/* ===================================
   PdfPeaks - Modern PDF & Image Tools
   =================================== */

/* Bootstrap Icons */
@import url("https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.0/font/bootstrap-icons.css");

/* Root Variables */
:root {
    --primary-color: #0d6efd;
    --primary-hover: #0b5ed7;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
    --light-bg: #f8f9fa;
    --dark-bg: #212529;
    --border-radius: 12px;
    --transition-speed: 0.3s;
}

/* Reset & Base */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    color: #212529;
    background-color: #fff;
}

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

.display-1 { font-size: 3.5rem; }
.display-2 { font-size: 3rem; }
.display-3 { font-size: 2.5rem; }
.display-4 { font-size: 2rem; }

/* Container */
.container {
    max-width: 1400px;
}

/* Cards */
.card {
    border: 1px solid #dee2e6;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: box-shadow var(--transition-speed) ease;
}

.card:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.card-header {
    background-color: #fff;
    border-bottom: 1px solid #dee2e6;
    font-weight: 600;
}

.card-footer {
    background-color: #fff;
    border-top: 1px solid #dee2e6;
}

/* Buttons */
.btn {
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    transition: all var(--transition-speed) ease;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(13, 110, 253, 0.25);
}

.btn-success {
    background-color: var(--success-color);
    border-color: var(--success-color);
}

.btn-success:hover {
    background-color: #157347;
    border-color: #157347;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(25, 135, 84, 0.25);
}

.btn-outline-primary:hover,
.btn-outline-primary.active {
    color: #fff;
}

/* Forms */
.form-control,
.form-select {
    border-radius: 8px;
    border: 1px solid #ced4da;
    padding: 0.75rem 1rem;
    transition: border-color var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.15);
}

.form-label {
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.form-check-input:checked + .form-check-label {
    background-color: #e7f1ff;
    border-color: var(--primary-color);
}

/* Drop Zone */
.drop-zone {
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    border-style: dashed !important;
}

.drop-zone:hover {
    border-style: solid !important;
}

/* Tool Cards Grid */
.tool-card {
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    border: 1px solid #dee2e6;
    border-radius: var(--border-radius);
    overflow: hidden;
    text-decoration: none !important;
}

.tool-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
    border-color: var(--primary-color);
}

.tool-card .card-body {
    padding: 2rem 1.5rem;
}

.tool-card .card-footer {
    padding: 1rem 1.5rem;
    background-color: transparent;
}

.tool-card:hover .card-footer .btn {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
}

.tool-icon {
    height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tool-icon i {
    font-size: 4.5rem;
    transition: transform var(--transition-speed) ease;
}

.tool-card:hover .tool-icon i {
    transform: scale(1.1);
}

/* File List */
.file-item {
    cursor: grab;
    transition: all 0.2s ease;
    user-select: none;
}

.file-item:hover {
    background-color: #f8f9fa;
}

.file-item:active {
    cursor: grabbing;
}

.file-item.dragging {
    opacity: 0.5;
    transform: scale(1.02);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.file-icon {
    flex-shrink: 0;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    backdrop-filter: blur(4px);
}

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

.spinner-container h4 {
    margin-top: 1.5rem;
}

/* Page Numbering Display */
.page-item {
    cursor: pointer;
    transition: all 0.2s ease;
}

.page-item:hover {
    background-color: #e9ecef;
}

.page-item.selected {
    background-color: var(--primary-color) !important;
    border-color: var(--primary-color) !important;
    color: #fff !important;
}

/* Progress Bar */
.progress {
    height: 8px;
    border-radius: 4px;
    background-color: #e9ecef;
}

.progress-bar {
    border-radius: 4px;
    transition: width 0.6s ease;
}

/* Alert */
.alert {
    border-radius: var(--border-radius);
    border: none;
}

.alert-success {
    background-color: #d1e7dd;
    color: #0f5132;
}

.alert-danger {
    background-color: #f8d7da;
    color: #842029;
}

.alert-info {
    background-color: #cff4fc;
    color: #055160;
}

/* Range Slider */
.form-range::-webkit-slider-thumb {
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.2s ease;
}

.form-range::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

.form-range::-moz-range-thumb {
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
}

/* Badge */
.badge {
    font-weight: 500;
    padding: 0.5em 0.75em;
    border-radius: 6px;
}

/* Image Preview */
.preview-image {
    max-width: 100%;
    max-height: 400px;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Crop Rectangle */
.crop-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 10;
    pointer-events: auto;
}

.crop-rectangle {
    position: absolute;
    border: 2px solid #fff;
    box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.5);
    cursor: move;
    z-index: 20;
    pointer-events: auto;
}

.resize-handle {
    position: absolute;
    width: 14px;
    height: 14px;
    background: #fff;
    border: 2px solid var(--primary-color);
    border-radius: 3px;
    z-index: 30;
    pointer-events: auto;
}

.resize-handle.nw { top: -7px; left: -7px; cursor: nw-resize; }
.resize-handle.ne { top: -7px; right: -7px; cursor: ne-resize; }
.resize-handle.sw { bottom: -7px; left: -7px; cursor: sw-resize; }
.resize-handle.se { bottom: -7px; right: -7px; cursor: se-resize; }

/* Feature Icons */
.feature-icon i {
    transition: transform 0.3s ease;
}

.feature-icon:hover i {
    transform: scale(1.1);
}

/* Navbar */
.navbar {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.navbar-brand {
    font-weight: 600;
}

/* Footer */
footer {
    background-color: #f8f9fa;
    border-top: 1px solid #dee2e6;
}

/* Responsive */
@media (max-width: 768px) {
    .display-3 {
        font-size: 2rem;
    }
    
    .display-4 {
        font-size: 1.5rem;
    }
    
    .tool-card .card-body {
        padding: 1.5rem 1rem;
    }
    
    .tool-icon {
        height: 70px;
    }
    
    .tool-icon i {
        font-size: 3rem;
    }
    
    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
}

/* Animation Utilities */
.fade-in {
    animation: fadeIn 0.5s ease;
}

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

.slide-up {
    animation: slideUp 0.5s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Tooltip */
.tooltip {
    font-size: 0.875rem;
}

/* Sortable Ghost Class */
.sortable-ghost {
    opacity: 0.4;
    background-color: #e9ecef;
}

.sortable-drag {
    cursor: grabbing !important;
}

/* Loading Spinner */
.spinner-border {
    width: 3rem;
    height: 3rem;
    border-width: 4px;
}

.spinner-border-sm {
    width: 1.5rem;
    height: 1.5rem;
    border-width: 2px;
}

/* Utility Classes */
.text-primary { color: var(--primary-color) !important; }
.text-success { color: var(--success-color) !important; }
.text-danger { color: var(--danger-color) !important; }
.text-warning { color: var(--warning-color) !important; }
.text-info { color: var(--info-color) !important; }

.bg-primary { background-color: var(--primary-color) !important; }
.bg-success { background-color: var(--success-color) !important; }
.bg-danger { background-color: var(--danger-color) !important; }

.border-dashed { border-style: dashed !important; }

/* Focus States */
.btn:focus,
.form-control:focus,
.form-select:focus {
    outline: none;
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

/* Selection */
::selection {
    background-color: rgba(13, 110, 253, 0.2);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}