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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
}

p {
    margin-bottom: 1rem;
}

a {
    color: #667eea;
    text-decoration: none;
    transition: all 0.3s ease;
}

a:hover {
    color: #764ba2;
}

/* Buttons */
button, .btn {
    font-family: inherit;
    cursor: pointer;
    border: none;
    border-radius: 5px;
    transition: all 0.3s ease;
}

button:active, .btn:active {
    transform: scale(0.98);
}

/* Forms */
input, textarea, select {
    font-family: inherit;
    font-size: 14px;
}

input:focus, textarea:focus, select:focus {
    outline: none;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Utility Classes */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

.section {
    padding: 60px 0;
}

.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.text-left {
    text-align: left;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }

.hidden {
    display: none;
}

.visible {
    display: block;
}

/* Responsive */
@media (max-width: 1200px) {
    .container {
        padding: 0 30px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }

    .section {
        padding: 40px 0;
    }

    h1 {
        font-size: 24px;
    }

    h2 {
        font-size: 20px;
    }

    h3 {
        font-size: 18px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .section {
        padding: 30px 0;
    }

    h1 {
        font-size: 20px;
    }

    h2 {
        font-size: 18px;
    }

    h3 {
        font-size: 16px;
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #667eea;
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #764ba2;
}

/* Selection */
::selection {
    background: #667eea;
    color: white;
}

::-moz-selection {
    background: #667eea;
    color: white;
}

/* Placeholder */
::placeholder {
    color: #999;
    opacity: 1;
}

:-ms-input-placeholder {
    color: #999;
}

::-ms-input-placeholder {
    color: #999;
}

/* Loading Spinner */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: bold;
}

.badge-primary {
    background: #667eea;
    color: white;
}

.badge-success {
    background: #4caf50;
    color: white;
}

.badge-warning {
    background: #ff9800;
    color: white;
}

.badge-danger {
    background: #f44336;
    color: white;
}

.badge-info {
    background: #2196f3;
    color: white;
}

/* Alerts */
.alert {
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    animation: slideDown 0.3s ease-out;
}

.alert-primary {
    background: #e3f2fd;
    color: #1565c0;
    border: 1px solid #90caf9;
}

.alert-success {
    background: #e8f5e9;
    color: #2e7d32;
    border: 1px solid #81c784;
}

.alert-warning {
    background: #fff3e0;
    color: #e65100;
    border: 1px solid #ffb74d;
}

.alert-danger {
    background: #ffebee;
    color: #c62828;
    border: 1px solid #ef5350;
}

.alert-info {
    background: #e0f2f1;
    color: #00695c;
    border: 1px solid #4db6ac;
}

/* Cards */
.card {
    background: white;
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.card-header {
    border-bottom: 2px solid #f0f0f0;
    padding-bottom: 15px;
    margin-bottom: 15px;
}

.card-body {
    padding: 0;
}

.card-footer {
    border-top: 2px solid #f0f0f0;
    padding-top: 15px;
    margin-top: 15px;
}

/* Grid */
.grid {
    display: grid;
    gap: 20px;
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }
}

/* Flexbox Utilities */
.flex {
    display: flex;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.flex-column {
    flex-direction: column;
}

.flex-wrap {
    flex-wrap: wrap;
}

.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }
.gap-4 { gap: 2rem; }

/* Shadows */
.shadow-sm {
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.shadow {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.shadow-lg {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.shadow-xl {
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

/* Borders */
.border {
    border: 1px solid #ddd;
}

.border-top {
    border-top: 1px solid #ddd;
}

.border-bottom {
    border-bottom: 1px solid #ddd;
}

.border-left {
    border-left: 1px solid #ddd;
}

.border-right {
    border-right: 1px solid #ddd;
}

.rounded {
    border-radius: 5px;
}

.rounded-lg {
    border-radius: 10px;
}

.rounded-full {
    border-radius: 50%;
}

/* Colors */
.text-primary { color: #667eea; }
.text-success { color: #4caf50; }
.text-warning { color: #ff9800; }
.text-danger { color: #f44336; }
.text-info { color: #2196f3; }
.text-muted { color: #999; }

.bg-primary { background: #667eea; color: white; }
.bg-success { background: #4caf50; color: white; }
.bg-warning { background: #ff9800; color: white; }
.bg-danger { background: #f44336; color: white; }
.bg-info { background: #2196f3; color: white; }
.bg-light { background: #f5f5f5; }
.bg-dark { background: #333; color: white; }

/* Display */
.d-none { display: none; }
.d-block { display: block; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

/* Print Styles */
@media print {
    body {
        background: white;
    }

    .no-print {
        display: none;
    }

    a {
        text-decoration: underline;
    }
}