/* SMS Gateway Dashboard Styles */
:root {
    --primary-color: #0066cc;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --light-gray: #f8f9fa;
    --dark-gray: #6c757d;
    --border-radius: 8px;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

body {
    background-color: var(--light-gray);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* Navigation */
.navbar-brand {
    font-weight: 600;
    font-size: 1.25rem;
}

.navbar-dark .navbar-nav .dropdown-menu {
    background-color: #004499;
    border: none;
}

.navbar-dark .navbar-nav .dropdown-item {
    color: white;
    transition: var(--transition);
}

.navbar-dark .navbar-nav .dropdown-item:hover {
    background-color: rgba(255,255,255,0.1);
    color: white;
}

/* Cards */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    margin-bottom: 1.5rem;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.card-header {
    border-radius: var(--border-radius) var(--border-radius) 0 0 !important;
    font-weight: 600;
    border-bottom: none;
    padding: 1rem 1.25rem;
}

.card-body {
    padding: 1.5rem;
}

/* Balance Card */
#user-balance {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0.5rem 0;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.card-body .btn-outline-success {
    border-width: 2px;
    font-weight: 500;
}

/* Statistics Card */
.card-body h5 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.card-body small {
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Modems Card */
#modems-active {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

/* Form Styling */
.form-label {
    font-weight: 600;
    color: #333;
    margin-bottom: 0.5rem;
}

.form-control, .input-group-text {
    border-radius: var(--border-radius);
    border: 2px solid #e9ecef;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(0, 102, 204, 0.25);
}

.input-group-text {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    font-weight: 600;
}

/* Textarea */
#message, #bulk-message, #bulk-numbers {
    resize: vertical;
    min-height: 100px;
}

/* Character Count */
.form-text {
    font-weight: 500;
}

#char-count {
    color: var(--primary-color);
    font-weight: 700;
}

#estimated-cost {
    color: var(--success-color);
    font-weight: 700;
}

/* Buttons */
.btn {
    border-radius: var(--border-radius);
    font-weight: 600;
    padding: 0.5rem 1.5rem;
    transition: var(--transition);
    border-width: 2px;
}

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

.btn-primary:hover {
    background-color: #004499;
    border-color: #004499;
    transform: translateY(-1px);
}

.btn-secondary:hover, .btn-info:hover {
    transform: translateY(-1px);
}

.btn i {
    margin-right: 0.5rem;
}

/* Table Styling */
.table-responsive {
    border-radius: var(--border-radius);
    overflow: hidden;
}

.table {
    margin-bottom: 0;
}

.table thead th {
    background-color: var(--primary-color);
    color: white;
    font-weight: 600;
    border: none;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.85rem;
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: rgba(0, 102, 204, 0.05);
}

.table td {
    vertical-align: middle;
    padding: 1rem 0.75rem;
}

/* Status Badges */
.status-queued { background-color: var(--warning-color); }
.status-sending { background-color: var(--info-color); }
.status-sent { background-color: var(--primary-color); }
.status-delivered { background-color: var(--success-color); }
.status-failed { background-color: var(--danger-color); }
.status-expired { background-color: var(--dark-gray); }

/* Loading Animation */
@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

.loading {
    animation: pulse 1.5s ease-in-out infinite;
}

/* Toast Notifications */
.toast-container {
    z-index: 9999;
}

.toast {
    border-radius: var(--border-radius);
    border: none;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .col-md-6 {
        margin-bottom: 1rem;
    }

    #user-balance {
        font-size: 2rem;
    }

    .card-body h5 {
        font-size: 1.5rem;
    }

    #modems-active {
        font-size: 1.8rem;
    }

    .table-responsive {
        font-size: 0.9rem;
    }

    .btn {
        width: 100%;
        margin-bottom: 0.5rem;
    }

    .d-flex.gap-2 {
        flex-direction: column;
    }
}

@media (max-width: 576px) {
    .container-fluid {
        padding-left: 10px;
        padding-right: 10px;
    }

    .card-body {
        padding: 1rem;
    }

    .navbar-brand {
        font-size: 1rem;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --light-gray: #1a1a1a;
        --primary-color: #3399ff;
    }

    body {
        background-color: var(--light-gray);
        color: #ffffff;
    }

    .card {
        background-color: #2d2d2d;
        color: #ffffff;
    }

    .form-control {
        background-color: #3d3d3d;
        border-color: #555;
        color: #ffffff;
    }

    .form-control:focus {
        background-color: #3d3d3d;
        border-color: var(--primary-color);
        color: #ffffff;
    }
}

/* Custom Animations */
.fade-in {
    opacity: 0;
    animation: fadeIn 0.5s ease-in forwards;
}

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

.slide-up {
    transform: translateY(20px);
    opacity: 0;
    animation: slideUp 0.6s ease-out forwards;
}

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

/* Utility Classes */
.text-shadow {
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.border-primary {
    border-color: var(--primary-color) !important;
}

.bg-gradient-primary {
    background: linear-gradient(135deg, var(--primary-color), #004499);
}

/* Hover Effects */
.card-hover:hover {
    background-color: rgba(0, 102, 204, 0.05);
    cursor: pointer;
}

.icon-hover {
    transition: var(--transition);
}

.icon-hover:hover {
    transform: scale(1.1);
    color: var(--primary-color);
}