/* VARIABLES GLOBALS - Tema Fosc Professional (Estil Filmora) */
:root {
    --bg-darkest: #121212;
    --bg-dark: #1e1e24;
    --bg-panel: #26262e;
    --bg-hover: #353540;
    --accent-color: #00d8a1; /* Teal vibrant de Filmora */
    --accent-hover: #00ffbe;
    --text-main: #f0f0f0;
    --text-muted: #a0a0aa;
    --border-color: #33333d;
    --track-video: #4a6fa5;
    --track-audio: #2b7a78;
    --font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-darkest);
    color: var(--text-main);
    height: 100vh;
    overflow: hidden;
    user-select: none; /* Prevé la selecció de text a la UI */
}

/* LAYOUT PRINCIPAL */
#app-container {
    display: grid;
    grid-template-rows: 50px 1fr 300px; /* Header, Workspace, Timeline */
    height: 100vh;
}

/* HEADER */
.top-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--bg-dark);
    border-bottom: 1px solid var(--border-color);
    padding: 0 20px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.logo {
    color: var(--accent-color);
    font-size: 1.2rem;
    font-weight: bold;
    display: flex;
    gap: 8px;
    align-items: center;
}

.project-info {
    display: flex;
    flex-direction: column;
}

.project-name { font-size: 0.9rem; font-weight: 500; }
.auto-save-indicator { font-size: 0.7rem; color: var(--text-muted); }

/* BOTONS I CONTROLS */
.icon-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1rem;
    cursor: pointer;
    padding: 8px;
    border-radius: 4px;
    transition: all 0.2s;
}

.icon-btn:hover, .icon-btn.active {
    background-color: var(--bg-hover);
    color: var(--text-main);
}

.btn {
    padding: 6px 16px;
    border: none;
    border-radius: 4px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: 0.2s;
}

.btn-primary { background-color: var(--accent-color); color: #000; }
.btn-primary:hover { background-color: var(--accent-hover); }
.btn-secondary { background-color: var(--bg-panel); color: var(--text-main); border: 1px solid var(--border-color); }
.btn-secondary:hover { background-color: var(--bg-hover); }

/* WORKSPACE CENTRAL */
.workspace {
    display: grid;
    grid-template-columns: 80px 300px 1fr 280px; /* Sidebar, Library, Visor, Properties */
    height: 100%;
    overflow: hidden;
}

/* SIDEBAR ESQUERRA */
.sidebar-categories {
    background-color: var(--bg-dark);
    border-right: 1px solid var(--border-color);
    padding-top: 10px;
}

.sidebar-categories nav a {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.75rem;
    padding: 15px 0;
    gap: 5px;
    border-left: 3px solid transparent;
}

.sidebar-categories nav a:hover, .sidebar-categories nav a.active {
    color: var(--accent-color);
    background-color: var(--bg-panel);
    border-left-color: var(--accent-color);
}

.sidebar-categories nav a i { font-size: 1.2rem; }

/* PANEL DE BIBLIOTECA */
.library-panel {
    background-color: var(--bg-panel);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.library-toolbar {
    padding: 10px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    gap: 10px;
}

.search-bar {
    display: flex;
    align-items: center;
    background: var(--bg-dark);
    border-radius: 4px;
    padding: 4px 8px;
    flex: 1;
}

.search-bar input {
    background: transparent; border: none; color: white; padding-left: 8px; width: 100%; outline: none;
}

.library-content {
    flex: 1; padding: 15px; overflow-y: auto;
}

.import-area-drop {
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
    cursor: pointer;
    transition: 0.3s;
}

.import-area-drop:hover { border-color: var(--accent-color); color: var(--accent-color); }
.import-area-drop i { font-size: 2rem; margin-bottom: 10px; }

/* PANEL DEL VISOR */
.visor-panel {
    background-color: #000;
    display: flex;
    flex-direction: column;
}

.visor-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
    position: relative;
}

#video-canvas {
    background-color: #111;
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    box-shadow: 0 0 20px rgba(0,0,0,0.5);
}

.visor-controls {
    background-color: var(--bg-dark);
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
}

.time-display { font-family: monospace; font-size: 0.9rem; color: var(--accent-color); }
.quality-select { background: var(--bg-panel); color: white; border: 1px solid var(--border-color); border-radius: 4px; padding: 2px 5px;}

