:root {
    --primary-color: #0d6efd; /* Bootstrap Primary */
    --secondary-color: #6c757d; /* Bootstrap Secondary */
    --success-color: #198754; /* Bootstrap Success */
    --danger-color: #dc3545; /* Bootstrap Danger */
    --light-bg: #f8f9fa; /* Bootstrap Light */
    --white-color: #fff;
    --border-color: #dee2e6;
    --border-color-dashed: #adb5bd;
    --border-radius-base: 0.375rem; /* Bootstrap default */
    --box-shadow-base: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --box-shadow-hover: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --font-family-sans-serif: "Inter", sans-serif;
    --navbar-height: 60px;
}

body {
    font-family: var(--font-family-sans-serif);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-color: var(--white-color); /* Sfondo base */
    color: #212529; /* Colore testo base */
}

/* Make the container below the navbar fill remaining vertical space */
.main-row-container {
    flex-grow: 1;
    display: flex; /* Needed for potential flex alignment within */
    overflow: hidden; /* Prevent container itself from scrolling */
}

/* Make the row fill the container */
.main-row {
    flex-grow: 1;
    margin-left: 0;
    margin-right: 0;
}

/* Stili per la sidebar dei componenti */
#components-sidebar {
    position: sticky;
    align-self: flex-start;
    height: calc(100vh - var(--navbar-height));
    overflow-y: auto;
    background-color: var(--light-bg);
    padding: 10px;
    border-right: 1px solid var(--border-color);
    box-shadow: var(--box-shadow-base);
}

/* Scrollable Main Content Area */
#main-content-area {
    height: calc(100vh - var(--navbar-height));
    overflow-y: auto;
    padding: 1.5rem;
    background-color: #e9ecef; /* Sfondo leggermente diverso per contrasto */
}

/* Stili per i componenti trascinabili nella sidebar */
.draggable-component {
    cursor: grab;
    padding: 12px 15px;
    margin-bottom: 12px;
    border: 1px solid var(--border-color);
    background-color: var(--white-color);
    border-radius: var(--border-radius-base);
    text-align: center;
    transition: background-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
    box-shadow: var(--box-shadow-base);
}

.draggable-component:hover {
    background-color: #f1f3f5;
    box-shadow: var(--box-shadow-hover);
    transform: translateY(-2px);
}

.draggable-component img {
    max-width: 100%;
    height: auto;
    pointer-events: none; /* Impedisce all'immagine di interferire col drag */
}

.navbar {
    min-height: var(--navbar-height); /* Usa variabile */
    z-index: 1030;
    box-shadow: var(--box-shadow-base); /* Ombra anche alla navbar */
}

.navbar-brand sub {
    color: var(--border-color);
}

#build-canvas {
    padding: 25px;
    min-height: calc(100vh - var(--navbar-height) - 50px);
    border: 2px dashed var(--border-color-dashed);
    background-color: var(--white-color);
    border-radius: var(--border-radius-base);
    position: relative;
    flex-grow: 1;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.1); /* Ombra interna leggera */
}

/* Stili per gli elementi rilasciati nel canvas */
.canvas-element {
    position: relative;
    padding: 15px; /* Aumentato padding */
    margin-bottom: 15px; /* Aumentato margine */
    border: 1px solid var(--border-color);
    background-color: var(--white-color); /* Sfondo bianco per contrasto */
    border-radius: var(--border-radius-base);
    cursor: pointer;
    transition: border-color 0.2s ease, box-shadow 0.2s ease; /* Migliorata transizione */
    box-shadow: var(--box-shadow-base);
}
.canvas-element.selected {
    border: 2px solid var(--primary-color);
    box-shadow: 0 0 8px rgba(13, 110, 253, 0.4); /* Ombra piu' morbida */
}

/* Stili per il placeholder durante il drag */
.drop-placeholder {
    height: 60px; /* Leggermente piu' alto */
    background-color: rgba(13, 110, 253, 0.1); /* Meno opaco */
    border: 2px dashed var(--primary-color);
    margin-bottom: 15px; /* Coerente con canvas-element */
    border-radius: var(--border-radius-base);
    transition: all 0.2s ease;
    box-shadow: inset 0 0 10px rgba(13, 110, 253, 0.1); /* Ombra interna */
}

/* Stili per rendere il testo editabile */
[contenteditable="true"] {
    cursor: text;
    border: 1px dashed transparent; /* Bordo trasparente di default */
    padding: 4px 6px; /* Padding leggermente aumentato */
    min-height: 1.5em;
    border-radius: calc(var(--border-radius-base) * 0.8); /* Radius leggermente piu' piccolo */
    transition: border-color 0.2s ease, background-color 0.2s ease;
}
[contenteditable="true"]:hover {
    border-color: var(--border-color-dashed); /* Mostra bordo su hover */
}
[contenteditable="true"]:focus {
    outline: none; /* Rimuovi outline di default */
    border: 1px solid var(--primary-color);
    background-color: #e7f1ff;
    box-shadow: 0 0 0 2px rgba(13, 110, 253, 0.25); /* Focus ring stile Bootstrap */
}

/* Stili per il modal di esportazione */
#exportHtmlModal .modal-body textarea {
    min-height: 300px;
    font-family: monospace;
}

