/* All-in-One PDF Toolkit Styles */

/* === GLOBAL STYLES === */
:root {
    /* Core Color Palette - Dark Theme (Default) */
    --primary-bg: #0a0d14;
    --secondary-bg: #111827;
    --tertiary-bg: #1e293b;
    --accent-color-1: #00f0ff;
    --accent-color-2: #e100ff;
    --accent-color-3: #5061ff;
    --text-primary: #f5f7fa;
    --text-secondary: #94a3b8;
    
    /* PDF Specific Colors */
    --pdf-red: #dc2626;
    --pdf-green: #059669;
    --pdf-blue: #2563eb;
    --pdf-orange: #ea580c;
    
    /* Functional Colors */
    --glass-bg: rgba(18, 24, 38, 0.7);
    --card-border: rgba(0, 240, 255, 0.2);
    --glass-highlight: rgba(255, 255, 255, 0.05);
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    
    /* Animation Timing */
    --transition-fast: 0.3s;
    --transition-medium: 0.5s;
    --transition-slow: 0.8s;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

/* Light Theme Variables */
body.light-theme {
    --primary-bg: #ffffff;
    --secondary-bg: #f8fafc;
    --tertiary-bg: #e2e8f0;
    --accent-color-1: #0ea5e9;
    --accent-color-2: #8b5cf6;
    --accent-color-3: #3b82f6;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --glass-bg: rgba(255, 255, 255, 0.9);
    --card-border: rgba(14, 165, 233, 0.3);
    --glass-highlight: rgba(255, 255, 255, 0.6);
}

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

body {
    font-family: 'Orbitron', monospace;
    background: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* Header Styles */
header {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--card-border);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: var(--spacing-sm) 0;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

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

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-color-1), var(--accent-color-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.back-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--tertiary-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.back-btn:hover {
    background: var(--accent-color-1);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 240, 255, 0.3);
}

.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--tertiary-bg);
    border: 1px solid var(--card-border);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--accent-color-2);
    transform: scale(1.1);
}

/* Main Content */
.main-content {
    padding: var(--spacing-xl) 0;
    min-height: calc(100vh - 200px);
}

/* Hero Section */
.hero-section {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, var(--glass-bg), transparent);
    border-radius: var(--radius-xl);
    border: 1px solid var(--card-border);
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--accent-color-1), var(--accent-color-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-color-1);
}

.stat-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

/* Tools Section */
.tools-section {
    margin-bottom: var(--spacing-xl);
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
}

.tool-category {
    margin-bottom: var(--spacing-xl);
}

.category-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--accent-color-1);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.tool-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
    pointer-events: none;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.tool-card:active {
    transform: translateY(-2px) scale(0.98);
}

.tool-card:hover::before {
    left: 100%;
}

.tool-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--accent-color-1), var(--accent-color-2));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    position: relative;
    z-index: 1;
}

.tool-icon i {
    font-size: 1.5rem;
    color: white;
}

.tool-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    position: relative;
    z-index: 1;
}

.tool-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    position: relative;
    z-index: 1;
}

.tool-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    position: relative;
    z-index: 1;
}

.tag {
    padding: 4px 8px;
    background: var(--tertiary-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    color: var(--accent-color-1);
}

/* Features Section */
.features-section {
    margin-bottom: var(--spacing-xl);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.feature-card:hover {
    transform: translateY(-3px);
    border-color: var(--accent-color-2);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, var(--accent-color-2), var(--accent-color-3));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon i {
    font-size: 2rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
}

/* Footer */
footer {
    background: var(--tertiary-bg);
    border-top: 1px solid var(--card-border);
    padding: var(--spacing-lg) 0;
    text-align: center;
    color: var(--text-secondary);
}

/* PDF Toolkit Logo Styles */
.pdf-toolkit-logo {
    display: flex;
    align-items: center;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 0;
    height: 100%;
}

.pdf-toolkit-icon {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}

.pdf-toolkit-icon .fa-file-pdf {
    font-size: 2.2rem;
    color: var(--pdf-red);
    background: linear-gradient(45deg, var(--pdf-red), var(--accent-color-3));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: pulse-glow 2s infinite alternate;
}

.privacy-badge {
    background: linear-gradient(90deg, var(--accent-color-1), var(--accent-color-3));
    border-radius: var(--radius-md);
    padding: 0.15rem 0.5rem;
    position: relative;
    margin-top: 0.25rem;
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
    transform: scale(0.8);
}

