/*
Visual Enhancements - Phase 1
=============================
SAFE CSS-only improvements for dashboard and campaign pages
No JavaScript dependencies, no breaking changes
*/

/* Enhanced Dashboard Cards */
.dashboard-card {
    background: linear-gradient(145deg, #ffffff 0%, #f8fafc 100%) !important;
    box-shadow: 0 8px 32px rgba(0,0,0,0.08), 0 0 0 1px rgba(255,255,255,0.5) !important;
    border-radius: 20px !important;
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.dashboard-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #3b82f6, #10b981, #8b5cf6, #f59e0b);
    opacity: 0.6;
}

.dashboard-card:hover {
    transform: translateY(-4px) !important;
    box-shadow: 0 16px 40px rgba(0,0,0,0.15) !important;
}

/* Enhanced KPI Cards */
.kpi-card {
    background: linear-gradient(135deg, var(--card-gradient-start, #667eea), var(--card-gradient-end, #764ba2)) !important;
    border-radius: 24px !important;
    position: relative;
    overflow: hidden;
}

.kpi-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 20%, rgba(255,255,255,0.1) 0%, transparent 50%);
    pointer-events: none;
}

/* Theme-specific gradients */
.theme-blue {
    --card-gradient-start: #3b82f6;
    --card-gradient-end: #1e40af;
}

.theme-green {
    --card-gradient-start: #10b981;
    --card-gradient-end: #047857;
}

.theme-purple {
    --card-gradient-start: #8b5cf6;
    --card-gradient-end: #6d28d9;
}

.theme-orange {
    --card-gradient-start: #f59e0b;
    --card-gradient-end: #d97706;
}

/* Enhanced Typography */
.card-title {
    font-weight: 700 !important;
    letter-spacing: -0.025em;
    color: #1e293b !important;
}

.kpi-value {
    font-weight: 900 !important;
    letter-spacing: -0.05em;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* Improved Section Headers */
.section-title {
    background: linear-gradient(135deg, #1e293b 0%, #475569 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800;
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
}

/* Enhanced Buttons */
.btn-primary {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%) !important;
    border: none !important;
    border-radius: 12px !important;
    font-weight: 600;
    text-transform: none;
    padding: 12px 24px !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 8px 20px rgba(59, 130, 246, 0.4) !important;
    background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%) !important;
}

.btn-success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%) !important;
    border: none !important;
    border-radius: 12px !important;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
    background: linear-gradient(135deg, #059669 0%, #047857 100%) !important;
    box-shadow: 0 8px 20px rgba(16, 185, 129, 0.4) !important;
}

/* Enhanced Loading Skeletons */
.loading-skeleton {
    background: linear-gradient(
        90deg,
        #f1f5f9 0%,
        #e2e8f0 20%,
        #f1f5f9 40%,
        #e2e8f0 100%
    ) !important;
    background-size: 300% 100% !important;
    animation: shimmer 2s infinite ease-in-out !important;
    border-radius: 12px !important;
}

@keyframes shimmer {
    0% { background-position: 300% 0; }
    100% { background-position: -300% 0; }
}

/* Smart Campaign Engine Enhancements */
.campaign-template-card {
    background: linear-gradient(145deg, #ffffff 0%, #f8fafc 100%);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 20px;
    padding: 24px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.campaign-template-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #3b82f6, #8b5cf6);
    opacity: 0.8;
}

.campaign-template-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
    border-color: rgba(59, 130, 246, 0.3);
}

/* Enhanced Search Bar */
.search-input {
    background: rgba(255, 255, 255, 0.9) !important;
    backdrop-filter: blur(10px);
    border: 2px solid rgba(59, 130, 246, 0.1) !important;
    border-radius: 16px !important;
    padding: 16px 20px 16px 56px !important;
    font-size: 16px;
    transition: all 0.3s ease !important;
}

.search-input:focus {
    background: rgba(255, 255, 255, 1) !important;
    border-color: #3b82f6 !important;
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1), 0 8px 24px rgba(0,0,0,0.1) !important;
    transform: translateY(-2px);
}

/* Enhanced Activity Feed */
.activity-item {
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(0,0,0,0.05);
    border-radius: 12px;
    padding: 16px !important;
    margin-bottom: 12px;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
}

.activity-item:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: translateX(4px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.activity-icon {
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%) !important;
    border: 2px solid rgba(59, 130, 246, 0.1);
}

/* Enhanced Tables */
.data-table {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-radius: 16px !important;
    overflow: hidden;
    border: 1px solid rgba(0,0,0,0.05);
}

.data-table th {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%) !important;
    color: #475569 !important;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.75rem;
    padding: 20px 24px !important;
}

.data-table tr:hover {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.03) 0%, rgba(139, 92, 246, 0.03) 100%) !important;
}

/* Badge Enhancements */
.badge {
    border-radius: 8px !important;
    font-weight: 600;
    padding: 6px 12px !important;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.bg-primary {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%) !important;
}

.bg-success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%) !important;
}

.bg-secondary {
    background: linear-gradient(135deg, #6b7280 0%, #4b5563 100%) !important;
}

/* Responsive Enhancements */
@media (max-width: 768px) {
    .dashboard-card {
        padding: 16px !important;
        border-radius: 16px !important;
    }

    .kpi-value {
        font-size: 2.5rem !important;
    }

    .search-input {
        padding: 14px 18px 14px 48px !important;
    }
}

/* Dark Mode Support (for future) */
@media (prefers-color-scheme: dark) {
    .dashboard-card {
        background: linear-gradient(145deg, #1e293b 0%, #334155 100%) !important;
        border-color: rgba(255,255,255,0.1);
    }

    .card-title {
        color: #f1f5f9 !important;
    }
}