/* --- Typography System --- */
:root {
    /* Font Scale (1.25 ratio) */
    --font-size-xs: 0.8rem;
    --font-size-sm: 0.95rem; 
    --font-size-base: 1rem;
    --font-size-md: 1.25rem;
    --font-size-lg: 1.563rem;
    --font-size-xl: 1.953rem;
    --font-size-xxl: 2.441rem;
    
    /* Font Weights */
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Line Heights */
    --line-height-tight: 1.2;
    --line-height-base: 1.5;
    --line-height-loose: 1.8;
    
    /* Letter Spacing */
    --letter-spacing-tight: -0.025em;
    --letter-spacing-normal: 0;
    --letter-spacing-wide: 0.025em;
    
    /* Modern Default Theme */
    --primary-color: #007bff; /* Example: Bootstrap Blue */
    --secondary-color: #6c757d; /* Example: Bootstrap Gray */
    --accent-color: #17a2b8; /* Example: Bootstrap Teal Info */
    --light-bg: #f8f9fa; /* Light Gray for body background */
    --content-bg: #ffffff; /* White for containers, cards */
    --text-color-primary: #212529; /* Dark gray for primary text */
    --text-color-secondary: #495057; /* Lighter gray for secondary text */
    --border-color-light: #dee2e6; /* Light border for elements */
    --border-color-strong: #ced4da; /* Stronger border for inputs etc. */
    --shadow-color: rgba(0, 0, 0, 0.075); /* Softer shadow */
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;

    /* RGB Color Variables for animations */
    --primary-color-rgb: 0, 123, 255; /* Bootstrap blue in RGB */
    --accent-color-rgb: 23, 162, 184; /* Bootstrap teal in RGB */
    --success-color-rgb: 40, 167, 69;
    --danger-color-rgb: 220, 53, 69;
    --warning-color-rgb: 255, 193, 7;

    /* Theme specific overrides will go into separate blocks like .theme-dark */
    --body-bg: var(--light-bg);
    --container-bg: var(--content-bg);
    --text-color: var(--text-color-primary);
    --button-bg: var(--primary-color);
    --button-text-color: #ffffff;
    --button-hover-bg: #0056b3; /* Darker primary */
    --player-bg: var(--content-bg);
    --player-text: var(--text-color-primary);
    --border-color: var(--border-color-light);

    /* Grid Layout Variables */
    --grid-gap-sm: 10px;
    --grid-gap: 15px;
    --grid-gap-lg: 25px;
    
    /* Container Sizes */
    --container-padding: 20px;
    --container-max-width: 1200px;
    --container-sm-padding: 15px;
}

/* --- General Styles --- */
body {
    background-color: var(--body-bg);
    color: var(--text-color);
    font-family: 'Open Sans', sans-serif; /* Modern sans-serif font */
    transition: background-color 0.3s ease, color 0.3s ease;
    padding-bottom: 60px; /* Increased padding for footer/animation */
    margin: 0; /* Remove default margin */
    line-height: 1.6; /* Improved readability */
    overflow-x: hidden;
}
.container {
    background-color: var(--container-bg);
    padding: 0 var(--container-padding);
    border-radius: 12px; /* Slightly less rounded for modern feel */
    box-shadow: 0 4px 12px var(--shadow-color); /* Softer, more modern shadow */
    margin: 30px auto; /* Centered with more margin */
    max-width: var(--container-max-width); /* Max width for larger screens */
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}
h1, h2, h3, h4, h5, h6 {
    font-family: 'Montserrat', sans-serif; /* Modern sans-serif font for headings */
    color: var(--text-color-primary);
    transition: color 0.3s ease;
    margin-top: 0; /* Remove default top margin from headings */
    margin-bottom: 0.75rem; /* Consistent bottom margin */
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-tight);
    font-weight: var(--font-weight-semibold);
}
h1 { 
    font-size: var(--font-size-xxl); 
    margin-bottom: 1.5rem;
    font-weight: var(--font-weight-bold);
}
h2 {
    font-size: var(--font-size-xl);
    margin-bottom: 1.25rem;
}
h3 { 
    font-size: var(--font-size-lg); 
    margin-bottom: 1rem;
}


