/* ============================================
   TextCount Pro - Professional Styles
   E-A-T Optimized Design System
============================================ */

:root {
    /* Primary Color Palette */
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-300: #93c5fd;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --primary-900: #1e3a8a;

    /* Secondary Colors */
    --secondary: #10b981;
    --accent: #8b5cf6;
    --warning: #f59e0b;
    --danger: #ef4444;

    /* Neutral Colors */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-heading: 'Poppins', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;

    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: var(--font-primary);
    line-height: 1.75;
    color: var(--gray-800);
    background-color: var(--gray-50);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.25;
    color: var(--gray-900);
    margin-bottom: var(--spacing-lg);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2vw, 2rem); }
h4 { font-size: clamp(1.125rem, 1.5vw, 1.5rem); }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-md);
    max-width: 75ch;
}

a {
    color: var(--primary-600);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--primary-700);
    text-decoration: underline;
}

/* Container */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.container-sm { max-width: 768px; }
.container-md { max-width: 1024px; }
.container-lg { max-width: 1280px; }

/* Header & Navigation */
.site-header {
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%);
    color: white;
    padding: var(--spacing-lg) 0;
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-xl);
}

.site-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: white;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: 700;
    font-family: var(--font-heading);
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: white;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-600);
    font-size: 1.75rem;
    box-shadow: var(--shadow-md);
}

/* Navigation Menu */
.main-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-link {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius);
    transition: var(--transition);
    white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    text-decoration: none;
}

/* Language Selector */
.lang-selector {
    position: relative;
}

.lang-button {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius);
    color: white;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.lang-button:hover {
    background: rgba(255, 255, 255, 0.25);
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + var(--spacing-sm));
    right: 0;
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow-xl);
    min-width: 180px;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
}

.lang-selector:hover .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: block;
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--gray-800);
    text-decoration: none;
    transition: var(--transition);
    border-left: 3px solid transparent;
}

.lang-option:hover {
    background: var(--primary-50);
    border-left-color: var(--primary-600);
    color: var(--primary-600);
    text-decoration: none;
}

.lang-option.active {
    background: var(--primary-100);
    border-left-color: var(--primary-600);
    font-weight: 600;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 50%, var(--primary-800) 100%);
    color: white;
    padding: var(--spacing-3xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="rgba(255,255,255,0.1)" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,112C672,96,768,96,864,112C960,128,1056,160,1152,160C1248,160,1344,128,1392,112L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    color: white;
    margin-bottom: var(--spacing-lg);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.95);
    max-width: 800px;
    margin: 0 auto var(--spacing-2xl);
}

/* Tool Cards Grid */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin: var(--spacing-3xl) 0;
}

.tool-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 2px solid transparent;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.tool-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-200);
}

.tool-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow);
}

.tool-card h3 {
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
}

.tool-card p {
    color: var(--gray-600);
    margin-bottom: var(--spacing-lg);
    flex-grow: 1;
}

.tool-features {
    list-style: none;
    margin-bottom: var(--spacing-xl);
}

.tool-features li {
    padding: var(--spacing-xs) 0;
    color: var(--gray-700);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.tool-features li::before {
    content: '✓';
    color: var(--secondary);
    font-weight: 700;
    font-size: 1.25rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-weight: 600;
    border-radius: var(--radius);
    transition: var(--transition);
    cursor: pointer;
    border: none;
    text-decoration: none;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    color: white;
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-700), var(--primary-800));
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    text-decoration: none;
    color: white;
}

.btn-secondary {
    background: var(--gray-100);
    color: var(--gray-800);
}

.btn-secondary:hover {
    background: var(--gray-200);
    text-decoration: none;
    color: var(--gray-900);
}

/* Features Section */
.features-section {
    background: white;
    padding: var(--spacing-3xl) 0;
    margin: var(--spacing-3xl) 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-2xl);
}

.feature-item {
    text-align: center;
    padding: var(--spacing-xl);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-100), var(--primary-200));
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    box-shadow: var(--shadow);
}

/* Content Sections */
.content-section {
    background: white;
    padding: var(--spacing-3xl) 0;
    margin: var(--spacing-2xl) 0;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    position: relative;
    padding-bottom: var(--spacing-lg);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-500), var(--primary-600));
    border-radius: 2px;
}

/* Blog Grid */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-xl);
    margin: var(--spacing-2xl) 0;
}

.blog-card {
    background: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--gray-200);
}

.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.blog-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--primary-400), var(--primary-600));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
}

.blog-content {
    padding: var(--spacing-xl);
}

.blog-meta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    font-size: 0.875rem;
    color: var(--gray-500);
}

.blog-tag {
    background: var(--primary-100);
    color: var(--primary-700);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius);
    font-weight: 600;
}

.blog-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    color: var(--gray-900);
}

.blog-excerpt {
    color: var(--gray-600);
    margin-bottom: var(--spacing-lg);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Footer */
.site-footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
    margin-top: var(--spacing-3xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-title {
    color: white;
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
    font-weight: 600;
}

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

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: var(--gray-400);
    transition: var(--transition);
}

.footer-links a:hover {
    color: white;
    text-decoration: none;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--gray-800);
    color: var(--gray-500);
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .header-content {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .main-nav {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .nav-list {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-sm);
    }

    .nav-link {
        font-size: 0.875rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .hero {
        padding: var(--spacing-2xl) 0;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .tools-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .blog-grid {
        grid-template-columns: 1fr;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }
.mt-2xl { margin-top: var(--spacing-2xl); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }
.mb-2xl { margin-bottom: var(--spacing-2xl); }

.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }
.p-2xl { padding: var(--spacing-2xl); }

.bg-white { background: white; }
.bg-gray { background: var(--gray-50); }

/* Accessibility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus Visible */
*:focus-visible {
    outline: 3px solid var(--primary-500);
    outline-offset: 2px;
}