/* UX4G Inspired Design System - SMS Gateway */
/* Primary Color: Dynamic via CSS Variables */

:root {
    --primary: #FF5F15;
    --primary-hover: #E54F0D;
    --primary-light: #FFF4EF;
    --primary-rgb: 255, 95, 21;
    
    --secondary: #6c757d;
    --success: #22C55E;
    --danger: #EF4444;
    --warning: #F59E0B;
    --info: #3B82F6;
    
    --dark: #1E293B;
    --gray-900: #0F172A;
    --gray-800: #1E293B;
    --gray-700: #334155;
    --gray-600: #475569;
    --gray-500: #64748B;
    --gray-400: #94A3B8;
    --gray-300: #CBD5E1;
    --gray-200: #E2E8F0;
    --gray-100: #F1F5F9;
    --gray-50: #F8FAFC;
    --white: #FFFFFF;
    
    --sidebar-width: 260px;
    --header-height: 70px;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --transition: all 0.2s ease-in-out;
}

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

body {
    font-family: var(--font-family);
    font-size: 14px;
    line-height: 1.6;
    color: var(--gray-700);
    background: var(--gray-50);
    min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    color: var(--gray-900);
    font-weight: 600;
    line-height: 1.3;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

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

a:hover {
    color: var(--primary-hover);
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    background: var(--white);
    border-right: 1px solid var(--gray-200);
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: var(--transition);
}

.sidebar-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--gray-200);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
}

.sidebar-logo-icon {
    width: 40px;
    height: 40px;
    background: var(--primary);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.25rem;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 16px 12px;
}

.sidebar-nav::-webkit-scrollbar {
    width: 4px;
}

.sidebar-nav::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar-nav::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: 4px;
}

.nav-section {
    margin-bottom: 8px;
}

.nav-section-title {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--gray-400);
    padding: 12px 16px 8px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--border-radius-sm);
    color: var(--gray-600);
    font-weight: 500;
    transition: var(--transition);
    margin-bottom: 4px;
}

.nav-link i {
    font-size: 1.125rem;
    width: 20px;
    text-align: center;
}

.nav-link:hover {
    background: var(--gray-100);
    color: var(--gray-900);
}

.nav-link.active {
    background: var(--primary-light);
    color: var(--primary);
}

.nav-link.active i {
    color: var(--primary);
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--gray-200);
}

.user-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--gray-50);
    border-radius: var(--border-radius-sm);
    margin-bottom: 12px;
}

.user-avatar {
    width: 40px;
    height: 40px;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 600;
    font-size: 14px;
}

.user-info {
    flex: 1;
    min-width: 0;
}

.user-name {
    font-weight: 600;
    color: var(--gray-900);
    font-size: 14px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-role {
    font-size: 12px;
    color: var(--gray-500);
}

/* Main Content */
.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    background: var(--gray-50);
}

.content-wrapper {
    padding: 24px;
    max-width: 1400px;
}

/* Page Header */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    display: flex;
    align-items: center;
    gap: 12px;
}

.page-title i {
    color: var(--primary);
}

/* Cards */
.card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--gray-200);
    background: transparent;
}

.card-header h5, .card-header h6 {
    margin: 0;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-body {
    padding: 20px;
}

.card-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--gray-200);
    background: var(--gray-50);
}

/* Stat Cards */
.stat-card {
    position: relative;
    overflow: hidden;
}

.stat-card .stat-icon {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 3rem;
    opacity: 0.1;
    color: var(--primary);
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-900);
    line-height: 1;
    margin-bottom: 4px;
}

.stat-card .stat-label {
    font-size: 13px;
    color: var(--gray-500);
    font-weight: 500;
}

.stat-card.primary { border-left: 4px solid var(--primary); }
.stat-card.success { border-left: 4px solid var(--success); }
.stat-card.warning { border-left: 4px solid var(--warning); }
.stat-card.danger { border-left: 4px solid var(--danger); }
.stat-card.info { border-left: 4px solid var(--info); }

/* Buttons - Improved */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--border-radius-sm);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

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

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

.btn-primary:hover {
    background: var(--primary-hover);
    color: var(--white);
    box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.4);
}

.btn-secondary {
    background: var(--gray-100);
    color: var(--gray-700);
}

.btn-secondary:hover {
    background: var(--gray-200);
    color: var(--gray-900);
}

.btn-success {
    background: var(--success);
    color: var(--white);
}

.btn-success:hover {
    background: #16A34A;
    color: var(--white);
    box-shadow: 0 4px 12px rgba(34, 197, 94, 0.4);
}

.btn-danger {
    background: var(--danger);
    color: var(--white);
}

.btn-danger:hover {
    background: #DC2626;
    color: var(--white);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.4);
}