/* --- Player Styles --- */
.player {
    margin-top: 30px;
    margin-bottom: 30px;
    background: var(--player-bg);
    color: var(--player-text);
    padding: 20px; /* More padding */
    border-radius: 8px; /* Consistent with container */
    box-shadow: 0 2px 8px var(--shadow-color); /* Prominent shadow */
    border: 1px solid var(--border-color);
    transition: background-color 0.3s ease, color 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
 .player h3 {
    color: var(--player-text);
    margin-bottom: 15px;
    font-size: 1.25rem; /* Slightly smaller for player context */
 }
 audio {
     width: 100%;
     border-radius: 4px; /* Style the audio player itself if possible */
     margin-top: 10px;
 }

/* --- Custom Audio Player Styles --- */
.custom-player {
    border-radius: 8px;
    overflow: hidden;
    background: var(--player-bg);
    padding: 15px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.player-controls {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.control-btn {
    background: var(--button-bg);
    color: white;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.control-btn:hover {
    background: var(--button-hover-bg);
    transform: scale(1.05);
}

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

.volume-control {
    display: flex;
    align-items: center;
    gap: 10px;
}

.volume-slider-container {
    width: 80px;
    position: relative;
}

.volume-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 5px;
    border-radius: 5px;
    background: var(--border-color);
    outline: none;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: var(--button-bg);
    cursor: pointer;
    transition: all 0.2s ease;
}

.volume-slider::-webkit-slider-thumb:hover {
    background: var(--button-hover-bg);
    transform: scale(1.2);
}

.station-info {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-grow: 1;
    margin-left: 10px;
}

.station-logo {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--text-color);
}

.now-playing-text {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-medium);
    color: var(--text-color);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 200px;
}

.audio-visualization {
    width: 100%;
    height: 120px; /* Increased height for better visualization */
    background: rgba(0,0,0,0.9); /* Darker background */
    border-radius: 12px; /* More rounded */
    overflow: hidden;
    box-shadow: inset 0 0 20px rgba(0,0,0,0.7), 0 0 15px rgba(0,0,0,0.2); /* Enhanced shadows */
    margin-top: 20px;
    border: 1px solid rgba(255,255,255,0.1); /* Subtle border */
    position: relative;
    transition: all 0.3s ease;
}

.audio-visualization::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(255,255,255,0.3), transparent);
}

.audio-visualization::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 10%;
    right: 10%;
    height: 20px;
    background: radial-gradient(ellipse at center, rgba(255,255,255,0.2) 0%, transparent 70%);
    filter: blur(5px);
    border-radius: 50%;
}

#audioVisualization {
    width: 100%;
    height: 100%;
    display: block;
}

/* --- Search Input Styles --- */
.search-input {
    width: 100%; /* Full width */
    margin-bottom: 20px;
    padding: 0.75rem 1rem; /* Larger padding */
    font-size: 1rem;
    color: var(--text-color-primary);
    background-color: var(--content-bg); /* Consistent background */
    border: 1px solid var(--border-color-strong);
    border-radius: 6px; /* Softer radius */
    box-shadow: inset 0 1px 2px rgba(0,0,0,0.05);
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.2s ease;
}
.search-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(var(--primary-color-rgb, 0, 123, 255), 0.25); /* Focus ring */
    outline: none;
}
.search-input::placeholder {
    color: var(--text-color-secondary);
    opacity: 1; /* Standard opacity */
}

/* --- Enhanced Search & Filter Styles --- */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.section-header.with-actions {
    margin-bottom: 25px;
}

.section-header h2 {
    margin-bottom: 0;
}

.filter-controls {
    display: flex;
    gap: 10px;
}

.search-container {
    position: relative;
    margin: 25px 0;
    max-width: 600px;
    width: 100%;
}

.search-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.search-input-wrapper:hover,
.search-input-wrapper:focus-within {
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    transform: translateY(-1px);
}

.search-icon {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-color-secondary);
    z-index: 2;
    font-size: 16px;
}

.search-input {
    padding: 12px 15px 12px 45px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    font-size: var(--font-size-base);
    width: 100%;
    transition: all 0.3s ease;
    margin-bottom: 0; /* Override previous margin */
}

.search-input:focus {
    border-color: var(--button-bg);
    outline: none;
}

.clear-search-btn {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0.6;
    transition: all 0.2s ease;
}

.clear-search-btn:hover {
    opacity: 1;
    background-color: rgba(0,0,0,0.05);
}

.station-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 15px;
}

.filter-group, .sort-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.filter-label {
    margin-bottom: 0;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-color-secondary);
}

