/* Mobile-First: Basis-Styles gelten für mobile Geräte */
.base-tile {
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    background: linear-gradient(135deg, var(--color-tile-bg-gradient-start), var(--color-tile-bg-gradient-end));
    padding: 35px 30px;
    margin: 15px;
    border: 1px solid var(--color-tile-border);
    border-radius: 12px;
    box-shadow: 0 4px 6px var(--color-tile-shadow), 0 2px 4px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

.base-tile::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-tile-accent-gradient-start), var(--color-tile-accent-gradient-end));
    opacity: 0;
    transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 4px rgba(0, 102, 204, 0.2);
}

.base-tile:hover {
    transform: translateY(-6px) scale(1.02);
    box-shadow: 0 12px 24px var(--color-tile-shadow-hover), 0 8px 16px rgba(0, 0, 0, 0.1), 0 4px 8px rgba(0, 0, 0, 0.08);
    border-color: var(--color-tile-border-hover);
    background: linear-gradient(135deg, #ffffff, #f0f7ff);
}

.base-tile:hover::before {
    opacity: 1;
}

.base-tile-number {
    font-family: var(--font-family-primary);
    font-size: var(--font-size-xxl);
    line-height: var(--line-height-tight);
    text-align: center;
    margin-bottom: 15px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-tile-number-gradient-start), var(--color-tile-number-gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
    text-shadow: 0 2px 4px rgba(0, 102, 204, 0.2);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

.base-tile-text {
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    text-align: center;
    color: var(--color-text-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

.base-tile-title {
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    font-weight: 600;
    text-align: center;
    margin-bottom: 15px;
    color: var(--color-text);
    letter-spacing: 0.2px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

.base-tiles-row {
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    display: flex;
    flex-wrap: wrap;
    align-items: stretch;
}

/* Regel 003 von 011-ui-mobile.mdc: In der Mobile Version darf pro Zeile nur 1 Tile sein */
.base-tiles-row .base-tile {
    flex: 1 1 100%;
    width: 100%;
    min-width: 100%;
    height: 200px;
}

/* Mobile-First: Responsive Design - Regel 022: 4 Breakpoints */
/* Basis-Styles gelten für mobile (max-width: 576px) - keine Media Query erforderlich */

/* Tablet/iPad (min-width: 600px) */
@media (min-width: 600px) {
    .base-tile {
        padding: 30px 25px;
    }
    
    .base-tiles-row .base-tile {
        flex: 1 1 0;
        min-width: 200px;
        width: auto;
    }
}

/* Kleiner Desktop/13-Zoll (min-width: 1024px) */
@media (min-width: 1024px) {
    .base-tile {
        padding: 40px 35px;
        border-radius: 14px;
    }
    
    .base-tile-number {
        font-size: 2.75rem;
        margin-bottom: 18px;
    }
    
    .base-tile-title {
        font-size: var(--font-size-large);
        margin-bottom: 18px;
    }
}

/* Großer Desktop/Widescreen (min-width: 1440px) */
@media (min-width: 1440px) {
    .base-tile {
        padding: 45px 40px;
        border-radius: 16px;
    }
    
    .base-tile-number {
        font-size: 3.25rem;
        margin-bottom: 20px;
    }
    
    .base-tile-title {
        font-size: var(--font-size-xl);
        margin-bottom: 20px;
    }
}