/* Base Styles */
:root {
    --primary-color: #4285F4;
    --secondary-color: #34A853;
    --danger-color: #EA4335;
    --warning-color: #FBBC05;
    --dark-color: #202124;
    --light-color: #f8f9fa;
    --gray-color: #5f6368;
}

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

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: #f5f5f5;
}

.container {
    display: grid;
    grid-template-areas:
        "header header"
        "nav main";
    grid-template-columns: 250px 1fr;
    grid-template-rows: auto 1fr;
    min-height: 100vh;
}

header {
    grid-area: header;
    background-color: white;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

header h1 {
    color: var(--primary-color);
    font-size: 1.5rem;
}

header h1 i {
    margin-right: 10px;
}

.auth-status {
    display: flex;
    align-items: center;
    gap: 15px;
}

#userEmail {
    color: var(--gray-color);
    font-size: 0.9rem;
}

#authButton {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
}

#authButton:hover {
    background-color: #3367d6;
}

nav {
    grid-area: nav;
    background-color: white;
    border-right: 1px solid #e0e0e0;
    padding: 1rem 0;
}

nav ul {
    list-style: none;
}

nav li {
    padding: 0.75rem 2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--gray-color);
}

nav li:hover {
    background-color: #f1f3f4;
}

nav li.active {
    color: var(--primary-color);
    background-color: #e8f0fe;
    border-left: 3px solid var(--primary-color);
}

nav li i {
    width: 20px;
    text-align: center;
}

main {
    grid-area: main;
    padding: 2rem;
    background-color: white;
    overflow-y: auto;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

h2 {
    margin-bottom: 1.5rem;
    color: var(--dark-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

h2 i {
    color: var(--primary-color);
}

/* Dashboard Styles */
.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background-color: white;
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
    border-top: 4px solid var(--primary-color);
}

.stat-card h3 {
    color: var(--gray-color);
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.stat-card p {
    font-size: 2rem;
    font-weight: bold;
    color: var(--dark-color);
}

.recent-activity {
    background-color: white;
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.recent-activity h3 {
    margin-bottom: 1rem;
    color: var(--gray-color);
    font-size: 1.1rem;
}

#activityLog {
    list-style: none;
}

#activityLog li {
    padding: 0.75rem 0;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
}

#activityLog li:last-child {
    border-bottom: none;
}

/* Form Styles */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--gray-color);
}

.form-group input[type="text"],
.form-group input[type="url"],
.form-group input[type="datetime-local"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.radio-group {
    display: flex;
    gap: 1.5rem;
    margin-top: 0.5rem;
}

.radio-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: normal;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s;
}

.btn-primary:hover {
    background-color: #3367d6;
}

.btn-secondary {
    background-color: white;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-secondary:hover {
    background-color: #e8f0fe;
}

/* Campaign List Styles */
.campaign-filters {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.campaign-filters input,
.campaign-filters select {
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.campaign-filters input {
    flex: 1;
}

.campaign-list {
    display: grid;
    gap: 1rem;
}

.campaign-item {
    background-color: white;
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
    border-left: 4px solid var(--primary-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.campaign-item.scheduled {
    border-left-color: var(--warning-color);
}

.campaign-item.sent {
    border-left-color: var(--secondary-color);
}

.campaign-item h3 {
    margin-bottom: 0.5rem;
}

.campaign-item p {
    color: var(--gray-color);
    margin-bottom: 0.5rem;
}

.campaign-item .campaign-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.9rem;
    color: var(--gray-color);
}

.campaign-item .campaign-actions {
    display: flex;
    gap: 0.5rem;
}

.campaign-item .campaign-actions button {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--gray-color);
    font-size: 1rem;
}

.campaign-item .campaign-actions button:hover {
    color: var(--primary-color);
}

/* Settings Styles */
.settings-section {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #eee;
}

.settings-section h3 {
    margin-bottom: 1rem;
    color: var(--gray-color);
}

#firebaseConfig {
    background-color: #f5f5f5;
    padding: 1rem;
    border-radius: 4px;
    overflow-x: auto;
    font-family: monospace;
    white-space: pre-wrap;
}

/* Responsive Styles */
@media (max-width: 768px) {
    .container {
        grid-template-areas:
            "header"
            "nav"
            "main";
        grid-template-columns: 1fr;
    }
    
    nav {
        border-right: none;
        border-bottom: 1px solid #e0e0e0;
    }
    
    nav ul {
        display: flex;
        overflow-x: auto;
    }
    
    nav li {
        white-space: nowrap;
        border-left: none;
        border-bottom: 3px solid transparent;
    }
    
    nav li.active {
        border-left: none;
        border-bottom: 3px solid var(--primary-color);
    }
    
    .stats-container {
        grid-template-columns: 1fr;
    }
}