.filter-select {
    padding: 6px 35px 6px 12px;
    font-size: var(--font-size-sm);
    border-radius: 6px;
    border: 1px solid var(--border-color-strong);
    background-color: var(--content-bg);
    color: var(--text-color);
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.5rem center;
    background-size: 16px 12px;
    cursor: pointer;
}

/* --- Card Styles (General for Country/Station) --- */
.card {
    background-color: var(--content-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 15px;
    box-shadow: 0 2px 5px var(--shadow-color);
    transition: transform 0.2s ease-out, box-shadow 0.2s ease-out;
    display: flex;
    flex-direction: column;
    justify-content: space-between; /* For content alignment */
}
.card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

/* --- Enhanced Country Item Styles */
.country-item {
    cursor: pointer;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.country-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--primary-color);
    opacity: 0;
    z-index: 1;
    transition: opacity 0.3s ease;
}

.country-item:hover::before {
    opacity: 0.05;
}

.country-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px rgba(0,0,0,0.1);
}

.country-item img.flag {
    width: 60px;
    height: 40px;
    object-fit: cover;
    transition: all 0.3s ease;
    box-shadow: 0 3px 6px rgba(0,0,0,0.1);
    border: 2px solid rgba(255,255,255,0.8);
}

.country-item:hover img.flag {
    transform: scale(1.1);
}

/* --- Country Grid Styles (Card-based) --- */
.country-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); /* Slightly larger cards */
    gap: var(--grid-gap); /* Increased gap */
    padding: 20px 0;
}

.country-item { /* Adapting to card style */
    cursor: pointer;
    text-align: center;
    color: var(--text-color-primary);
    font-size: 0.9em;
    /* Inherits from .card: background, border, radius, shadow, transition */
    /* Specific overrides for country item content */
    padding: 15px 10px; /* Adjusted padding */
    height: 130px; /* Fixed height for consistency */
}
.country-item:hover { /* Hover effect from .card is fine, can add specific color changes */
    border-color: var(--primary-color);
}
.country-item img.flag {
     width: 48px; /* Larger flag */
     height: auto; /* Maintain aspect ratio */
     margin-bottom: 10px;
     border-radius: 3px; /* Slight rounding for flag image */
     box-shadow: 0 1px 2px rgba(0,0,0,0.1);
 }
.country-item .country-name {
     display: block;
     width: 100%;
     overflow: hidden;
     white-space: normal; /* Allow wrapping for longer names if needed */
     text-overflow: ellipsis; /* Still use ellipsis if it overflows after wrapping (max 2 lines) */
     display: -webkit-box;
     -webkit-line-clamp: 2; /* Limit to 2 lines */
     line-clamp: 2; /* Standard property for compatibility */
     -webkit-box-orient: vertical;
     line-height: 1.3; /* Adjust line height for name */
     flex-grow: 0; /* Don't let it grow excessively */
     min-height: 2.6em; /* Reserve space for two lines */
 }


/* --- Station List Styles (Card-based) --- */
.station-list {
    margin-top: 20px;
    display: grid; /* Using grid for station list as well for consistency */
    grid-template-columns: 1fr; /* Single column for now, can be responsive */
    gap: 15px;
}
.station-item { /* Adapting to card style */
    cursor: pointer;
    color: var(--text-color-primary);
    /* Inherits from .card: background, border, radius, shadow, transition */
    /* Specific overrides for station item content */
    padding: 15px;
    display: flex; /* For better alignment of content within station item */
    align-items: center;
    justify-content: space-between; /* Example: name on left, play icon on right */
}
.station-item:hover {
    border-color: var(--accent-color);
    background-color: #f8f9fa; /* Slight bg change on hover */
}
.station-item .station-name { /* Assuming a span or div for the name */
    font-weight: 500; /* Medium weight for station name */
}
/* Add styles for play icon or other elements if they exist in HTML */


/* --- Enhanced Station Item Styles */
.station-item {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 15px;
    padding: 15px;
    transition: all 0.3s ease;
    position: relative;
}

.station-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(var(--primary-color-rgb, 0, 123, 255), 0.1);
    border-radius: 50%;
    font-size: 18px;
    color: var(--primary-color);
}

.station-info {
    overflow: hidden;
}

.station-name {
    font-weight: var(--font-weight-medium);
    margin-bottom: 3px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.station-meta {
    display: flex;
    font-size: var(--font-size-xs);
    color: var(--text-color-secondary);
    gap: 10px;
}

