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

:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --primary-light: #eef2ff;
    --secondary-color: #8b5cf6;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --border-color: #e5e7eb;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #5469c6 0%, #1b49a5 100%);
    min-height: 100vh;
    color: var(--text-primary);
    padding-bottom: 40px;
}

.header {
    background: rgba(5, 15, 93, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    padding: 24px 0;
    margin-bottom: 40px;
    border-bottom: 3px solid var(--primary-color);
}

.header h1 {
    color: white;
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    letter-spacing: -0.5px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.controls {
    background: var(--bg-primary);
    padding: 24px;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    margin-bottom: 32px;
}

.search-filter {
    display: flex;
    gap: 16px;
    align-items: center;
    flex-wrap: wrap;
}

.search-box,
.filter-box {
    flex: 1;
    min-width: 200px;
}

.search-box input,
.filter-box select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 15px;
    transition: all 0.3s ease;
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.search-box input:focus,
.filter-box select:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--bg-primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.search-box input::placeholder {
    color: var(--text-secondary);
}
#openPopup {
    background: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-md);
    padding: 12px 24px;
    border: none;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
    position: static;
}
#openPopup:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

#openPopup:active {
    transform: translateY(0);
}

.user-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

.user-card {
    background: var(--bg-primary);
    border-radius: 16px;
    padding: 24px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.user-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.user-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.card-actions{
    margin: 8px 0px 0px;
    padding: 8px 0px;
}
.btn-edit,
.btn-delete {
    flex: 1;
    padding: 10px;
    margin: 0px 4px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-edit {
    background: var(--success-color);
    color: white;
    margin-left: 0px;
    padding: 10px 18px;
}

.btn-edit:hover {
    background: #059669;
    transform: scale(1.05);
}

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

.btn-delete:hover {
    background: #dc2626;
    transform: scale(1.05);
}

.empty-state {
    text-align: center;
    padding: 80px 20px;
    background: var(--bg-primary);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
}

.empty-state h3 {
    font-size: 24px;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.empty-state p {
    font-size: 16px;
    color: var(--text-secondary);
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}
.popup {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

.popup.active {
    display: flex;
}
@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}
.popup-content {
    background: var(--bg-primary);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
    width: 90%;
    max-width: 500px;
    position: relative;
    animation: slideUp 0.3s ease;
}

.popup-content h3 {
    font-size: 28px;
    color: var(--text-primary);
    margin-bottom: 24px;
    text-align: center;
}

.popup-content input,
.popup-content select {
    width: 100%;
    padding: 14px 16px;
    margin-bottom: 16px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 15px;
    transition: all 0.3s ease;
    background: var(--bg-secondary);
}

.popup-content input:focus,
.popup-content select:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--bg-primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.popup-content button {
    width: 100%;
    padding: 14px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 8px;
}

.popup-content button:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}