/* Minimalist PDF Converter Design */

:root {
    --primary-color: #2563eb;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --white: #ffffff;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--white);
    color: var(--gray-800);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

/* Navigation */
.navbar {
    background: var(--white) !important;
    border-bottom: 1px solid var(--gray-200);
    box-shadow: none;
    padding: 1rem 0;
}

.navbar-brand {
    font-weight: 600;
    font-size: 1.25rem;
    color: var(--gray-900) !important;
}

.nav-link {
    color: var(--gray-600) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.nav-link:hover {
    background-color: var(--gray-100);
    color: var(--gray-900) !important;
}

/* Hero Section */
.hero-section {
    background: var(--white);
    padding: 4rem 0;
    text-align: center;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Feature Grid */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    padding: 2rem 0;
}

.feature-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.1);
}

.feature-card.disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.feature-card.disabled:hover {
    transform: none;
    box-shadow: none;
    border-color: var(--gray-200);
}

.feature-icon {
    width: 64px;
    height: 64px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 1.5rem;
    color: var(--white);
}

.feature-icon.docx {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
}

.feature-icon.excel {
    background: linear-gradient(135deg, #10b981, #059669);
}

.feature-icon.powerpoint {
    background: linear-gradient(135deg, #ef4444, #dc2626);
}

.feature-icon.image {
    background: linear-gradient(135deg, #f59e0b, #d97706);
}

.feature-icon.merge {
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
}

.feature-icon.compress {
    background: linear-gradient(135deg, #06b6d4, #0891b2);
}

.feature-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
}

.feature-description {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: 1rem;
}

.feature-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.badge-free {
    background-color: #dcfce7;
    color: #166534;
}

.badge-premium {
    background-color: #fef3c7;
    color: #92400e;
}

/* Buttons */
.btn {
    border-radius: 8px;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    text-decoration: none;
    display: inline-block;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
}

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

.btn-primary:hover {
    background-color: #1d4ed8;
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: var(--gray-100);
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
}

.btn-secondary:hover {
    background-color: var(--gray-200);
}

.btn-disabled {
    background-color: var(--gray-300);
    color: var(--gray-500);
    cursor: not-allowed;
}

.btn-disabled:hover {
    transform: none;
}

/* User Info */
.user-info {
    background: var(--gray-50);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    text-align: center;
}

.balance-info {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    padding: 0.5rem 1rem;
    background: var(--white);
    border-radius: 6px;
    font-weight: 500;
    color: var(--gray-700);
}

/* Cards */
.card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    overflow: hidden;
}

.card-header {
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
    padding: 1rem 1.5rem;
    font-weight: 600;
    color: var(--gray-900);
}

.card-body {
    padding: 1.5rem;
}

/* Alerts */
.alert {
    border-radius: 8px;
    padding: 1rem;
    border: none;
    margin-bottom: 1rem;
}

.alert-info {
    background-color: #dbeafe;
    color: #1e40af;
}

.alert-success {
    background-color: #dcfce7;
    color: #166534;
}

.alert-warning {
    background-color: #fef3c7;
    color: #92400e;
}

.alert-danger {
    background-color: #fee2e2;
    color: #991b1b;
}

/* Footer */
footer {
    background: var(--gray-50);
    border-top: 1px solid var(--gray-200);
    padding: 2rem 0;
    text-align: center;
    color: var(--gray-600);
    margin-top: auto;
}

/* Forms */
.form-control {
    border: 1px solid var(--gray-300);
    border-radius: 8px;
    padding: 0.75rem;
    transition: all 0.2s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-label {
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

.form-text {
    color: var(--gray-500);
    font-size: 0.875rem;
}

/* Progress bar */
.progress {
    height: 8px;
    border-radius: 4px;
    background-color: var(--gray-200);
}

.progress-bar {
    background: linear-gradient(90deg, var(--primary-color), #3b82f6);
    border-radius: 4px;
}

/* List group */
.list-group-item {
    border: none;
    border-bottom: 1px solid var(--gray-200);
    padding: 1rem 0;
    transition: background-color 0.2s ease;
}

.list-group-item:last-child {
    border-bottom: none;
}

.list-group-item:hover {
    background-color: var(--gray-50);
}

/* File name truncation */
.file-name {
    max-width: 250px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    cursor: help;
}

.file-name:hover {
    color: var(--primary-color);
}

/* Table file names */
.table td .file-name {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* Recent conversions styling */
.conversion-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.conversion-info {
    flex: 1;
    min-width: 0; /* Allow flex item to shrink */
}

.conversion-actions {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Status indicators */
.status-processing {
    animation: pulse 1.5s ease-in-out infinite alternate;
}

@keyframes pulse {
    from { opacity: 0.6; }
    to { opacity: 1; }
}

/* Badges */
.badge {
    font-weight: 500;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

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

.bg-warning {
    background-color: var(--warning-color) !important;
}

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

.bg-secondary {
    background-color: var(--gray-500) !important;
}

/* Utilities */
.text-muted {
    color: var(--gray-500) !important;
}

.fw-medium {
    font-weight: 500;
}

/* Drag and Drop Styling */
.drag-drop-area {
    border: 2px dashed var(--gray-300);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    background-color: var(--gray-50);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    min-height: 120px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.drag-drop-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.drag-drop-area:hover {
    border-color: var(--primary-color);
    background-color: #f0f7ff;
}

.drag-drop-area.drag-over {
    border-color: var(--primary-color);
    background-color: #f0f7ff;
    border-style: solid;
    transform: scale(1.02);
}

.drag-drop-area.file-selected {
    border-color: var(--success-color);
    background-color: #f0fdf4;
}

.drag-drop-icon {
    font-size: 48px;
    color: var(--gray-400);
    margin-bottom: 1rem;
    transition: all 0.3s ease;
}

.drag-drop-area:hover .drag-drop-icon,
.drag-drop-area.drag-over .drag-drop-icon {
    color: var(--primary-color);
    transform: scale(1.1);
}

.drag-drop-area.file-selected .drag-drop-icon {
    color: var(--success-color);
}

.drag-drop-text {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

.drag-drop-hint {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.file-input-hidden {
    position: absolute;
    opacity: 0;
    pointer-events: none;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
}

.selected-file-info {
    background: var(--white);
    border: 1px solid var(--success-color);
    border-radius: 8px;
    padding: 1rem;
    margin-top: 1rem;
    display: none;
}

.selected-file-info.show {
    display: block;
}

.file-details {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.file-icon {
    font-size: 24px;
    color: var(--primary-color);
}

.file-meta {
    flex: 1;
}

.file-name-display {
    font-weight: 500;
    color: var(--gray-900);
    margin-bottom: 0.25rem;
}

.file-size-display {
    font-size: 0.875rem;
    color: var(--gray-600);
}

.file-remove {
    background: none;
    border: none;
    color: var(--danger-color);
    cursor: pointer;
    font-size: 16px;
    padding: 0.25rem;
    border-radius: 4px;
    transition: background-color 0.2s ease;
}

.file-remove:hover {
    background-color: var(--gray-100);
}

/* Animation for file upload feedback */
@keyframes fileUploadSuccess {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.drag-drop-area.file-uploaded {
    animation: fileUploadSuccess 0.3s ease;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .feature-card {
        padding: 1.5rem;
    }
    
    .balance-info {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .drag-drop-area {
        padding: 1.5rem;
        min-height: 100px;
    }
    
    .drag-drop-icon {
        font-size: 36px;
    }
    
    .drag-drop-text {
        font-size: 1rem;
    }
}