/* PANEL DE PROPIETATS */
.properties-panel {
    background-color: var(--bg-panel);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.panel-header {
    padding: 15px; border-bottom: 1px solid var(--border-color); background: var(--bg-dark);
}

.prop-group {
    border-bottom: 1px solid var(--border-color);
}

.prop-group-header {
    padding: 10px 15px;
    display: flex;
    justify-content: space-between;
    cursor: pointer;
    background: var(--bg-dark);
    font-size: 0.9rem;
}

.prop-body { padding: 15px; }

.control-row {
    display: flex; align-items: center; gap: 10px; margin-bottom: 10px; font-size: 0.8rem;
}

.control-row input[type="range"] { flex: 1; accent-color: var(--accent-color); }
.num-input { width: 50px; background: var(--bg-dark); border: 1px solid var(--border-color); color: white; padding: 3px; text-align: center; border-radius: 3px;}

/* TOGGLE SWITCH (Estil iOS/Filmora) */
.switch { position: relative; display: inline-block; width: 34px; height: 18px; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: #ccc; transition: .4s; border-radius: 34px; }
.slider:before { position: absolute; content: ""; height: 14px; width: 14px; left: 2px; bottom: 2px; background-color: white; transition: .4s; border-radius: 50%; }
input:checked + .slider { background-color: var(--accent-color); }
input:checked + .slider:before { transform: translateX(16px); }

/* TIMELINE */
.timeline-area {
    background-color: var(--bg-dark);
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.timeline-toolbar {
    height: 35px;
    background-color: var(--bg-panel);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 15px;
}

.tools-left, .tools-right { display: flex; align-items: center; gap: 5px; }
.divider { width: 1px; height: 20px; background-color: var(--border-color); margin: 0 10px; }

.timeline-tracks-container {
    flex: 1;
    overflow: auto;
    position: relative;
    background: #1a1a1f;
}

.timeline-ruler {
    height: 25px;
    background: var(--bg-dark);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 10;
}

.tracks-wrapper { padding: 10px 0; }

.track {
    display: flex;
    height: 60px;
    margin-bottom: 2px;
    background: rgba(255,255,255,0.02);
    border-bottom: 1px solid var(--border-color);
}

.track-header {
    width: 120px;
    background: var(--bg-panel);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 0 10px;
    position: sticky;
    left: 0;
    z-index: 5;
}

.track-name { font-size: 0.8rem; font-weight: bold; display: flex; gap: 5px; align-items: center;}
.track-controls { display: flex; gap: 10px; font-size: 0.8rem; color: var(--text-muted); margin-top: 5px;}

.track-content {
    flex: 1;
    position: relative;
    background-image: linear-gradient(to right, rgba(255,255,255,0.05) 1px, transparent 1px);
    background-size: 50px 100%;
}

/* CLIPS DE LA TIMELINE */
.clip {
    position: absolute;
    height: 50px;
    top: 5px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    padding: 0 10px;
    font-size: 0.75rem;
    overflow: hidden;
    cursor: pointer;
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.2);
}

.clip:hover { filter: brightness(1.2); }
.clip:active { opacity: 0.8; }

.video-clip { background-color: var(--track-video); }
.audio-clip { background-color: var(--track-audio); }

/* PLAYHEAD */
.playhead {
    position: absolute;
    top: 0;
    left: 150px; /* Simulació de posició */
    bottom: 0;
    width: 2px;
    background-color: #ff3366;
    z-index: 20;
    pointer-events: none;
}

.playhead-head {
    width: 0;
    height: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-top: 10px solid #ff3366;
    position: absolute;
    top: 0;
    left: -5px;
}

/* MODAL EXPORTACIÓ */
.modal-overlay { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.8); display: flex; justify-content: center; align-items: center; z-index: 100;}
.modal { background: var(--bg-panel); padding: 30px; border-radius: 8px; width: 400px; border: 1px solid var(--border-color);}
.modal h2 { margin-bottom: 20px; font-weight: 500;}
.export-options label { display: block; margin-bottom: 15px; font-size: 0.9rem;}
.export-options select { width: 100%; margin-top: 5px; padding: 8px; background: var(--bg-dark); color: white; border: 1px solid var(--border-color); border-radius: 4px;}
.modal-actions { margin-top: 25px; display: flex; justify-content: flex-end; gap: 10px;}