/*
 * PDFMaster Pro - Modern Stylesheet (sasikoa.css)
 */

:root {
    --bg-primary: #0b0f19;
    --bg-secondary: #111827;
    --bg-card: rgba(17, 24, 39, 0.7);
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --accent: #60a5fa;
    --border-color: rgba(255, 255, 255, 0.08);
    --success: #10b981;
    --error: #ef4444;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-heading: 'Outfit', var(--font-sans);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --radius-lg: 16px;
    --radius-md: 10px;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Header & Logo */
.site-header {
    background-color: rgba(11, 15, 25, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 700;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 0.2rem;
}

.logo-accent {
    color: var(--primary);
    background: linear-gradient(135deg, var(--accent), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-badge {
    font-size: 0.75rem;
    background: rgba(59, 130, 246, 0.2);
    border: 1px solid rgba(59, 130, 246, 0.4);
    color: var(--accent);
    padding: 0.1rem 0.4rem;
    border-radius: 4px;
    margin-left: 0.3rem;
}

/* Navigation Menu */
.nav-menu {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-list a, .dropdown-trigger {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.nav-list a:hover, .dropdown-trigger:hover {
    color: #fff;
}

/* Dropdowns */
.dropdown {
    position: relative;
}

.arrow-down {
    border: solid var(--text-secondary);
    border-width: 0 2px 2px 0;
    display: inline-block;
    padding: 2.5px;
    transform: rotate(45deg);
    transition: var(--transition);
}

.dropdown:hover .arrow-down {
    transform: rotate(-135deg);
    border-color: #fff;
}

.dropdown-content {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.8rem;
    min-width: 220px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.dropdown:hover .dropdown-content {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown-content li {
    list-style: none;
}

.dropdown-content a {
    display: block;
    padding: 0.6rem 1rem;
    border-radius: 6px;
    font-size: 0.9rem;
}

.dropdown-content a:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--accent);
}

.lang-switch-btn {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(96, 165, 250, 0.1));
    border: 1px solid rgba(59, 130, 246, 0.3);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    color: #fff !important;
}

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

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.mobile-toggle .bar {
    width: 25px;
    height: 2px;
    background-color: var(--text-primary);
    transition: var(--transition);
}

/* Hero Section */
.site-main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
    min-height: 80vh;
}

.hero {
    text-align: center;
    margin-bottom: 4rem;
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #fff, var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto;
}

/* Card UI - Grid Layout */
.section-title {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--primary);
    padding-left: 0.8rem;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3.5rem;
}

.tool-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.tool-card:hover {
    transform: translateY(-5px);
    border-color: rgba(59, 130, 246, 0.4);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    background: rgba(17, 24, 39, 0.9);
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0;
    transition: var(--transition);
}

.tool-card:hover::before {
    opacity: 1;
}

.tool-card-content h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
    color: #fff;
}

.tool-card-content p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.tool-btn {
    align-self: flex-start;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent);
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.tool-btn i {
    transition: var(--transition);
}

.tool-card:hover .tool-btn i {
    transform: translateX(4px);
}

/* Footer */
.site-footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 4rem 2rem 2rem 2rem;
    margin-top: 5rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.5fr repeat(3, 1fr);
    gap: 3rem;
    margin-bottom: 3rem;
}

.brand-tagline {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 1rem;
    max-width: 320px;
}

.footer-links h4 {
    font-family: var(--font-heading);
    color: #fff;
    margin-bottom: 1.2rem;
    font-size: 1.1rem;
}

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

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.footer-links a:hover {
    color: #fff;
    padding-left: 4px;
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .mobile-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--bg-secondary);
        border-bottom: 1px solid var(--border-color);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease-out;
    }
    
    .nav-menu.active {
        max-height: 500px;
    }
    
    .nav-list {
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        align-items: stretch;
    }
    
    .dropdown-content {
        position: static;
        transform: none;
        opacity: 1;
        visibility: visible;
        box-shadow: none;
        background: rgba(255, 255, 255, 0.02);
        margin-top: 0.5rem;
        padding-left: 1.5rem;
    }
    
    .dropdown:hover .dropdown-content {
        transform: none;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
}

/* ==========================================
 * Drag & Drop Workspace Styling
 * ========================================== */
.tool-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 0;
}

.tool-header-area {
    text-align: center;
    margin-bottom: 2.5rem;
}

.tool-header-area h1 {
    font-family: var(--font-heading);
    font-size: 2.4rem;
    color: #fff;
    margin-bottom: 0.6rem;
    background: linear-gradient(135deg, #fff, var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.tool-header-area p {
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.workspace-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 3rem;
    box-shadow: var(--shadow);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    margin-bottom: 3.5rem;
    position: relative;
}

.drop-zone {
    border: 2px dashed rgba(59, 130, 246, 0.3);
    border-radius: var(--radius-lg);
    padding: 1rem 1.5rem;
    text-align: center;
    background: rgba(17, 24, 39, 0.4);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 110px;
    position: relative;
    cursor: pointer;
}

.drop-zone:hover, .drop-zone.dragover {
    border-color: var(--accent);
    background: rgba(59, 130, 246, 0.08);
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.2);
}

.drop-zone-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
}

.upload-icon {
    font-size: 2.2rem;
    margin-bottom: 0.1rem;
    transition: var(--transition);
    display: inline-block;
}

.drop-zone:hover .upload-icon {
    transform: translateY(-2px) scale(1.05);
}

.drop-zone p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.3;
}

/* Compact drop-zones (e.g. Compare Tool) */
.drop-zone[style*="height: 80px"] {
    min-height: 80px;
}
.drop-zone[style*="height: 80px"] .upload-icon {
    font-size: 1.5rem;
    margin-bottom: 0px;
}
.drop-zone[style*="height: 80px"] .drop-zone-content {
    gap: 0.2rem;
}
.drop-zone[style*="height: 80px"] p {
    font-size: 0.75rem;
}

.upload-btn {
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    color: #fff;
    padding: 0.8rem 2.2rem;
    border-radius: 30px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid rgba(255,255,255,0.08);
    display: inline-block;
    margin-top: 0.5rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.upload-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.execute-btn {
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    border: none;
    color: #fff;
    padding: 0.9rem 2.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 30px;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    transition: var(--transition);
    display: inline-block;
}

.execute-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.info-section {
    margin-top: 2.5rem; /* ~40px spacing above How to and FAQ */
}

.info-section h2 {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    color: #fff;
    margin-bottom: 1.2rem;
}

/* ==========================================
 * FAQ Accordion Styling
 * ========================================== */
.faq-accordion {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    margin-top: 1.5rem;
}

.faq-item {
    background: var(--bg-card) !important;
    border: 1px solid var(--border-color) !important;
    padding: 1rem 1.5rem !important;
    border-radius: var(--radius-md) !important;
    cursor: pointer;
    transition: var(--transition);
    list-style: none;
    display: block;
}

.faq-item:hover {
    border-color: rgba(59, 130, 246, 0.3) !important;
    background: rgba(255, 255, 255, 0.02) !important;
}

.faq-item summary {
    font-weight: 600;
    outline: none;
    user-select: none;
    color: #fff;
}

.faq-item p {
    margin-top: 0.8rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}