.station-genre, .station-language {
    display: flex;
    align-items: center;
    gap: 4px;
}

.station-actions {
    display: flex;
    gap: 8px;
}

.action-btn {
    background: transparent;
    border: none;
    color: var(--text-color-secondary);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    cursor: pointer;
}

.action-btn:hover {
    background-color: rgba(0,0,0,0.05);
    color: var(--primary-color);
}

.favorite-btn.active {
    color: #e91e63;
}

.play-btn {
    background-color: var(--button-bg);
    color: white;
}

.play-btn:hover {
    background-color: var(--button-hover-bg);
    color: white;
    transform: scale(1.1);
}

/* --- Button Styles (General) --- */
.btn {
    display: inline-block;
    font-weight: 400;
    color: var(--button-text-color);
    text-align: center;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    background-color: var(--button-bg);
    border: 1px solid var(--button-bg);
    padding: 0.5rem 1rem; /* Adjusted padding */
    font-size: 0.95rem;
    line-height: 1.5;
    border-radius: 6px; /* Consistent radius */
    transition: color .15s ease-in-out,background-color .15s ease-in-out,border-color .15s ease-in-out,box-shadow .15s ease-in-out;
}
.btn:hover {
    color: var(--button-text-color);
    background-color: var(--button-hover-bg);
    border-color: var(--button-hover-bg);
}
.btn-secondary {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}
.btn-secondary:hover {
    background-color: #545b62; /* Darker secondary */
    border-color: #4e555b;
}

/* --- Back Button --- */
#backToCountries { /* Apply .btn and .btn-secondary styles */
     margin-top: 20px;
}


/* --- Footer Styles --- */
.app-footer {
    margin-top: 50px;
    padding: 40px 0;
    border-top: 1px solid var(--border-color);
    background-color: var(--container-bg);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 30px;
}

.footer-branding {
    display: flex;
    align-items: center;
    gap: 20px;
}

.footer-logo {
    width: 80px;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 3px 8px rgba(0,0,0,0.1);
}

.footer-info {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.footer-tagline {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--text-color-secondary);
    font-style: italic;
}

.copyright {
    margin: 0;
    font-size: var(--font-size-xs);
    color: var(--text-color-secondary);
}

.footer-links {
    display: flex;
    gap: 40px;
}

.footer-link-group h4 {
    font-size: var(--font-size-md);
    margin-bottom: 15px;
    color: var(--text-color);
}

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

.footer-link-group ul li {
    margin-bottom: 10px;
}

.footer-link-group ul li a {
    color: var(--text-color-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
    font-size: var(--font-size-sm);
}

.footer-link-group ul li a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.social-icons {
    display: flex;
    gap: 15px;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--button-bg);
    color: white;
    font-size: var(--font-size-md);
    transition: all 0.3s ease;
}

.social-icon:hover {
    transform: translateY(-3px);
    background-color: var(--button-hover-bg);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
    }
    
    .footer-links {
        width: 100%;
        justify-content: space-between;
    }
}

/* --- Theme Selector Styles (Subtle Integration) --- */
.header-controls { /* Assuming a container for theme selector and other header items */
    display: flex;
    justify-content: flex-end; /* Align to the right */
    align-items: center;
    padding: 10px 0; /* Padding for the controls area */
    margin-bottom: 15px;
}
#themeSelectorLabel {
    color: var(--text-color-secondary);
    transition: color 0.3s ease;
    margin-right: 8px;
    font-size: 0.9rem;
}
#themeSelector {
     display: inline-block;
     width: auto;
     vertical-align: middle;
     border-radius: 6px;
     font-size: 0.9rem;
     padding: 0.375rem 0.75rem; /* Standard padding */
     background-color: var(--content-bg);
     color: var(--text-color-primary);
     border: 1px solid var(--border-color-strong);
     transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.2s ease;
     -webkit-appearance: none;
     -moz-appearance: none;
     appearance: none;
     background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e"); /* Basic SVG arrow */
     background-repeat: no-repeat;
     background-position: right 0.5rem center;
     background-size: 16px 12px;
     padding-right: 2rem; /* Space for arrow */
 }
#themeSelector:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(var(--primary-color-rgb, 0, 123, 255), 0.25);
    outline: none;
}
#themeSelector::-ms-expand {
     display: none;
}


