:root {
    --primary-color: #ff6b6b;
    --primary-dark: #ee5253;
    --secondary-color: #4b7bec;
    --text-color: #333333;
    --text-light: #666666;
    --background-color: #f9f9f9;
    --card-color: #ffffff;
    --border-color: #e1e1e1;
    --success-color: #1dd1a1;
    --warning-color: #feca57;
    --danger-color: #ff6b6b;
    --font-main: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

a {
    color: var(--secondary-color);
    text-decoration: none;
}

button {
    cursor: pointer;
    font-family: var(--font-main);
}

/* Layout */
#app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    background-color: var(--card-color);
    padding: 1rem 2rem;
    box-shadow: var(--box-shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

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

nav {
    display: flex;
    gap: 1rem;
}

nav button {
    background: none;
    border: none;
    padding: 0.5rem 1rem;
    font-size: 1rem;
    color: var(--text-light);
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
}

nav button:hover {
    color: var(--primary-color);
}

nav button.active {
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
}

main {
    flex: 1;
    padding: 2rem;
}

section {
    margin-bottom: 2rem;
}

h2 {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

footer {
    background-color: var(--card-color);
    padding: 1rem 2rem;
    text-align: center;
    color: var(--text-light);
    box-shadow: 0 -2px 4px rgba(0, 0, 0, 0.05);
}

/* Dashboard */
.stats-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.card {
    background-color: var(--card-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--box-shadow);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.card-icon {
    background-color: rgba(255, 107, 107, 0.15);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
}

.card-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

.card-content p {
    font-size: 0.9rem;
    color: var(--text-light);
}

.charts-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.chart-card {
    background-color: var(--card-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--box-shadow);
}

.chart-card h3 {
    text-align: center;
    margin-bottom: 1rem;
}

.recent-activity {
    background-color: var(--card-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--box-shadow);
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

th {
    text-align: left;
    padding: 0.75rem;
    background-color: rgba(75, 123, 236, 0.1);
    color: var(--secondary-color);
    font-weight: 600;
}

td {
    padding: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

tr:hover {
    background-color: rgba(0, 0, 0, 0.02);
}

.positive {
    color: var(--success-color);
}

.negative {
    color: var(--danger-color);
}

/* Forms and Controls */
.section-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.search-filter {
    display: flex;
    gap: 1rem;
    flex: 1;
    max-width: 800px;
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
input[type="password"],
input[type="date"],
input[type="datetime-local"],
select,
textarea {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-family: var(--font-main);
    font-size: 1rem;
    width: 100%;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
}

/* Buttons */
.primary-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: background-color 0.3s ease;
}

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

.primary-btn:disabled {
    background-color: #cccccc;
    cursor: not-allowed;
}

.secondary-btn {
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: all 0.3s ease;
}

.secondary-btn:hover {
    background-color: rgba(255, 107, 107, 0.1);
}

.icon-btn {
    background: none;
    border: none;
    color: var(--text-light);
    padding: 0.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.icon-btn:hover {
    background-color: rgba(0, 0, 0, 0.05);
    color: var(--secondary-color);
}

.icon-btn.danger:hover {
    color: var(--danger-color);
}

/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background-color: var(--card-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group small {
    display: block;
    margin-top: 0.25rem;
    color: var(--text-light);
    font-size: 0.85rem;
}

.checkbox-group,
.radio-group {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

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

/* Client Section */
.clients-table {
    background-color: var(--card-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.actions {
    display: flex;
    gap: 0.5rem;
}

/* Rewards Section */
.rewards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.reward-card {
    background-color: var(--card-color);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
}

.reward-icon {
    background-color: var(--primary-color);
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.reward-details {
    padding: 1.5rem;
}

.reward-cost {
    margin-top: 1rem;
    font-weight: 600;
    color: var(--primary-color);
}

.reward-actions {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
}

/* Campaigns Section */
.campaigns-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
    gap: 1.5rem;
}

.campaign-card {
    background-color: var(--card-color);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 1.5rem;
}

.campaign-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
}

.status-badge.draft {
    background-color: rgba(254, 202, 87, 0.2);
    color: var(--warning-color);
}

.status-badge.active {
    background-color: rgba(29, 209, 161, 0.2);
    color: var(--success-color);
}

.status-badge.paused {
    background-color: rgba(75, 123, 236, 0.2);
    color: var(--secondary-color);
}

.status-badge.completed {
    background-color: rgba(51, 51, 51, 0.2);
    color: var(--text-light);
}

.campaign-body {
    margin-bottom: 1rem;
}

.campaign-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
}

/* Settings Section */
.settings-section {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(450px, 1fr));
    gap: 2rem;
}

.settings-section h2 {
    grid-column: 1 / -1;
}

.settings-card {
    background-color: var(--card-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--box-shadow);
}

/* Responsive */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        padding: 1rem;
    }

    nav {
        margin-top: 1rem;
        width: 100%;
        overflow-x: auto;
        padding-bottom: 0.5rem;
    }

    main {
        padding: 1rem;
    }

    .section-controls {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }

    .search-filter {
        flex-direction: column;
    }

    .settings-section {
        grid-template-columns: 1fr;
    }

    .charts-container {
        grid-template-columns: 1fr;
    }

    .campaigns-list {
        grid-template-columns: 1fr;
    }
}