/* ==========================================================================
   Home Screen - Die drei großen Buttons
   ========================================================================== */

.home {
    padding: var(--spacing-xl) 0;
    min-height: 80vh;
    display: flex;
    flex-direction: column;
}

.home-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xxl);
}

.home-header h1 {
    margin-bottom: 0;
    font-size: var(--font-size-huge);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.home-header-actions {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

/* Navigation Cards - 3 große Buttons */
.home-nav {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    flex: 1;
    max-width: 400px;
    margin: 0 auto;
    width: 100%;
}

@media (min-width: 600px) {
    .home-nav {
        grid-template-columns: repeat(2, 1fr);
        max-width: 500px;
    }
}

@media (min-width: 900px) {
    .home-nav {
        grid-template-columns: repeat(6, 1fr);
        max-width: 1200px;
    }
}

.nav-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-xxl) var(--spacing-xl);
    background: var(--color-bg-card);
    border-radius: var(--border-radius-xl);
    text-decoration: none;
    color: var(--color-text);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.nav-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
}

.nav-card:hover {
    text-decoration: none;
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
}

.nav-card:active {
    transform: translateY(-4px) scale(1.01);
}

.nav-icon {
    font-size: 4rem;
    line-height: 1;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.1));
}

.nav-label {
    font-size: var(--font-size-xl);
    font-weight: 700;
}

/* Card Variants */
.nav-card-learn::before {
    background: linear-gradient(90deg, #22c55e, #16a34a);
}

.nav-card-learn:hover {
    box-shadow: var(--shadow-xl), 0 10px 40px -10px rgba(34, 197, 94, 0.4);
}

.nav-card-test::before {
    background: linear-gradient(90deg, #f59e0b, #d97706);
}

.nav-card-test:hover {
    box-shadow: var(--shadow-xl), 0 10px 40px -10px rgba(245, 158, 11, 0.4);
}

.nav-card-words::before {
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-dark));
}

.nav-card-words:hover {
    box-shadow: var(--shadow-xl), 0 10px 40px -10px rgba(99, 102, 241, 0.4);
}

.nav-card-stats::before {
    background: linear-gradient(90deg, #8b5cf6, #7c3aed);
}

.nav-card-stats:hover {
    box-shadow: var(--shadow-xl), 0 10px 40px -10px rgba(139, 92, 246, 0.4);
}

.nav-card-level::before {
    background: linear-gradient(90deg, #ec4899, #db2777);
}

.nav-card-level:hover {
    box-shadow: var(--shadow-xl), 0 10px 40px -10px rgba(236, 72, 153, 0.4);
}

.nav-card-teacher::before {
    background: linear-gradient(90deg, #14b8a6, #0d9488);
}

.nav-card-teacher:hover {
    box-shadow: var(--shadow-xl), 0 10px 40px -10px rgba(20, 184, 166, 0.4);
}

/* Disabled State */
.nav-card-disabled {
    opacity: 0.5;
    cursor: not-allowed;
    position: relative;
}

.nav-card-disabled:hover {
    transform: none;
    box-shadow: var(--shadow-lg);
}

.nav-badge-soon {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: #fff;
    background: var(--color-secondary);
    border-radius: var(--border-radius-sm);
}

/* ==========================================================================
   Responsive Home Navigation
   ========================================================================== */

/* iPad (768px - 1024px) */
@media (max-width: 1024px) {
    .home {
        padding: var(--spacing-lg) 0;
    }

    .home-header {
        margin-bottom: var(--spacing-xl);
    }

    .nav-card {
        padding: var(--spacing-xl) var(--spacing-lg);
        gap: var(--spacing-md);
    }

    .nav-icon {
        font-size: 3.5rem;
    }

    .nav-label {
        font-size: var(--font-size-lg);
    }
}

/* Large phones (600px - 768px) */
@media (max-width: 768px) {
    .home {
        padding: var(--spacing-md) 0;
        min-height: 70vh;
    }

    .home-header {
        gap: var(--spacing-sm);
        margin-bottom: var(--spacing-lg);
    }

    .home-header h1 {
        font-size: var(--font-size-xxl);
    }

    .home-nav {
        gap: var(--spacing-md);
    }

    .nav-card {
        padding: var(--spacing-lg) var(--spacing-md);
        gap: var(--spacing-sm);
        border-radius: var(--border-radius-lg);
    }

