:root {
    --primary-color: #dc3545;
    --primary-dark: #c82333;
    --primary-gradient: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    --secondary-color: #6c757d;
    --background: #f5f7fa;
    --white: #ffffff;
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --border-color: #e1e8ed;
    --success: #27ae60;
    --error: #e74c3c;
    --warning: #f39c12;
    --info: #3498db;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
    --shadow-hover: 0 12px 35px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --border-radius: 12px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--background);
    color: var(--text-dark);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.login-logo {
    width: 60px;  
    height: auto;
    margin-bottom: 10px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

.hidden {
    display: none !important;
}

header {
    background: var(--primary-gradient);
    box-shadow: var(--shadow);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--white);
    font-size: 24px;
    font-weight: 700;
}

.logo-placeholder,
.logo-placeholder-small {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.logo-placeholder img,
.logo-placeholder-small img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.logo-fallback {
    color: var(--white);
    font-size: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

.logo-placeholder-small {
    width: 40px;
    height: 40px;
}

.logo-placeholder-small i {
    font-size: 20px;
    color: var(--white);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 16px;
}

.user-email {
    color: var(--white);
    font-weight: 500;
    opacity: 0.95;
}

.main-content {
    padding: 32px 0;
    min-height: calc(100vh - 100px);
}

.card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 28px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.card:hover {
    box-shadow: var(--shadow);
}

.card h3 {
    color: var(--text-dark);
    margin-bottom: 20px;
    font-size: 20px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.form-card {
    background: linear-gradient(to bottom, var(--white) 0%, #fafbfc 100%);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 28px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 20px;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary-gradient);
    transform: scaleY(0);
    transition: var(--transition);
}

.stat-card:hover::before {
    transform: scaleY(1);
}

.stat-card.clickable {
    cursor: pointer;
}

.stat-card.clickable:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.stat-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    flex-shrink: 0;
    transition: var(--transition);
}

.campaigns-icon {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
}

.sms-icon {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: var(--white);
}

.contacts-icon {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: var(--white);
}

.stat-card:hover .stat-icon {
    transform: scale(1.1) rotate(5deg);
}

.stat-content h3 {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-dark);
    margin: 0;
    line-height: 1;
}

.stat-content p {
    color: var(--text-light);
    margin: 8px 0 0 0;
    font-size: 15px;
    font-weight: 500;
}

.card-hover-indicator {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%) translateX(10px);
    opacity: 0;
    transition: var(--transition);
    color: var(--primary-color);
    font-size: 24px;
}

.stat-card.clickable:hover .card-hover-indicator {
    opacity: 1;
    transform: translateY(-50%) translateX(0);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: var(--text-dark);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="tel"],
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 15px;
    transition: var(--transition);
    background: var(--white);
    color: var(--text-dark);
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(220, 53, 69, 0.1);
}

.form-group textarea {
    min-height: 140px;
    resize: vertical;
    line-height: 1.6;
}

.char-counter {
    display: block;
    text-align: right;
    color: var(--text-light);
    font-size: 13px;
    margin-top: 6px;
}

.file-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.file-input-wrapper input[type="file"] {
    display: none;
}

.file-input-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--white);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-dark);
    font-weight: 500;
    font-size: 14px;
}

.file-input-label:hover {
    border-color: var(--primary-color);
    background: rgba(220, 53, 69, 0.05);
    color: var(--primary-color);
}

.file-name {
    color: var(--text-light);
    font-size: 14px;
    font-style: italic;
}

.form-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.btn {
    padding: 14px 28px;
    border: none;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: inherit;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--primary-gradient);
    color: var(--white);
    box-shadow: 0 4px 12px rgba(220, 53, 69, 0.3);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(220, 53, 69, 0.4);
}

.btn-secondary {
    background: var(--white);
    color: var(--text-dark);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--background);
    border-color: var(--text-light);
}

.campaign-item {
    padding: 20px;
    background: linear-gradient(to right, #fafbfc 0%, var(--white) 100%);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    margin-bottom: 16px;
    transition: var(--transition);
}

.campaign-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
    transform: translateX(4px);
}

.campaign-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    flex-wrap: wrap;
    gap: 10px;
}

.campaign-date {
    color: var(--text-light);
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.campaign-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    flex-wrap: wrap;
    gap: 12px;
    color: var(--text-light);
    font-size: 14px;
}

.campaign-info span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.campaign-stats {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
}

.campaign-message {
    padding: 14px;
    background: var(--white);
    border-left: 3px solid var(--primary-color);
    border-radius: 6px;
    color: var(--text-dark);
    font-size: 14px;
    line-height: 1.6;
}

