/* Base styles for Blueberry Intelligence webapp */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    font-family: 'Inter', sans-serif;
    height: 100%;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
}

/* Define CSS variables for light and dark modes. */
:root {
    --header-bg: rgb(27 38 59 / 1);
    --bg-color: #f9fafb;
    --text-color: #000;
    --card-bg: #ffffff;
    --border-color: #e0e0e0;
    --link-color: #1e40af;
}

body.dark {
    --header-bg: rgb(15 23 42 / 1);
    --bg-color: #0f172a;
    --text-color: #f8fafc;
    --card-bg: #1e293b;
    --border-color: #334155;
    --link-color: #60a5fa;
}

/* Utility container for centering content */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* Header styling */
.app-header {
    background-color: var(--header-bg);
    padding: 0.5rem 0;
    color: var(--text-color);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-img {
    width: 40px;
    height: 40px;
}

.app-name {
    font-family: 'Poppins', sans-serif;
    font-size: 1.25rem;
    font-weight: 600;
}

.top-nav a {
    margin-right: 1rem;
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.top-nav a:hover {
    color: var(--link-color);
}

.theme-language {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

#language-select {
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.25rem 0.5rem;
    background-color: var(--card-bg);
    color: var(--text-color);
}

#theme-toggle {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 50%;
    background-color: var(--card-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    position: relative;
    transition: background-color 0.3s;
}

#theme-toggle::before {
    content: '';
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: var(--link-color);
}

/* Login form styling */
.login-container {
    margin: 2rem auto;
    max-width: 400px;
    padding: 2rem;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.login-container h1 {
    font-family: 'Poppins', sans-serif;
    margin-bottom: 1.5rem;
    text-align: center;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.25rem;
    font-weight: 500;
}

.form-group input, .form-group select {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-color);
    color: var(--text-color);
}

.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 4px;
    background-color: var(--link-color);
    color: #fff;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: background-color 0.2s;
}

.btn:hover {
    background-color: #3b82f6;
}

/* Dashboard styling */
.dashboard-container {
    padding: 1.5rem;
}

.modules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.module-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 1rem;
    border-radius: 8px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

.module-card h3 {
    font-family: 'Poppins', sans-serif;
    margin-bottom: 0.5rem;
}

.module-card p {
    font-size: 0.9rem;
    line-height: 1.4;
}

/* Admin table */
.table {
    width: 100%;
    border-collapse: collapse;
}

.table th, .table td {
    padding: 0.5rem;
    border-bottom: 1px solid var(--border-color);
    text-align: left;
}

.table th {
    background-color: var(--header-bg);
    color: var(--text-color);
    font-family: 'Poppins', sans-serif;
}

/* Responsive adjustments */
@media (max-width: 640px) {
    .header-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    .top-nav {
        display: flex;
        gap: 0.5rem;
        flex-wrap: wrap;
    }
    #theme-toggle {
        margin-top: 0.5rem;
    }
}