    .nav-card::before {
        height: 4px;
    }

    .nav-card:hover {
        transform: translateY(-5px) scale(1.01);
    }

    .nav-icon {
        font-size: 3rem;
    }

    .nav-label {
        font-size: var(--font-size-base);
    }

    .nav-badge-soon {
        top: var(--spacing-sm);
        right: var(--spacing-sm);
        padding: 2px var(--spacing-xs);
        font-size: 0.7rem;
    }
}

/* Phones (390px - 600px) */
@media (max-width: 600px) {
    .home {
        padding: var(--spacing-sm) 0;
        min-height: auto;
    }

    .home-header {
        margin-bottom: var(--spacing-md);
    }

    .home-header h1 {
        font-size: var(--font-size-xl);
    }

    .home-nav {
        gap: var(--spacing-sm);
        max-width: 100%;
    }

    .nav-card {
        padding: var(--spacing-md) var(--spacing-sm);
        gap: var(--spacing-xs);
        border-radius: var(--border-radius);
    }

    .nav-card::before {
        height: 3px;
    }

    .nav-card:hover {
        transform: translateY(-3px);
    }

    .nav-icon {
        font-size: 2.5rem;
    }

    .nav-label {
        font-size: var(--font-size-sm);
    }

    .nav-badge-soon {
        top: var(--spacing-xs);
        right: var(--spacing-xs);
        padding: 1px var(--spacing-xs);
        font-size: 0.65rem;
    }
}

/* iPhone 12 mini (375px) */
@media (max-width: 390px) {
    .home-header h1 {
        font-size: var(--font-size-lg);
    }

    .home-nav {
        gap: var(--spacing-xs);
    }

    .nav-card {
        padding: var(--spacing-sm) var(--spacing-xs);
        border-radius: var(--border-radius-sm);
    }

    .nav-icon {
        font-size: 2rem;
    }

    .nav-label {
        font-size: 0.8rem;
    }

    .nav-badge-soon {
        font-size: 0.6rem;
    }
}

/* ==========================================================================
   TTS Warning Banner
   ========================================================================== */

.tts-warning {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    border: 2px solid #f59e0b;
    border-radius: var(--border-radius-lg);
    color: #92400e;
    animation: slideDown 0.3s ease;
    position: relative;
}

.tts-warning[hidden] {
    display: none;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tts-warning-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.tts-warning-content {
    flex: 1;
    min-width: 0;
}

.tts-warning-content strong {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: #78350f;
    font-size: var(--font-size-base);
}

.tts-warning-content p {
    margin: 0;
    font-size: var(--font-size-sm);
    line-height: 1.6;
    word-wrap: break-word;
}

.tts-warning-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: #92400e;
    cursor: pointer;
    padding: 0;
    line-height: 1;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
    flex-shrink: 0;
}

.tts-warning-close:hover {
    opacity: 1;
}

/* iPad (768px - 1024px) */
@media (max-width: 1024px) {
    .tts-warning {
        padding: var(--spacing-md);
    }

    .tts-warning-content strong {
        font-size: var(--font-size-sm);
    }

    .tts-warning-content p {
        font-size: 0.8rem;
    }
}

/* Tablet small / Large phone (600px - 768px) */
@media (max-width: 768px) {
    .tts-warning {
        gap: var(--spacing-sm);
        padding: var(--spacing-sm) var(--spacing-md);
        border-radius: var(--border-radius);
    }

    .tts-warning-icon {
        font-size: 1.25rem;
    }

    .tts-warning-close {
        font-size: 1.25rem;
    }
}

/* Phone (up to 600px) */
@media (max-width: 600px) {
    .tts-warning {
        flex-direction: column;
        padding: var(--spacing-md);
        padding-right: calc(var(--spacing-md) + 24px);
    }

    .tts-warning-icon {
        display: none;
    }

    .tts-warning-close {
        position: absolute;
        top: var(--spacing-sm);
        right: var(--spacing-sm);
    }

    .tts-warning-content strong {
        font-size: var(--font-size-sm);
    }

    .tts-warning-content p {
        font-size: 0.75rem;
        line-height: 1.5;
    }
}

/* iPhone 12 mini and smaller (375px) */
@media (max-width: 390px) {
    .tts-warning {
        padding: var(--spacing-sm);
        padding-right: calc(var(--spacing-sm) + 20px);
        margin-bottom: var(--spacing-md);
        border-width: 1px;
    }

    .tts-warning-content strong {
        font-size: 0.8rem;
        margin-bottom: 4px;
    }

    .tts-warning-content p {
        font-size: 0.7rem;
        line-height: 1.4;
    }

    .tts-warning-close {
        font-size: 1rem;
        top: 6px;
        right: 6px;
    }
}