.text-success {
    color: var(--success) !important;
}

.text-danger {
    color: var(--error) !important;
}

.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    align-items: center;
    justify-content: center;
    padding: 20px;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.modal-content {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-large {
    max-width: 1000px;
}

.modal-medium {
    max-width: 700px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 28px;
    border-bottom: 1px solid var(--border-color);
    background: linear-gradient(to bottom, #fafbfc 0%, var(--white) 100%);
}

.modal-header h2 {
    font-size: 22px;
    color: var(--text-dark);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0;
}

.modal-close {
    font-size: 32px;
    color: var(--text-light);
    cursor: pointer;
    transition: var(--transition);
    line-height: 1;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
}

.modal-close:hover {
    color: var(--error);
    background: rgba(231, 76, 60, 0.1);
}

.modal-body {
    padding: 28px;
    overflow-y: auto;
    max-height: calc(90vh - 100px);
}

.modal-title {
    font-size: 22px;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.modal-message {
    color: var(--text-dark);
    line-height: 1.6;
    margin-bottom: 24px;
    white-space: pre-line;
}

.search-box {
    position: relative;
    margin-bottom: 24px;
}

.search-box i {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
    font-size: 18px;
}

.search-box input {
    width: 100%;
    padding: 14px 16px 14px 48px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 15px;
    transition: var(--transition);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(220, 53, 69, 0.1);
}

.table-responsive {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.data-table thead {
    background: linear-gradient(to bottom, #f8f9fa 0%, #e9ecef 100%);
}

.data-table th,
.data-table td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.data-table tbody tr {
    transition: var(--transition);
}

.data-table tbody tr:hover {
    background: #fafbfc;
}

.message-preview {
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.badge {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-pending {
    background: #fff3cd;
    color: #856404;
}

.badge-sending {
    background: #d1ecf1;
    color: #0c5460;
}

.badge-completed {
    background: #d4edda;
    color: #155724;
}

.badge-failed {
    background: #f8d7da;
    color: #721c24;
}

.stats-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.stat-detail-card {
    background: linear-gradient(135deg, #f5f7fa 0%, var(--white) 100%);
    padding: 28px;
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.stat-detail-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.stat-detail-card i {
    font-size: 40px;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.stat-detail-card h4 {
    font-size: 32px;
    color: var(--text-dark);
    margin-bottom: 8px;
    font-weight: 700;
}

.stat-detail-card p {
    color: var(--text-light);
    font-size: 14px;
    font-weight: 500;
}

.contacts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 16px;
}

.contact-card {
    background: var(--white);
    border: 1px solid var(--border-color);
    padding: 18px;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    transition: var(--transition);
}

.contact-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
}

.contact-card i {
    font-size: 28px;
    color: var(--primary-color);
}

.contact-card span {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 15px;
}

.contact-card small {
    color: var(--text-light);
    font-size: 13px;
}

.loading-text,
.error-text {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-light);
    font-size: 15px;
}

.error-text {
    color: var(--error);
}

.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    padding: 20px;
}

.auth-box {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 48px;
    max-width: 480px;
    width: 100%;
    box-shadow: var(--shadow-lg);
}

.auth-logo {
    text-align: center;
    margin-bottom: 40px;
}

.auth-logo .logo-placeholder {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: var(--primary-gradient);
}

.auth-logo .logo-fallback i {
    font-size: 40px;
}

.auth-logo h1 {
    font-size: 32px;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.auth-logo p {
    color: var(--text-light);
    font-size: 15px;
}

.alert {
    padding: 14px 18px;
    border-radius: 10px;
    margin-bottom: 20px;
    font-size: 14px;
    font-weight: 500;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.help-text {
    text-align: center;
    margin-top: 20px;
    color: var(--text-light);
    font-size: 14px;
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .header-content {
        flex-direction: column;
        align-items: flex-start;
    }

    .user-info {
        width: 100%;
        justify-content: space-between;
    }

    .auth-box {
        padding: 32px 24px;
    }

    .modal-large,
    .modal-medium {
        max-width: 100%;
    }

    .modal-body {
        padding: 20px;
    }

    .form-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .contacts-grid {
        grid-template-columns: 1fr;
    }

    .data-table {
        font-size: 12px;
    }

    .data-table th,
    .data-table td {
        padding: 10px 8px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .stat-card {
        padding: 20px;
    }

    .stat-icon {
        width: 50px;
        height: 50px;
        font-size: 24px;
    }

    .stat-content h3 {
        font-size: 28px;
    }
}