:root {
    --bg-deep: #06060f;
    --bg-surface: rgba(12, 12, 30, 0.85);
    --accent-blue: #00d4ff;
    --accent-violet: #a855f7;
    --accent-gold: #fbbf24;
    --glass-bg: rgba(15, 15, 40, 0.65);
    --glass-border: rgba(255, 255, 255, 0.08);
    --text-primary: #e8e8f0;
    --text-muted: rgba(200, 200, 220, 0.6);
    --font-display: 'Bricolage Grotesque', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
    width: 100%; height: 100%;
    overflow: hidden;
    background: var(--bg-deep);
    color: var(--text-primary);
    font-family: var(--font-display);
}

.hidden { display: none !important; }

/* ===== LANDING SCREEN ===== */
#landing-screen {
    position: fixed; inset: 0;
    display: flex; align-items: center; justify-content: center;
    z-index: 10;
}

#bg-canvas-container {
    position: absolute; inset: 0; z-index: 0;
    background: radial-gradient(ellipse at 30% 20%, rgba(168,85,247,0.12) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 80%, rgba(0,212,255,0.08) 0%, transparent 50%),
                var(--bg-deep);
}

#bg-canvas-container canvas {
    position: absolute; inset: 0; width: 100%; height: 100%;
}

#landing-content {
    position: relative; z-index: 1;
    display: flex; flex-direction: column; align-items: center;
    width: 90%; max-width: 640px;
    padding: 2rem;
}

#title-section { text-align: center; margin-bottom: 2.5rem; }

#main-title {
    font-size: clamp(2.5rem, 7vw, 4.5rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-violet) 50%, var(--accent-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: titleShimmer 4s ease-in-out infinite alternate;
    filter: drop-shadow(0 0 40px rgba(0,212,255,0.3));
    line-height: 1.1;
}

@keyframes titleShimmer {
    0% { filter: drop-shadow(0 0 30px rgba(0,212,255,0.3)); }
    50% { filter: drop-shadow(0 0 50px rgba(168,85,247,0.4)); }
    100% { filter: drop-shadow(0 0 30px rgba(251,191,36,0.3)); }
}

#subtitle {
    font-family: var(--font-mono);
    font-weight: 300;
    font-size: clamp(0.85rem, 2vw, 1.1rem);
    color: var(--text-muted);
    margin-top: 0.8rem;
    letter-spacing: 0.05em;
}

#prompt-section { width: 100%; position: relative; }

#prompt-input {
    width: 100%;
    padding: 1.2rem 1.4rem;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 300;
    resize: none;
    outline: none;
    transition: border-color 0.3s, box-shadow 0.3s;
}

#prompt-input:focus {
    border-color: rgba(0,212,255,0.4);
    box-shadow: 0 0 30px rgba(0,212,255,0.1), inset 0 0 20px rgba(0,212,255,0.03);
}

#prompt-input::placeholder {
    color: rgba(200,200,220,0.35);
    transition: opacity 0.3s;
}

#generate-btn {
    position: relative;
    display: block;
    width: 100%;
    margin-top: 1rem;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, rgba(0,212,255,0.2), rgba(168,85,247,0.2));
    border: 1px solid rgba(0,212,255,0.3);
    border-radius: 14px;
    color: white;
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    cursor: pointer;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.3s;
}

#generate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 40px rgba(0,212,255,0.25);
}

#generate-btn:active { transform: translateY(0); }

.btn-glow {
    position: absolute; inset: -2px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-violet), var(--accent-gold));
    border-radius: 15px;
    opacity: 0;
    z-index: -1;
    animation: btnPulse 2s ease-in-out infinite;
}

@keyframes btnPulse {
    0%, 100% { opacity: 0; }
    50% { opacity: 0.3; }
}

.btn-text { position: relative; z-index: 1; }

/* Advanced options */
#advanced-toggle {
    margin-top: 1.2rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
    cursor: pointer;
    user-select: none;
    transition: color 0.2s;
}
#advanced-toggle:hover { color: var(--accent-blue); }

#adv-arrow { display: inline-block; transition: transform 0.3s; }
#adv-arrow.open { transform: rotate(90deg); }

#advanced-panel {
    width: 100%;
    margin-top: 0.8rem;
    padding: 1rem 1.2rem;
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    overflow: hidden;
    transition: max-height 0.4s ease, opacity 0.3s;
}

#advanced-panel.collapsed {
    max-height: 0; opacity: 0; padding: 0 1.2rem;
    border: none;
}

#advanced-panel:not(.collapsed) {
    max-height: 400px; opacity: 1;
}

.adv-row {
    display: flex; align-items: center; gap: 0.8rem;
    margin-bottom: 0.7rem;
    font-size: 0.85rem;
}

.adv-row label { 
    min-width: 90px; 
    font-family: var(--font-mono); 
    font-weight: 400;
    color: var(--text-muted);
}

.adv-row select, .adv-row input[type="range"] {
    flex: 1;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 6px;
    color: var(--text-primary);
    padding: 0.3rem 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