/* --- Bottom Animation Area --- */
.animation-area {
    width: 100%;
    height: 50px; /* Slightly taller */
    margin-top: 30px; /* More space above */
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6px; /* Adjusted gap */
    position: fixed; /* Consider fixing to bottom if desired, or relative */
    bottom: 0;
    left: 0;
    background-color: var(--light-bg); /* Give it a background if fixed */
    padding: 5px 0;
    box-shadow: 0 -2px 5px var(--shadow-color); /* Shadow if fixed */
    z-index: 100; /* Ensure it's above other content if fixed */
}

.animation-bar {
    width: 6px;
    height: 6px;
    background-color: var(--accent-color); /* Use accent color */
    border-radius: 3px;
    animation: equalizer 1.2s ease-in-out infinite alternate;
    transition: background-color 0.3s ease;
}

/* Delay animation for each bar */
.animation-bar:nth-child(1) { animation-delay: 0.1s; }
.animation-bar:nth-child(2) { animation-delay: 0.2s; }
.animation-bar:nth-child(3) { animation-delay: 0.3s; }
.animation-bar:nth-child(4) { animation-delay: 0.4s; }
.animation-bar:nth-child(5) { animation-delay: 0.5s; }
.animation-bar:nth-child(6) { animation-delay: 0.4s; }
.animation-bar:nth-child(7) { animation-delay: 0.3s; }
.animation-bar:nth-child(8) { animation-delay: 0.2s; }
.animation-bar:nth-child(9) { animation-delay: 0.1s; }


/* Keyframes for the equalizer animation */
@keyframes equalizer {
    0% { height: 6px; opacity: 0.5; }
    100% { height: 40px; opacity: 1; } /* Max height */
}

/* --- Enhanced Animation Area --- */
.animation-area {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 30px;
    background-color: rgba(0,0,0,0.05);
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 5;
    overflow: hidden;
}

.animation-bar {
    width: 3px;
    background-color: var(--primary-color);
    margin: 0 3px;
    border-radius: 3px;
    animation: sound 0s ease infinite alternate;
}

.animation-bar:nth-child(1) { animation-duration: 1.2s; }
.animation-bar:nth-child(2) { animation-duration: 0.8s; }
.animation-bar:nth-child(3) { animation-duration: 0.6s; }
.animation-bar:nth-child(4) { animation-duration: 1s; }
.animation-bar:nth-child(5) { animation-duration: 0.7s; }
.animation-bar:nth-child(6) { animation-duration: 1.3s; }
.animation-bar:nth-child(7) { animation-duration: 0.5s; }
.animation-bar:nth-child(8) { animation-duration: 0.9s; }
.animation-bar:nth-child(9) { animation-duration: 1.1s; }

@keyframes sound {
    0% {
        height: 3px;
        opacity: 0.3;
    }
    100% {
        height: 22px;
        opacity: 0.8;
    }
}

/* Enhance animation based on player state */
.is-playing .animation-bar {
    animation-play-state: running;
}

.is-paused .animation-bar {
    animation-play-state: paused;
    height: 3px;
    opacity: 0.3;
}

/* --- Animation & Micro-interaction Styles --- */
.loader {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 30px 0;
}

.loader-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Card Hover Effects */
.card, .btn, .action-btn {
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Enhanced hover state for buttons */
.btn:hover, .action-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.12);
}

.btn:active, .action-btn:active {
    transform: translateY(1px);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* Enhanced hover for station items */
.station-item {
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    position: relative;
    overflow: hidden;
}

.station-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.station-item:hover::after {
    width: 100%;
}

/* Now Playing Pulse Animation */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.station-item.now-playing {
    border-color: var(--primary-color);
    background-color: rgba(var(--primary-color-rgb, 0, 123, 255), 0.05);
}

.station-item.now-playing .station-icon {
    animation: pulse 2s infinite;
    background-color: rgba(var(--primary-color-rgb, 0, 123, 255), 0.2);
}

/* Page Transitions */
.section-transition {
    animation: fadeSlideIn 0.5s ease forwards;
    opacity: 0;
    transform: translateY(20px);
}

@keyframes fadeSlideIn {
    0% { opacity: 0; transform: translateY(20px); }
    100% { opacity: 1; transform: translateY(0); }
}

.staggered-item {
    opacity: 0;
    transform: translateY(20px);
}

/* Custom Select Animation */
.custom-theme-select {
    position: relative;
    width: 200px;
    user-select: none;
    margin-left: auto;
}

