/* Variables y Sistema de Diseño */
:root {
    --bg-dark: #07070a;
    --neon-blue: #00f3ff;
    --neon-red: #ff003c;
    --neon-purple: #b026ff;
    --neon-green: #00ff66;
    --text-main: #ffffff;
    --text-muted: #8892b0;
    
    /* Configuración de Glassmorphism */
    --glass-bg: rgba(10, 10, 16, 0.4);
    --glass-border: rgba(0, 243, 255, 0.15);
    --glass-blur: blur(16px);
}

/* Reset básico y Tipografía */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    overflow: hidden;
    width: 100vw;
    height: 100vh;
    user-select: none;
}

#canvas-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    background: radial-gradient(circle at center, #12121e 0%, var(--bg-dark) 100%);
}

#ui-layer {
    position: relative;
    z-index: 10;
    width: 100%;
    height: 100%;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 2.5rem;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    pointer-events: auto;
}

.logo {
    font-family: 'Space Mono', monospace;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -1px;
    text-shadow: 0 0 15px rgba(255, 255, 255, 0.3);
}

.logo span { color: var(--neon-blue); }

.status-indicator, .emotion-display {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--glass-bg);
    padding: 10px 24px;
    border-radius: 30px;
    border: 1px solid var(--glass-border);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    font-family: 'Space Mono', monospace;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

.led {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--neon-green);
    box-shadow: 0 0 10px var(--neon-green);
    animation: pulseLed 2s infinite;
}

.emotion-display { color: var(--neon-blue); border-color: rgba(0, 243, 255, 0.3); }

.interaction-hints {
    position: absolute;
    top: 50%;
    left: 2.5rem;
    transform: translateY(-50%);
    background: var(--glass-bg);
    padding: 1.5rem;
    border-radius: 16px;
    border: 1px solid var(--glass-border);
    backdrop-filter: var(--glass-blur);
    min-width: 260px;
    pointer-events: auto;
}

.hint-title { display: flex; align-items: center; gap: 10px; font-weight: 700; margin-bottom: 1rem; font-size: 1rem; }
.hint-title svg { color: var(--neon-blue); }
.interaction-hints ul { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.interaction-hints li { font-size: 0.85rem; color: var(--text-muted); display: flex; justify-content: space-between; border-bottom: 1px solid rgba(255, 255, 255, 0.05); padding-bottom: 8px; }
.interaction-hints li span { color: var(--neon-blue); font-family: 'Space Mono', monospace; font-size: 0.75rem; }

.chat-wrapper { align-self: center; width: 100%; max-width: 450px; margin-bottom: 1rem; }
.chat-container { background: var(--glass-bg); border: 1px solid var(--glass-border); border-radius: 20px; backdrop-filter: var(--glass-blur); pointer-events: auto; display: flex; flex-direction: column; overflow: hidden; box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6); }
.chat-header { background: rgba(0, 0, 0, 0.4); padding: 12px 20px; font-family: 'Space Mono', monospace; font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; border-bottom: 1px solid var(--glass-border); }
.chat-history { height: 220px; overflow-y: auto; padding: 1.5rem; display: flex; flex-direction: column; gap: 15px; scrollbar-width: thin; scrollbar-color: var(--neon-blue) transparent; }
.chat-history::-webkit-scrollbar { width: 4px; }
.chat-history::-webkit-scrollbar-thumb { background-color: var(--neon-blue); border-radius: 10px; }

.message { padding: 12px 16px; border-radius: 14px; max-width: 85%; font-size: 0.9rem; line-height: 1.5; animation: slideUpFade 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards; transform-origin: bottom left; }
.message.robot { align-self: flex-start; background: rgba(0, 243, 255, 0.08); border: 1px solid rgba(0, 243, 255, 0.2); color: var(--text-main); border-bottom-left-radius: 4px; }
.message.user { align-self: flex-end; background: rgba(176, 38, 255, 0.15); border: 1px solid rgba(176, 38, 255, 0.3); color: var(--text-main); border-bottom-right-radius: 4px; transform-origin: bottom right; }

.chat-input-area { display: flex; padding: 1rem 1.2rem; background: rgba(0, 0, 0, 0.5); border-top: 1px solid var(--glass-border); gap: 12px; }
#chat-input { flex: 1; background: transparent; border: none; color: var(--text-main); font-family: 'Inter', sans-serif; font-size: 0.95rem; outline: none; }
#chat-input::placeholder { color: var(--text-muted); }
#send-btn { background: var(--neon-blue); border: none; color: #000; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1); padding: 8px; border-radius: 10px; box-shadow: 0 0 15px rgba(0, 243, 255, 0.4); }
#send-btn:hover { transform: scale(1.05) translateY(-2px); box-shadow: 0 4px 20px rgba(0, 243, 255, 0.6); background: #ffffff; }

@keyframes pulseLed { 0% { box-shadow: 0 0 5px var(--neon-green); opacity: 0.8; } 50% { box-shadow: 0 0 20px var(--neon-green); opacity: 1; } 100% { box-shadow: 0 0 5px var(--neon-green); opacity: 0.8; } }
@keyframes slideUpFade { from { opacity: 0; transform: translateY(10px) scale(0.95); } to { opacity: 1; transform: translateY(0) scale(1); } }

@media (max-width: 900px) {
    .interaction-hints { display: none; }
    .header { flex-wrap: wrap; gap: 1rem; justify-content: center; }
    .logo { display: none; }
    #ui-layer { padding: 1.5rem; }
}