:root {
    --primary-color: #FF6B00;
    --primary-light: #FFF5EC;
    --primary-dark: #CC5500;
    --text-dark: #2C3E50;
    --text-light: #7F8C8D;
    --bg-light: #F9FAFB;
    --white: #FFFFFF;
    --border-radius: 16px;
    --border-radius-sm: 8px;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.container {
    background-color: var(--white);
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 600px;
    text-align: center;
    transition: var(--transition);
}

h1 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-dark);
}

p.subtitle {
    color: var(--text-light);
    margin-bottom: 30px;
    font-size: 16px;
}

.form-group {
    margin-bottom: 25px;
    text-align: left;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 14px;
    color: var(--text-dark);
}

.upload-area {
    border: 2px dashed #E0E0E0;
    border-radius: var(--border-radius);
    padding: 40px 20px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    background-color: #FAFAFA;
}

.upload-area:hover, .upload-area.dragover {
    border-color: var(--primary-color);
    background-color: var(--primary-light);
}

.upload-area i {
    font-size: 40px;
    color: var(--primary-color);
}

.upload-area span {
    color: var(--text-light);
    font-size: 14px;
}

input[type="file"] {
    display: none;
}

.btn {
    display: inline-block;
    width: 100%;
    padding: 14px;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(255, 107, 0, 0.2);
}

.btn:hover {
    background-color: var(--primary-dark);
    box-shadow: 0 6px 16px rgba(255, 107, 0, 0.3);
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0);
}

.btn:disabled {
    background-color: #E0E0E0;
    color: #999;
    cursor: not-allowed;
    box-shadow: none;
}

/* Card styles for Step 2 */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.card {
    background: var(--white);
    border: 2px solid #EAEAEA;
    border-radius: var(--border-radius);
    padding: 20px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
}

.card.selected {
    border-color: var(--primary-color);
    background-color: var(--primary-light);
}

.card.selected::after {
    content: '✓';
    position: absolute;
    top: 10px;
    right: 10px;
    background: var(--primary-color);
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
}

/* Responsive */
@media (max-width: 480px) {
    .container {
        padding: 20px;
    }
    h1 {
        font-size: 20px;
    }
}

/* Дизайнерський чекбокс */
.designer-checkbox-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    cursor: pointer;
    padding: 14px 28px;
    background: #FFFFFF;
    border: 2px solid #EAEAEA;
    border-radius: var(--border-radius);
    font-weight: 700;
    font-size: 15px;
    color: var(--text-dark);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    user-select: none;
    margin: 15px auto;
    width: 100%;
    max-width: 100%;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.02);
}
.designer-checkbox-container:hover {
    border-color: var(--primary-color);
    background: var(--primary-light);
    color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255, 107, 0, 0.12);
}
.designer-checkbox-container.checked {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, #FF8A00 0%, #FF6B00 100%);
    color: #FFFFFF;
    box-shadow: 0 8px 25px rgba(255, 107, 0, 0.3);
}
.designer-checkbox-container.checked i.fa-wand-magic-sparkles {
    color: #FFFFFF !important;
    animation: sparkle 1.5s infinite;
}
.designer-checkbox-container input[type="checkbox"] {
    display: none;
}
.designer-custom-box {
    width: 22px;
    height: 22px;
    border: 2px solid #D1D5DB;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #FFFFFF;
    color: transparent;
    font-size: 11px;
    transition: all 0.2s ease;
}
.designer-checkbox-container:hover .designer-custom-box {
    border-color: var(--primary-color);
}
.designer-checkbox-container.checked .designer-custom-box {
    border-color: #FFFFFF;
    background: #FFFFFF;
    color: var(--primary-color);
}
@keyframes sparkle {
    0%, 100% { transform: scale(1) rotate(0deg); opacity: 1; }
    50% { transform: scale(1.2) rotate(15deg); opacity: 0.8; }
}

@media (max-width: 600px) {
    .designer-checkbox-container {
        display: flex !important;
        align-items: center !important;
        justify-content: flex-start !important;
        background: transparent !important;
        border: none !important;
        padding: 0 !important;
        font-weight: normal !important;
        font-size: 15px !important;
        color: var(--text-dark) !important;
        box-shadow: none !important;
        margin: 10px auto !important;
        width: fit-content !important;
        max-width: 100% !important;
        transform: none !important;
        cursor: pointer !important;
    }
    .designer-checkbox-container:hover {
        background: transparent !important;
        border: none !important;
        color: var(--text-dark) !important;
        transform: none !important;
        box-shadow: none !important;
    }
    .designer-checkbox-container.checked {
        background: transparent !important;
        border: none !important;
        color: var(--text-dark) !important;
        box-shadow: none !important;
    }
    .designer-checkbox-container input[type="checkbox"] {
        display: inline-block !important;
        width: 18px !important;
        height: 18px !important;
        margin-right: 10px !important;
        cursor: pointer !important;
        accent-color: var(--primary-color) !important;
    }
}