/**
 * Main stylesheet for WeLovePDF2.com
 * 
 * This file contains the main styles for the website.
 */

/* ===== RESET & BASE STYLES ===== */
:root {
    /* Color Variables */
    --primary-color: #4a6cf7;
    --primary-dark: #3a56d4;
    --primary-light: #6b89ff;
    --secondary-color: #ff6b6b;
    --text-color: #333333;
    --text-light: #666666;
    --text-lighter: #999999;
    --bg-color: #ffffff;
    --bg-light: #f5f7ff;
    --bg-dark: #e9ecf6;
    --border-color: #e0e0e0;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --error-color: #dc3545;
    --info-color: #17a2b8;
    
    /* Typography */
    --font-primary: 'Roboto', sans-serif;
    --font-secondary: 'Open Sans', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Border Radius */
    --border-radius-sm: 0.25rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 1rem;
    
    /* Box Shadow */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
    
    /* Container Width */
    --container-max-width: 1200px;
    --container-padding: 1rem;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--bg-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
    color: var(--text-color);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

h5 {
    font-size: 1.125rem;
}

h6 {
    font-size: 1rem;
}

p {
    margin-bottom: var(--spacing-md);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--primary-dark);
}

ul, ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

img {
    max-width: 100%;
    height: auto;
}

button, .btn {
    cursor: pointer;
    font-family: var(--font-primary);
    font-size: 1rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-md);
    transition: all 0.3s ease;
    border: none;
    display: inline-block;
    text-align: center;
    font-weight: 500;
}

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

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

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

.btn-secondary:hover {
    background-color: #e55c5c;
    color: white;
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

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

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* ===== LAYOUT ===== */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.site-main {
    flex: 1;
    padding: var(--spacing-lg) 0;
}

.section {
    margin-bottom: var(--spacing-xxl);
}

.section-header {
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.section-title {
    margin-bottom: var(--spacing-sm);
}

.section-description {
    color: var(--text-light);
    max-width: 800px;
    margin: 0 auto;
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -15px;
}

.col {
    padding: 0 15px;
    flex: 1;
}

/* ===== HEADER ===== */
.site-header {
    background-color: var(--bg-color);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
}

.logo a {
    display: block;
}

.logo img {
    height: 40px;
    width: auto;
}

/* ===== NAVIGATION ===== */
.main-navigation {
    display: flex;
}

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-item {
    position: relative;
    margin: 0 var(--spacing-sm);
}

.nav-link {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-color);
    font-weight: 500;
}

.nav-item.active .nav-link,
.nav-link:hover {
    color: var(--primary-color);
}

.dropdown .nav-link {
    display: flex;
    align-items: center;
}

.dropdown .nav-link i {
    margin-left: var(--spacing-xs);
    font-size: 0.75rem;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--bg-color);
    box-shadow: var(--shadow-md);
    border-radius: var(--border-radius-md);
    min-width: 200px;
    display: none;
    z-index: 1000;
    padding: var(--spacing-md);
    display: flex;
    flex-wrap: wrap;
    width: 800px;
    left: -200px;
}

.dropdown:hover .dropdown-menu {
    display: flex;
}

.dropdown-column {
    flex: 1;
    min-width: 200px;
    padding: 0 var(--spacing-md);
}

.dropdown-column h4 {
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-light);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: var(--spacing-xs);
}

.dropdown-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.dropdown-column ul li {
    margin-bottom: var(--spacing-xs);
}

.dropdown-column ul li a {
    color: var(--text-color);
    font-size: 0.9rem;
    display: block;
    padding: var(--spacing-xs) 0;
}

.dropdown-column ul li a:hover {
    color: var(--primary-color);
}

.dropdown-footer {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border-top: 1px solid var(--border-color);
    margin-top: var(--spacing-sm);
    text-align: center;
}

.all-tools-link {
    font-weight: 500;
    display: inline-flex;
    align-items: center;
}

.all-tools-link i {
    margin-left: var(--spacing-xs);
    font-size: 0.8rem;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    margin: 5px 0;
    transition: all 0.3s ease;
}

.mobile-navigation {
    display: none;
}

/* ===== FOOTER ===== */
.site-footer {
    background-color: #f8f9fa;
    padding: var(--spacing-xl) 0;
    margin-top: auto;
}

