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

:root {
    /* Brand colors (consistent across modes) */
    --brand-blue: #5573A3;
    --brand-blue-dark: #4a6390;
    --brand-accent: #000066;
    
    /* Light mode colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #f4f4f4;
    --bg-hover: #e9ecef;
    --text-primary: #333;
    --text-secondary: #666;
    --text-tertiary: #999;
    --border-color: #e0e0e0;
    --border-color-secondary: #ddd;
    --primary-color: #5573A3;
    --primary-hover: #4a6390;
    --accent-dark-blue: #000066;
    --header-icon-color: #ffffff;
    --header-icon-hover: rgba(255, 255, 255, 0.8);
    --disabled-bg: #f0f0f0;
    --disabled-text: #999;
    --disabled-border: #ddd;
}

body.dark-mode {
    /* Dark mode colors */
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #242424;
    --bg-hover: #3a3a3a;
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --text-tertiary: #808080;
    --border-color: #404040;
    --border-color-secondary: #4a4a4a;
    --primary-color: #7089b8;
    --primary-hover: #8199c5;
    --accent-dark-blue: #0000aa;
    --disabled-bg: #2a2a2a;
    --disabled-text: #606060;
    --disabled-border: #3a3a3a;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-tertiary);
    min-height: 100vh;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* ===== LANDING PAGE STYLES ===== */
.landing-page {
    background-color: var(--brand-blue);
    background-image: url('images/uke_amp_upscale.png');
    background-size: cover;
    background-position: center;
}

.landing-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    position: relative;
}

.logo-area {
    margin-bottom: 3rem;
    text-align: center;
}

.main-logo {
    max-width: 500px;
    width: 100%;
    height: auto;
    border-radius: 8px;
}

.nav-grid {
    display: grid;
    grid-template-columns: repeat(2, 200px);
    grid-auto-rows: 80px;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.nav-button {
    font-size: 1.2rem;
    font-weight: 600;
    border: 2px solid var(--primary-color);
    background-color: var(--bg-primary);
    color: var(--primary-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.nav-button.active {
    background-color: var(--primary-color);
    color: #ffffff;
}

.nav-button.active:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(85, 115, 163, 0.3);
}

.nav-button.disabled {
    background-color: var(--disabled-bg);
    color: var(--disabled-text);
    border-color: var(--disabled-border);
    cursor: not-allowed;
}

/* Center a lone last button (e.g. 5th item in a 2-column grid) */
/* width matches the column size defined in grid-template-columns: repeat(2, 200px) */
.nav-grid .nav-button:last-child:nth-child(odd) {
    grid-column: 1 / -1;
    justify-self: center;
    width: 200px;
}

.landing-footer {
    margin-top: auto;
    padding: 1rem 0;
    color: #ffffff;
    font-size: 0.9rem;
}

/* ===== SONGS PAGE STYLES ===== */
.songs-page {
    background-color: var(--bg-primary);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header */
.songs-header {
    background-color: var(--brand-blue);
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.header-top {
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.hamburger-menu {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    color: var(--header-icon-color);
    display: flex;
    align-items: center;
    transition: color 0.3s ease, transform 0.3s ease;
}

.hamburger-menu:hover {
    color: var(--header-icon-hover);
}

.hamburger-menu.active {
    color: var(--header-icon-hover);
    transform: rotate(90deg);
}

.header-logo {
    flex: 1;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    padding: 0 1rem;
}

.header-logo .logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: transform 0.3s ease;
}

.header-logo .logo-link:hover {
    transform: scale(1.05);
}

.header-logo .ukulele-logo {
    height: 50px;
    width: 50px;
    object-fit: contain;
}

.social-icons {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.social-icon {
    color: var(--header-icon-color);
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: color 0.3s ease;
}

.social-icon:hover {
    color: var(--header-icon-hover);
}

/* Dark Mode Toggle */
.dark-mode-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    color: var(--header-icon-color);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.3s ease, transform 0.3s ease;
    border-radius: 4px;
}

.songs-header .dark-mode-toggle {
    color: var(--header-icon-color);
}

.songs-header .dark-mode-toggle:hover {
    color: var(--header-icon-hover);
    transform: scale(1.1);
}

.dark-mode-toggle:hover {
    color: var(--primary-color);
    transform: scale(1.1);
}

.dark-mode-toggle svg {
    width: 20px;
    height: 20px;
}

.dark-mode-toggle .sun-icon {
    display: block;
}

.dark-mode-toggle .moon-icon {
    display: none;
}

body.dark-mode .dark-mode-toggle .sun-icon {
    display: none;
}

body.dark-mode .dark-mode-toggle .moon-icon {
    display: block;
}

/* Dark Mode Toggle Container for Landing Page */
.dark-mode-toggle-container {
    position: absolute;
    top: 1rem;
    right: 1rem;
}

.dark-mode-toggle-container .dark-mode-toggle {
    color: var(--primary-color);
}

.dark-mode-toggle-container .dark-mode-toggle:hover {
    color: var(--primary-hover);
}

/* Main Content */
.songs-main {
    flex: 1;
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

.songs-tool-btn {
    padding: 0.6rem 1rem;
    border: 1px solid var(--primary-color);
    background-color: var(--bg-primary);
    color: var(--primary-color);
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.songs-tool-btn:hover {
    background-color: var(--primary-color);
    color: #ffffff;
}

/* Modal */
body.modal-open {
    overflow: hidden;
}

.modal-overlay[hidden] {
    display: none !important;
}

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 1rem;
}

.modal-content {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
    width: 100%;
    max-width: 560px;
    padding: 1.5rem;
    position: relative;
}

.modal-content h1 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.modal-content h2 {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
}

.download-modal-pref {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 1rem 0;
    color: var(--text-secondary);
}

