:root { 
    --bg-body: #fafafa; 
    --bg-card: #ffffff; 
    --text-main: #202124; 
    --text-soft: #80868b; 
    --border-color: #f1f3f4; 
    --accent-color: #1a73e8; 
    --input-bg: #f1f3f4; 
}

body.dark-mode { 
    --bg-body: #121212; 
    --bg-card: #1e1e1e; 
    --text-main: #e8eaed; 
    --text-soft: #9aa0a6; 
    --border-color: #3c4043; 
    --accent-color: #8ab4f8; 
    --input-bg: #2d2e30; 
}

body { 
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; 
    background: var(--bg-body); 
    color: var(--text-main); 
    max-width: 1200px; 
    margin: 0 auto; 
    padding: 20px; 
    transition: background 0.3s, color 0.3s; 
}

.header { display: flex; justify-content: space-between; align-items: center; padding: 20px 0 40px 0; margin-bottom: 0; }
.header h1 { font-size: 1.5em; font-weight: 600; margin: 0; display: flex; align-items: center; gap: 10px; }

input[type="text"], select { width: 100%; box-sizing: border-box; padding: 15px; border: 1px solid transparent; border-radius: 8px; background: var(--input-bg); color: var(--text-main); font-family: inherit; font-size: 1em; outline: none; transition: 0.2s; }
input[type="text"]:focus { background: var(--bg-card); border-color: var(--accent-color); box-shadow: 0 2px 10px rgba(0,0,0,0.05); }

.btn-principal { background: var(--text-main); color: var(--bg-card); border: none; cursor: pointer; padding: 12px 20px; border-radius: 8px; font-size: 1em; font-weight: 500; transition: 0.2s; display: flex; align-items: center; justify-content: center; gap: 8px;}
.btn-principal:hover { opacity: 0.8; }
.btn-icon { background: none; border: none; color: var(--text-soft); font-size: 1.2em; cursor: pointer; padding: 10px; border-radius: 50%; transition: 0.2s; }
.btn-icon:hover { background: var(--input-bg); color: var(--text-main); }

.panneau-controle { background: var(--bg-card); padding: 25px; border-radius: 16px; margin-bottom: 30px; border: 1px solid var(--border-color); transition: all 0.3s ease; }
.panneau-controle.drag-active { border: 2px dashed var(--accent-color); background-color: rgba(26, 115, 232, 0.05); transform: scale(1.01); }

#conteneur-notes { display: grid; grid-template-columns: 1fr; gap: 20px; margin-top: 20px; align-items: start; }
@media (min-width: 768px) { #conteneur-notes { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { #conteneur-notes { grid-template-columns: repeat(3, 1fr); } }

.note { background: var(--bg-card); padding: 25px; border-radius: 16px; border: 1px solid var(--border-color); position: relative; overflow: hidden; box-sizing: border-box; transition: box-shadow 0.2s ease, border-color 0.2s ease; }
.note:hover { box-shadow: 0 8px 24px rgba(0,0,0,0.08); border-color: transparent; }
.note.is-pinned { border: 1px solid var(--accent-color); }

.actions-note { position: absolute; top: 15px; right: 15px; display: flex; gap: 5px; opacity: 0; transition: opacity 0.2s; background: var(--bg-card); padding-left: 10px; border-radius: 20px; z-index: 10;}
.note:hover .actions-note { opacity: 1; }
/* Sur mobile, on affiche toujours les actions car il n'y a pas de survol (hover) */
@media (max-width: 768px) {
    .actions-note { opacity: 1; position: relative; top: 0; right: 0; justify-content: flex-start; margin-bottom: 15px; padding-left: 0; }
}

.btn-action { width: 32px; height: 32px; border: none; cursor: pointer; background: transparent; color: var(--text-soft); border-radius: 50%; display: flex; align-items: center; justify-content: center; transition: 0.2s; }
.btn-action:hover { background: var(--input-bg); color: var(--text-main); }
.btn-suppr:hover { color: #ea4335; background: rgba(234, 67, 53, 0.1); }
.btn-pin.active { color: #fbbc04; opacity: 1; }

.note h3 { font-size: 1.1em; font-weight: 600; margin: 0 0 10px 0; padding-right: 80px;}

