/* ==========================================================================
   James Pearson Music - Modern CSS Framework
   ========================================================================== */

/* Google Fonts - DM Sans */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@300;400;500;700&display=swap');

/* ==========================================================================
   CSS Custom Properties - Light Mode (Default)
   ========================================================================== */

:root {
  /* Colors - Light Mode */
  --primary: #0066CC;
  --primary-hover: #0052A3;
  --accent: #00A8CC;
  --accent-hover: #008BAA;
  
  --bg: #FFFFFF;
  --surface: #F5F9FA;
  --surface-hover: #E8F3F7;
  
  --text: #1A1D29;
  --text-secondary: #5A5E6B;
  --text-muted: #8B8F9C;
  
  --border: #E0E4E8;
  --border-hover: #C5CAD1;
  
  --success: #00C853;
  --error: #D32F2F;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 4px 6px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;
  
  /* Typography */
  --font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
  
  /* Layout */
  --container-max-width: 1200px;
  --header-height: 80px;
}

/* ==========================================================================
   Dark Mode
   ========================================================================== */

@media (prefers-color-scheme: dark) {
  :root {
    --primary: #3D9FFF;
    --primary-hover: #66B3FF;
    --accent: #00C8E8;
    --accent-hover: #33D6F0;
    
    --bg: #1A1D29;
    --surface: #252834;
    --surface-hover: #2F3342;
    
    --text: #E8EEF2;
    --text-secondary: #B8BDC7;
    --text-muted: #8B8F9C;
    
    --border: #3A3E4F;
    --border-hover: #4A4E5F;
    
    --success: #4CAF50;
    --error: #EF5350;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 1px 3px rgba(0, 0, 0, 0.4), 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 4px 6px rgba(0, 0, 0, 0.5), 0 2px 4px rgba(0, 0, 0, 0.4);
  }
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--text);
  background-color: var(--bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ==========================================================================
   Typography
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: var(--line-height-tight);
  color: var(--text);
  margin-bottom: var(--space-md);
}

h1 {
  font-size: var(--font-size-4xl);
  font-weight: 700;
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

h5 {
  font-size: var(--font-size-lg);
}

h6 {
  font-size: var(--font-size-base);
}

p {
  margin-bottom: var(--space-md);
  color: var(--text-secondary);
}

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

a:hover {
  color: var(--primary-hover);
}

a:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

strong, b {
  font-weight: 700;
}

em, i {
  font-style: italic;
}

hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: var(--space-lg) 0;
}

/* ==========================================================================
   Layout
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

main {
  flex: 1;
  padding: var(--space-xl) 0;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
  gap: var(--space-lg);
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.site-logo h1 {
  font-size: var(--font-size-2xl);
  margin: 0;
  color: var(--primary);
}

.logo-image {
  width: 60px;
  height: 60px;
  object-fit: cover;
  border-radius: var(--radius-md);
}

/* Navigation */
nav {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav-links {
  display: flex;
  gap: var(--space-sm);
  list-style: none;
}

.nav-links a {
  display: block;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  font-weight: 500;
  transition: background-color var(--transition-base), color var(--transition-base);
}

.nav-links a:hover {
  background-color: var(--surface-hover);
}

.nav-links a:focus {
  outline: 2px solid var(--primary);
  outline-offset: -2px;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
}

.menu-icon {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--space-sm);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base);
}

.menu-icon:hover {
  background-color: var(--surface-hover);
}

.menu-icon span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--text);
  border-radius: var(--radius-full);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

/* Mobile Navigation */
@media (max-width: 767px) {
  .menu-icon {
    display: flex;
  }
  
  .nav-links {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--surface);
    flex-direction: column;
    gap: 0;
    padding: var(--space-md);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity var(--transition-base), 
                visibility var(--transition-base),
                transform var(--transition-base);
  }
  
  .menu-toggle:checked ~ .nav-links {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  
  .menu-toggle:checked ~ .menu-icon span:nth-child(1) {
    transform: rotate(45deg) translateY(7px);
  }
  
  .menu-toggle:checked ~ .menu-icon span:nth-child(2) {
    opacity: 0;
  }
  
  .menu-toggle:checked ~ .menu-icon span:nth-child(3) {
    transform: rotate(-45deg) translateY(-7px);
  }
  
  .nav-links a {
    padding: var(--space-md);
    border-radius: var(--radius-md);
  }
}

/* ==========================================================================
   Footer
   ========================================================================== */

footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: var(--space-xl) 0;
  margin-top: var(--space-2xl);
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  justify-content: space-between;
  align-items: center;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  list-style: none;
}

.footer-links a {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.footer-search {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
}

