/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Dark theme colors */
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --text-muted: #888888;
    --accent-primary: #ffd700;
    --accent-secondary: #ff6b35;
    --border-color: #333333;
    --hover-bg: #333333;
    --today-highlight: #ffd700;
    --moon-glow: rgba(255, 215, 0, 0.3);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Typography */
    --font-size-xs: 0.75rem;
    --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: 2rem;
    
    /* Border radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.2);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Navigation */
.navbar {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.navbar-brand {
    font-size: var(--font-size-xl);
    font-weight: bold;
    color: var(--accent-primary);
    text-decoration: none;
    white-space: nowrap;
}

.navbar-toggler {
    display: none;
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    cursor: pointer;
    min-width: 44px;
    min-height: 44px;
}

.navbar-toggler-icon {
    display: block;
    width: 20px;
    height: 2px;
    background-color: var(--text-primary);
    position: relative;
}

.navbar-toggler-icon::before,
.navbar-toggler-icon::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    transition: all 0.3s ease;
}

.navbar-toggler-icon::before {
    top: -6px;
}

.navbar-toggler-icon::after {
    top: 6px;
}

.navbar-collapse {
    display: flex;
    width: auto;
}

.navbar-nav {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
    margin: 0;
    padding: 0;
    align-items: center;
    flex-wrap: wrap;
}

.nav-item {
    position: relative;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
    display: block;
    white-space: nowrap;
    min-height: 44px;
    display: flex;
    align-items: center;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
    background-color: var(--hover-bg);
}

.dropdown {
    position: relative;
}

.dropdown-toggle::after {
    content: ' ▼';
    font-size: 0.8em;
    margin-left: 0.5em;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    z-index: 1000;
    display: none;
    list-style: none;
    margin: 0;
    padding: var(--spacing-sm) 0;
}

.dropdown:hover .dropdown-menu {
    display: block;
}

.dropdown-item {
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    display: block;
    transition: all 0.3s ease;
}

.dropdown-item:hover {
    color: var(--text-primary);
    background-color: var(--hover-bg);
}

.dropdown-divider {
    height: 1px;
    background-color: var(--border-color);
    margin: var(--spacing-sm) 0;
    border: none;
}

/* Main Content */
.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
}

/* Hero Section */
.hero-section {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}

.hero-section h1 {
    font-size: var(--font-size-3xl);
    color: var(--accent-primary);
    margin-bottom: var(--spacing-md);
    text-shadow: 0 0 20px var(--moon-glow);
}

.hero-section p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Calendar Settings */
.calendar-settings {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    border: 1px solid var(--border-color);
}

.calendar-settings h2 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-2xl);
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.setting-item label {
    display: block;
    color: var(--accent-primary);
    font-weight: bold;
    margin-bottom: var(--spacing-sm);
}

.setting-item select {
    width: 100%;
    padding: var(--spacing-md);
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
}

.setting-item small {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    display: block;
    margin-top: var(--spacing-xs);
}

.data-source-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* Calendar Navigation */
.calendar-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.nav-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-btn {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: var(--font-size-base);
    transition: all 0.3s ease;
    min-width: 48px;
    min-height: 48px;
}

.nav-btn:hover {
    background-color: var(--hover-bg);
    transform: translateY(-2px);
}

#current-month {
    font-size: var(--font-size-xl);
    color: var(--accent-primary);
    min-width: 200px;
    text-align: center;
}

.today-btn {
    background-color: var(--accent-primary);
    color: var(--bg-primary);
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: bold;
    font-size: var(--font-size-base);
    transition: all 0.3s ease;
    min-width: 48px;
    min-height: 48px;
}

.today-btn:hover {
    background-color: var(--accent-secondary);
    transform: translateY(-2px);
}

/* Calendar Grid */
.calendar-container {
    margin-bottom: var(--spacing-xl);
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 2px;
    background-color: var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.calendar-header {
    background-color: var(--bg-secondary);
    padding: var(--spacing-md);
    text-align: center;
    font-weight: bold;
    color: var(--accent-primary);
    font-size: var(--font-size-sm);
}

.calendar-day {
    background-color: var(--bg-secondary);
    padding: var(--spacing-md);
    min-height: 120px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.calendar-day:hover {
    background-color: var(--hover-bg);
    transform: scale(1.02);
}

.calendar-day.today {
    background-color: var(--today-highlight);
    color: var(--bg-primary);
    font-weight: bold;
    box-shadow: 0 0 20px var(--moon-glow);
}

.calendar-day.selected {
    background-color: var(--accent-secondary);
    color: var(--text-primary);
}

.calendar-day.other-month {
    opacity: 0.3;
}

.day-number {
    font-size: var(--font-size-lg);
    font-weight: bold;
    margin-bottom: var(--spacing-xs);
}

.moon-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
    filter: drop-shadow(0 0 10px var(--moon-glow));
}

.illumination-percent {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    font-weight: normal;
}

.calendar-day.today .illumination-percent {
    color: var(--bg-primary);
}

/* Today's Moon Panel */
.today-moon-panel {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    border: 1px solid var(--border-color);
    text-align: center;
}

.today-moon-panel h3 {
    color: var(--accent-primary);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-2xl);
}

.moon-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

.moon-icon-large {
    font-size: 4rem;
    filter: drop-shadow(0 0 20px var(--moon-glow));
}