.footer-top {
    display: flex;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xl);
}

.footer-column {
    flex: 1;
    min-width: 200px;
    padding: 0 var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.footer-column h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
}

.footer-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-column ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-column ul li a {
    color: var(--text-light);
    font-size: 0.9rem;
}

.footer-column ul li a:hover {
    color: var(--primary-color);
}

.social-links {
    display: flex;
    margin-top: var(--spacing-md);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    margin-right: var(--spacing-sm);
    transition: all 0.3s ease;
}

.social-links a:hover {
    background-color: var(--primary-dark);
    transform: translateY(-3px);
}

.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.copyright p {
    margin: 0;
    color: var(--text-light);
    font-size: 0.9rem;
}

.domains p {
    margin: 0;
    color: var(--text-light);
    font-size: 0.9rem;
}

.domains a {
    color: var(--text-light);
}

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

/* ===== TOOL CARDS ===== */
.tool-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.tool-grid.columns-2 {
    grid-template-columns: repeat(2, 1fr);
}

.tool-grid.columns-4 {
    grid-template-columns: repeat(4, 1fr);
}

.tool-card {
    background-color: var(--bg-color);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    overflow: hidden;
    height: 100%;
}

.tool-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
}

.tool-card-link {
    display: flex;
    flex-direction: column;
    height: 100%;
    color: var(--text-color);
}

.tool-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    padding: var(--spacing-md);
}

.tool-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tool-badges {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.tool-badge {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    border-radius: var(--border-radius-sm);
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
}

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

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

.tool-card-body {
    padding: 0 var(--spacing-md);
    flex: 1;
}

.tool-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.tool-description {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
}

.tool-card-footer {
    padding: var(--spacing-md);
    border-top: 1px solid var(--border-light);
}

.use-tool-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 500;
    color: var(--primary-color);
}

.use-tool-btn i {
    margin-left: var(--spacing-xs);
    transition: transform 0.3s ease;
}

.tool-card:hover .use-tool-btn i {
    transform: translateX(5px);
}

/* ===== HERO SECTION ===== */
.hero-section {
    background-color: var(--bg-light);
    padding: var(--spacing-xxl) 0;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

/* ===== FEATURES SECTION ===== */
.features-section {
    padding: var(--spacing-xxl) 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.feature-card {
    text-align: center;
    padding: var(--spacing-lg);
}

.feature-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.feature-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.feature-description {
    color: var(--text-light);
}

/* ===== TESTIMONIALS SECTION ===== */
.testimonials-section {
    background-color: var(--bg-light);
    padding: var(--spacing-xxl) 0;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.testimonial-card {
    background-color: var(--bg-color);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-lg);
}

.testimonial-content {
    font-style: italic;
    margin-bottom: var(--spacing-md);
}

.testimonial-author {
    display: flex;
    align-items: center;
}

.testimonial-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    overflow: hidden;
    margin-right: var(--spacing-md);
}

.testimonial-info h4 {
    margin-bottom: 0;
    font-size: 1rem;
}

.testimonial-info p {
    margin: 0;
    color: var(--text-light);
    font-size: 0.875rem;
}

/* ===== NEWSLETTER SECTION ===== */
.newsletter-section {
    padding: var(--spacing-xxl) 0;
    text-align: center;
}

.newsletter-form {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
}

.newsletter-input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md) 0 0 var(--border-radius-md);
    font-size: 1rem;
}

.newsletter-button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.newsletter-button:hover {
    background-color: var(--primary-dark);
}

/* ===== AD CONTAINERS ===== */
.ad-container {
    margin: var(--spacing-lg) 0;
    text-align: center;
}

.ad-label {
    font-size: 0.75rem;
    color: var(--text-lighter);
    text-align: center;
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
}

.ad-unit {
    margin: 0 auto;
}

.ad-blocked-message {
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    background-color: var(--bg-light);
    text-align: center;
}

.ad-blocked-message p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-light);
}

/* ===== BACK TO TOP BUTTON ===== */
#back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
    box-shadow: var(--shadow-md);
}

#back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

#back-to-top:hover {
    background-color: var(--primary-dark);
    transform: translateY(-5px);
}