/**
 * Acoustic Threshold Styling
 * Doorways that reveal through presence, not immediate visibility
 *
 * The strange is the signal.
 */

/* Threshold Messages */
.threshold-message {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(10, 10, 15, 0.95);
    border: 1px solid rgba(255, 215, 0, 0.3);
    border-radius: 8px;
    padding: 2rem 3rem;
    text-align: center;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 1rem;
    color: #ffd700;
    letter-spacing: 0.1em;
    z-index: 10000;
    opacity: 0;
    animation: messageAppear 0.5s ease-out forwards;
    pointer-events: none;
}

.threshold-message.instruction {
    border-color: rgba(0, 217, 255, 0.5);
    color: #00d9ff;
}

.threshold-message.guidance {
    border-color: rgba(157, 78, 221, 0.5);
    color: #9d4edd;
}

@keyframes messageAppear {
    from {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
}

.threshold-message.fade-out {
    animation: messageFade 0.5s ease-out forwards;
}

@keyframes messageFade {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.9);
    }
}

/* Doorway States */
.doorway-card {
    opacity: 1;
    transform: none;
    filter: none;
    pointer-events: all;
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.js-enabled .doorway-card {
    opacity: 0;
    transform: scale(0.8);
    filter: blur(10px);
    pointer-events: none;
}

.js-enabled .doorway-card.revealed {
    opacity: 1;
    transform: scale(1);
    filter: blur(0);
    pointer-events: all;
    animation: doorwayReveal 1.5s ease-out;
}

@keyframes doorwayReveal {
    0% {
        opacity: 0;
        transform: scale(0.8) translateY(20px);
        filter: blur(10px);
        box-shadow: 0 0 0 rgba(255, 215, 0, 0);
    }
    50% {
        box-shadow: 0 0 30px rgba(255, 215, 0, 0.5);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
        filter: blur(0);
        box-shadow: 0 0 0 rgba(255, 215, 0, 0);
    }
}

/* Presence Indicator */
.presence-indicator {
    position: fixed;
    top: 20px;
    right: 20px;
    background: rgba(10, 10, 15, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 1rem;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.75rem;
    color: #8888a0;
    z-index: 9000;
    opacity: 0.5;
    transition: opacity 0.3s ease;
}

.presence-indicator:hover {
    opacity: 1;
}

.presence-stat {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.5rem;
}

.presence-stat:last-child {
    margin-bottom: 0;
}

.presence-label {
    color: #555566;
}

.presence-value {
    color: #ffd700;
    font-weight: 600;
}

/* Acoustic Visualization */
.acoustic-field {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 5;
    opacity: 0.3;
}

.acoustic-wave {
    position: absolute;
    border: 1px solid rgba(255, 215, 0, 0.3);
    border-radius: 50%;
    animation: waveExpand 2s ease-out forwards;
}

@keyframes waveExpand {
    from {
        width: 0;
        height: 0;
        opacity: 1;
    }
    to {
        width: 400px;
        height: 400px;
        opacity: 0;
    }
}

/* Unrevealed Doorway Hint */
.js-enabled .doorway-card.unrevealed {
    opacity: 0.1;
    filter: blur(15px);
    transform: scale(0.9);
}

.js-enabled .doorway-card.unrevealed:hover {
    opacity: 0.15;
}

/* Frequency Display (on hover of revealed doors) */
.js-enabled .doorway-card.revealed::after {
    content: attr(data-frequency) ' Hz';
    position: absolute;
    bottom: 0.5rem;
    right: 0.5rem;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.6rem;
    color: rgba(255, 215, 0, 0.3);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.js-enabled .doorway-card.revealed:hover::after {
    opacity: 1;
}

/* Mobile */
@media (max-width: 768px) {
    .presence-indicator {
        top: auto;
        bottom: 80px;
        right: 10px;
        left: 10px;
        font-size: 0.65rem;
        padding: 0.75rem;
    }

    .threshold-message {
        width: calc(100% - 2rem);
        max-width: none;
        padding: 1.5rem;
        font-size: 0.9rem;
    }
}

/* Accessibility: Respect prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
    .doorway-card,
    .threshold-message,
    .acoustic-wave {
        animation: none;
        transition: opacity 0.3s ease;
    }

    .doorway-card.revealed {
        opacity: 1;
        transform: none;
        filter: none;
    }
}