.privacy-text {
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    white-space: nowrap;
    display: flex;
    align-items: center;
    justify-content: center;
}

.privacy-text .fa-lock {
    margin: 0 0.2rem;
    color: var(--success-color);
}

@keyframes pulse-glow {
    0% {
        filter: drop-shadow(0 0 2px rgba(0, 240, 255, 0.3));
    }
    100% {
        filter: drop-shadow(0 0 6px rgba(0, 240, 255, 0.8));
    }
}

/* Responsive adjustments for the logo */
@media (max-width: 768px) {
    .pdf-toolkit-logo {
        position: static;
        transform: none;
        margin-left: var(--spacing-sm);
        margin-right: auto;
    }
    
    header .container {
        justify-content: flex-start;
        flex-wrap: wrap;
    }
    
    .logo {
        margin-right: auto;
    }
}

@media (max-width: 576px) {
    .pdf-toolkit-logo {
        display: none;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .hero-stats {
        gap: var(--spacing-lg);
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-right {
        gap: var(--spacing-sm);
    }
    
    .back-btn span {
        display: none;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.5rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .tool-card {
        padding: var(--spacing-md);
    }
    
    .category-title {
        font-size: 1.2rem;
    }
}

/* Hamburger Menu for Mobile */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    width: 30px;
    height: 30px;
    justify-content: space-around;
}

.hamburger .line {
    width: 100%;
    height: 3px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--card-border);
    border-radius: 50%;
    border-top-color: var(--accent-color-1);
    animation: spin 1s ease-in-out infinite;
}

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

/* Success/Error Messages */
.message {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    margin: var(--spacing-sm) 0;
    border-left: 4px solid;
}

.message.success {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--success-color);
    color: var(--success-color);
}

.message.error {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--error-color);
    color: var(--error-color);
}

.message.warning {
    background: rgba(245, 158, 11, 0.1);
    border-color: var(--warning-color);
    color: var(--warning-color);
}

/* Scroll Behavior */
html {
    scroll-behavior: smooth;
}

/* Selection Styles */
::selection {
    background: var(--accent-color-1);
    color: white;
}

::-moz-selection {
    background: var(--accent-color-1);
    color: white;
}

/* Loading and interaction enhancements */
.tool-card {
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.tool-card:active {
    transform: translateY(-2px) scale(0.98);
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
    pointer-events: none;
}

.tool-card:hover::before {
    left: 100%;
}

.loading-indicator {
    position: absolute !important;
    top: 50% !important;
    left: 50% !important;
    transform: translate(-50%, -50%) !important;
    background: rgba(0, 0, 0, 0.9) !important;
    color: var(--accent-color-1) !important;
    padding: 15px !important;
    border-radius: 50% !important;
    z-index: 1000 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    box-shadow: 0 4px 15px rgba(0, 240, 255, 0.3) !important;
}

.loading-indicator i {
    font-size: 1.2rem !important;
    animation: spin 1s linear infinite !important;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Enhanced hover effects for Security & Enhancement tools */
.tool-card[data-tool="watermark-tool"]:hover,
.tool-card[data-tool="password-protection"]:hover,
.tool-card[data-tool="pdf-unlock"]:hover,
.tool-card[data-tool="pdf-info"]:hover {
    border-color: var(--accent-color-1);
    box-shadow: 0 10px 30px rgba(0, 240, 255, 0.2);
}

.tool-card[data-tool="watermark-tool"]:hover .tool-icon,
.tool-card[data-tool="password-protection"]:hover .tool-icon,
.tool-card[data-tool="pdf-unlock"]:hover .tool-icon,
.tool-card[data-tool="pdf-info"]:hover .tool-icon {
    background: linear-gradient(135deg, var(--accent-color-1), var(--accent-color-2));
    box-shadow: 0 5px 15px rgba(0, 240, 255, 0.4);
}

/* Click animation for Security & Enhancement tools */
.tool-card[data-tool="watermark-tool"]:active,
.tool-card[data-tool="password-protection"]:active,
.tool-card[data-tool="pdf-unlock"]:active,
.tool-card[data-tool="pdf-info"]:active {
    transform: translateY(-2px) scale(0.95);
    box-shadow: 0 5px 15px rgba(0, 240, 255, 0.3);
}