/* Global Variables & Resets - ilovepdf inspired */
:root {
    --primary: #e5322d;
    --primary-hover: #c42b26;
    --success: #10b981;
    --success-hover: #059669;
    --dark: #333333;
    --light: #f5f5f5;
    --white: #ffffff;
    --gray-400: #888888;
    --text: #444444;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --radius: 8px;
    --shadow: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-hover: 0 8px 24px rgba(0,0,0,0.12);
}

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

body {
    font-family: var(--font);
    color: var(--text);
    background-color: var(--light);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
.text-center { text-align: center; }
.hidden { display: none !important; }
.w-100 { width: 100%; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }

/* Layout Containers */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.container-fluid {
    width: 100%;
    padding: 80px 24px;
}

/* Typography */
h1, h2, h3, h4 { color: var(--dark); font-weight: 700; margin-bottom: 1rem; letter-spacing: -0.5px; }
h1 { font-size: 3rem; line-height: 1.2; margin-bottom: 1.5rem; }
h2 { font-size: 2.25rem; }

/* Navbar */
.navbar {
    background: var(--white);
    box-shadow: 0 2px 4px rgba(0,0,0,0.04);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.logo {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--dark);
    letter-spacing: -1px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo::before {
    content: '';
    display: inline-block;
    width: 24px;
    height: 24px;
    background-color: var(--primary);
    border-radius: 4px;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.8rem;
    color: var(--dark);
    cursor: pointer;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 24px;
}

.nav-links a {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--dark);
    transition: color 0.2s;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-links a:hover {
    color: var(--primary);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 16px 32px;
    border-radius: var(--radius);
    font-size: 1.125rem;
    font-weight: 700;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(229, 50, 45, 0.3);
}

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

.btn-success:hover {
    background: var(--success-hover);
    transform: translateY(-2px);
}

.btn-outline {
    background: var(--white);
    border: 2px solid var(--primary);
    color: var(--primary);
    box-shadow: none;
}

.btn-outline:hover {
    background: rgba(229, 50, 45, 0.05);
    color: var(--primary-hover);
    border-color: var(--primary-hover);
}

/* Hero Section */
.hero {
    padding: 80px 0 60px;
    background-color: var(--light);
}

.hero p {
    font-size: 1.25rem;
    color: var(--text);
    max-width: 700px;
    margin: 0 auto 40px;
    font-weight: 400;
}

.hero-badges {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.badge {
    background: var(--white);
    color: var(--dark);
    border: 1px solid #e0e0e0;
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}

/* Tool / Upload Section */
.tool-section {
    margin-bottom: 80px;
    margin-top: -30px;
}

.upload-container {
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow-hover);
    padding: 50px;
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    border: 1px solid #eaeaea;
}

.upload-box {
    border: 2px dashed #cccccc;
    border-radius: var(--radius);
    padding: 80px 20px;
    text-align: center;
    background-color: #fafafa;
    transition: all 0.3s ease;
    cursor: pointer;
}

.upload-box:hover {
    background-color: #f0f0f0;
    border-color: var(--primary);
}

.upload-box.dragover {
    border-color: var(--primary);
    background: rgba(229, 50, 45, 0.05);
}

.upload-box img {
    margin-bottom: 24px;
    width: 64px;
    height: 64px;
}

.upload-box h3 {
    font-size: 1.5rem;
    color: var(--dark);
    margin-bottom: 10px;
}

.upload-box p {
    color: var(--gray-400);
    margin-bottom: 20px;
}

.file-note {
    font-size: 0.9rem;
    color: var(--gray-400);
    margin-top: 20px !important;
}

/* Editor Area - Matches ilovepdf settings panel on the right */
.editor-box {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: 40px;
    align-items: start;
}

.preview-area {
    background: var(--light);
    border-radius: var(--radius);
    padding: 30px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 400px;
    border: 1px solid #eaeaea;
}

.preview-area img {
    max-width: 100%;
    max-height: 400px;
    border-radius: 4px;
    box-shadow: var(--shadow);
}

.options-area {
    background: var(--white);
}

.options-area h3 {
    font-size: 1.25rem;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid #eee;
}

.preset-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.preset-group label {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--white);
    padding: 16px;
    border-radius: var(--radius);
    cursor: pointer;
    border: 1px solid #dddddd;
    transition: all 0.2s;
    font-weight: 500;
    font-size: 0.95rem;
}

.preset-group label:hover {
    border-color: #bbbbbb;
    background-color: #fafafa;
}

