/* Tutorial/Help System - Material Design 3 */

/* Help Modal Styles */
.help-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    backdrop-filter: blur(4px);
}

.help-modal.active {
    opacity: 1;
    visibility: visible;
}

.help-modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background: var(--md-sys-color-surface-container-low, var(--surface-container));
    border-radius: 28px;
    max-width: 90vw;
    max-height: 90vh;
    width: 800px;
    overflow: hidden;
    box-shadow: var(--md-sys-elevation-level5, var(--shadow-5));
    transition: transform 0.3s ease;
}

.help-modal.active .help-modal-content {
    transform: translate(-50%, -50%) scale(1);
}

.help-modal-header {
    padding: 24px;
    border-bottom: 1px solid var(--md-sys-color-outline-variant, var(--outline-variant));
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--md-sys-color-surface-container, var(--surface-container));
}

.help-modal-header h2 {
    margin: 0;
    color: var(--md-sys-color-on-surface, var(--on-surface));
    font: var(--md-sys-typescale-headline-large-font, var(--headline-large));
    font-size: var(--md-sys-typescale-headline-large-size, 32px);
    font-weight: var(--md-sys-typescale-headline-large-weight, 400);
    display: flex;
    align-items: center;
    gap: 12px;
}

.help-modal-header h2::before {
    content: '💡';
    font-size: 1.2em;
}

.help-modal-body {
    padding: 0;
    overflow-y: auto;
    max-height: calc(90vh - 120px);
}

.help-tabs {
    display: flex;
    background: var(--md-sys-color-surface-container-high, var(--surface-container-high));
    border-bottom: 1px solid var(--md-sys-color-outline-variant, var(--outline-variant));
    overflow-x: auto;
}

.help-tab {
    padding: 16px 24px;
    background: none;
    border: none;
    color: var(--md-sys-color-on-surface-variant, var(--on-surface-variant));
    cursor: pointer;
    transition: all 0.3s ease;
    font: var(--md-sys-typescale-label-large-font, var(--label-large));
    font-size: var(--md-sys-typescale-label-large-size, 14px);
    font-weight: var(--md-sys-typescale-label-large-weight, 500);
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 8px;
    position: relative;
}

.help-tab:hover {
    background: var(--md-sys-color-secondary-container, var(--secondary-container));
    color: var(--md-sys-color-on-secondary-container, var(--on-secondary-container));
}

.help-tab.active {
    background: var(--md-sys-color-primary-container, var(--primary-container));
    color: var(--md-sys-color-on-primary-container, var(--on-primary-container));
}

.help-tab.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--md-sys-color-primary, var(--primary-color));
}

.help-tab-content {
    display: none;
    padding: 32px;
    animation: fadeInUp 0.4s ease;
}

.help-tab-content.active {
    display: block;
}

.help-section {
    margin-bottom: 32px;
}

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

.help-section h3 {
    font: var(--md-sys-typescale-title-large-font, var(--title-large));
    font-size: var(--md-sys-typescale-title-large-size, 22px);
    font-weight: var(--md-sys-typescale-title-large-weight, 400);
    color: var(--md-sys-color-on-surface, var(--on-surface));
    margin: 0 0 16px 0;
    display: flex;
    align-items: center;
    gap: 12px;
}

.help-section h4 {
    font: var(--md-sys-typescale-title-medium-font, var(--title-medium));
    font-size: var(--md-sys-typescale-title-medium-size, 16px);
    font-weight: var(--md-sys-typescale-title-medium-weight, 500);
    color: var(--md-sys-color-on-surface, var(--on-surface));
    margin: 0 0 12px 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.help-section p {
    font: var(--md-sys-typescale-body-large-font, var(--body-large));
    font-size: var(--md-sys-typescale-body-large-size, 16px);
    line-height: var(--md-sys-typescale-body-large-line-height, 24px);
    margin: 0 0 16px 0;
}

.help-section ul {
    margin: 0 0 16px 0;
    padding-left: 24px;
}

.help-section li {
    font: var(--md-sys-typescale-body-large-font, var(--body-large));
    font-size: var(--md-sys-typescale-body-large-size, 16px);
    line-height: var(--md-sys-typescale-body-large-line-height, 24px);
    color: var(--md-sys-color-on-surface-variant, var(--on-surface-variant));
    margin-bottom: 8px;
}