.adv-row select { cursor: pointer; }
.adv-row select option { background: #1a1a2e; }

.slider-wrap { 
    display: flex; align-items: center; gap: 0.5rem; flex: 1; 
}

.slider-label { 
    font-size: 0.7rem; 
    color: var(--text-muted); 
    white-space: nowrap;
    font-family: var(--font-mono);
}

input[type="range"] {
    -webkit-appearance: none;
    height: 4px;
    background: rgba(255,255,255,0.15);
    border-radius: 2px;
    border: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px; height: 14px;
    border-radius: 50%;
    background: var(--accent-blue);
    cursor: pointer;
    box-shadow: 0 0 8px rgba(0,212,255,0.4);
}

/* Local LLM Status */
.llm-status {
    flex-direction: column !important;
    align-items: stretch !important;
}

#llm-status-inner {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-muted);
}

#llm-status-icon {
    font-size: 1rem;
    line-height: 1;
}

#llm-status-icon.spinning {
    animation: spinPulse 1.2s ease-in-out infinite;
}

@keyframes spinPulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(0.9); }
}

#llm-status-text {
    flex: 1;
    min-width: 120px;
}

#llm-progress-bar {
    width: 100%;
    height: 4px;
    background: rgba(255,255,255,0.08);
    border-radius: 2px;
    overflow: hidden;
    display: none;
    margin-top: 0.3rem;
}

#llm-progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-violet));
    border-radius: 2px;
    transition: width 0.3s ease;
    box-shadow: 0 0 8px rgba(0,212,255,0.4);
}

.llm-load-btn {
    padding: 0.35rem 0.8rem;
    background: linear-gradient(135deg, rgba(0,212,255,0.15), rgba(168,85,247,0.15));
    border: 1px solid rgba(0,212,255,0.3);
    border-radius: 6px;
    color: var(--accent-blue);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    cursor: pointer;
    transition: background 0.2s, transform 0.15s;
    white-space: nowrap;
}

.llm-load-btn:hover {
    background: linear-gradient(135deg, rgba(0,212,255,0.25), rgba(168,85,247,0.25));
    transform: translateY(-1px);
}

.model-badge {
    padding: 0.5rem 0;
    border-top: 1px solid var(--glass-border);
    margin-top: 0.3rem;
}

/* Floating LLaMA download banner */
.llm-download-banner {
    width: 100%;
    margin-top: 1.2rem;
    padding: 0.8rem 1.2rem;
    background: linear-gradient(135deg, rgba(0,212,255,0.08), rgba(168,85,247,0.08));
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(0,212,255,0.2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: wrap;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
    transition: opacity 0.4s, transform 0.4s, max-height 0.4s;
    max-height: 120px;
    overflow: hidden;
    animation: bannerSlideIn 0.5s ease-out;
}

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

.llm-download-banner.hidden-banner {
    opacity: 0;
    max-height: 0;
    padding: 0 1.2rem;
    margin-top: 0;
    border: none;
    pointer-events: none;
}

.llm-download-banner .banner-icon {
    font-size: 1.1rem;
    line-height: 1;
}

.llm-download-banner .banner-icon.spinning {
    animation: spinPulse 1.2s ease-in-out infinite;
}

#banner-text {
    flex: 1;
    min-width: 120px;
}

#banner-progress-bar {
    width: 100%;
    height: 3px;
    background: rgba(255,255,255,0.08);
    border-radius: 2px;
    overflow: hidden;
    display: none;
}

#banner-progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-violet));
    border-radius: 2px;
    transition: width 0.3s ease;
    box-shadow: 0 0 8px rgba(0,212,255,0.4);
}

.banner-dismiss {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 0.9rem;
    cursor: pointer;
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    transition: color 0.2s, background 0.2s;
}

.banner-dismiss:hover {
    color: var(--text-primary);
    background: rgba(255,255,255,0.08);
}

.badge-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--accent-violet);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.badge-link {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent-blue);
    text-decoration: none;
}
.badge-link:hover { text-decoration: underline; }

.tooltip-trigger {
    font-size: 0.75rem;
    color: var(--text-muted);
    cursor: help;
}

/* Recent Prompts */
#recent-prompts {
    display: flex; flex-wrap: wrap; gap: 0.4rem;
    margin-top: 1.5rem;
    justify-content: center;
}

.recent-pill {
    padding: 0.35rem 0.8rem;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 20px;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s;
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.recent-pill:hover {
    background: rgba(0,212,255,0.1);
    border-color: rgba(0,212,255,0.3);
    color: var(--accent-blue);
}

/* Footer */
#landing-footer {
    margin-top: 2.5rem;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: rgba(200,200,220,0.3);
    text-align: center;
}

#landing-footer a { color: rgba(0,212,255,0.5); text-decoration: none; }
#landing-footer a:hover { color: var(--accent-blue); }

/* ===== LOADING SCREEN ===== */
#loading-screen {
    position: fixed; inset: 0;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    background: var(--bg-deep);
    z-index: 20;
}