.preset-group input[type="radio"] {
    accent-color: var(--primary);
    width: 20px;
    height: 20px;
}

.preset-group input[type="radio"]:checked + label,
.preset-group label:has(input:checked) {
    border-color: var(--primary);
    background: rgba(229, 50, 45, 0.05);
    color: var(--primary);
}

/* Result Box */
.result-box {
    text-align: center;
    padding: 60px 20px;
}

.result-box h3 {
    color: var(--dark); /* dark instead of success green to match ilovepdf's clean look */
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.result-box p {
    font-size: 1.1rem;
    margin-bottom: 15px;
}

.result-box .btn-success {
    background: var(--primary); /* Use primary red for download */
    padding: 20px 40px;
    font-size: 1.25rem;
    margin-top: 20px;
    border-radius: 50px;
}

.result-box .btn-success:hover {
    background: var(--primary-hover);
    box-shadow: 0 8px 16px rgba(229, 50, 45, 0.3);
}

/* UI Overlays */
#loadingOverlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(255,255,255,0.95);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border-radius: 12px;
    z-index: 10;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid #f3f3f3;
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 24px;
}

@keyframes spin {
    100% { transform: rotate(360deg); }
}

/* Features Grid */
.bg-light { background-color: var(--white); border-top: 1px solid #eaeaea; } /* Clean white section */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: 50px;
}

.feature-card, .step {
    padding: 40px 30px;
    background: var(--white);
    border-radius: var(--radius);
    text-align: center;
    border: 1px solid #f0f0f0; 
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover, .step:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.feature-card h3, .step h4 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.feature-card p, .step p {
    color: var(--gray-400);
}

.step-num {
    width: 48px;
    height: 48px;
    background: rgba(229, 50, 45, 0.1); /* Light red background */
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 800;
    margin: 0 auto 24px;
}

/* Footer */
footer {
    background: #111111; /* Very dark, almost black */
    color: #a0a0a0;
    padding: 80px 0 30px;
    margin-top: 80px;
    font-size: 0.95rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-col h3, .footer-col h4 {
    color: var(--white);
    margin-bottom: 24px;
    font-size: 1.25rem;
    letter-spacing: 0;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col a {
    transition: color 0.2s;
}

.footer-col a:hover {
    color: var(--white);
}

.copy-text {
    border-top: 1px solid #333333;
    padding-top: 30px;
    font-size: 0.875rem;
    color: #666666;
}

/* Blog Content Styles */
.blog-content {
    background: var(--white);
    padding: 60px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin: 60px auto;
    max-width: 800px;
    border: 1px solid #eaeaea;
}

.blog-content h2 {
    margin-top: 40px;
    font-size: 2rem;
}

.blog-content p, .blog-content li {
    font-size: 1.125rem;
    margin-bottom: 20px;
    color: #444;
}

.blog-content ul, .blog-content ol {
    margin-left: 24px;
    margin-bottom: 24px;
}

/* Responsive Overrides */
@media (max-width: 900px) {
    .editor-box {
        grid-template-columns: 1fr;
    }
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
        position: absolute;
        right: 20px;
        top: 20px;
    }
    .nav-content {
        flex-direction: column;
        height: auto;
        padding: 15px 20px;
        align-items: flex-start;
        position: relative;
    }
    .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        margin-top: 20px;
        gap: 15px;
        text-align: center;
    }
    .nav-links.active {
        display: flex;
    }
    .nav-links a {
        font-size: 0.85rem;
    }
    .hero {
        padding: 40px 0;
    }
    .hero h1 {
        font-size: 1.8rem;
        margin-bottom: 15px;
    }
    .hero p {
        font-size: 1rem;
    }
    .upload-container {
        padding: 20px;
    }
    .upload-box {
        padding: 40px 15px;
    }
    .upload-box h3 {
        font-size: 1.25rem;
    }
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 30px;
    }
    .grid-3 {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .preview-area {
        min-height: 200px;
        padding: 10px;
    }
    .preset-group label {
        padding: 12px;
        font-size: 0.95rem;
    }
    .btn {
        padding: 12px 24px;
        font-size: 1rem;
    }
    .result-box h3 {
        font-size: 1.8rem;
    }
}

/* Extra small devices */
@media (max-width: 480px) {
    .hero-badges {
        flex-direction: column;
        align-items: center;
    }
    .badge {
        width: 100%;
        text-align: center;
    }
    h2 {
        font-size: 1.5rem;
    }
}