/* CSS Variables for Dark Theme */
:root {
    --bts-bg-dark: #2c3e50; /* Darker background for container */
    --bts-cell-dark: #34495e; /* Lighter background for day cells */
    --bts-text-white: #ecf0f1; /* White-ish text */
    --bts-muted-text: #bdc3c7; /* Muted text for descriptions */
    --bts-accent-blue: #3498db; /* A subtle blue accent for indicators/links */
    --bts-border-dark: #4a647d; /* Darker border */
    --bts-hover-dark: #42596e; /* Hover state for cells */
    --bts-rank-one: #f39c12; /* Gold-ish for rank 1 */
}

/* General Calendar Container */
.bts-calendar-container.bts-dark-theme {
    background-color: var(--bts-bg-dark);
    color: var(--bts-text-white);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    max-width: 900px;
    margin: 30px auto;
}

/* Calendar Header */
.bts-calendar-header-public {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--bts-border-dark);
}

.bts-calendar-header-public .bts-branch-name {
    margin: 0;
    font-size: 1.8em;
    color: var(--bts-text-white);
    flex-basis: 100%; /* Take full width on small screens */
    text-align: center;
}

.bts-calendar-header-public .bts-month-year {
    font-size: 1.2em;
    color: var(--bts-muted-text);
    margin: 10px 0;
    flex-grow: 1; /* Allows it to take available space */
    text-align: center;
}

.bts-shortcode-display {
    display: flex;
    align-items: center;
    margin-top: 10px;
    flex-basis: 100%; /* Take full width on small screens */
    justify-content: center;
}

.bts-shortcode-display input {
    background-color: var(--bts-cell-dark);
    border: 1px solid var(--bts-border-dark);
    color: var(--bts-text-white);
    padding: 5px 10px;
    border-radius: 4px 0 0 4px;
    font-family: monospace;
    font-size: 0.85em;
    flex-grow: 1;
    max-width: 250px;
}

.bts-shortcode-display .copy-shortcode-btn {
    background-color: var(--bts-accent-blue);
    color: var(--bts-text-white);
    border: 1px solid var(--bts-accent-blue);
    border-left: none;
    padding: 5px 10px;
    border-radius: 0 4px 4px 0;
    cursor: pointer;
    transition: background-color 0.2s ease;
    height: 32px; /* Match input height */
    display: flex;
    align-items: center;
    justify-content: center;
}

.bts-shortcode-display .copy-shortcode-btn:hover {
    background-color: #2980b9;
}

/* Calendar Grid */
.bts-calendar-grid-wrapper {
    background-color: var(--bts-cell-dark);
    border: 1px solid var(--bts-border-dark);
    border-radius: 6px;
    overflow: hidden; /* For border-radius on children */
}

.bts-calendar-weekdays-public {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    background-color: var(--bts-bg-dark);
    font-weight: bold;
    border-bottom: 1px solid var(--bts-border-dark);
}

.bts-calendar-weekdays-public span {
    padding: 10px;
    text-align: center;
    border-right: 1px solid var(--bts-border-dark);
    color: var(--bts-text-white);
}

.bts-calendar-weekdays-public span:last-child {
    border-right: none;
}

.bts-calendar-days-public {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
}

.bts-day-public {
    min-height: 80px;
    padding: 10px;
    border: 1px solid var(--bts-border-dark);
    background-color: var(--bts-cell-dark);
    text-align: right;
    position: relative;
    transition: background-color 0.2s ease-in-out;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-end;
}

.bts-day-public:hover {
    background-color: var(--bts-hover-dark);
    cursor: pointer;
}

.bts-day-public.bts-empty-day-public {
    background-color: #3f566d; /* Slightly different dark for empty */
    cursor: default;
}

.bts-day-public .day-number {
    font-weight: bold;
    font-size: 1.2em;
    color: var(--bts-text-white);
    margin-bottom: 5px;
}

.bts-day-public.has-content {
    cursor: pointer;
}

.bts-day-public .content-indicator,
.bts-day-public .link-indicator-weekend {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    position: absolute;
    bottom: 5px;
}

.bts-day-public .content-indicator {
    background-color: var(--bts-accent-blue);
    left: 5px;
}

.bts-day-public .link-indicator-weekend {
    background-color: var(--bts-rank-one); /* Orange color */
    left: 15px; /* Position next to content indicator */
}