.btn-warning {
    background: var(--warning);
    color: var(--white);
}

.btn-warning:hover {
    background: #D97706;
    color: var(--white);
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.4);
}

.btn-info {
    background: var(--info);
    color: var(--white);
}

.btn-info:hover {
    background: #2563EB;
    color: var(--white);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

/* Soft/Light Button Variants - Better than outline */
.btn-soft-primary {
    background: var(--primary-light);
    color: var(--primary);
}

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

.btn-soft-success {
    background: #DCFCE7;
    color: #16A34A;
}

.btn-soft-success:hover {
    background: var(--success);
    color: var(--white);
}

.btn-soft-danger {
    background: #FEE2E2;
    color: #DC2626;
}

.btn-soft-danger:hover {
    background: var(--danger);
    color: var(--white);
}

.btn-soft-warning {
    background: #FEF3C7;
    color: #D97706;
}

.btn-soft-warning:hover {
    background: var(--warning);
    color: var(--white);
}

.btn-soft-info {
    background: #DBEAFE;
    color: #2563EB;
}

.btn-soft-info:hover {
    background: var(--info);
    color: var(--white);
}

.btn-soft-secondary {
    background: var(--gray-100);
    color: var(--gray-600);
}

.btn-soft-secondary:hover {
    background: var(--gray-200);
    color: var(--gray-900);
}

/* Outline buttons - cleaner look */
.btn-outline-primary {
    background: transparent;
    border: 1.5px solid var(--primary);
    color: var(--primary);
}

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

.btn-outline-secondary {
    background: transparent;
    border: 1.5px solid var(--gray-300);
    color: var(--gray-600);
}

.btn-outline-secondary:hover {
    background: var(--gray-100);
    color: var(--gray-900);
    border-color: var(--gray-400);
}

.btn-outline-warning {
    background: transparent;
    border: 1.5px solid #ffc107;
    color: #ffc107;
}

.btn-outline-warning:hover {
    background: #ffc107;
    color: var(--white);
}


.btn-outline-danger {
    background: transparent;
    border: 1.5px solid var(--danger);
    color: var(--danger);
}

.btn-outline-danger:hover {
    background: var(--danger);
    color: var(--white);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 16px;
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
}

.btn-icon.btn-sm {
    width: 32px;
    height: 32px;
}

/* Action Button Group - for card actions */
.action-buttons {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.action-buttons .btn {
    padding: 8px 14px;
    font-size: 13px;
    border-radius: 6px;
}

/* Forms */
.form-label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 6px;
}

.form-control, .form-select {
    width: 100%;
    padding: 10px 14px;
    font-size: 14px;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius-sm);
    background: var(--white);
    color: var(--gray-900);
    transition: var(--transition);
}

.form-control:focus, .form-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.1);
}

.form-control::placeholder {
    color: var(--gray-400);
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

.form-text {
    font-size: 12px;
    color: var(--gray-500);
    margin-top: 4px;
}

.input-group {
    display: flex;
}

.input-group .form-control {
    border-radius: var(--border-radius-sm) 0 0 var(--border-radius-sm);
}

.input-group .btn {
    border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
}

.input-group-text {
    padding: 10px 14px;
    background: var(--gray-100);
    border: 1px solid var(--gray-300);
    border-right: none;
    border-radius: var(--border-radius-sm) 0 0 var(--border-radius-sm);
    color: var(--gray-500);
}

.form-check {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.form-check-input {
    width: 18px;
    height: 18px;
    border: 2px solid var(--gray-300);
    border-radius: 4px;
    cursor: pointer;
    accent-color: var(--primary);
}

.form-check-label {
    font-size: 14px;
    color: var(--gray-700);
    cursor: pointer;
}

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

.table th, .table td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.table th {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--gray-500);
    background: var(--gray-50);
}

.table tbody tr:hover {
    background: var(--gray-50);
}

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

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 500;
    border-radius: 20px;
}

.badge-primary {
    background: var(--primary-light);
    color: var(--primary);
}

.badge-success {
    background: #DCFCE7;
    color: #16A34A;
}

.badge-danger {
    background: #FEE2E2;
    color: #DC2626;
}

.badge-warning {
    background: #FEF3C7;
    color: #D97706;
}

.badge-info {
    background: #DBEAFE;
    color: #2563EB;
}

.badge-secondary {
    background: var(--gray-100);
    color: var(--gray-600);
}

/* Alerts */
.alert {
    padding: 14px 16px;
    border-radius: var(--border-radius-sm);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.alert-success {
    background: #DCFCE7;
    color: #16A34A;
    border: 1px solid #BBF7D0;
}

.alert-danger {
    background: #FEE2E2;
    color: #DC2626;
    border: 1px solid #FECACA;
}