.selected-theme {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    border: 1px solid var(--border-color-strong);
    border-radius: 6px;
    cursor: pointer;
    background-color: var(--content-bg);
    transition: all 0.3s ease;
}

.selected-theme:hover {
    border-color: var(--primary-color);
}

.theme-options {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 10;
    display: none;
    max-height: 250px;
    overflow-y: auto;
    background-color: var(--content-bg);
    border: 1px solid var(--border-color-strong);
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    margin-top: 5px;
}

.theme-option {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.theme-option:hover {
    background-color: rgba(0,0,0,0.05);
}

.theme-preview {
    width: 16px;
    height: 16px;
    border-radius: 3px;
    margin-right: 8px;
    border: 1px solid;
}

/* --- Enhanced Responsive Layout --- */
body {
    overflow-x: hidden;
}

.container {
    max-width: var(--container-max-width);
    padding: 0 var(--container-padding);
    margin: 0 auto;
    width: 100%;
    box-sizing: border-box;
}

.main-content {
    padding-top: 30px;
    padding-bottom: 50px;
}

/* Grid System for Different Screen Sizes */
.country-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: var(--grid-gap);
    margin-bottom: 20px;
}

/* Fluid Typography */
@media (max-width: 768px) {
    :root {
        --font-size-base: 0.95rem;
        --font-size-md: 1.15rem;
        --font-size-lg: 1.35rem;
        --font-size-xl: 1.6rem;
        --font-size-xxl: 1.9rem;
        --container-padding: var(--container-sm-padding);
    }
    
    .container {
        padding: 0 var(--container-sm-padding);
    }
    
    .country-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
        gap: var(--grid-gap-sm);
    }
    
    .favorites-list {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .section-header.with-actions {
        flex-direction: row;
        flex-wrap: wrap;
    }
    
    .station-filters {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .custom-player {
        padding: 10px;
    }
    
    .player-controls {
        flex-wrap: wrap;
    }
    
    .now-playing-text {
        max-width: 150px;
    }
}

@media (max-width: 576px) {
    .country-grid {
        grid-template-columns: repeat(auto-fill, minmax(85px, 1fr));
        gap: 8px;
    }
    
    .country-item .country-name {
        font-size: var(--font-size-xs);
    }
    
    .country-item img.flag {
        width: 50px;
        height: 33px;
    }
    
    .station-item {
        grid-template-columns: auto 1fr;
        padding: 10px;
    }
    
    .station-actions {
        grid-column: 1 / -1;
        justify-content: flex-end;
        margin-top: 8px;
    }
    
    .station-info {
        grid-column: 2;
    }
    
    .favorites-list {
        grid-template-columns: 1fr;
    }
}

/* Layout Improvements for larger screens */
@media (min-width: 992px) {
    .main-content {
        padding-top: 40px;
        padding-bottom: 60px;
    }
    
    .country-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: var(--grid-gap-lg);
    }
    
    .station-list {
        max-height: 600px;
        overflow-y: auto;
        padding-right: 5px;
    }
    
    .player-section {
        position: sticky;
        bottom: 20px;
        z-index: 10;
    }
}

/* --- Utility Classes --- */
.visually-hidden {
  position: absolute !important;
  height: 1px; width: 1px;
  overflow: hidden;
  clip: rect(1px, 1px, 1px, 1px);
  white-space: nowrap; /* added line */
}

/* Add Montserrat and Open Sans to font imports if not already linked in HTML */
/* @import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500;700&family=Open+Sans:wght@400;600&display=swap'); */
/* It's better to link fonts in the HTML <head> for performance. */

/* --- Header & App Container Styles --- */
.app-header {
    padding: 25px 0;
    margin-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.logo-container {
    display: flex;
    flex-direction: column;
}

.app-logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
}

.app-title {
    margin: 0;
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-color);
}

.app-tagline {
    margin: 5px 0 0;
    font-size: var(--font-size-sm);
    color: var(--text-color-secondary);
    font-weight: var(--font-weight-light);
}

.header-actions {
    display: flex;
    gap: 15px;
    align-items: center;
}

.theme-selector-container {
    display: flex;
    align-items: center;
    gap: 10px;
}

.theme-label {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--text-color-secondary);
    display: flex;
    align-items: center;
    gap: 5px;
}

