/* ========== LUNAR LANDER LAB STYLES ========== */

.lander-main {
    max-width: 900px;
    margin: 0 auto;
    padding: 4.5rem 1.5rem 2rem;
    position: relative;
    z-index: 1;
}

/* Hero */
.lander-hero {
    text-align: center;
    margin-bottom: 0.6rem;
}

.lander-title {
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 900;
    color: var(--neon-cyan);
    text-shadow: 0 0 30px var(--cyan-text-glow);
    margin-bottom: 0.2rem;
    letter-spacing: 2px;
}

.lander-subtitle {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Algorithm tabs — reuse pong pattern */
.algo-tabs {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 0.4rem;
}

.algo-tab {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 1px;
    padding: 0.5rem 1.2rem;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.algo-tab:hover {
    color: var(--neon-cyan);
    border-color: var(--neon-cyan);
}

.algo-tab.active {
    color: var(--neon-cyan);
    border-color: var(--neon-cyan);
    background: rgba(0, 240, 255, 0.08);
    text-shadow: 0 0 8px var(--cyan-text-glow);
    box-shadow: 0 0 12px rgba(0, 240, 255, 0.15);
}

/* HUD bar */
.lander-hud {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    padding: 0.4rem 1rem;
    margin-bottom: 0.3rem;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 1px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-subtle);
    border-radius: 6px;
}

.hud-item {
    color: var(--text-primary);
}

.hud-label {
    color: var(--text-secondary);
    margin-right: 0.3rem;
}

#hud-algo {
    color: var(--neon-cyan);
}

#hud-landrate {
    color: var(--neon-green);
}

#hud-epsilon {
    color: var(--neon-pink);
}

#hud-level {
    color: var(--neon-yellow);
}

/* Canvas container */
.canvas-wrap {
    position: relative;
    width: 100%;
    aspect-ratio: 4 / 3;
    margin-bottom: 1rem;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border-subtle);
    box-shadow: 0 0 30px rgba(0, 240, 255, 0.1);
}

#lander-canvas {
    display: block;
    width: 100%;
    height: 100%;
    background: #0a0a12;
}

/* Overlay */
.canvas-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.6);
    pointer-events: none;
    transition: opacity 0.5s ease;
    z-index: 2;
}

.canvas-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.canvas-overlay p {
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--neon-green);
    text-shadow: 0 0 12px rgba(57, 255, 20, 0.5);
    letter-spacing: 2px;
}

.canvas-overlay .overlay-sub {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--neon-cyan);
    margin-top: 0.5rem;
    text-shadow: 0 0 8px var(--cyan-text-glow);
    letter-spacing: 3px;
}

/* Train controls */
.train-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    margin-bottom: 0.4rem;
}

.train-btn {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 1px;
    padding: 0.45rem 1rem;
    background: transparent;
    color: var(--neon-green);
    border: 1px solid var(--neon-green);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.train-btn:hover {
    background: rgba(57, 255, 20, 0.1);
    box-shadow: 0 0 12px rgba(57, 255, 20, 0.2);
}

.train-btn.training {
    color: var(--neon-pink);
    border-color: var(--neon-pink);
    animation: pulse-border 1s ease-in-out infinite;
}

.train-btn.training:hover {
    background: rgba(255, 0, 110, 0.1);
    box-shadow: 0 0 12px rgba(255, 0, 110, 0.2);
}

@keyframes pulse-border {
    0%, 100% { border-color: var(--neon-pink); }
    50% { border-color: transparent; }
}

.train-select {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    padding: 0.4rem 0.6rem;
    background: var(--glass-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
    border-radius: 4px;
    cursor: pointer;
}

.train-select option {
    background: var(--bg-primary, #0a0a12);
    color: var(--text-primary);
}

.train-progress {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--neon-green);
    min-width: 4rem;
}

/* Algorithm info card */
.algo-info {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    padding: 1.2rem 1.5rem;
    margin-bottom: 2rem;
}