.alert-warning {
    background: #FEF3C7;
    color: #D97706;
    border: 1px solid #FDE68A;
}

.alert-info {
    background: #DBEAFE;
    color: #2563EB;
    border: 1px solid #BFDBFE;
}

.alert-dismissible {
    position: relative;
    padding-right: 40px;
}

.alert .btn-close {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    font-size: 18px;
    cursor: pointer;
    opacity: 0.5;
}

.alert .btn-close:hover {
    opacity: 1;
}

/* Progress */
.progress {
    height: 8px;
    background: var(--gray-200);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--primary);
    border-radius: 4px;
    transition: width 0.3s ease;
}

.progress-bar.bg-success { background: var(--success); }
.progress-bar.bg-warning { background: var(--warning); }
.progress-bar.bg-danger { background: var(--danger); }

/* Tabs */
.nav-tabs {
    display: flex;
    gap: 4px;
    border-bottom: 1px solid var(--gray-200);
    margin-bottom: 16px;
}

.nav-tabs .nav-link {
    padding: 12px 20px;
    color: var(--gray-500);
    border: none;
    border-bottom: 2px solid transparent;
    border-radius: 0;
    margin-bottom: -1px;
    background: none;
}

.nav-tabs .nav-link:hover {
    color: var(--gray-700);
    background: none;
}

.nav-tabs .nav-link.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    background: none;
}

/* Dropdown */
.dropdown-menu {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-lg);
    padding: 8px;
    min-width: 180px;
}

.dropdown-item {
    display: block;
    padding: 10px 14px;
    color: var(--gray-700);
    border-radius: 6px;
    transition: var(--transition);
}

.dropdown-item:hover {
    background: var(--gray-100);
    color: var(--gray-900);
}

/* List Groups */
.list-group {
    border-radius: var(--border-radius);
    overflow: hidden;
}

.list-group-item {
    padding: 16px 20px;
    border: none;
    border-bottom: 1px solid var(--gray-200);
    background: var(--white);
}

.list-group-item:last-child {
    border-bottom: none;
}

/* Pagination */
.pagination {
    display: flex;
    gap: 4px;
    list-style: none;
    padding: 0;
    margin: 0;
}

.page-link {
    padding: 8px 14px;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius-sm);
    color: var(--gray-600);
    background: var(--white);
    transition: var(--transition);
}

.page-link:hover {
    background: var(--gray-100);
    color: var(--gray-900);
}

.page-item.active .page-link {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
}

.page-item.disabled .page-link {
    background: var(--gray-100);
    color: var(--gray-400);
    pointer-events: none;
}

/* Modal */
.modal-content {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-xl);
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--gray-200);
}

.modal-title {
    font-weight: 600;
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--gray-200);
}

/* Login Page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--white);
    padding: 24px;
}

.login-card {
    width: 100%;
    max-width: 420px;
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-logo {
    width: 64px;
    height: 64px;
    background: var(--primary);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.login-logo i {
    font-size: 2rem;
    color: var(--white);
}

.login-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.login-subtitle {
    color: var(--gray-500);
    font-size: 14px;
}

.login-form .form-control {
    padding: 14px 16px;
    font-size: 15px;
}

.login-form .btn-primary {
    width: 100%;
    padding: 14px;
    font-size: 15px;
    font-weight: 600;
}

/* Utilities */
.text-primary { color: var(--primary) !important; }
.text-success { color: var(--success) !important; }
.text-danger { color: var(--danger) !important; }
.text-warning { color: var(--warning) !important; }
.text-muted { color: var(--gray-500) !important; }

.bg-primary { background: var(--primary) !important; }
.bg-primary-light { background: var(--primary-light) !important; }

.rounded { border-radius: var(--border-radius) !important; }
.rounded-sm { border-radius: var(--border-radius-sm) !important; }

.shadow { box-shadow: var(--shadow) !important; }
.shadow-md { box-shadow: var(--shadow-md) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }

.gap-1 { gap: 4px; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 16px; }
.gap-4 { gap: 24px; }

/* Empty State */
.empty-state {
    text-align: center;
    padding: 48px 24px;
}

.empty-state-icon {
    width: 80px;
    height: 80px;
    background: var(--gray-100);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.empty-state-icon i {
    font-size: 2rem;
    color: var(--gray-400);
}

.empty-state-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.empty-state-text {
    color: var(--gray-500);
    margin-bottom: 20px;
}

/* Status Indicator */
.status-indicator {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-dot.online { background: var(--success); }
.status-dot.offline { background: var(--danger); }
.status-dot.pending { background: var(--warning); }

/* Responsive */
@media (max-width: 991px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .content-wrapper {
        padding: 16px;
    }
}

@media (max-width: 767px) {
    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    
    .stat-card .stat-value {
        font-size: 1.5rem;
    }
}