.notfound-page {
    height: calc(100vh - var(--header-height, 70px));
    width: 100vw;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at center, var(--bg-panel) 0%, var(--bg-base) 100%);
    padding: 20px;
    box-sizing: border-box;
    position: relative;
    overflow: hidden;
}

.notfound-glow-bg {
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(var(--primary-rgb), 0.15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    filter: blur(50px);
    animation: notfoundPulse 6s ease-in-out infinite alternate;
}

.notfound-card {
    background: rgba(var(--bg-panel-rgb), 0.75);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border: 1px solid var(--border-lighter);
    border-radius: 24px;
    padding: 48px 36px;
    max-width: 520px;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.45), 0 0 35px rgba(var(--primary-rgb), 0.08);
    position: relative;
    z-index: 2;
    animation: notfoundFadeIn 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.notfound-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 50px;
    background: rgba(var(--primary-rgb), 0.12);
    border: 1px solid rgba(var(--primary-rgb), 0.3);
    color: var(--primary);
    font-size: 0.78rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 20px;
}

.notfound-badge-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 8px var(--primary);
}

.notfound-illustration {
    position: relative;
    width: 120px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
}

.notfound-board-icon {
    width: 90px;
    height: 90px;
    color: var(--primary);
    filter: drop-shadow(0 8px 20px rgba(var(--primary-rgb), 0.35));
    animation: notfoundFloat 3.5s ease-in-out infinite;
}

.notfound-code {
    font-size: clamp(4rem, 10vw, 5.5rem);
    font-weight: 900;
    line-height: 1;
    margin: 0;
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    letter-spacing: -2px;
    background: linear-gradient(135deg, var(--text-pure) 25%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 10px 30px rgba(var(--primary-rgb), 0.2);
}

.notfound-title {
    font-size: clamp(1.4rem, 3.5vw, 1.8rem);
    font-weight: 800;
    color: var(--text-pure);
    margin: 12px 0 8px 0;
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.notfound-desc {
    font-size: 0.95rem;
    color: var(--text-dim);
    line-height: 1.6;
    max-width: 420px;
    margin: 0 0 32px 0;
}

.notfound-actions {
    display: flex;
    gap: 14px;
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
}

.notfound-btn-primary {
    background: var(--primary);
    color: var(--text-pure);
    font-weight: 700;
    font-size: 0.95rem;
    border-radius: 12px;
    padding: 13px 26px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    border: none;
    cursor: pointer;
    transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.2s, background-color 0.2s;
    box-shadow: 0 4px 18px rgba(var(--primary-rgb), 0.35);
    text-decoration: none;
    font-family: inherit;
}

.notfound-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 26px rgba(var(--primary-rgb), 0.5);
    filter: brightness(1.08);
}

.notfound-btn-primary svg {
    width: 18px;
    height: 18px;
}

.notfound-btn-secondary {
    background: var(--bg-input);
    color: var(--text-main);
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: 12px;
    padding: 13px 22px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    border: 1px solid var(--border-lighter);
    cursor: pointer;
    transition: transform 0.2s, background 0.2s, color 0.2s, border-color 0.2s;
    text-decoration: none;
    font-family: inherit;
}

.notfound-btn-secondary:hover {
    background: var(--border-lighter);
    color: var(--text-pure);
    border-color: var(--primary);
    transform: translateY(-2px);
}

.notfound-btn-secondary svg {
    width: 18px;
    height: 18px;
    opacity: 0.85;
}

@keyframes notfoundFadeIn {
    from {
        opacity: 0;
        transform: translateY(16px) scale(0.97);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes notfoundFloat {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-8px) rotate(-2deg);
    }
}

@keyframes notfoundPulse {
    0% {
        transform: scale(0.9);
        opacity: 0.6;
    }
    100% {
        transform: scale(1.15);
        opacity: 0.9;
    }
}

@media (max-width: 600px) {
    .notfound-card {
        padding: 36px 20px;
        border-radius: 20px;
    }

    .notfound-actions {
        flex-direction: column;
        width: 100%;
    }

    .notfound-btn-primary,
    .notfound-btn-secondary {
        width: 100%;
        box-sizing: border-box;
    }
}