.algo-info-title {
    font-family: var(--font-display);
    font-size: 1rem;
    color: var(--neon-cyan);
    margin-bottom: 0.5rem;
    letter-spacing: 1px;
}

.algo-info-text {
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ========== ACTOR-CRITIC VISUALIZATION PANEL ========== */

.ac-panel {
    display: flex;
    gap: 1.5rem;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    padding: 1rem 1.5rem;
    margin-bottom: 1rem;
    transition: opacity 0.3s ease, max-height 0.3s ease;
}

.ac-panel.hidden {
    opacity: 0;
    max-height: 0;
    padding: 0 1.5rem;
    margin-bottom: 0;
    overflow: hidden;
    pointer-events: none;
}

.ac-heading {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 2px;
    color: var(--text-secondary);
    margin-bottom: 0.6rem;
    text-transform: uppercase;
}

/* Critic side — vertical meter */
.ac-critic {
    flex: 0 0 80px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.critic-meter {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
}

.critic-bar-bg {
    width: 24px;
    height: 100px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-subtle);
    border-radius: 4px;
    position: relative;
    overflow: hidden;
}

.critic-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 0%;
    background: #39ff14;
    border-radius: 0 0 3px 3px;
    transition: height 0.15s ease, background 0.3s ease;
}

.critic-value {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-primary);
}

.critic-labels {
    display: flex;
    justify-content: space-between;
    width: 100%;
    margin-top: 0.2rem;
}

.critic-lo, .critic-hi {
    font-family: var(--font-mono);
    font-size: 0.55rem;
    color: var(--text-secondary);
    letter-spacing: 1px;
}

.critic-lo { color: #ff3333; }
.critic-hi { color: #39ff14; }

/* Actor side — action probability bars */
.ac-actor {
    flex: 1;
}

.action-probs {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.action-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.action-name {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 1px;
    color: var(--text-secondary);
    width: 42px;
    flex-shrink: 0;
    text-align: right;
}

.action-bar-bg {
    flex: 1;
    height: 14px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-subtle);
    border-radius: 3px;
    overflow: hidden;
    position: relative;
}

.action-bar {
    height: 100%;
    width: 0%;
    background: var(--neon-cyan);
    border-radius: 2px;
    transition: width 0.15s ease;
    font-family: var(--font-mono);
    font-size: 0.55rem;
    color: var(--bg-primary, #0a0a12);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 3px;
    white-space: nowrap;
}

.action-bar.top-action {
    background: var(--neon-green);
    box-shadow: 0 0 6px rgba(57, 255, 20, 0.4);
}

/* Responsive */
@media (max-width: 640px) {
    .lander-main {
        padding: 5rem 1rem 2rem;
    }

    .lander-title {
        font-size: 1.4rem;
    }

    .algo-tabs {
        gap: 0.3rem;
    }

    .algo-tab {
        font-size: 0.7rem;
        padding: 0.4rem 0.8rem;
    }

    .lander-hud {
        gap: 0.8rem;
        font-size: 0.65rem;
        flex-wrap: wrap;
    }

    .canvas-overlay p {
        font-size: 1rem;
    }

    .train-controls {
        flex-wrap: wrap;
    }

    .train-btn {
        font-size: 0.7rem;
        padding: 0.35rem 0.8rem;
    }

    .ac-panel {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }

    .ac-critic {
        flex-direction: row;
        gap: 1rem;
    }

    .critic-bar-bg {
        width: 100%;
        height: 20px;
    }

    .critic-bar {
        height: 100% !important;
        width: 0%;
        bottom: auto;
        left: 0;
        top: 0;
        right: auto;
        border-radius: 3px 0 0 3px;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .lander-title {
        text-shadow: none;
    }
    .algo-tab.active {
        text-shadow: none;
        box-shadow: none;
    }
    .critic-bar {
        transition: none;
    }
    .action-bar {
        transition: none;
    }
}