/* Premium Styles for PDF Edit */
:root {
    --primary-color: #6366f1; /* Indigo */
    --primary-gradient: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
    --surface-color: #ffffff;
    --background-color: #f8fafc;
    --border-color: #e2e8f0;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --canvas-bg: #e5e7eb;
}

body {
    background-color: var(--background-color);
}

.tool-header {
    background: white;
    padding: 40px 15px;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.02);
}

.upload-area {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border: 2px dashed #cbd5e1;
    border-radius: 24px;
    padding: 60px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}

@media (min-width: 768px) {
    .upload-area {
        padding: 80px 40px;
    }
}

.upload-area::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 0;
}

.upload-area:hover, .upload-area.dragover {
    border-color: transparent;
    transform: translateY(-5px);
    box-shadow: 0 20px 40px -5px rgba(99, 102, 241, 0.2);
}

.upload-area:hover::before, .upload-area.dragover::before {
    opacity: 0.03;
}

.upload-content {
    position: relative;
    z-index: 1;
}

.upload-icon-wrapper {
    width: 80px;
    height: 80px;
    background: #eef2ff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.5);
    animation: pulse 2s infinite;
}

@media (min-width: 768px) {
    .upload-icon-wrapper {
        width: 100px;
        height: 100px;
        margin: 0 auto 24px;
    }
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.4); }
    70% { box-shadow: 0 0 0 20px rgba(99, 102, 241, 0); }
    100% { box-shadow: 0 0 0 0 rgba(99, 102, 241, 0); }
}

.btn-premium {
    background: var(--primary-gradient);
    color: white;
    border: none;
    padding: 12px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-premium:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.4);
    color: white;
}

/* Editor Specific Styles */
.editor-toolbar {
    background: #f1f5f9;
}

.toolbar-btn {
    height: 38px;
    padding: 0 12px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.2s;
    border: 1px solid transparent;
    flex-shrink: 0;
    white-space: nowrap;
}

.toolbar-btn.active, .toolbar-btn:hover {
    background-color: #eef2ff;
    color: var(--primary-color);
    border-color: #c7d2fe;
}

.toolbar-divider {
    width: 1px;
    height: 30px;
    background-color: #cbd5e1;
    margin: 0 5px;
}

.thumbnails-sidebar {
    width: 220px;
    min-width: 220px;
    max-width: 220px;
    overflow-y: auto;
}

.thumbnail-wrapper {
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.2s;
}

.thumbnail-wrapper.active {
    border-color: var(--primary-color);
    background: #eef2ff;
}

.thumbnail-wrapper canvas {
    max-width: 100%;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.canvas-container-wrapper {
    background-color: var(--canvas-bg);
}

.pdf-page-container {
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    background: white;
    margin: 0 auto;
}

.pdf-page-container canvas {
    display: block;
}

.form-control-color {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: 8px;
}

/* Custom Scrollbar for premium feel */
.custom-scrollbar::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

.custom-scrollbar::-webkit-scrollbar-track {
    background: transparent;
}

.custom-scrollbar::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 10px;
}

.custom-scrollbar::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}