#themeSelector {
    padding: 8px 35px 8px 12px;
    font-size: var(--font-size-sm);
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background-color: var(--container-bg);
    color: var(--text-color);
    appearance: none;
    cursor: pointer;
    transition: all 0.3s ease;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.5rem center;
    background-size: 16px 12px;
}

#themeSelector:focus {
    border-color: var(--button-bg);
    outline: none;
    box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb, 0, 123, 255), 0.2);
}

/* Hide the original select element */
#themeSelector {
    display: none !important;
}

/* --- Modern Theme Selector with Icons --- */
.modern-theme-selector {
    position: relative;
    z-index: 100;
    font-family: 'Montserrat', sans-serif;
}

.theme-selector-trigger {
    cursor: pointer;
    user-select: none;
    min-width: 280px;
}

.selected-theme-preview {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    background-color: var(--container-bg);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    position: relative;
    overflow: hidden;
}

.selected-theme-preview::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.1), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.selected-theme-preview:hover {
    border-color: var(--button-bg);
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
    transform: translateY(-2px);
}

.selected-theme-preview:hover::before {
    opacity: 1;
}

.theme-icon {
    font-size: 20px;
    color: var(--button-bg);
    margin-right: 12px;
    width: 24px;
    text-align: center;
    transition: all 0.3s ease;
}

.theme-info {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.theme-name {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
    color: var(--text-color);
    line-height: 1.2;
    margin-bottom: 2px;
}

.theme-description {
    font-size: var(--font-size-xs);
    color: var(--text-color-secondary);
    font-weight: var(--font-weight-regular);
    line-height: 1.3;
}

.dropdown-arrow {
    font-size: 14px;
    color: var(--text-color-secondary);
    transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    margin-left: 8px;
}

.dropdown-arrow.rotated {
    transform: rotate(180deg);
}

.theme-selector-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background-color: var(--container-bg);
    border: 2px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.15);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px) scale(0.95);
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    backdrop-filter: blur(20px);
    max-height: 400px;
    overflow: hidden;
}

.theme-selector-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.theme-options-container {
    max-height: 380px;
    overflow-y: auto;
    padding: 8px;
}

.theme-options-container::-webkit-scrollbar {
    width: 6px;
}

.theme-options-container::-webkit-scrollbar-track {
    background: rgba(0,0,0,0.1);
    border-radius: 3px;
}

.theme-options-container::-webkit-scrollbar-thumb {
    background: var(--button-bg);
    border-radius: 3px;
}

.theme-options-container::-webkit-scrollbar-thumb:hover {
    background: var(--button-hover-bg);
}

.theme-option {
    display: flex;
    align-items: center;
    padding: 12px;
    margin: 4px 0;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    position: relative;
    overflow: hidden;
}

.theme-option::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.5s ease;
}

.theme-option:hover {
    background-color: rgba(0,0,0,0.05);
    transform: translateX(4px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.theme-option:hover::before {
    left: 100%;
}

.theme-option.active {
    background-color: rgba(var(--primary-color-rgb, 0, 123, 255), 0.1);
    border: 2px solid var(--button-bg);
    transform: scale(1.02);
}

.theme-preview-box {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 12px;
    box-shadow: 0 3px 8px rgba(0,0,0,0.2);
    border: 2px solid rgba(255,255,255,0.3);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.theme-preview-box::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.3), transparent);
    transform: rotate(45deg);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.theme-option:hover .theme-preview-box {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 6px 16px rgba(0,0,0,0.3);
}

.theme-option:hover .theme-preview-box::after {
    opacity: 1;
}

.theme-option-icon {
    font-size: 20px;
    z-index: 1;
    position: relative;
    transition: all 0.3s ease;
}

.theme-option:hover .theme-option-icon {
    transform: scale(1.1);
}

.theme-details {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.theme-option-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--text-color);
    line-height: 1.2;
    margin-bottom: 2px;
}

.theme-option-description {
    font-size: var(--font-size-xs);
    color: var(--text-color-secondary);
    font-weight: var(--font-weight-regular);
    line-height: 1.3;
}

.theme-colors {
    display: flex;
    gap: 6px;
    margin-left: 12px;
}

.color-swatch {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 2px solid rgba(255,255,255,0.8);
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
    transition: all 0.3s ease;
}

.theme-option:hover .color-swatch {
    transform: scale(1.2);
    border-color: rgba(255,255,255,1);
}

