/* static/css/style.css */

/* --- 1. Design System & Variables --- */
:root {
    /* Color Palette */
    --s2s-blue: #2a600e;      /* Primary brand color for text, headers, accents */
    --s2s-orange: #b9eaa0;    /* Call-to-action color for buttons, links, highlights */
    --bg-main: #fffdf0;      /* Main background color for the body */
    --bg-card: #FFFFFF;      /* Background for cards, modals, inputs */
    --text-primary: #1A1A1A;  /* Primary text color for readability */
    --text-secondary: #6c757d;/* Muted text color for subtitles, placeholders */
    --border-color: #E0E6EB; /* Subtle borders for inputs and dividers */
    --success: #155724;      /* Green for success messages */
    --danger: #D32F2F;       /* Red for error messages and delete buttons */

    /* Typography */
    --font-primary: 'Nunito', sans-serif; /* Friendly and modern sans-serif */
    --font-display: 'Rajdhani', sans-serif; /* Techy font for logos/headings */
    --font-size-base: 16px;

    /* Spacing & Layout */
    --spacing-xs: 0.25rem; /* 4px */
    --spacing-sm: 0.5rem;  /* 8px */
    --spacing-md: 1rem;    /* 16px */
    --spacing-lg: 1.5rem;  /* 24px */
    --spacing-xl: 2.5rem;  /* 40px */
    --container-width: 1200px;
    --border-radius: 12px;
    --shadow-soft: 0 4px 12px rgba(10, 37, 64, 0.08);
    --shadow-strong: 0 8px 24px rgba(10, 37, 64, 0.15);
    --transition-fast: all 0.2s cubic-bezier(0.25, 0.8, 0.25, 1);
}


/* --- 2. Global Styles & Resets --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}
body {
    font-family: var(--font-primary);
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
.page-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}
main {
    flex-grow: 1;
}
.main-content {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-lg);
}


/* --- 3. Reusable Components --- */
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.8rem 1.5rem;
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 700;
    border: none;
    border-radius: 8px;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-fast);
    white-space: nowrap;
}
.button-primary {
    background-color: var(--s2s-blue);
    color: var(--bg-card);
}
.button-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(42, 96, 14, 0.3);
}
.button-secondary {
    background-color: var(--bg-card);
    color: var(--s2s-blue);
    border: 2px solid var(--border-color);
}
.button-secondary:hover {
    border-color: var(--s2s-blue);
    color: var(--s2s-blue);
}
.button-danger {
    background-color: var(--danger);
    color: var(--bg-card);
}
.button-danger:hover {
    background-color: #B71C1C;
    transform: translateY(-2px);
}
.form-input {
    width: 100%;
    padding: 0.8rem 1rem;
    font-family: var(--font-primary);
    font-size: 1rem;
    background-color: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    transition: var(--transition-fast);
}
.form-input:focus {
    outline: none;
    border-color: var(--s2s-blue);
    box-shadow: 0 0 0 3px rgba(185, 234, 160, 0.5);
}
.flash {
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    border-radius: 8px;
    font-weight: 600;
    border: 1px solid transparent;
}
.flash.danger {
    background-color: #f8d7da;
    color: #721c24;
    border-color: #f5c6cb;
}
.flash.success {
    background-color: #d4edda;
    color: var(--success);
    border-color: #c3e6cb;
}


/* --- 4. Site Header & Footer --- */
.site-header {
    background-color: var(--s2s-blue);
    padding: var(--spacing-md) var(--spacing-lg);
    box-shadow: var(--shadow-soft);
    position: sticky;
    top: 0;
    z-index: 1000;
    /* Add padding at the bottom to make space for the overlapping logo */
    padding-bottom: 40px;
}
.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: var(--container-width);
    margin: 0 auto;
}
.brand-logo a {
    text-decoration: none;
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--bg-main);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}
.brand-logo img {
    height: 80px;
    width: 80px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--bg-main);
    box-shadow: var(--shadow-strong);
    position: relative;
    z-index: 10;
    background-color: var(--bg-main);
}
.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}
.nav-links a {
    text-decoration: none;
    font-weight: 700;
    color: var(--s2s-orange);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 8px;
    transition: var(--transition-fast);
}
.nav-links a:hover {
    color: var(--s2s-blue);
    background-color: var(--bg-main);
}
.nav-links .button-primary {
    font-size: 0.9rem;
    padding: 0.6rem 1.2rem;
    background-color: var(--s2s-orange);
    color: var(--s2s-blue);
}
.site-footer {
    background-color: var(--s2s-blue);
    color: rgba(255, 255, 255, 0.7);
    padding: var(--spacing-xl) var(--spacing-lg);
    margin-top: var(--spacing-xl);
    text-align: center;
}
.site-footer p { margin: 0; }
.site-footer a {
    color: var(--bg-card);
    font-weight: 700;
    text-decoration: none;
}
.site-footer a:hover { text-decoration: underline; }


