/**
 * Error Page Styles (404)
 */

.error-page {
    min-height: 100vh;
    background: var(--color-bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.error-page__container {
    max-width: 1000px;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.error-page__content {
    text-align: left;
}

.error-page__code {
    font-size: 8rem;
    font-weight: 900;
    background: var(--gradient-accent);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
    margin-bottom: 1rem;
    animation: glitch 3s infinite;
}

@keyframes glitch {
    0%, 90%, 100% {
        transform: translate(0);
    }
    92% {
        transform: translate(-2px, 2px);
    }
    94% {
        transform: translate(2px, -2px);
    }
    96% {
        transform: translate(-2px, -2px);
    }
    98% {
        transform: translate(2px, 2px);
    }
}

.error-page__title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 1rem;
}

.error-page__message {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 2rem;
}

.error-page__suggestions {
    background: var(--color-surface-elevated);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
    border: var(--border-accent);
}

.error-page__suggestions-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 1rem;
}

.error-page__suggestions-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.error-page__suggestions-list li {
    display: flex;
    align-items: center;
}

.error-page__suggestions-list li::before {
    content: '→';
    color: var(--color-accent-blue);
    font-weight: bold;
    margin-right: 0.75rem;
    font-size: 1.25rem;
}

.error-page__link {
    color: var(--color-accent-blue);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-base);
}

.error-page__link:hover {
    color: var(--color-accent-purple);
    text-decoration: underline;
}

.error-page__actions {
    display: flex;
    gap: 1rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition-base);
    border: none;
    cursor: pointer;
}

.btn--primary {
    background: var(--gradient-accent);
    color: white;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.btn--primary:hover {
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

/* Illustration */
.error-page__illustration {
    display: flex;
    justify-content: center;
    align-items: center;
}

.error-page__grid {
    display: grid;
    grid-template-columns: repeat(3, 80px);
    grid-template-rows: repeat(3, 80px);
    gap: 1rem;
}

.error-page__grid-item {
    background: rgba(102, 126, 234, 0.1);
    border: 2px solid rgba(102, 126, 234, 0.3);
    border-radius: 8px;
    animation: pulse 2s ease-in-out infinite;
}

.error-page__grid-item:nth-child(1) {
    animation-delay: 0s;
}

.error-page__grid-item:nth-child(2) {
    animation-delay: 0.2s;
}

.error-page__grid-item:nth-child(3) {
    animation-delay: 0.4s;
}

.error-page__grid-item:nth-child(4) {
    animation-delay: 0.6s;
}

.error-page__grid-item:nth-child(6) {
    animation-delay: 0.8s;
}

.error-page__grid-item:nth-child(7) {
    animation-delay: 1s;
}

.error-page__grid-item:nth-child(8) {
    animation-delay: 1.2s;
}

.error-page__grid-item:nth-child(9) {
    animation-delay: 1.4s;
}

.error-page__grid-item--missing {
    background: transparent;
    border-style: dashed;
    border-color: rgba(239, 68, 68, 0.5);
    position: relative;
    overflow: hidden;
}

.error-page__grid-item--missing::before {
    content: '?';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2rem;
    color: rgba(239, 68, 68, 0.7);
    font-weight: bold;
    animation: bounce 1s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 0.5;
        transform: scale(1);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
}

@keyframes bounce {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        transform: translate(-50%, -50%) scale(1.2);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .error-page__container {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .error-page__content {
        text-align: center;
    }

    .error-page__code {
        font-size: 6rem;
    }

    .error-page__title {
        font-size: 2rem;
    }

    .error-page__message {
        font-size: 1rem;
    }

    .error-page__suggestions {
        text-align: left;
    }

    .error-page__actions {
        justify-content: center;
    }

    .error-page__grid {
        grid-template-columns: repeat(3, 60px);
        grid-template-rows: repeat(3, 60px);
        gap: 0.75rem;
    }
}

@media (max-width: 480px) {
    .error-page {
        padding: 1rem;
    }

    .error-page__code {
        font-size: 4rem;
    }

    .error-page__title {
        font-size: 1.75rem;
    }

    .error-page__suggestions {
        padding: 1.5rem;
    }

    .error-page__grid {
        grid-template-columns: repeat(3, 50px);
        grid-template-rows: repeat(3, 50px);
        gap: 0.5rem;
    }
}