/* --- PraiseBook Manager - CSS --- */
:root {
    /* TEMA OSCURO (Por defecto) */
    --bg-main: #121212;
    --bg-panels: #1a1a1a;
    --bg-header: #1a1a1a; /* Header top oscuro */
    --primary: #00bcd4; /* CIAN UI */
    --primary-dark: #008ba3;
    --secondary: #333;
    --secondary-hover: #444;
    --text-dark: #ffffff;
    --text-muted: #888888;
    --border-color: #333333;
    --input-bg: #222222;
    
    /* Estados */
    --status-red: #f44336;
    --status-connected: #00bcd4; /* Cian para conectado */
    --header-height: 70px;
    
    /* Variables exactas del Visor de la App (Oscuro) */
    --preview-bg: #000000;
    --preview-text: #ffffff;
    --preview-chord: #00ffff; /* Cian puro brillante para acordes */
    --preview-header: #888888;
}

body.tema-claro {
    /* TEMA CLARO */
    --bg-main: #e5e5ea;
    --bg-panels: #ffffff;
    --bg-header: #f2f2f7; /* Header top gris suave (pedido) */
    --primary: #00bcd4; 
    --primary-dark: #008ba3;
    --secondary: #f2f2f7;
    --secondary-hover: #e0e0e0;
    --text-dark: #121212;
    --text-muted: #666666;
    --border-color: #cccccc;
    --input-bg: #ffffff;
    
    /* Estados */
    --status-connected: #00bcd4; /* Cian para conectado */
    
    /* Variables exactas del Visor de la App (Claro) */
    --preview-bg: #ffffff; /* Fondo blanco puro (pedido) */
    --preview-text: #121212;
    --preview-chord: #008ba3; /* Cian un poco más oscuro para que se lea bien en blanco */
    --preview-header: #888888;
}

/* --- BARRAS DE DESPLAZAMIENTO DINÁMICAS (SCROLLBARS) --- */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-main); }
::-webkit-scrollbar-thumb { background: var(--secondary-hover); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }

body { background-color: var(--bg-main); color: var(--text-dark); height: 100vh; display: flex; flex-direction: column; overflow: hidden; transition: background 0.3s, color 0.3s; }

/* --- Header & Conexión --- */
header {
    background: var(--bg-header); /* Hereda oscuro o gris suave */
    color: var(--text-dark);
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
    transition: background 0.3s;
}

.header-left { display: flex; align-items: baseline; gap: 10px; }
.header-left h1 { font-size: 24px; font-weight: 700; color: var(--primary); }
.header-left .version { font-size: 14px; color: var(--text-muted); font-weight: 500; }

.btn-tema {
    background: var(--secondary);
    color: var(--text-dark);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: 600;
    font-size: 12px;
    display: flex;
    align-items: center;
    transition: 0.2s;
    margin-left: 15px;
}
.btn-tema:hover { background: var(--secondary-hover); }

.connection-bar { display: flex; align-items: center; gap: 15px; background: rgba(0,0,0,0.05); padding: 5px 15px; border-radius: 20px; }

#pin-code { padding: 8px 15px; border: 1px solid var(--border-color); border-radius: 6px; width: 120px; text-align: center; font-size: 16px; font-weight: bold; letter-spacing: 2px; background: var(--input-bg); color: var(--text-dark); outline: none; }
#pin-code:focus { border-color: var(--primary); }

#pin-input-area, #connection-info-area { display: flex; gap: 10px; align-items: center; }

header button { padding: 8px 15px; border-radius: 4px; border: none; cursor: pointer; font-size: 14px; font-weight: 600; transition: 0.2s; }

/* Botones de conexión actualizados a CIAN */
#btn-connect { background: var(--status-connected); color: #000; }
#btn-connect:hover { background: var(--primary-dark); color: #fff; }
#btn-disconnect { background: var(--status-red); color: #fff; }
#btn-disconnect:hover { background: #d32f2f; }

#connection-status { font-size: 14px; font-weight: 600; display: flex; align-items: center; gap: 5px; }
#connection-status::before { content: ""; display: inline-block; width: 10px; height: 10px; border-radius: 50%; }

.status-disconnected::before { background: var(--status-red); }
.status-neutral::before { background: var(--text-muted); }

/* Indicador de conectado a CIAN con un leve brillo */
.status-connected { color: var(--status-connected); }
.status-connected::before { 
    background: var(--status-connected); 
    box-shadow: 0 0 8px var(--status-connected);
}

/* --- Layout Principal --- */
main { flex: 1; display: flex; overflow: hidden; height: calc(100vh - var(--header-height)); }
.layout-three-columns { display: flex; width: 100%; }

.col-header { padding: 15px; border-bottom: 1px solid var(--border-color); display: flex; justify-content: space-between; align-items: center; height: 60px; background: var(--bg-panels); }
.col-header h2 { font-size: 16px; color: var(--text-dark); font-weight: 600; }
.col-header button { padding: 5px 12px; border-radius: 4px; border: 1px solid var(--primary); background: transparent; color: var(--primary); font-size: 18px; cursor: pointer; font-weight: bold; transition: 0.2s; }
.col-header button:hover { background: var(--primary); color: #000; }