/* --- 5. Page: Login --- */
.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-grow: 1;
    padding: var(--spacing-lg);
}
.login-card {
    background-color: var(--bg-card);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-strong);
    padding: var(--spacing-xl);
    max-width: 420px;
    width: 100%;
    text-align: center;
    animation: fadeIn 0.5s ease-out;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}
.login-header h2 {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--s2s-blue);
    margin-bottom: var(--spacing-xs);
}
.login-header p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}
.login-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: left;
}
.form-group label {
    font-weight: 700;
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
    display: block;
}
.login-form .button { margin-top: var(--spacing-sm); }
.divider {
    display: flex;
    align-items: center;
    color: var(--border-color);
    margin: var(--spacing-lg) 0;
    font-size: 0.9rem;
    font-weight: 600;
}
.divider::before, .divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--border-color);
}
.divider::before { margin-right: 1em; }
.divider::after { margin-left: 1em; }
.google-btn { width: 100%; }
.google-btn img { width: 20px; height: 20px; }
.login-footer {
    margin-top: var(--spacing-lg);
    font-size: 0.9rem;
    color: var(--text-secondary);
}


/* --- 6. Page: Dashboard (Exact Mystery Science Replica) --- */
.dashboard-header { margin-bottom: var(--spacing-lg); }
.dashboard-header h1 {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--s2s-blue);
}
.dashboard-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
}
.book-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}
.book-card {
    display: block;
    position: relative;
    aspect-ratio: 4 / 3;
    border-radius: var(--border-radius);
    overflow: hidden;
    text-decoration: none;
    background-size: cover;
    background-color: #ffffff;
    background-position: center;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--border-color);
}
.book-card:hover {
    transform: scale(1.03);
    box-shadow: var(--shadow-strong);
}
.book-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: linear-gradient(180deg, rgba(42,96,14,0.5) 0%, rgba(42,96,14,0.05) 40%, rgba(42,96,14,0.05) 60%, rgba(42,96,14,0.7) 100%);
    opacity: 1;
    transition: opacity 0.3s ease;
}
.card-content {
    position: relative;
    z-index: 2;
    height: 100%;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    text-align: center;
    color: #FFFDF0;
}
.card-top {
    min-height: 24px;
    text-align: left;
}
.card-badge {
    display: inline-block;
    background-color: var(--s2s-orange);
    color: var(--s2s-blue);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radi


us: 6px;
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
}
.card-title {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1.2;
   /* text-shadow: 2px 2px 5px rgba(0,0,0,0.7);*/
    flex-grow: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 var(--spacing-sm);
}
.card-bottom { min-height: 24px; }
.card-meta {
    font-size: 0.85rem;
    font-weight: 600;
   /* text-shadow: 1px 1px 2px rgba(0,0,0,0.8);*/
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    color: var(--bg-card);
}
.card-meta span { font-size: 1rem; }
.empty-state {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    background-color: var(--bg-card);
    border-radius: var(--border-radius);
    border: 2px dashed var(--border-color);
}
.empty-state-icon { font-size: 4rem; }
.empty-state h2 {
    font-size: 1.5rem;
    color: var(--s2s-blue);
    margin-bottom: var(--spacing-sm);
}
.empty-state p {
    color: var(--text-secondary);
    max-width: 450px;
    margin: 0 auto;
}