.nav-tabs { display: flex; gap: 15px; margin-bottom: 30px; }
.tab { cursor: pointer; padding: 10px 20px; border-radius: 8px; font-weight: 500; color: var(--text-soft); transition: 0.2s; border: 1px solid transparent; }
.tab:hover { background: var(--input-bg); }
.tab.active { background: var(--text-main); color: var(--bg-card); }

.quick-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px;}
.tag-chip, .tag { padding: 6px 14px; border-radius: 20px; background: var(--input-bg); color: var(--text-soft); font-size: 0.85em; font-weight: 500; cursor: pointer; border: none; transition: all 0.2s; display: inline-flex; align-items: center; margin-right: 6px; margin-bottom: 6px; }
.tag-chip:hover, .tag:hover { background: var(--border-color); color: var(--text-main); }
.tag-chip.active { background: var(--accent-color); color: var(--bg-card); box-shadow: 0 2px 5px rgba(26, 115, 232, 0.3); }

.tag-removable:hover { background: #ea4335; color: white; }
.tag-removable i { margin-left: 6px; font-size: 1.1em; opacity: 0.7; }
.tag-removable:hover i { opacity: 1; }

#editor-container { height: auto; min-height: 150px; margin-bottom: 15px; background: transparent; color: var(--text-main); font-size: 1.1em; font-family: inherit; border: none; border-top: 1px solid var(--border-color); padding-top: 10px;}
.ql-toolbar { border: none !important; padding-left: 0 !important; }
.ql-container { border: none !important; font-family: inherit !important; font-size: 1.1em !important; }
.ql-editor { padding-left: 0; padding-right: 0; }

.contenu-html { line-height: 1.6; margin-top: 15px; font-size: 1em; color: var(--text-main); transition: max-height 0.3s ease; }
.contenu-html p { margin-top: 0; }
.note-content-wrapper { position: relative; }
.note-content-collapsed { max-height: 200px; overflow: hidden; }
.note-fade-out { position: absolute; bottom: 0; left: 0; width: 100%; height: 80px; background: linear-gradient(transparent, var(--bg-card)); pointer-events: none; }
.btn-lire-suite { width: 100%; text-align: left; background: none; border: none; color: var(--accent-color); cursor: pointer; padding: 15px 0 0 0; font-weight: 500; font-size: 0.9em; transition: 0.2s;}

.fichiers-liste { display: flex; flex-direction: column; gap: 5px; margin-top: 15px; }
.fichier-item { display: flex; justify-content: space-between; align-items: center; padding: 8px 0; border-top: 1px solid var(--border-color); font-size: 0.9em; }
.fichier-lien { color: var(--text-soft); text-decoration: none; display: flex; align-items: center; gap: 10px; word-break: break-all; transition: 0.2s; }
.fichier-lien:hover { color: var(--accent-color); }
.btn-file-del { background: none; border: none; color: var(--text-soft); cursor: pointer; font-size: 1.1em; transition: 0.2s; }
.btn-file-del:hover { color: #ea4335; }
#input-fichiers { display: none; }

/* MODE FOCUS (Conservation d'une option plein écran manuelle) */
body.zen-mode { background: var(--bg-card); overflow: hidden;}
body.zen-mode .header, body.zen-mode .nav-tabs, body.zen-mode #barre-corbeille, body.zen-mode .panneau-controle:not(#form-container), body.zen-mode #conteneur-notes, body.zen-mode #btn-voir-plus { display: none !important; }
body.zen-mode #form-container { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; z-index: 99999; margin: 0; border-radius: 0; padding: 5vw 15vw; box-sizing: border-box; box-shadow: none; display: flex; flex-direction: column; max-width: 100%; border: none; }
@media (max-width: 768px) { body.zen-mode #form-container { padding: 20px; } }
body.zen-mode #form-note { display: flex; flex-direction: column; flex: 1; height: 100%; }
body.zen-mode #editor-container { flex-grow: 1; height: auto; font-size: 1.3em; }
body.zen-mode input[type="text"] { border-radius: 0; font-size: 1.5em; padding-left: 0; padding-right: 0; background: transparent; }