.bts-loading-public {
    text-align: center;
    padding: 30px;
    font-size: 1.1em;
    color: var(--bts-muted-text);
    grid-column: 1 / -1; /* Span all columns */
}

.bts-error-public {
    color: #e74c3c;
    padding: 20px;
    border: 1px solid #e74c3c;
    background-color: #5d3838;
    grid-column: 1 / -1;
    text-align: center;
}

/* Modal Styling (Global Placeholder) */
.bts-calendar-modal-backdrop {
    display: none; /* Hidden by default */
    position: fixed; /* Stay in place */
    z-index: 10000; /* Sit on top */
    left: 0;
    top: 0;
    width: 100%; /* Full width */
    height: 100%; /* Full height */
    overflow: auto; /* Enable scroll if needed */
    background-color: rgba(0,0,0,0.7); /* Black w/ opacity */
    animation-name: fadeIn;
    animation-duration: 0.3s;
}

.bts-calendar-modal-content {
    background-color: var(--bts-bg-dark);
    color: var(--bts-text-white);
    margin: 5% auto; /* 5% from the top and centered */
    padding: 25px;
    border: 1px solid var(--bts-border-dark);
    width: 90%; /* Responsive width */
    max-width: 700px;
    position: relative;
    box-shadow: 0 8px 25px rgba(0,0,0,0.5);
    animation-name: slideInTop;
    animation-duration: 0.4s;
    border-radius: 10px;
}

.bts-modal-loading {
    text-align: center;
    padding: 20px;
    color: var(--bts-muted-text);
}

@keyframes fadeIn {
    from {opacity: 0}
    to {opacity: 1}
}

@keyframes slideInTop {
    from {transform: translateY(-50px); opacity: 0}
    to {transform: translateY(0); opacity: 1}
}

.bts-calendar-modal-content .bts-close-button {
    color: var(--bts-muted-text);
    float: right;
    font-size: 30px;
    font-weight: bold;
    position: absolute;
    top: 15px;
    right: 25px;
    line-height: 1;
    cursor: pointer;
    transition: color 0.2s ease;
}

.bts-calendar-modal-content .bts-close-button:hover,
.bts-calendar-modal-content .bts-close-button:focus {
    color: var(--bts-text-white);
}

.bts-modal-header {
    text-align: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--bts-border-dark);
}

.bts-modal-header h3 {
    margin: 0;
    font-size: 1.5em;
    color: var(--bts-text-white);
}

.bts-modal-header span {
    display: block;
    color: var(--bts-muted-text);
    font-size: 0.9em;
    margin-top: 5px;
}
.bts-modal-header .bts-modal-quiz-id {
    font-size: 0.8em;
    color: #e67e22; /* Orange for quiz ID */
    margin-top: 5px;
}


/* Modal Tabs */
.bts-modal-tabs {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--bts-border-dark);
    padding-bottom: 10px;
}

.bts-modal-tabs button {
    background-color: transparent;
    border: none;
    padding: 10px 15px;
    color: var(--bts-muted-text);
    font-size: 1em;
    cursor: pointer;
    transition: color 0.2s ease, border-bottom 0.2s ease;
    position: relative;
    outline: none;
}

.bts-modal-tabs button:hover {
    color: var(--bts-text-white);
}

.bts-modal-tabs button.active {
    color: var(--bts-text-white);
    font-weight: bold;
}
.bts-modal-tabs button.active::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -11px; /* Position below the border */
    width: 100%;
    height: 3px;
    background-color: var(--bts-accent-blue);
    border-radius: 2px;
}


.bts-tab-content {
    display: none; /* Hidden by default */
    padding: 15px 0;
}

#bts-tab-content-description p {
    line-height: 1.6;
    color: var(--bts-muted-text);
}

/* Table Content (All Topics) */
#bts-modal-table-content table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

#bts-modal-table-content th,
#bts-modal-table-content td {
    border: 1px solid var(--bts-border-dark);
    padding: 10px;
    text-align: left;
    color: var(--bts-muted-text);
}

#bts-modal-table-content th {
    background-color: var(--bts-cell-dark);
    color: var(--bts-text-white);
}

/* Links Section */
#bts-modal-links-content {
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px solid var(--bts-border-dark);
    text-align: center;
}

.bts-link-item {
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px dashed var(--bts-border-dark);
}
.bts-link-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.bts-link-item .bts-link-label {
    display: block;
    font-size: 1.1em;
    margin-bottom: 8px;
    color: var(--bts-text-white);
}