/* --- 7. Page: Admin (Tabbed Redesign) --- */
.admin-container {
    background-color: var(--bg-card);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-soft);
    overflow: hidden;
}
.admin-nav {
    display: flex;
    background-color: var(--s2s-orange);
    border-bottom: 2px solid var(--border-color);
}
.nav-tab {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 700;
    color: var(--s2s-blue);
    background-color: transparent;
    border: none;
    cursor: pointer;
    transition: var(--transition-fast);
    border-bottom: 3px solid transparent;
}
.nav-tab:hover { color: var(--s2s-blue); }
.nav-tab.active {
    color: var(--s2s-blue);
    border-bottom-color: var(--s2s-blue);
}
.tab-content { padding: var(--spacing-lg); }
.tab-pane { display: none; }
.tab-pane.active {
    display: block;
    animation: fadeIn 0.4s;
}
.admin-section-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}
@media (min-width: 992px) {
    .admin-section-grid {
        grid-template-columns: 2fr 1fr;
        align-items: start;
    }
}
.admin-section-grid h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--s2s-blue);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}
.table-container { max-height: 500px; overflow-y: auto; }
.data-table { width: 100%; border-collapse: collapse; }
.data-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}
.data-table tr:last-child td { border-bottom: none; }
.item-info { display: flex; align-items: center; gap: var(--spacing-md); }
.item-thumb { width: 40px; height: 55px; object-fit: cover; border-radius: 4px; }
.item-name { font-weight: 700; }
.item-meta { font-size: 0.85rem; color: var(--text-secondary); }
.user-role { font-size: 0.85rem; padding: 3px 8px; border-radius: 6px; background-color: var(--bg-main); }
.user-role.admin { background-color: #e0f7fa; color: #00796b; }
.user-self-tag { color: var(--text-secondary); font-style: italic; }
.actions-cell { text-align: right; white-space: nowrap; }
.actions-cell .button, .actions-cell form { display: inline-block; }
.empty-cell { text-align: center; color: var(--text-secondary); padding: var(--spacing-xl) 0; }
.form-grid { display: grid; gap: var(--spacing-md); }
.full-width { width: 100%; }
.checkbox-group { display: flex; align-items: center; gap: var(--spacing-sm); }
.checkbox-group label { font-size: 0.9rem; }
.modal-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(10, 37, 64, 0.6); display: none;
    align-items: center; justify-content: center; z-index: 2000;
}
.modal-content {
    background: var(--bg-card); border-radius: var(--border-radius);
    max-width: 500px; width: 90%; box-shadow: var(--shadow-strong);
    animation: fadeIn 0.3s ease;
}
.modal-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}
.modal-header h3 { font-size: 1.2rem; color: var(--s2s-blue); }
.modal-close { background: none; border: none; font-size: 1.5rem; cursor: pointer; color: var(--text-secondary); }
.modal-body { padding: var(--spacing-lg); }
.modal-form { margin-bottom: var(--spacing-lg); padding-bottom: var(--spacing-lg); border-bottom: 1px solid var(--border-color); }
.modal-form:last-child { margin-bottom: 0; padding-bottom: 0; border-bottom: none; }
.modal-form label { font-weight: 700; font-size: 0.9rem; display: block; margin-bottom: var(--spacing-sm); }
.form-inline { display: grid; grid-template-columns: 1fr auto; gap: var(--spacing-md); align-items: end;}
.delete-section h4 { color: var(--danger); }
.delete-section p { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: var(--spacing-md); }
/* --- NEW: Checkbox List for Admin Access --- */
.checkbox-list-box {
    max-height: 200px;
    overflow-y: auto;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: var(--spacing-sm);
    background-color: #f9f9f9;
}

.checkbox-item {
    display: block; /* Make each item take its own line */
    padding: var(--spacing-sm);
    border-radius: 6px;
}

.checkbox-item:hover {
    background-color: var(--s2s-orange);
}

.checkbox-item input[type="checkbox"] {
    margin-right: var(--spacing-sm);
    /* Make the checkbox slightly larger */
    transform: scale(1.1);
}

.checkbox-item label {
    font-weight: 600;
    cursor: pointer;
}


/* --- 8. Responsive Design --- */
@media (max-width: 768px) {
    /* General Mobile Spacing */
    .main-content {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    .page-title, .dashboard-header h1 {
        font-size: 2.2rem;
    }

    /* Header Spacing */
    .header-content {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }
    .brand-logo img {
        top: 0; /* Reset logo position on mobile */
    }
    .site-header {
        padding-bottom: var(--spacing-md); /* Reset header padding on mobile */
    }

    .nav-links {
        flex-wrap: wrap;
    }
    .nav-links a {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.9rem;
    }
    .nav-links .button-primary {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }

    /* Dashboard Card Spacing */
    .book-grid {
        gap: var(--spacing-md);
    }
    .card-title {
        font-size: 1.5rem;
    }
    
    /* Admin Panel Spacing (minor fix) */
    .admin-nav {
        flex-wrap: wrap;
    }
}