/* 
 * Core Design System 
 * Aesthetic: Writer / Author / Clean / Minimal
 */

:root {
    /* Light Mode (Cream / Warm) */
    --bg-color: #FAFAFA;
    --surface-color: #FFFFFF;
    --text-primary: #2C2C2C;
    --text-secondary: #5F6368;
    --border-color: #E5E5E5;
    --primary-color: #1A1A1A;
    --primary-hover: #333333;
    --accent-color: #8B5E3C;
    /* Warm brown/sepia tone */
    --danger-color: #D32F2F;
    --danger-bg: #FDE0E0;

    /* Typography */
    --font-ui: 'Inter', system-ui, sans-serif;
    --font-serif: 'Lora', Georgia, serif;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.05), 0 1px 3px rgba(0, 0, 0, 0.1);

    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
}

[data-theme="dark"] {
    /* Dark Mode (Deep Slate / Reading focused) */
    --bg-color: #121212;
    --surface-color: #1E1E1E;
    --text-primary: #E0E0E0;
    --text-secondary: #AAAAAA;
    --border-color: #333333;
    --primary-color: #FFFFFF;
    --primary-hover: #CCCCCC;
    --accent-color: #D4A373;
    --danger-color: #FF5252;
    --danger-bg: #3B1C1C;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-ui);
    line-height: 1.6;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-color);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-serif);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 0.5em;
    color: var(--text-primary);
}

.serif-title {
    font-family: var(--font-serif);
}

.text-center {
    text-align: center;
}

.text-muted {
    color: var(--text-secondary);
}

.mb-4 {
    margin-bottom: 1.5rem;
}

.mt-4 {
    margin-top: 1.5rem;
}

/* Form Controls */
.form-group {
    margin-bottom: 1.25rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: var(--font-ui);
    font-size: 1rem;
    color: var(--text-primary);
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(139, 94, 60, 0.1);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-family: var(--font-ui);
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--bg-color);
    /* Inverts color for contrast */
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    color: var(--bg-color);
}

.btn-block {
    display: block;
    width: 100%;
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.alert-danger {
    background-color: var(--danger-bg);
    color: var(--danger-color);
    border: 1px solid rgba(211, 47, 47, 0.2);
}

/* Layouts: Login Page */
.login-bg {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background-color: var(--bg-color);
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 1rem;
}

.login-card {
    background-color: var(--surface-color);
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

/* Layouts: Admin General */
.admin-layout {
    display: flex;
    min-height: 100vh;
}

.admin-sidebar {
    width: 300px;
    background-color: var(--surface-color);
    border-right: 1px solid var(--border-color);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
}

.admin-sidebar .brand {
    font-size: 1.5rem;
    font-family: var(--font-serif);
    font-weight: 600;
    margin-bottom: 2rem;
    display: block;
    color: var(--text-primary);
}

.admin-nav {
    list-style: none;
    flex: 1;
}

.admin-nav li {
    margin-bottom: 0.5rem;
}

.admin-nav a {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    font-weight: 500;
}

.admin-nav a:hover,
.admin-nav a.active {
    background-color: var(--bg-color);
    color: var(--text-primary);
}

.admin-content {
    flex: 1;
    padding: 2.5rem;
    overflow-y: auto;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

/* Content styles */
.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.stat-card {
    background-color: var(--surface-color);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.stat-card h3 {
    font-family: var(--font-ui);
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.stat-card .value {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Responsive Media Queries */
@media (max-width: 768px) {

    /* Admin Layout Adjustments */
    .admin-layout {
        flex-direction: column;
    }

    .admin-sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding: 1rem;
    }

    .admin-sidebar .brand {
        margin-bottom: 1rem;
        text-align: center;
    }

    .admin-nav {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.5rem;
    }

    .admin-nav li {
        margin-bottom: 0;
    }

    .admin-nav a {
        padding: 0.5rem 0.75rem;
        font-size: 0.85rem;
    }

    .admin-sidebar>div:last-child {
        margin-top: 1rem;
        display: flex;
        gap: 0.5rem;
    }

    .admin-sidebar>div:last-child .btn {
        margin-bottom: 0 !important;
        flex: 1;
        padding: 0.5rem;
        font-size: 0.85rem;
    }

    .admin-content {
        padding: 1rem;
    }

    .topbar {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
        margin-bottom: 1.5rem;
        padding-bottom: 1rem;
    }

    /* Card & List Adjustments */
    .card form>div[style*="display: flex"] {
        flex-direction: column !important;
        gap: 1rem !important;
    }

    .card {
        padding: 1rem !important;
    }

    table {
        display: block;
        width: 100%;
        overflow-x: auto;
    }

    form[action*="destroy"] .btn {
        margin-top: 0.25rem;
    }
}