================================
   ERROR STATES
   =========================================== */

.error-message {
  text-align: center;
  padding: 2rem;
  background: var(--bg-secondary);
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
  max-width: 400px;
  margin: 0 auto;
}

.error-message h2 {
  color: var(--accent-secondary);
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.error-message p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

.error-message button {
  background: var(--accent-primary);
  color: var(--bg-primary);
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.error-message button:hover {
  background: var(--accent-secondary);
  transform: translateY(-1px);
}

/* ===========================================
   ACCESSIBILITY SUPPORT
   =========================================== */

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  .loading-spinner {
    animation: none;
    border-top-color: var(--accent-primary);
  }
}

/* High contrast support */
@media (prefers-contrast: high) {
  :root {
    --border-color: currentColor;
    --shadow-color: transparent;
  }
  
  .verse-text,
  .verse-reference {
    font-weight: 600;
    text-shadow: none;
  }
}

/* ===========================================
   RESPONSIVE DESIGN
   =========================================== */

/* Mobile devices */
@media (max-width: 768px) {
  .verse-main {
    padding: 1rem;
  }
  
  .verse-text {
    font-size: clamp(1.25rem, 6vw, 2rem);
    line-height: 1.3;
    margin-bottom: 1.5rem;
  }
  
  .verse-reference {
    font-size: clamp(0.875rem, 4vw, 1.25rem);
  }
}

/* Large screens */
@media (min-width: 1200px) {
  .verse-main {
    padding: 3rem;
  }
  
  .verse-container {
    max-width: 900px;
  }
}

/* Very large screens */
@media (min-width: 1600px) {
  .verse-container {
    max-width: 1600px;
  }
  
  .verse-text {
    font-size: clamp(2rem, 3vw, 3.5rem);
  }
}

/* Print styles */
@media print {
  body {
    background: white !important;
    color: black !important;
  }
  
  .navigation,
  #loading-state,
  .error-message button {
    display: none !important;
  }
  
  .verse-main {
    height: auto;
    padding: 2rem;
  }
  
  .verse-text {
    font-size: 2rem !important;
    color: black !important;
  }
  
  .verse-reference {
    font-size: 1.25rem !important;
    color: #666 !important;
  }
}

/* ===========================================
   APP LOADED STATE
   =========================================== */

.app-loaded .verse-text {
  visibility: visible;
  opacity: 1;
}

.app-loaded #loading-state {
  display: none;
}

/* Background Image System */
.background-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: var(--z-index-background, -1);
  overflow: hidden;
  pointer-events: none;
}

.background-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0;
  transform: scale(1.05);
  will-change: opacity, transform;
  transition: none;
}

/* Ensure verse content stays above background */
.verse-main {
  position: relative;
  z-index: var(--z-index-content, 1);
  background: transparent;
}

/* Background error handling */
.background-image.error {
  background-image: none;
  background-color: var(--bg-primary);
  opacity: 0.1;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .background-image {
    background-size: cover;
    background-position: center;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .background-image {
    transform: none !important;
    transition: opacity 0.3s ease !important;
  }
}