/* Responsive adjustments for mobile */
@media (max-width: 768px) {
    .theme-selector-trigger {
        min-width: 250px;
    }
    
    .selected-theme-preview {
        padding: 10px 12px;
    }
    
    .theme-option {
        padding: 10px;
    }
    
    .theme-preview-box {
        width: 40px;
        height: 40px;
    }
    
    .theme-option-icon {
        font-size: 16px;
    }
    
    .theme-colors {
        display: none; /* Hide color swatches on mobile for space */
    }
}

/* Animation for theme transitions */
* {
    transition: background-color 0.4s cubic-bezier(0.25, 0.8, 0.25, 1),
                color 0.4s cubic-bezier(0.25, 0.8, 0.25, 1),
                border-color 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* --- Modern Station Grid & Cards --- */
.station-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 20px;
    margin-bottom: 30px;
}

.station-card {
    background-color: var(--container-bg);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    border: 1px solid var(--border-color);
}

.station-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.15);
}

.station-card-header {
    display: flex;
    align-items: center;
    padding: 12px;
    position: relative;
    z-index: 1;
}

.station-icon {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary-color);
    color: white;
    font-size: 20px;
    margin-right: 15px;
    flex-shrink: 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    border: 1px solid rgba(255,255,255,0.2);
}

.station-title-area {
    flex: 1;
    overflow: hidden;
}

.station-name {
    margin: 0;
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-md);
    color: var(--text-color);
    line-height: 1.3;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.station-frequency {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--text-color-secondary);
    margin-top: 4px;
    font-weight: var(--font-weight-semibold);
}

.station-card-body {
    padding: 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: rgba(0,0,0,0.02);
    border-top: 1px solid var(--border-color);
}

.station-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    font-size: var(--font-size-xs);
    color: var(--text-color-secondary);
}

.station-genre, 
.station-language {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px;
    border-radius: 12px;
    background-color: rgba(0,0,0,0.05);
}

.play-station-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--button-bg);
    color: white;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.play-station-btn:hover {
    background-color: var(--button-hover-bg);
    transform: scale(1.1);
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
}

.station-action {
    display: flex;
    align-items: center;
}

@media (max-width: 768px) {
    .station-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 15px;
    }
}

@media (max-width: 576px) {
    .station-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
}

/* Visually indicate now playing station */
.station-card.now-playing {
    border: 2px solid var(--primary-color);
    box-shadow: 0 0 0 2px rgba(var(--primary-color-rgb, 0, 123, 255), 0.3);
}

.station-card.now-playing .station-icon {
    animation: pulse 1.5s infinite;
}

/* Animation for the now playing indicator */
@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(var(--primary-color-rgb, 0, 123, 255), 0.6);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(var(--primary-color-rgb, 0, 123, 255), 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(var(--primary-color-rgb, 0, 123, 255), 0);
    }
}

/* --- Station List Scrollbar Styles --- */
.station-list {
    max-height: calc(100vh - 300px);
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--button-bg) var(--container-bg);
}

.station-list::-webkit-scrollbar {
    width: 8px;
}

.station-list::-webkit-scrollbar-track {
    background: var(--container-bg);
    border-radius: 4px;
}

.station-list::-webkit-scrollbar-thumb {
    background-color: var(--button-bg);
    border-radius: 4px;
    border: 2px solid var(--container-bg);
}

.station-list::-webkit-scrollbar-thumb:hover {
    background-color: var(--button-hover-bg);
}

/* Ensure the station grid has proper spacing */
.station-grid {
    padding-right: 12px;
}

/* --- Station Navigation Pane Styles --- */
#station-list {
    background-color: var(--container-bg);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    margin-top: 20px;
}

.section-header {
    color: var(--text-color);
}

.section-header h2 {
    color: var(--text-color);
    font-size: var(--font-size-xl);
    margin-bottom: 1rem;
}

/* Style the back button to match theme */
#backToCountries {
    background-color: var(--button-bg);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
}

#backToCountries:hover {
    background-color: var(--button-hover-bg);
    transform: translateY(-2px);
}

/* Style the refresh button */
#refreshStations {
    background-color: var(--container-bg);
    color: var(--text-color);
    border: 2px solid var(--button-bg);
    padding: 8px 16px;
    border-radius: 6px;
    transition: all 0.3s ease;
}

#refreshStations:hover {
    background-color: var(--button-bg);
    color: white;
}