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

:root {
    /* Dark Theme Colors */
    --bg-primary: hsl(15, 12%, 8%);
    --bg-secondary: hsl(15, 10%, 12%);
    --bg-tertiary: hsl(15, 8%, 16%);
    --bg-elevated: hsl(15, 8%, 20%);
    
    /* Text Colors */
    --text-primary: hsl(0, 0%, 98%);
    --text-secondary: hsl(0, 0%, 70%);
    --text-tertiary: hsl(0, 0%, 50%);
    
    /* Brand Colors */
    --color-purple: hsl(260, 85%, 65%);
    --color-cyan: hsl(200, 95%, 55%);
    --color-green: hsl(140, 70%, 55%);
    --color-orange: hsl(35, 95%, 60%);
    --color-pink: hsl(320, 75%, 65%);
    --color-blue: hsl(220, 90%, 60%);
    
    /* Borders */
    --border-default: hsl(0, 0%, 20%);
    --border-hover: hsl(0, 0%, 30%);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Typography */
    --font-display: 'Poppins', 'Inter', system-ui, sans-serif;
    --font-body: 'Inter', system-ui, sans-serif;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* Transitions */
    --transition: all 0.2s ease-in-out;
}

/* Global Styles */
html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Navigation */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgba(15, 12, 10, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-default);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
}

.logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 800;
    text-decoration: none;
}

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

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(135deg, var(--color-purple), var(--color-cyan));
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 0.25rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-toggle span {
    width: 1.5rem;
    height: 2px;
    background-color: var(--text-primary);
    transition: var(--transition);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 4rem;
    left: 0;
    right: 0;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-default);
    padding: 1rem;
    z-index: 99;
}

.mobile-menu.active {
    display: block;
}

.mobile-nav-link {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.75rem 1rem;
    transition: var(--transition);
}

.mobile-nav-link:hover {
    color: var(--text-primary);
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-md);
}

/* Hero Section */
.hero {
    padding: 6rem 0 4rem;
    text-align: center;
    position: relative;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.2;
    max-width: 1100px;
    margin: 0 auto 1.5rem;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto 2.5rem;
}

.search-container {
    position: relative;
    max-width: 600px;
    margin: 0 auto;
}

.search-input {
    width: 100%;
    padding: 1rem 3rem 1rem 1.5rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-purple);
    box-shadow: 0 0 0 3px rgba(167, 139, 250, 0.1);
}

.search-icon {
    position: absolute;
    right: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    pointer-events: none;
}

/* Promotional Section */
.promo-section {
    padding: 4rem 0;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
}

.promo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.promo-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-2xl);
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
}

.promo-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-hover);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.promo-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.promo-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.promo-description {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.promo-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 0.9375rem;
}

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

.promo-btn-primary:hover {
    background-color: hsl(260, 85%, 60%);
    transform: translateY(-2px);
}

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

.promo-btn-success:hover {
    background-color: hsl(140, 70%, 50%);
    transform: translateY(-2px);
}

.promo-btn-warning {
    background-color: var(--color-orange);
    color: white;
}

.promo-btn-warning:hover {
    background-color: hsl(35, 95%, 55%);
    transform: translateY(-2px);
}

/* Categories Section */
.categories-section {
    padding: 2rem 0 1rem;
}

.category-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}

.category-chip {
    padding: 0.625rem 1.25rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-default);
    border-radius: 9999px;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.category-chip:hover,
.category-chip.active {
    background-color: var(--color-purple);
    color: white;
    border-color: var(--color-purple);
}

/* Tools Section */
.tools-section {
    padding: 3rem 0 5rem;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

.tool-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-2xl);
    padding: 2rem;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.tool-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-hover);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.tool-logo {
    margin-bottom: 1.25rem;
}

.logo-placeholder {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.5rem;
    color: white;
}

.logo-purple { background: linear-gradient(135deg, var(--color-purple), hsl(280, 85%, 65%)); }
.logo-cyan { background: linear-gradient(135deg, var(--color-cyan), hsl(200, 95%, 65%)); }
.logo-green { background: linear-gradient(135deg, var(--color-green), hsl(140, 70%, 65%)); }
.logo-orange { background: linear-gradient(135deg, var(--color-orange), hsl(35, 95%, 70%)); }
.logo-pink { background: linear-gradient(135deg, var(--color-pink), hsl(320, 75%, 75%)); }
.logo-blue { background: linear-gradient(135deg, var(--color-blue), hsl(220, 90%, 70%)); }

.tool-name {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.tool-badge {
    display: inline-block;
    padding: 0.375rem 0.75rem;
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.tool-description {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.tool-btn {
    display: inline-block;
    width: 100%;
    padding: 0.75rem 1.5rem;
    background-color: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    text-decoration: none;
    text-align: center;
    font-weight: 600;
    transition: var(--transition);
}

.tool-btn:hover {
    background-color: var(--color-purple);
    border-color: var(--color-purple);
    transform: translateY(-2px);
}

/* Benefits Section */
.benefits-section {
    padding: 5rem 0;
    background-color: var(--bg-secondary);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.benefit-card {
    text-align: center;
    padding: 2rem;
}

.benefit-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.benefit-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.benefit-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Footer */
.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-default);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.footer-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

.footer-heading {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

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

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--color-purple);
}

.footer-text {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.newsletter-form {
    display: flex;
    gap: 0.5rem;
}

.newsletter-input {
    flex: 1;
    padding: 0.75rem 1rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9375rem;
}

.newsletter-input:focus {
    outline: none;
    border-color: var(--color-purple);
}

.newsletter-btn {
    padding: 0.75rem 1.5rem;
    background-color: var(--color-purple);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.newsletter-btn:hover {
    background-color: hsl(260, 85%, 60%);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-default);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero {
        padding: 4rem 0 3rem;
    }
    
    .promo-grid,
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
}

/* Hidden Class for Filtering */
.hidden {
    display: none !important;
}