/* 
 * PDF Processor Styles
 * A clean, modern design for PDF processing website
 */

/* Base styles and variables */
:root {
    --primary-color: #4a6fa5;
    --secondary-color: #6f8ab7;
    --accent-color: #ff7e5f;
    --background-color: #f8f9fa;
    --card-bg-color: #ffffff;
    --text-color: #333333;
    --text-light: #6c757d;
    --border-color: #e0e0e0;
    --success-color: #28a745;
    --error-color: #dc3545;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

h1, h2, h3 {
    margin-bottom: 1rem;
    line-height: 1.2;
    color: var(--primary-color);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--accent-color);
}

.hidden {
    display: none !important;
}

/* Header Styles */
header {
    background-color: var(--primary-color);
    color: white;
    padding: 2rem 0;
    box-shadow: var(--box-shadow);
}

header h1 {
    color: white;
    font-size: 2.2rem;
    margin-bottom: 0.5rem;
}

header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

header i {
    margin-right: 0.5rem;
}

/* Main content sections */
main {
    padding: 2rem 0;
}

section {
    margin-bottom: 2rem;
}

/* Upload section */
.upload-section {
    margin-bottom: 2.5rem;
}

.upload-container {
    background-color: var(--card-bg-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
}

.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: 3rem 1rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 1rem;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background-color: rgba(74, 111, 165, 0.05);
}

.upload-area i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    display: block;
}

.upload-btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 30px;
    margin-top: 1rem;
    cursor: pointer;
    transition: var(--transition);
}

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

.file-info {
    padding: 1rem;
    background-color: rgba(74, 111, 165, 0.1);
    border-radius: var(--border-radius);
    color: var(--text-light);
}

/* Action section */
.action-section {
    background-color: var(--card-bg-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
}

.actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    padding: 0.7rem 1.5rem;
    border: none;
    border-radius: 30px;
    cursor: pointer;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    font-size: 1rem;
}

.btn i {
    margin-right: 0.5rem;
}

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

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

.primary-btn:hover:not(:disabled) {
    background-color: #3a5a8c;
}

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

.secondary-btn:hover:not(:disabled) {
    background-color: #5d7aa6;
}

/* Result section */
.result-section {
    background-color: var(--card-bg-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
}

/* Tabs */
.tabs {
    display: flex;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    padding: 0.7rem 1.5rem;
    background: none;
    border: none;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-light);
    border-bottom: 3px solid transparent;
    transition: var(--transition);
}

.tab-btn:hover {
    color: var(--primary-color);
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

/* Results display */
.result-container {
    position: relative;
}

.result-box {
    min-height: 200px;
    max-height: 500px;
    overflow-y: auto;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    white-space: pre-wrap;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
}

.placeholder-text {
    color: var(--text-light);
    text-align: center;
    margin-top: 2rem;
}

/* Loading indicator */
.loading-indicator {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.8);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 10;
    border-radius: var(--border-radius);
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(74, 111, 165, 0.2);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Footer */
footer {
    background-color: white;
    padding: 1.5rem 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-light);
    margin-top: 2rem;
}

footer a {
    font-weight: 600;
}

/* Responsive design */
@media (max-width: 768px) {
    .upload-area {
        padding: 2rem 1rem;
    }
    
    .actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .tabs {
        flex-direction: column;
        border-bottom: none;
    }
    
    .tab-btn {
        border-bottom: 1px solid var(--border-color);
        text-align: left;
    }
    
    .tab-btn.active {
        border-left: 3px solid var(--primary-color);
        border-bottom-color: var(--border-color);
        padding-left: 1.3rem;
    }
}