/* --- COL 1: Canciones --- */
.col-songs { flex: 0 0 250px; background: var(--bg-panels); border-right: 1px solid var(--border-color); display: flex; flex-direction: column; }
.search-box { padding: 10px; border-bottom: 1px solid var(--border-color); background: var(--bg-panels); }
#song-search { width: 100%; padding: 8px; border: 1px solid var(--border-color); border-radius: 4px; font-size: 14px; background: var(--input-bg); color: var(--text-dark); outline: none; }
#song-search:focus { border-color: var(--primary); }

.song-list { flex: 1; overflow-y: auto; }
.song-item { padding: 12px 15px; border-bottom: 1px solid var(--border-color); cursor: pointer; font-size: 14px; color: var(--text-muted); transition: background 0.2s; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.song-item:hover { background: var(--secondary); color: var(--primary); }
.song-item.active { background: color-mix(in srgb, var(--primary) 15%, transparent); border-left: 4px solid var(--primary); color: var(--text-dark); font-weight: 600; }

/* --- COL 2: Editor --- */
.col-editor { flex: 1; background: var(--bg-main); display: flex; flex-direction: column; padding: 10px; }

.editor-fields { background: var(--bg-panels); padding: 15px; display: flex; gap: 10px; border-radius: 4px 4px 0 0; }
.editor-fields input { flex: 1; padding: 10px; border: 1px solid var(--border-color); border-radius: 4px; font-size: 16px; background: var(--input-bg); color: var(--text-dark); outline: none; }
#editor-title { font-weight: 600; font-size: 18px; }

.editor-fields-row { background: var(--bg-panels); padding: 0 15px 15px 15px; border-bottom: 1px solid var(--border-color); display: flex; gap: 10px; }
.editor-fields-row input { flex: 1; padding: 10px; border: 1px solid var(--border-color); border-radius: 4px; font-size: 14px; background: var(--input-bg); color: var(--text-dark); outline: none; text-align: center; }

.editor-fields input:focus, .editor-fields-row input:focus { border-color: var(--primary); }

.editor-toolbar { background: var(--bg-panels); padding: 10px 15px; display: flex; gap: 10px; border-bottom: 1px solid var(--border-color); }
.editor-toolbar button { padding: 8px 12px; border: 1px solid var(--border-color); background: var(--secondary); color: var(--text-dark); border-radius: 4px; cursor: pointer; font-size: 13px; transition: all 0.2s; font-weight: 600; }
.editor-toolbar .spacer { flex: 1; }
.editor-toolbar .btn-primary { background: var(--primary); color: #000; border-color: var(--primary); }
.editor-toolbar .btn-primary:hover { background: var(--primary-dark); color: #fff; }
.editor-toolbar .btn-secondary:hover { background: #ffebee; color: var(--status-red); border-color: #ffcdd2; }

#editor-content { flex: 1; width: 100%; padding: 20px; border: none; resize: none; font-family: 'Courier New', Courier, monospace; font-size: 16px; line-height: 1.5; color: var(--text-dark); outline: none; border-radius: 0 0 4px 4px; background: var(--input-bg); white-space: pre; overflow-x: auto; }

/* --- COL 3: Visualizador (40% PARA DARLE MÁS ESPACIO AL EDITOR) --- */
.col-preview { flex: 0 0 40%; background: var(--preview-bg); border-left: 1px solid var(--border-color); display: flex; flex-direction: column; transition: background 0.3s; }
.visualizer-container { flex: 1; padding: 20px; background: var(--preview-bg); overflow-y: auto; display: flex; justify-content: center; align-items: flex-start; }

/* CENTRAMOS EL CONTENIDO Y LE DAMOS FORMATO DE COLUMNA */
.preview-display { 
    width: 100%; max-width: 800px; height: auto; 
    color: var(--preview-text); font-size: 16px; 
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center; /* Esto centra todo como en la app móvil */
}

/* REDUCIMOS LOS MÁRGENES (QUITAMOS ESPACIO EXTRA) */
.preview-display h1 { font-size: 24px; font-weight: 700; color: var(--preview-text); margin-bottom: 2px; text-align: center; }
.preview-display h2 { font-size: 16px; font-weight: 400; color: var(--preview-header); margin-bottom: 15px; text-align: center; } /* De 30px a 15px */

.linea-sincronizada { display: flex; flex-wrap: wrap; margin-bottom: 2px; align-items: flex-end; } /* De 5px a 2px */
.chunk-box { display: flex; flex-direction: column; text-align: left; margin-right: 0px; }
.chunk-chord-empty { min-height: 1.2em; display: inline-block; }
.chunk-lyric { white-space: pre; color: var(--preview-text); line-height: 1.2; font-weight: 500; }
.chord { color: var(--preview-chord); font-weight: bold; line-height: 1.2; min-height: 1.2em; padding-right: 4px; }
.linea-letra-normal { color: var(--preview-text); white-space: pre-wrap; margin-bottom: 2px; min-height: 1.2em; } /* De 5px a 2px */
.linea-acorde { margin-bottom: 2px; min-height: 1.2em; } /* De 5px a 2px */
.bloque-seccion-general { margin-top: 10px; margin-bottom: 2px; } /* Menos espacio arriba y abajo */
.linea-encabezado-txt { color: var(--preview-header); font-weight: 800; }
.empty-preview { text-align: center; color: var(--text-muted); margin-top: 20%; font-size: 16px; }