#confirm-download-btn {
    width: 100%;
}

.modal-close-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.75rem;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 2rem;
    line-height: 1;
    cursor: pointer;
}

.modal-close-btn:hover {
    color: var(--text-primary);
}

/* Tabs */
.tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    border-bottom: 2px solid var(--border-color);
}

.tab-btn {
    padding: 0.75rem 2rem;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-btn:hover {
    color: var(--primary-color);
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

/* Search Bar */
.search-bar {
    position: relative;
    margin-bottom: 1.5rem;
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
}

#search-input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 3rem;
    border: 1px solid var(--border-color-secondary);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

#search-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Song List */
.song-list-container {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.song-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    background-color: var(--bg-secondary);
    border-radius: 8px;
    transition: all 0.2s ease;
}

.song-row:hover {
    background-color: var(--bg-hover);
    transform: translateX(4px);
}

.song-name {
    flex: 1;
    font-size: 1rem;
    color: var(--text-primary);
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 100%;
}

.song-actions {
    display: flex;
    gap: 0.75rem;
}

.icon-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.icon-btn:hover {
    background-color: var(--primary-color);
    color: #ffffff;
}

.song-row.fullbook-row {
    background: linear-gradient(90deg, rgba(85, 115, 163, 0.15), var(--bg-secondary));
    border: 1px solid var(--primary-color);
}

.song-row.fullbook-row .song-name {
    font-weight: 700;
}

.error,
.no-results {
    text-align: center;
    padding: 2rem;
    color: var(--text-tertiary);
    font-style: italic;
}

/* Footer */
.songs-footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 1.5rem 0;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: auto;
}

/* ===== HEADER MENU SLIDE-DOWN STYLES ===== */
.header-menu {
    max-height: 0;
    overflow: hidden;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    transition: max-height 0.3s ease, padding 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 0 1.5rem;
}

.header-menu.open {
    max-height: 400px;
    padding: 1rem 1.5rem;
}

.header-menu .menu-link {
    padding: 0.875rem 1.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    border: 2px solid var(--primary-color);
    background-color: var(--bg-primary);
    color: var(--primary-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: block;
    text-align: center;
}

.header-menu .menu-link.active {
    background-color: var(--primary-color);
    color: #ffffff;
}

.header-menu .menu-link:not(.disabled):hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(85, 115, 163, 0.3);
}

.header-menu .menu-link.disabled {
    background-color: var(--disabled-bg);
    color: var(--disabled-text);
    border-color: var(--disabled-border);
    cursor: not-allowed;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .landing-container {
        padding: 1rem;
    }

    .nav-grid {
        grid-template-columns: 1fr;
        width: 100%;
        max-width: 300px;
    }

    .nav-grid .nav-button:last-child:nth-child(odd) {
        width: 100%;
    }

    .nav-button {
        font-size: 1.1rem;
    }

    .header-top {
        padding: 1rem;
    }

    .songs-main {
        padding: 1.5rem 1rem;
    }

    .tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .tab-btn {
        padding: 0.75rem 1.5rem;
        white-space: nowrap;
    }

    .song-row {
        padding: 0.875rem 1rem;
    }

    .song-name {
        font-size: 0.95rem;
    }

    .icon-btn {
        padding: 0.4rem;
    }
}

@media (max-width: 480px) {
    .logo-area {
        margin-bottom: 2rem;
    }

    .main-logo {
        max-width: 250px;
    }

    .nav-grid {
        gap: 1rem;
    }

    .header-logo .title-logo {
        height: 35px;
        max-width: 55%;
    }

    .header-logo .ukulele-logo {
        height: 40px;
        width: 40px;
        object-fit: contain;
    }

    .social-icons {
        gap: 0.75rem;
    }
}


/* Pagination Styles */
.pagination-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 1.5rem 0;
    margin-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.pagination-btn {
    padding: 0.5rem 1.25rem;
    border: 1px solid var(--border-color);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    touch-action: manipulation;
}

.pagination-btn:hover:not(:disabled) {
    background-color: var(--primary-color);
    color: #ffffff;
    border-color: var(--primary-color);
}

.pagination-btn:disabled {
    background-color: var(--disabled-bg);
    color: var(--disabled-text);
    border-color: var(--disabled-border);
    cursor: not-allowed;
    opacity: 0.6;
}

.pagination-info {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0 0.5rem;
}

@media (max-width: 480px) {
    .pagination-container {
        gap: 0.5rem;
        padding: 1rem 0;
    }
    
    .pagination-btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.85rem;
    }
    
    .pagination-info {
        font-size: 0.85rem;
    }
}

/* ===== CONTENT PAGE STYLES ===== */
.content-page {
    background-color: var(--bg-primary);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.content-main {
    flex: 1;
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
    padding: 3rem 1.5rem;
    text-align: center;
}

.content-main h1 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.content-main p {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.calendar-embed {
    width: 100%;
    max-width: 100%;
    border: none;
    margin-top: 1rem;
    color-scheme: normal;
}

@media (max-width: 768px) {
    .content-main {
        padding: 2rem 1.5rem;
    }
    
    .content-main h1 {
        font-size: 2rem;
    }
    
    .content-main p {
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .header-logo .ukulele-logo {
        height: 40px;
        width: 40px;
    }
}

/* ===== ABOUT PAGE STYLES ===== */
.about-main {
    text-align: left;
}

.about-section {
    margin-bottom: 2rem;
}

.about-section h2 {
    font-size: 1.4rem;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.about-section p {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.about-section ul {
    list-style: disc;
    padding-left: 1.5rem;
    color: var(--text-primary);
    font-size: 1rem;
}

.about-section a {
    color: var(--primary-color);
    text-decoration: underline;
}

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