:root {
    --primary-color: #333;
    --accent-color: #007bff;
    --bg-color: #f8f9fa;
    --text-color: #333;
    --card-bg: #fff;
    --card-border: #dee2e6;
}

[data-theme="dark"] {
    --primary-color: #fff;
    --accent-color: #0d6efd;
    --bg-color: #212529;
    --text-color: #f8f9fa;
    --card-bg: #343a40;
    --card-border: #495057;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: all 0.3s ease;
    min-height: 100vh;
    padding: 20px 0;
}

.logo-container {
    text-align: center;
    margin-bottom: 20px;
}

.logo-img {
    max-width: 120px;
    height: auto;
}

.main-title {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 20px;
    font-weight: bold;
}

.app-description {
    text-align: center;
    margin-bottom: 30px;
}

.app-card {
    background-color: var(--card-bg);
    border-radius: 8px;
    border: 1px solid var(--card-border);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 25px;
    margin-bottom: 30px;
}

.form-label {
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--primary-color);
}

.options-section {
    margin-bottom: 25px;
    border-bottom: 1px solid var(--card-border);
    padding-bottom: 15px;
}

.submit-btn {
    min-width: 150px;
    padding: 10px 20px;
    font-weight: 600;
}

.options-title {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-weight: 600;
    font-size: 1.2rem;
}

.themed-switch .form-check-input:checked {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
}

.tooltip-icon {
    cursor: help;
    color: var(--accent-color);
    margin-left: 5px;
}

#loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    visibility: hidden;
    opacity: 0;
    transition: visibility 0s, opacity 0.3s;
}

#loading-overlay.active {
    visibility: visible;
    opacity: 1;
}

.loading-spinner {
    width: 70px;
    height: 70px;
}

#error-message {
    display: none;
    margin-top: 15px;
}

#sample-data-buttons .btn {
    margin-right: 8px;
    margin-bottom: 8px;
}

.format-guide {
    border: 1px solid var(--card-border);
    border-radius: 6px;
    background-color: rgba(13, 110, 253, 0.05);
    padding: 12px;
    margin-bottom: 12px;
}

[data-theme="dark"] .format-guide {
    background-color: rgba(13, 110, 253, 0.12);
}

.format-guide-title {
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--primary-color);
}

.format-guide-columns {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 8px;
}

.format-guide .badge {
    font-size: 0.8rem;
    padding: 0.45em 0.65em;
}

.format-guide-example {
    font-family: ui-monospace, SFMono-Regular, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    font-size: 0.85rem;
    margin-bottom: 0;
    word-break: break-word;
}

.validation-panel {
    display: none;
    border-radius: 6px;
    padding: 12px;
    margin-top: 12px;
}

.validation-panel.validation-success {
    display: block;
    background-color: rgba(25, 135, 84, 0.1);
    border: 1px solid rgba(25, 135, 84, 0.3);
}

.validation-panel.validation-warning {
    display: block;
    background-color: rgba(255, 193, 7, 0.12);
    border: 1px solid rgba(255, 193, 7, 0.35);
}

.validation-panel.validation-info {
    display: block;
    background-color: rgba(13, 110, 253, 0.1);
    border: 1px solid rgba(13, 110, 253, 0.3);
}

.validation-panel.validation-error {
    display: block;
    background-color: rgba(220, 53, 69, 0.08);
    border: 1px solid rgba(220, 53, 69, 0.28);
}

.validation-panel-title {
    font-weight: 600;
    margin-bottom: 6px;
}

.validation-panel ul {
    padding-left: 1.2rem;
    margin-bottom: 0;
}

.validation-panel li + li {
    margin-top: 4px;
}

.validation-line-jump {
    border: 0;
    background: none;
    color: var(--accent-color);
    padding: 0;
    margin: 0;
    text-decoration: underline;
    font: inherit;
    font-weight: 600;
    cursor: pointer;
}

.validation-line-jump:hover {
    opacity: 0.85;
}

.validation-line-jump:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
    border-radius: 4px;
}

.player-list-input-wrap {
    position: relative;
    width: 100%;
}

.player-list-line-numbers {
    position: absolute;
    top: 1px;
    left: 1px;
    bottom: 1px;
    width: 3.5rem;
    border-right: 1px solid var(--card-border);
    border-radius: 0.375rem 0 0 0.375rem;
    background-color: rgba(0, 0, 0, 0.04);
    color: #6c757d;
    text-align: right;
    padding: 0.375rem 0.5rem;
    overflow: hidden;
    white-space: pre;
    line-height: 1.5;
    font-size: 1rem;
    font-family: ui-monospace, SFMono-Regular, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    pointer-events: none;
}

[data-theme="dark"] .player-list-line-numbers {
    background-color: rgba(255, 255, 255, 0.08);
}

.player-list-input-wrap #playerList {
    padding-left: 4.2rem;
    line-height: 1.5;
    font-size: 1rem;
    font-family: ui-monospace, SFMono-Regular, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    field-sizing: fixed;
    height: 16rem;
    overflow-y: auto;
    resize: vertical;
}

#drop-area {
    border: 2px dashed var(--card-border);
    border-radius: 6px;
    padding: 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-color);
    background-color: rgba(0, 0, 0, 0.02);
    margin-bottom: 15px;
    display: flex;
    justify-content: center;
    align-items: center;
}

[data-theme="dark"] #drop-area {
    background-color: rgba(255, 255, 255, 0.05);
}

#drop-area:hover,
#drop-area.dragover {
    border-color: var(--accent-color);
    background-color: rgba(0, 123, 255, 0.05);
}

#drop-area .drop-message {
    text-align: center;
}

#drop-area .drop-message i {
    display: block;
    margin-bottom: 10px;
    color: var(--accent-color);
}

#drop-area .drop-message p {
    margin-bottom: 0;
    font-size: 0.9rem;
}

#app-version {
    font-size: 0.8rem;
}

.time-estimator-results {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 6px;
    padding: 16px 12px;
}

.time-estimator-results .est-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-color);
}

.time-estimator-results .est-label {
    font-size: 0.8rem;
    color: #6c757d;
    display: block;
    margin-bottom: 2px;
}

.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
}

/* Add responsive styling */
@media (max-width: 767px) {
    .app-card {
        padding: 15px;
    }

    #drop-area {
        padding: 15px 5px;
    }
}