/* --- Reset y Fuentes --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;700&display=swap');
:root {
    --primary-bg: #101010;
    --secondary-bg: #1d1d1f;
    --primary-text: #f5f5f7;
    --secondary-text: #a1a1a6;
    --accent-blue: #0071e3;
    --accent-green: #30d158;
    --accent-purple: #5e5ce6;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: 'Inter', sans-serif;
    background-color: var(--primary-bg);
    color: var(--primary-text);
    overflow: hidden;
    height: 100vh;
    width: 100vw;
}

/* --- Estructura de Pantallas --- */
.screen { display: none; }
.screen.visible { display: flex; flex-direction: column; height: 100%; }

/* --- Pantalla de Bienvenida --- */
#welcome-screen { justify-content: center; align-items: center; text-align: center; }
.logo-container { position: relative; width: 120px; height: 120px; margin: 0 auto 20px auto; }
.logo-bg { width: 100%; height: 100%; background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple)); border-radius: 25%; animation: spin 20s linear infinite; }
.logo-icon { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); font-size: 50px; color: white; }
h1 { font-size: 2.8em; font-weight: 700; }
#loading-status { color: var(--secondary-text); margin-top: 10px; }
#user-creation { margin-top: 30px; }
#user-creation p { margin-bottom: 5px; }
#user-creation input { background: var(--secondary-bg); border: 1px solid #333; color: var(--primary-text); padding: 12px; border-radius: 8px; margin-top: 5px; width: 80%; }
#user-creation button { background: var(--accent-blue); color: white; border: none; padding: 12px 20px; border-radius: 8px; cursor: pointer; margin-top: 20px; font-weight: 500; }

/* --- App Principal --- */
#app-container { position: relative; }
#camera-feed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover; z-index: -1; }
header { display: flex; justify-content: space-between; align-items: center; padding: 15px 20px; background: linear-gradient(to bottom, rgba(0,0,0,0.5), transparent); }
#status-indicator { display: flex; align-items: center; background-color: rgba(0,0,0,0.4); backdrop-filter: blur(10px); padding: 8px 15px; border-radius: 20px; }
.status-dot { width: 10px; height: 10px; background-color: var(--accent-green); border-radius: 50%; margin-right: 10px; animation: pulse 2s infinite; }
#status-text { font-weight: 500; }
.header-btn { background: none; border: none; color: white; font-size: 1.5em; cursor: pointer; }

main { flex-grow: 1; display: flex; align-items: flex-end; padding: 20px; }
#output-container { width: 100%; background-color: rgba(0,0,0,0.5); backdrop-filter: blur(15px); border-radius: 15px; padding: 20px; animation: slideUp 0.5s ease-out; }
#output-text { font-size: 1.2em; line-height: 1.5; }

footer { display: flex; justify-content: space-around; padding: 15px; background: linear-gradient(to top, rgba(0,0,0,0.5), transparent); }
.control-btn { background: rgba(255,255,255,0.1); backdrop-filter: blur(10px); color: var(--primary-text); border: 1px solid rgba(255,255,255,0.2); border-radius: 15px; padding: 12px 0; cursor: pointer; transition: all 0.3s; display: flex; flex-direction: column; align-items: center; width: 90px; }
.control-btn i { font-size: 1.5em; margin-bottom: 5px; }
.control-btn span { font-size: 0.8em; font-weight: 500; }
.control-btn.active { background-color: var(--accent-blue); border-color: var(--accent-blue); transform: translateY(-5px); }

/* --- Paneles Modales --- */
.modal-panel { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0,0,0,0.7); backdrop-filter: blur(10px); z-index: 100; display: none; align-items: center; justify-content: center; }
.modal-panel.visible { display: flex; }
.panel-content { background-color: var(--secondary-bg); width: 90%; max-width: 500px; border-radius: 20px; padding: 20px; animation: scaleUp 0.3s ease-out; }
.panel-header { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid #333; padding-bottom: 15px; margin-bottom: 15px; }
.close-panel-btn { background: none; border: none; color: white; font-size: 1.2em; cursor: pointer; }
.panel-body button { background: var(--accent-blue); /* ... */ }
.panel-body input { background: #333; /* ... */ }

/* --- Animaciones --- */
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }
@keyframes slideUp { from { transform: translateY(50px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
@keyframes scaleUp { from { transform: scale(0.8); opacity: 0; } to { transform: scale(1); opacity: 1; } }

body.serenity-nudge { animation: breath 11s ease-in-out; }
@keyframes breath {
  0% { background-color: var(--primary-bg); }
  36% { background-color: var(--accent-purple); } /* Inhalar 4s */
  45% { background-color: var(--accent-purple); } /* Sostener 1s */
  100% { background-color: var(--primary-bg); } /* Exhalar 6s */
}