.bts-link-item .bts-activate-link-btn {
    background-color: var(--bts-accent-blue);
    color: var(--bts-text-white);
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1em;
    transition: background-color 0.2s ease;
    text-decoration: none; /* For direct link button styling */
    display: inline-block;
}

.bts-link-item .bts-activate-link-btn:hover:not(:disabled) {
    background-color: #2980b9;
}

.bts-link-item .bts-activate-link-btn:disabled {
    background-color: #555;
    cursor: not-allowed;
    opacity: 0.7;
}

/* Messages (Opens at / Future day) */
#bts-modal-message {
    text-align: center;
    padding: 20px;
    background-color: #3f566d;
    border-radius: 6px;
    margin-top: 20px;
    font-size: 1.1em;
    color: var(--bts-text-white);
}

/* Results Section */
#bts-modal-results-section {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--bts-border-dark);
    text-align: center;
}

#bts-modal-results-section h4 {
    color: var(--bts-text-white);
    font-size: 1.3em;
    margin-bottom: 15px;
}

#bts-results-board {
    background-color: var(--bts-cell-dark);
    border: 1px solid var(--bts-border-dark);
    border-radius: 8px;
    padding: 15px;
    max-height: 400px;
    overflow-y: auto;
    box-shadow: inset 0 0 8px rgba(0,0,0,0.2);
}

.bts-result-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px dashed rgba(255,255,255,0.1);
    align-items: center;
    opacity: 0; /* For animation */
    transform: translateY(20px); /* For animation */
}

.bts-result-row:last-child {
    border-bottom: none;
}

.bts-result-row .rank {
    font-weight: bold;
    color: var(--bts-accent-blue);
    flex-basis: 30px;
    text-align: left;
}

.bts-result-row .name {
    flex-grow: 1;
    text-align: left;
    color: var(--bts-text-white);
    padding-left: 10px;
}

.bts-result-row .score {
    font-weight: bold;
    color: var(--bts-rank-one);
    flex-basis: 80px;
    text-align: right;
}

.bts-result-row.rank-one {
    background-color: rgba(243, 156, 18, 0.2); /* Highlight for top rank */
    border-radius: 5px;
    padding: 10px;
    animation: pulseRankOne 1.5s infinite alternate;
}

@keyframes pulseRankOne {
    0% {
        box-shadow: 0 0 0px var(--bts-rank-one);
    }
    100% {
        box-shadow: 0 0 10px var(--bts-rank-one);
    }
}

.bts-no-results {
    color: var(--bts-muted-text);
    text-align: center;
    padding: 20px;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .bts-calendar-container.bts-dark-theme {
        padding: 10px;
        margin: 10px auto;
        border-radius: 0;
    }

    .bts-calendar-header-public {
        flex-direction: column;
        align-items: center;
    }

    .bts-shortcode-display {
        flex-wrap: wrap;
        width: 100%;
        margin-top: 15px;
    }
    .bts-shortcode-display input {
        flex-grow: 1;
        max-width: none;
        border-radius: 4px; /* No longer attached to button */
        margin-bottom: 10px;
    }
    .bts-shortcode-display .copy-shortcode-btn {
        width: 100%;
        border-radius: 4px;
        border-left: 1px solid var(--bts-accent-blue);
    }

    .bts-day-public {
        min-height: 60px;
        font-size: 0.9em;
    }

    .bts-day-public .day-number {
        font-size: 1em;
    }

    .bts-day-public .content-indicator,
    .bts-day-public .link-indicator-weekend {
        width: 4px;
        height: 4px;
        bottom: 3px;
    }
    .bts-day-public .link-indicator-weekend {
        left: 10px;
    }

    /* Full-screen modal on mobile */
    .bts-calendar-modal-content {
        margin: 0;
        width: 100%;
        height: 100%;
        max-width: none;
        border-radius: 0;
        overflow-y: auto; /* Enable scrolling within modal content */
    }

    .bts-modal-tabs {
        flex-direction: column;
        gap: 5px;
    }
    .bts-modal-tabs button {
        width: 100%;
        border-bottom: 1px solid var(--bts-border-dark);
        padding: 8px 10px;
    }
    .bts-modal-tabs button.active::after {
        display: none; /* Hide active indicator for vertical tabs */
    }
    .bts-modal-tabs button.active {
        background-color: var(--bts-hover-dark);
    }

    .bts-link-item .bts-activate-link-btn {
        width: 100%;
    }
}