/* Modern Professional Time Tracking System Styles */

:root {
    --primary: #4f46e5;
    --primary-dark: #3730a3;
    --primary-light: #a5b4fc;
    --secondary: #6366f1;
    --accent: #06b6d4;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    --light: #f8fafc;
    --dark: #0f172a;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-md: 0.625rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Enhanced Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes shimmer {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

@keyframes ripple {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* Enhanced Button Styles */
.btn-enhanced {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border: none;
    border-radius: var(--radius-md);
    color: white;
    padding: 0.875rem 1.75rem;
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    box-shadow: var(--shadow-sm);
}

.btn-enhanced::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn-enhanced:hover::before {
    left: 100%;
}

.btn-enhanced:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-enhanced:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

/* Enhanced Card Styles */
.card-enhanced {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.card-enhanced::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(79, 70, 229, 0.3), transparent);
}

.card-enhanced:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(79, 70, 229, 0.2);
}

/* Enhanced Form Styles */
.form-enhanced {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-xl);
}

.form-group-enhanced {
    margin-bottom: 1.5rem;
}

.form-label-enhanced {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--gray-700);
    font-size: 0.875rem;
}

.form-input-enhanced {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-family: inherit;
    transition: var(--transition);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(5px);
}

.form-input-enhanced:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1), var(--shadow-sm);
    background: rgba(255, 255, 255, 0.95);
}

.form-input-enhanced:hover {
    border-color: var(--gray-400);
}

/* Enhanced Table Styles */
.table-enhanced {
    width: 100%;
    border-collapse: collapse;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.table-enhanced th {
    background: linear-gradient(135deg, var(--gray-50), var(--gray-100));
    color: var(--gray-700);
    font-weight: 600;
    padding: 1rem;
    text-align: left;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--gray-200);
}

.table-enhanced td {
    padding: 1rem;
    border-bottom: 1px solid var(--gray-200);
    color: var(--gray-700);
    font-size: 0.875rem;
}

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

.table-enhanced tbody tr:hover {
    background: rgba(79, 70, 229, 0.05);
}

/* Enhanced Status Badges */
.status-badge-enhanced {
    display: inline-flex;
    align-items: center;
    padding: 0.375rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
    overflow: hidden;
}

.status-badge-enhanced::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

.status-badge-enhanced:hover::before {
    left: 100%;
}

.status-pending-enhanced {
    background: linear-gradient(135deg, #fef3c7, #fde68a);
    color: #92400e;
}

.status-approved-enhanced {
    background: linear-gradient(135deg, #dcfce7, #bbf7d0);
    color: #166534;
}

.status-rejected-enhanced {
    background: linear-gradient(135deg, #fef2f2, #fecaca);
    color: #dc2626;
}

/* Enhanced Modal Styles */
.modal-enhanced {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal-content-enhanced {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 2rem;
    box-shadow: var(--shadow-xl);
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* Enhanced Loading Styles */
.loading-overlay-enhanced {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.loading-overlay-enhanced.show {
    opacity: 1;
    visibility: visible;
}

.loading-spinner-enhanced {
    width: 40px;
    height: 40px;
    border: 3px solid var(--gray-200);
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Enhanced Notification Styles */
.notification-toast-enhanced {
    position: fixed;
    top: 20px;
    right: 20px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-xl);
    padding: 1rem 1.5rem;
    box-shadow: var(--shadow-xl);
    z-index: 1000;
    transform: translateX(400px);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
}

.notification-toast-enhanced.show {
    transform: translateX(0);
}

.notification-toast-enhanced.success {
    border-left: 4px solid var(--success);
    color: var(--success);
}

.notification-toast-enhanced.error {
    border-left: 4px solid var(--danger);
    color: var(--danger);
}

.notification-toast-enhanced.warning {
    border-left: 4px solid var(--warning);
    color: var(--warning);
}

.notification-toast-enhanced.info {
    border-left: 4px solid var(--info);
    color: var(--info);
}

/* Enhanced Sidebar Styles */
.sidebar-enhanced {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    box-shadow: var(--shadow-xl);
    height: fit-content;
    position: sticky;
    top: 1.5rem;
    transition: var(--transition);
}

.sidebar-enhanced:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl), 0 0 0 1px rgba(79, 70, 229, 0.1);
}

/* Enhanced Navigation Styles */
.nav-link-enhanced {
    display: flex;
    align-items: center;
    padding: 0.875rem 1rem;
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--gray-600);
    font-weight: 500;
    transition: var(--transition);
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.nav-link-enhanced::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(79, 70, 229, 0.1), transparent);
    transition: left 0.5s ease;
}

.nav-link-enhanced:hover::before {
    left: 100%;
}

.nav-link-enhanced:hover {
    background: linear-gradient(135deg, var(--gray-50), rgba(79, 70, 229, 0.05));
    color: var(--primary);
    transform: translateX(6px);
    box-shadow: var(--shadow-sm);
}

.nav-link-enhanced.active {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

.nav-link-enhanced.active::before {
    display: none;
}

/* Enhanced Summary Card Styles */
.summary-card-enhanced {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.7));
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.summary-card-enhanced::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
}

.summary-card-enhanced:hover {
    transform: translateY(-6px) scale(1.02);
    box-shadow: var(--shadow-xl);
    border-color: rgba(79, 70, 229, 0.3);
}

.summary-card-enhanced h3 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.75rem;
}

.summary-card-enhanced p {
    font-size: 1.75rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.025em;
}

/* Responsive Design Enhancements */
@media (max-width: 1024px) {
    .layout-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .sidebar-enhanced {
        position: static;
        margin-bottom: 1rem;
    }
}

@media (max-width: 640px) {
    .container {
        padding: 1rem;
    }
    
    .main-content {
        padding: 1.5rem;
    }
    
    .modal-content-enhanced {
        width: 95%;
        padding: 1.5rem;
    }
    
    .notification-toast-enhanced {
        right: 10px;
        left: 10px;
        transform: translateY(-100px);
    }
    
    .notification-toast-enhanced.show {
        transform: translateY(0);
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --light: #1f2937;
        --dark: #f9fafb;
        --gray-50: #374151;
        --gray-100: #4b5563;
        --gray-200: #6b7280;
        --gray-300: #9ca3af;
        --gray-400: #d1d5db;
        --gray-500: #e5e7eb;
        --gray-600: #f3f4f6;
        --gray-700: #f9fafb;
        --gray-800: #ffffff;
        --gray-900: #ffffff;
    }
    
    body {
        /* background: linear-gradient(135deg, #1f2937 0%, #111827 100%); */
        background: gray;
    }
    
    .card-enhanced,
    .form-enhanced,
    .sidebar-enhanced,
    .modal-content-enhanced {
        background: rgba(31, 41, 55, 0.95);
        border-color: rgba(75, 85, 99, 0.3);
    }
    
    .table-enhanced {
        background: rgba(31, 41, 55, 0.95);
    }
    
    .table-enhanced th {
        background: linear-gradient(135deg, #374151, #4b5563);
    }
}

/* Print Styles */
@media print {
    .sidebar-enhanced,
    .btn-enhanced,
    .notification-toast-enhanced {
        display: none !important;
    }
    
    .main-content {
        width: 100% !important;
        margin: 0 !important;
        padding: 0 !important;
        box-shadow: none !important;
        border: none !important;
        background: white !important;
    }
    
    .card-enhanced {
        box-shadow: none !important;
        border: 1px solid #ccc !important;
        background: white !important;
    }
}