:root {
    --primary-color: #2563eb;
    --secondary-color: #0ea5e9;
    --success-color: #10b981;
    --success-dark: #059669;
    --text-color: #1e293b;
    --background-color: #f8fafc;
    --border-color: #e2e8f0;
    --hover-color: #f1f5f9;
    --danger-color: #ef4444;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.1);
    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    --gradient-success: linear-gradient(135deg, var(--success-color), var(--success-dark));
    --gradient-danger: linear-gradient(135deg, var(--danger-color), var(--danger-color));
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
}

.main-container {
    min-height: 100vh;
    padding: 2rem 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.card {
    border: none;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    background: white;
    backdrop-filter: blur(10px);
}

.card-body {
    padding: 2.5rem;
}

.banner-img {
    max-height: 180px;
    object-fit: cover;
    /* border-radius: 15px; */
    box-shadow: var(--shadow-md);
}

/* Form Styling */
.form-group {
    margin-bottom: 1.5rem;
}

.form-control {
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 1rem 1.25rem;
    font-size: 1rem;
    background-color: var(--background-color);
    color: var(--text-color);
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
    outline: none;
}

.form-label {
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.75rem;
    display: block;
    font-size: 1rem;
}

/* Button Styling */
.btn {
    padding: 1rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: var(--shadow-sm);
    font-size: 1rem;
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(255, 255, 255, 0.2), transparent);
    opacity: 0;
    pointer-events: none;
}

.btn-lg {
    padding: 1.25rem 2.5rem;
    font-size: 1.1rem;
}

.btn-primary {
    background: var(--gradient-primary);
    border: none;
    color: white;
}

.btn-success {
    background: var(--gradient-success);
    border: none;
    color: white;
}

.btn-primary:hover,
.btn-primary:focus {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
}

.btn-success:hover,
.btn-success:focus {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, var(--success-dark), var(--success-color));
}

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

.d-grid {
    margin-top: 2rem;
}

.d-grid .btn {
    margin-bottom: 1rem;
    width: 100%;
}

.d-grid .btn:last-child {
    margin-bottom: 0;
}

/* Upload Area */
.image-upload-container {
    margin-bottom: 2rem;
    position: relative;
}

.upload-area {
    background: linear-gradient(to bottom right, rgba(255, 255, 255, 0.95), rgba(248, 250, 252, 0.95));
    border: 2px dashed var(--danger-color);
    border-radius: 20px;
    padding: 2.5rem;
    cursor: pointer;
    min-height: 400px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    box-shadow: inset 0 0 20px rgba(37, 99, 235, 0.05),
        0 4px 12px rgba(0, 0, 0, 0.05);
}

.upload-area.has-image::after {
    display: none;
}

.upload-area.has-image .preview-image {
    filter: none;
}

.preview-image {
    max-width: 85%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    object-fit: contain;
    position: relative;
    margin: 1rem 0;
    filter: brightness(0.9);
}

.upload-area::after {
    content: 'Click to select photo';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(255, 255, 255, 0.98);
    padding: 1rem 2.5rem;
    border-radius: 12px;
    color: var(--danger-color);
    font-weight: 600;
    font-size: 1.1rem;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.15);
    backdrop-filter: blur(8px);
    z-index: 10;
    letter-spacing: 0.3px;
    pointer-events: none;
}

.hidden-input {
    display: none;
}

/* Preview Section */
.preview-container {
    padding: 2.5rem;
    border-top: 2px solid rgba(37, 99, 235, 0.1);
    background: white;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
}

.preview-box {
    background: var(--background-color);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.preview-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-danger);
}

.preview-box h4 {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1.5rem;
    margin-bottom: 2rem;
    position: relative;
}

.preview-box h4::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.preview-image-wrapper {
    padding: 1.5rem;
    position: relative;
    max-width: 450px;
    margin: 0 auto;
}

.preview-result {
    width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
}

/* Cropper Customization */
.cropper-view-box,
.cropper-face {
    border-radius: 50%;
}

.cropper-view-box {
    outline: 2px solid var(--primary-color);
    outline-color: var(--primary-color);
    box-shadow: 0 0 0 1px var(--secondary-color);
}

.cropper-line {
    background-color: var(--primary-color);
}

.cropper-point {
    background-color: var(--secondary-color);
    width: 8px;
    height: 8px;
}

/* Preloader */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(5px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 6px solid var(--border-color);
    border-top: 6px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

    100% {
        transform: rotate(360deg);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .card-body {
        padding: 1.5rem;
    }

    .preview-container {
        padding: 1.5rem;
        margin-top: 2rem;
    }

    .preview-box {
        margin-bottom: 1.5rem;
        padding: 1.5rem;
    }

    .upload-area {
        min-height: 250px;
        padding: 1.5rem;
    }

    .preview-box h4 {
        font-size: 1.3rem;
        margin-bottom: 1.5rem;
    }

    .preview-image-wrapper {
        padding: 1rem;
    }

    .form-control {
        padding: 0.875rem 1rem;
    }

    .btn {
        width: 100%;
        margin-bottom: 0.5rem;
    }

    .btn-lg {
        padding: 1rem 1.5rem;
        font-size: 1rem;
    }
}

/* Footer Styles */
.site-footer {
    padding: 20px 0;
    background: linear-gradient(to right, #f8f9fa, #e9ecef);
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.footer-content {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    font-size: 0.9rem;
}

.footer-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-item span {
    color: #6c757d;
}

.footer-item a {
    color: #dc3545;
    text-decoration: none;
    transition: color 0.3s ease;
    font-weight: 500;
}

.footer-item a:hover {
    color: #c82333;
    text-decoration: underline;
}

.footer-divider {
    color: #adb5bd;
    font-weight: 300;
}