.moon-info {
    text-align: left;
}

.illumination {
    font-size: var(--font-size-3xl);
    font-weight: bold;
    color: var(--accent-primary);
    margin-bottom: var(--spacing-sm);
}

.phase-name {
    font-size: var(--font-size-xl);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.phase-description {
    color: var(--text-secondary);
    font-size: var(--font-size-base);
}

/* Moon Details */
.moon-details {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    border: 1px solid var(--border-color);
}

.moon-details h3 {
    color: var(--accent-primary);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-2xl);
}

.details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.detail-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.detail-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.detail-value {
    color: var(--text-primary);
    font-weight: bold;
}

/* Moon Legend */
.moon-legend {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    border: 1px solid var(--border-color);
}

.moon-legend h3 {
    color: var(--accent-primary);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-2xl);
}

.legend-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.legend-icon {
    font-size: 1.5rem;
    filter: drop-shadow(0 0 5px var(--moon-glow));
}

.legend-text {
    color: var(--text-primary);
}

/* Educational Content */
.educational-content {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    border: 1px solid var(--border-color);
}

.educational-content h3 {
    color: var(--accent-primary);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-2xl);
}

.content-section {
    margin-bottom: var(--spacing-xl);
}

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

.content-section h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-lg);
}

.content-section p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.content-section ul {
    list-style: none;
    padding-left: 0;
}

.content-section li {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-lg);
    position: relative;
}

.content-section li::before {
    content: "🌙";
    position: absolute;
    left: 0;
    top: 0;
}

/* FAQ Section */
.faq-section {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    border: 1px solid var(--border-color);
}

.faq-section h3 {
    color: var(--accent-primary);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-2xl);
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar-toggler {
        display: block;
    }
    
    .navbar-collapse {
        display: none;
        width: 100%;
        margin-top: var(--spacing-md);
    }
    
    .navbar-collapse.show {
        display: block;
    }
    
    .navbar-nav {
        flex-direction: column;
        gap: var(--spacing-sm);
        width: 100%;
    }
    
    .nav-item {
        width: 100%;
    }
    
    .nav-link {
        padding: var(--spacing-md);
        border-radius: var(--radius-md);
        background-color: var(--bg-tertiary);
        margin-bottom: var(--spacing-xs);
    }
    
    .dropdown-menu {
        position: static;
        display: block;
        box-shadow: none;
        border: none;
        background-color: var(--bg-primary);
        margin-left: var(--spacing-md);
    }
    
    .main-content {
        padding: var(--spacing-lg) var(--spacing-sm);
    }
    
    .hero-section h1 {
        font-size: var(--font-size-2xl);
    }
    
    .calendar-navigation {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-md);
    }
    
    .nav-controls {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    #current-month {
        min-width: auto;
        font-size: var(--font-size-lg);
        margin: 0 var(--spacing-md);
    }
    
    .calendar-day {
        min-height: 80px;
        padding: var(--spacing-sm);
    }
    
    .moon-icon {
        font-size: 1.5rem;
    }
    
    .moon-display {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .moon-info {
        text-align: center;
    }
    
    .details-grid {
        grid-template-columns: 1fr;
    }
    
    .legend-grid {
        grid-template-columns: 1fr;
    }
    
    .settings-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .navbar-brand {
        font-size: var(--font-size-lg);
    }
    
    .calendar-grid {
        gap: 1px;
    }
    
    .calendar-day {
        min-height: 60px;
        padding: var(--spacing-xs);
    }
    
    .day-number {
        font-size: var(--font-size-base);
    }
    
    .moon-icon {
        font-size: 1.2rem;
    }
    
    .illumination-percent {
        font-size: 0.6rem;
    }
    
    .moon-icon-large {
        font-size: 3rem;
    }
    
    .nav-controls {
        gap: var(--spacing-sm);
    }
    
    .nav-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
    
    .today-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
    
    #current-month {
        font-size: var(--font-size-base);
    }
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.loading::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--border-color);
    border-top: 2px solid var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Animations */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.slide-in {
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for keyboard navigation */
.nav-btn:focus,
.today-btn:focus,
.calendar-day:focus,
select:focus {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .navbar,
    .calendar-settings,
    .calendar-navigation {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .calendar-grid,
    .moon-details,
    .moon-legend {
        background: white;
        border: 1px solid black;
    }
}






/* Navigation Logo */
.navbar-brand {
    display: flex;
    align-items: center; /* Vertically center the logo */
    padding: 0; /* Override Bootstrap's default padding if needed */
}

.brand-logo {
    height: 70px; /* Default height for desktop */
    width: auto; /* Maintain aspect ratio */
}

/* Responsive adjustments */
@media (max-width: 767px) {
    .brand-logo {
        height: 60px; /* Smaller logo on mobile */
    }
}



/* Add to your main.css */
@media (max-width: 480px) {
    .calendar-grid {
        min-width: 280px; /* Prevent crushing */
        overflow-x: auto; /* Allow horizontal scroll */
    }
    
    .calendar-day {
        min-width: 35px;   /* Minimum touch target */
        min-height: 50px;  /* Adequate height */
        padding: 3px 1px;  /* Reduced padding */
    }
    
    .calendar-day .date-number {
        font-size: 12px;   /* Smaller but readable */
    }
}

@media (max-width: 320px) {
    .calendar-day .date-number {
        font-size: 11px;
    }
    
    .calendar-day .illumination {
        font-size: 8px;
    }
}