/* Stili per i controlli dell'elemento (es. elimina) */
.element-controls {
    position: absolute;
    top: -15px; /* Mantiene posizione */
    right: 10px; /* Leggermente spostato */
    display: flex;
    gap: 5px; /* Spazio leggermente aumentato */
    background-color: rgba( 40, 40, 40, 0.8); /* Sfondo piu' scuro e meno trasparente */
    backdrop-filter: blur(3px); /* Effetto blur per modernità (supporto variabile) */
    padding: 5px 8px; /* Padding leggermente aumentato */
    border-radius: 50px; /* Forma a pillola piu' pronunciata */
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.25s ease, transform 0.25s ease; /* Transizione piu' morbida */
    transform: translateY(8px) scale(0.95); /* Inizia piu' in basso e leggermente scalato */
    z-index: 10;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2); /* Ombra per i controlli */
}

/* Style for individual control buttons */
.control-button {
    color: var(--white-color);
    border: none;
    border-radius: 50%;
    width: 26px;
    height: 26px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    line-height: 1;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.15s ease;
    padding: 0;
    background-color: transparent;
}
.control-button:hover {
    transform: scale(1.1); /* Effetto hover ingrandimento */
}
.control-button:active {
    transform: scale(0.95); /* Effetto click */
}

/* --- Add styles for drag handle --- */
.drag-handle-button {
    background-color: var(--secondary-color);
    cursor: grab;
    touch-action: none;
}
.drag-handle-button:active {
    cursor: grabbing;
}
.drag-handle-button:hover {
    background-color: #5a6268; /* Secondary piu' scuro */
}

/* Modificato per usare direttamente l'icona frecce */
.drag-handle-button i::before { /* Applica a ::before dell'icona interna */
    transition: content 0.2s ease; /* Transizione per il cambio icona */
}
.drag-handle-button:hover i::before {
    content: "\F14E"; /* Codice Unicode per bi-arrows-vertical */
}

/* Duplicate button styles */
.duplicate-button {
    background-color: var(--success-color);
}
.duplicate-button:hover {
    background-color: #146c43; /* Success piu' scuro */
}

/* Specific colors for move buttons */
.move-up-button,
.move-down-button {
    background-color: var(--primary-color);
}
.move-up-button:hover,
.move-down-button:hover {
    background-color: #0a58ca; /* Primary piu' scuro */
}

/* Specific color for delete button */
.delete-button {
    background-color: var(--danger-color);
}
.delete-button:hover {
    background-color: #b02a37; /* Danger piu' scuro */
}

.canvas-element:hover .element-controls,
.canvas-element.selected .element-controls {
    opacity: 1;
    transform: translateY(0) scale(1);
}
.canvas-element.dragging {
    opacity: 0.5;
    border: 2px dashed #0d6efd;
}
.no-gutter {
    --bs-gutter-x: 0;
}

.hover-info {
    position: absolute;
    bottom: calc(100% + 1px);
    left: 0;
    background-color: rgba(40, 40, 40, 0.9);
    backdrop-filter: blur(3px); /* Effetto blur */
    color: var(--white-color);
    padding: 6px 12px;
    border-radius: 15px 15px 0 5px;
    z-index: 1050;
    font-size: 1rem;
    white-space: nowrap;
    align-items: center;
    gap: 8px;
    opacity: 0;
}

/* Mostra l'info box su hover O se l'elemento è selezionato */
.canvas-element:hover .hover-info,
.canvas-element.selected .hover-info {
    display: flex;
    opacity: 1;
    transform: translateY(0) scale(1); /* Animazione completa */
}

.hover-info .tag-name {
    font-family: monospace;
    font-weight: bold;
}

.hover-info .edit-button {
    background: none;
    border: none;
    color: var(--white-color);
    padding: 0 3px;
    line-height: 1;
    cursor: pointer;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s ease, transform 0.15s ease;
}

.hover-info .edit-button:hover {
    color: #dee2e6; /* Grigio chiaro su hover */
    transform: scale(1.1); /* Effetto hover */
}
.hover-info .edit-button:active {
    transform: scale(0.95); /* Effetto click */
}

/* Stile per forzare la visibilita' del focus impostato via JS */
.force-focus-visible:focus {
    outline: 2px solid Highlight; /* Usa il colore di sistema per l'highlight */
    outline: -webkit-focus-ring-color auto 1px; /* Stile focus standard di Chrome/Safari */
    box-shadow: 0 0 0 0.25rem rgba(176, 42, 55, 0.25); /* Ombreggiatura simile a Bootstrap */
}

/* Effetto rotazione per icona settings modal */
button[data-bs-target="#settingsModal"] i, /* Se l'icona è un tag <i> */
button[data-bs-target="#settingsModal"] .bi-gear, /* Target più specifico per Bootstrap Icon */
button[data-bs-target="#settingsModal"] .bi-gear-fill {
    display: inline-block; /* Assicura che transform funzioni correttamente */
    transition: transform 0.3s ease-in-out;
}

button[data-bs-target="#settingsModal"]:hover i,
button[data-bs-target="#settingsModal"]:hover .bi-gear,
button[data-bs-target="#settingsModal"]:hover .bi-gear-fill {
    transform: rotate(90deg);
}