.footer-search label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

/* ==========================================================================
   Cards
   ========================================================================== */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: transform var(--transition-base), 
              box-shadow var(--transition-base),
              border-color var(--transition-base);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-hover);
}

.card-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.card-subtitle {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-md);
}

.card-content {
  color: var(--text-secondary);
}

/* ==========================================================================
   Grid Layouts
   ========================================================================== */

.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid-2 {
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
}

.grid-auto {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

@media (max-width: 767px) {
  .grid-2,
  .grid-3,
  .grid-auto {
    grid-template-columns: 1fr;
  }
}

/* Two Column Layout */
.two-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

@media (max-width: 767px) {
  .two-column {
    grid-template-columns: 1fr;
  }
}

/* Track Navigation */
.track-navigation {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
  margin: var(--space-xl) 0 var(--space-2xl) 0;
}

.nav-prev {
  display: flex;
  justify-content: flex-start;
}

.nav-next {
  display: flex;
  justify-content: flex-end;
  margin-left: auto;
}

@media (max-width: 767px) {
  .track-navigation {
    flex-direction: column;
    gap: var(--space-sm);
  }
  
  .nav-prev,
  .nav-next {
    width: 100%;
    justify-content: center;
  }
  
  .nav-next {
    margin-left: 0;
  }
}

/* ==========================================================================
   Tables
   ========================================================================== */

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

thead {
  background: var(--surface-hover);
}

th {
  font-weight: 600;
  text-align: left;
  padding: var(--space-md);
  color: var(--text);
  border-bottom: 2px solid var(--border);
}

td {
  padding: var(--space-md);
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
}

tr:last-child td {
  border-bottom: none;
}

tbody tr {
  transition: background-color var(--transition-fast);
}

tbody tr:hover {
  background-color: var(--surface-hover);
}

/* Responsive Tables */
@media (max-width: 767px) {
  .table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
}

/* ==========================================================================
   Forms
   ========================================================================== */

form {
  width: 100%;
}

.form-group {
  margin-bottom: var(--space-lg);
}

label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--space-sm);
  color: var(--text);
}

input[type="text"],
input[type="email"],
input[type="search"],
input[type="number"],
textarea,
select {
  width: 100%;
  padding: var(--space-md);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-base), 
              box-shadow var(--transition-base);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

textarea {
  min-height: 120px;
  resize: vertical;
}

/* Checkbox & Radio */
input[type="checkbox"],
input[type="radio"] {
  width: 18px;
  height: 18px;
  margin-right: var(--space-sm);
  cursor: pointer;
  accent-color: var(--primary);
}

.checkbox-group,
.radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  align-items: center;
}

.checkbox-label,
.radio-label {
  display: flex;
  align-items: center;
  cursor: pointer;
  font-weight: 400;
}

/* Buttons */
button,
.btn,
input[type="submit"],
input[type="button"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 500;
  color: white;
  background: var(--primary);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition-base),
              transform var(--transition-fast),
              box-shadow var(--transition-base);
  min-height: 44px;
}

button:hover,
.btn:hover,
input[type="submit"]:hover,
input[type="button"]:hover {
  background: var(--primary-hover);
  box-shadow: var(--shadow-md);
}

button:active,
.btn:active,
input[type="submit"]:active,
input[type="button"]:active {
  transform: scale(0.95);
}

button:focus,
.btn:focus,
input[type="submit"]:focus,
input[type="button"]:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.btn-secondary {
  background: var(--accent);
}

.btn-secondary:hover {
  background: var(--accent-hover);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}

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

/* ==========================================================================
   Messages & Alerts
   ========================================================================== */

.message {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
  animation: slideInDown 0.3s ease;
}

.message-success {
  background: rgba(0, 200, 83, 0.1);
  color: var(--success);
  border: 1px solid var(--success);
}

.message-error {
  background: rgba(211, 47, 47, 0.1);
  color: var(--error);
  border: 1px solid var(--error);
}

@keyframes slideInDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================================================
   Audio Player
   ========================================================================== */

audio {
  width: 100%;
  height: 48px;
  border-radius: var(--radius-md);
  outline: none;
}

audio::-webkit-media-controls-panel {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

audio::-webkit-media-controls-play-button,
audio::-webkit-media-controls-mute-button {
  background-color: var(--primary);
  border-radius: var(--radius-full);
  width: 32px;
  height: 32px;
}

audio::-webkit-media-controls-current-time-display,
audio::-webkit-media-controls-time-remaining-display {
  color: var(--text-secondary);
  font-family: var(--font-family);
}

audio::-webkit-media-controls-timeline {
  background-color: var(--border);
  border-radius: var(--radius-full);
  margin: 0 var(--space-sm);
}

audio::-webkit-media-controls-volume-slider {
  background-color: var(--border);
  border-radius: var(--radius-full);
}