.help-feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin: 24px 0;
}

.help-feature-card {
    background: var(--md-sys-color-surface-container-highest, var(--surface-container-highest));
    border: 1px solid var(--md-sys-color-outline-variant, var(--outline-variant));
    border-radius: 16px;
    padding: 20px;
    transition: all 0.3s ease;
}

.help-feature-card:hover {
    box-shadow: var(--md-sys-elevation-level2, var(--shadow-2));
    transform: translateY(-2px);
}

.help-feature-card h5 {
    font: var(--md-sys-typescale-title-small-font, var(--title-small));
    font-size: var(--md-sys-typescale-title-small-size, 14px);
    font-weight: var(--md-sys-typescale-title-small-weight, 500);
    color: var(--md-sys-color-on-surface, var(--on-surface));
    margin: 0 0 8px 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.help-feature-card p {
    font: var(--md-sys-typescale-body-medium-font, var(--body-medium));
    font-size: var(--md-sys-typescale-body-medium-size, 14px);
    line-height: var(--md-sys-typescale-body-medium-line-height, 20px);
    color: var(--md-sys-color-on-surface-variant, var(--on-surface-variant));
    margin: 0;
}

.help-shortcut h5 {
    margin: 0 0 8px 0;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.help-shortcut h5::before {
    content: '⚡';
}

.help-shortcut p {
    margin: 0;
    font-size: 14px;
}

.help-kbd {
    background: var(--md-sys-color-surface-container-highest, var(--surface-container-highest));
    border: 1px solid var(--md-sys-color-outline, var(--outline));
    border-radius: 6px;
    padding: 4px 8px;
    font-family: 'Courier New', monospace;
    font-size: 12px;
    font-weight: 600;
    color: var(--md-sys-color-on-surface, var(--on-surface));
    display: inline-block;
    margin: 0 2px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.help-step {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 20px;
    padding: 16px;
    background: var(--md-sys-color-surface-container-highest, var(--surface-container-highest));
    border-radius: 12px;
    border-left: 4px solid var(--md-sys-color-primary, var(--primary-color));
}

.help-step-number {
    background: var(--md-sys-color-primary, var(--primary-color));
    color: var(--md-sys-color-on-primary, var(--on-primary));
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
    flex-shrink: 0;
}

.help-step-content h5 {
    margin: 0 0 8px 0;
    font-weight: 600;
    color: var(--md-sys-color-on-surface, var(--on-surface));
}

.help-step-content p {
    margin: 0;
    color: var(--md-sys-color-on-surface-variant, var(--on-surface-variant));
}

.help-tip {
    background: var(--md-sys-color-secondary-container, var(--secondary-container));
    color: var(--md-sys-color-on-secondary-container, var(--on-secondary-container));
    padding: 16px;
    border-radius: 12px;
    margin: 16px 0;
    border-left: 4px solid var(--md-sys-color-secondary, var(--secondary-color));
}

.help-tip h5 {
    margin: 0 0 8px 0;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.help-tip h5::before {
    content: '💡';
}

.help-tip p {
    margin: 0;
    font-size: 14px;
}

.help-warning h5 {
    margin: 0 0 8px 0;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.help-warning h5::before {
    content: '⚠️';
}

.help-warning p {
    margin: 0;
    font-size: 14px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .help-modal-content {
        width: 95vw;
        max-height: 95vh;
    }
    
    .help-modal-header {
        padding: 16px;
    }
    
    .help-modal-header h2 {
        font-size: 24px;
    }
    
    .help-tabs {
        flex-wrap: wrap;
    }
    
    .help-tab {
        padding: 12px 16px;
        font-size: 12px;
    }
    
    .help-tab-content {
        padding: 20px;
    }
    
    .help-feature-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .help-step {
        flex-direction: column;
        text-align: center;
    }
    
    .help-step-number {
        align-self: center;
    }
}

@media (max-width: 480px) {
    .help-modal-content {
        width: 100vw;
        height: 100vh;
        max-width: none;
        max-height: none;
        border-radius: 0;
        transform: translate(-50%, -50%);
    }
    
    .help-modal.active .help-modal-content {
        transform: translate(-50%, -50%);
    }
    
    .help-modal-body {
        max-height: calc(100vh - 120px);
    }
    
    .help-tab-content {
        padding: 16px;
    }
}

/* Animation keyframes */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}