@import url('https://fonts.googleapis.com/css2?family=Lato:wght@400;700&display=swap');

:root {
    --bg-color: #f4f7f9;
    --text-color: #333;
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --card-bg-color: #ffffff;
    --navbar-bg-color: #343a40;
    --navbar-text-color: #f8f9fa;
    --border-color: #dee2e6;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
    --bg-color: #1a1a1a;
    --text-color: #f8f9fa;
    --primary-color: #007bff;
    --secondary-color: #adb5bd;
    --card-bg-color: #2c2c2c;
    --navbar-bg-color: #111;
    --navbar-text-color: #f8f9fa;
    --border-color: #444;
    --shadow-color: rgba(255, 255, 255, 0.05);
}

body {
    font-family: 'Lato', sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
}

main {
    padding: 20px;
}

label {
    display: block;
    margin-bottom: 5px;
}

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 8px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-color);
    color: var(--text-color);
    border-radius: 3px;
    box-sizing: border-box;
}

button {
    width: 100%;
    padding: 10px;
    background-color: var(--primary-color);
    color: var(--navbar-text-color);
    border: none;
    border-radius: 3px;
    cursor: pointer;
    transition: filter 0.2s;
}

button:hover {
    filter: brightness(1.1);
}

/* --- Stili Navbar Custom --- */
.navbar {
    background-color: var(--navbar-bg-color) !important;
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
}

.navbar .navbar-brand,
.navbar .nav-link,
.navbar .nav-link.dropdown-toggle,
#themeSwitchLabel {
    color: var(--navbar-text-color);
}

.navbar .nav-link:hover {
    opacity: 0.8;
}

/* Fix per l'icona del toggler che potrebbe non essere visibile */
[data-theme="light"] .navbar-toggler-icon {
    filter: invert(1) grayscale(100) brightness(200%);
}

[data-theme="dark"] .navbar-toggler-icon {
    filter: none; /* L'icona di default è bianca e va bene su sfondi scuri */
}

.navbar .dropdown-menu a {
    color: var(--text-color);
}

/* Stili custom aggiuntivi per Bootstrap */
.dropdown-menu[data-bs-theme="dark"] {
    --bs-dropdown-bg: var(--card-bg-color);
    --bs-dropdown-link-color: var(--text-color);
    --bs-dropdown-link-hover-bg: var(--bg-color);
}

.form-switch .form-check-input {
    cursor: pointer;
}

#themeSwitchLabel {
    width: 20px; /* Per non far spostare il layout quando cambia l'icona */
    text-align: center;
}

/* Stili custom per le card dei libri */
.book-card {
    transition: transform 0.2s, box-shadow 0.2s;
}
.book-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px var(--shadow-color);
}
.book-card .card-img-top {
    aspect-ratio: 9 / 16;
    object-fit: cover;
}
.book-card .book-card-placeholder {
    aspect-ratio: 9 / 16;
}

/* --- Stili Layout Lettore --- */
.reader-container {
    display: grid;
    grid-template-columns: 1fr 3fr 1fr;
    gap: 20px;
    max-width: 1400px;
    margin: 0 auto;
}

.reader-left-col, .reader-right-col {
    padding: 20px;
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 5px;
}

.reader-content {
    background-color: var(--card-bg-color);
    padding: 20px;
    line-height: 1.6;
    border: 1px solid var(--border-color);
    border-radius: 5px;
}

.reader-right-col {
    position: relative;
}

.line-wrapper:hover {
    background-color: var(--bg-color);
}

.bookmark-btn {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background-color: var(--card-bg-color);
    cursor: pointer;
    font-size: 16px;
    line-height: 22px;
    text-align: center;
    padding: 0;
}

.summary-category {
    margin-bottom: 10px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
}

.summary-category summary {
    padding: 10px;
    font-weight: bold;
    cursor: pointer;
    background-color: var(--bg-color);
}

.summary-item {
    padding: 10px;
    border-top: 1px solid var(--border-color);
}