.audio-container {
  background: var(--surface);
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  margin: var(--space-lg) 0;
}

/* Track Navigation */
.track-nav {
  display: flex;
  justify-content: space-between;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.track-nav-btn {
  flex: 1;
  max-width: 250px;
  padding: var(--space-md) var(--space-lg);
  background: var(--surface);
  color: var(--primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
  min-height: 44px;
}

.track-nav-btn:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.track-nav-btn:active {
  transform: scale(0.95);
}

@media (max-width: 767px) {
  .track-nav {
    flex-direction: column;
  }
  
  .track-nav-btn {
    max-width: none;
  }
}

/* ==========================================================================
   Track & Album Cards
   ========================================================================== */

.track-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.track-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.track-item:hover {
  background: var(--surface-hover);
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}

.track-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  flex: 1;
}

.track-name {
  font-weight: 500;
  color: var(--text);
}

.track-meta {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.album-header {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
  padding: var(--space-xl);
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}

.album-title {
  font-size: var(--font-size-3xl);
  margin: 0;
}

.album-date {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

/* ==========================================================================
   Hymn Search
   ========================================================================== */

.hymn-search-form {
  background: var(--surface);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-xl);
  border: 1px solid var(--border);
}

.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.checkbox-group label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
}

.search-input-group {
  display: flex;
  gap: var(--space-sm);
}

.search-input-group input[type="text"] {
  flex: 1;
}

.hymn-results {
  margin-top: var(--space-xl);
}

.results-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

/* Side-by-side layout on wider screens */
@media (min-width: 1024px) {
  .results-container {
    flex-direction: row;
    align-items: flex-start;
    gap: var(--space-xl);
  }

  .results-list {
    flex: 1;
    min-width: 0;
  }

  .hymn-detail {
    flex: 0 0 400px;
    position: sticky;
    top: var(--space-md);
    max-height: calc(100vh - 2rem);
    overflow-y: auto;
  }
}

.hymn-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.hymn-table thead {
  background: var(--primary);
  color: white;
}

.hymn-table th,
.hymn-table td {
  padding: var(--space-md);
  text-align: left;
}

.hymn-table th a {
  color: white;
  text-decoration: none;
  font-weight: 500;
}

.hymn-table th a:hover {
  text-decoration: underline;
}

.hymn-table tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background-color var(--transition-base);
}

.hymn-table tbody tr:hover {
  background: var(--surface-hover);
}

.hymn-table mark {
  background: var(--accent);
  color: white;
  padding: 0.1em 0.3em;
  border-radius: var(--radius-sm);
}

.hymn-detail {
  padding: var(--space-xl);
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
}

.hymn-lyrics {
  white-space: pre-wrap;
  line-height: 1.8;
  margin-top: var(--space-md);
}

.hymn-lyrics mark {
  background: rgba(0, 168, 204, 0.2);
  padding: 2px 4px;
  border-radius: var(--radius-sm);
}

.hymn-result-item {
  display: grid;
  grid-template-columns: auto auto 1fr auto;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  align-items: start;
  transition: all var(--transition-base);
}

.hymn-result-item:hover {
  background: var(--surface-hover);
  box-shadow: var(--shadow-sm);
}
  border-radius: var(--radius-sm);
  font-weight: 500;
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */

.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.text-muted {
  color: var(--text-muted);
}

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

.text-large {
  font-size: var(--font-size-lg);
}

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--space-sm); }
.mt-2 { margin-top: var(--space-md); }
.mt-3 { margin-top: var(--space-lg); }
.mt-4 { margin-top: var(--space-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-sm); }
.mb-2 { margin-bottom: var(--space-md); }
.mb-3 { margin-bottom: var(--space-lg); }
.mb-4 { margin-bottom: var(--space-xl); }

.hidden {
  display: none;
}

/* Skip to content link for accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary);
  color: white;
  padding: var(--space-md);
  text-decoration: none;
  z-index: 1000;
}

.skip-link:focus {
  top: 0;
}

/* ==========================================================================
   Responsive Typography
   ========================================================================== */

@media (max-width: 767px) {
  :root {
    --font-size-4xl: 1.75rem;
    --font-size-3xl: 1.5rem;
    --font-size-2xl: 1.25rem;
    --font-size-xl: 1.125rem;
  }
  
  .container {
    padding: 0 var(--space-md);
  }
  
  main {
    padding: var(--space-lg) 0;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  :root {
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.625rem;
  }
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
  header,
  footer,
  .menu-icon,
  .track-nav,
  audio,
  button {
    display: none;
  }
  
  body {
    background: white;
    color: black;
  }
  
  a {
    text-decoration: underline;
  }
}