#loading-vortex-container {
    position: absolute; inset: 0;
}

#loading-vortex-container canvas {
    width: 100%; height: 100%;
}

#loading-steps {
    position: relative; z-index: 1;
    display: flex; flex-direction: column; gap: 0.8rem;
}

.load-step {
    display: flex; align-items: center; gap: 0.8rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: rgba(200,200,220,0.25);
    transition: color 0.5s, opacity 0.5s;
}

.load-step.active { color: var(--text-primary); }
.load-step.done { color: var(--accent-blue); }

.step-check { 
    opacity: 0; transition: opacity 0.3s; 
    color: var(--accent-gold);
}
.load-step.done .step-check { opacity: 1; }

#loading-prompt-display {
    position: relative; z-index: 1;
    margin-top: 2rem;
    padding: 0.5rem 1.2rem;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-radius: 8px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
    max-width: 400px;
    text-align: center;
}

/* ===== SCENE VIEW ===== */
#scene-view {
    position: fixed; inset: 0;
    z-index: 5;
}

#scene-container {
    position: absolute; inset: 0;
}

#scene-container canvas { display: block; }

/* HUD */
#hud-prompt {
    position: fixed; top: 16px; left: 16px;
    padding: 0.4rem 0.9rem;
    background: var(--glass-bg);
    backdrop-filter: blur(14px);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    max-width: 280px;
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
    z-index: 100;
    pointer-events: none;
}

#hud-minimap {
    position: fixed; top: 16px; right: 16px;
    width: 120px; height: 120px;
    background: var(--glass-bg);
    backdrop-filter: blur(14px);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    overflow: hidden;
    z-index: 100;
    pointer-events: none;
}

#minimap-canvas { width: 100%; height: 100%; }

#hud-controls {
    position: fixed; bottom: 16px; left: 16px;
    padding: 0.7rem 1rem;
    background: var(--glass-bg);
    backdrop-filter: blur(14px);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    z-index: 100;
    pointer-events: none;
    transition: opacity 0.5s;
}

.control-line {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: rgba(200,200,220,0.4);
    line-height: 1.6;
}

#hud-actions {
    position: fixed; bottom: 16px; right: 16px;
    display: flex; flex-direction: column; gap: 8px;
    z-index: 100;
}

.hud-btn {
    width: 44px; height: 44px;
    background: var(--glass-bg);
    backdrop-filter: blur(14px);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1.2rem;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: background 0.2s, transform 0.15s;
}

.hud-btn:hover {
    background: rgba(0,212,255,0.15);
    transform: scale(1.08);
}

/* Mobile controls */
.mobile-only { display: none; }

@media (max-width: 768px) {
    .mobile-only { display: block; }
    #hud-controls { display: none; }
}

#mobile-joystick {
    position: fixed; bottom: 80px; left: 40px;
    z-index: 110;
}

#joystick-base {
    width: 100px; height: 100px;
    border-radius: 50%;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    display: flex; align-items: center; justify-content: center;
    touch-action: none;
}

#joystick-thumb {
    width: 40px; height: 40px;
    border-radius: 50%;
    background: rgba(0,212,255,0.3);
    border: 1px solid rgba(0,212,255,0.5);
    transition: transform 0.05s;
}

#mobile-fly {
    position: fixed; bottom: 80px; right: 40px;
    display: flex; flex-direction: column; gap: 8px;
    z-index: 110;
}

.mobile-fly-btn {
    width: 50px; height: 50px;
    border-radius: 50%;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    color: var(--text-muted);
    font-size: 1.2rem;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
}

/* Screenshot Modal */
#screenshot-modal {
    position: fixed; inset: 0; z-index: 200;
    display: flex; align-items: center; justify-content: center;
}

#modal-backdrop {
    position: absolute; inset: 0;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(4px);
}

#modal-content {
    position: relative; z-index: 1;
    background: var(--bg-surface);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 2rem;
    max-width: 500px; width: 90%;
    text-align: center;
}

#modal-content h2 {
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-violet));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

#screenshot-img {
    width: 100%;
    border-radius: 8px;
    margin-bottom: 0.8rem;
    border: 1px solid var(--glass-border);
}

#modal-prompt-text {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
    padding: 0.4rem;
}

#modal-actions { display: flex; gap: 0.6rem; justify-content: center; flex-wrap: wrap; }

.modal-btn {
    padding: 0.6rem 1.2rem;
    background: rgba(0,212,255,0.12);
    border: 1px solid rgba(0,212,255,0.25);
    border-radius: 8px;
    color: var(--accent-blue);
    font-family: var(--font-mono);
    font-size: 0.82rem;
    cursor: pointer;
    transition: background 0.2s;
}

.modal-btn:hover { background: rgba(0,212,255,0.25); }

.modal-close {
    background: rgba(255,255,255,0.05);
    border-color: rgba(255,255,255,0.1);
    color: var(--text-muted);
}