/* Premium Frontend Styles */
:root {
    --primary: #072d6e;
    --primary-hover: #051d48;
    --primary-light: #e6ecf7;
    --bg-main: #ffffff;
    --bg-secondary: #f8fafc;
    --text-dark: #0f172a;
    --text-muted: #64748b;
    --border-soft: #e2e8f0;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 18px;
    --radius-full: 9999px;
    --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.04);
    --shadow-hover: 0 10px 30px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-dark);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.site-header {
    background: var(--bg-main);
    border-bottom: 1px solid var(--border-soft);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-desktop {
    display: flex;
    gap: 30px;
}

.nav-desktop a {
    color: var(--text-dark);
    font-weight: 500;
    font-size: 15px;
}

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

.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.btn-primary {
    background-color: var(--primary);
    color: white !important;
    padding: 10px 24px;
    border-radius: var(--radius-full);
    font-weight: 500;
    font-size: 14px;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 4px 12px rgba(7, 45, 110, 0.2);
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 80px 20px 60px;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-main) 100%);
}

.hero-badge {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary);
    padding: 6px 16px;
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 24px;
}

.hero h1 {
    font-size: 48px;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.hero p {
    font-size: 18px;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 40px;
}

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

.search-input {
    width: 100%;
    padding: 20px 24px;
    font-size: 16px;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
    outline: none;
    font-family: inherit;
}

.search-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-light);
}

/* Tool Cards */
.section-title {
    font-size: 24px;
    font-weight: 700;
    margin: 60px 0 30px;
}

.grid-tools {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.tool-card {
    background: var(--bg-main);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-md);
    padding: 24px;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

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

.tool-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    font-size: 24px;
}

.tool-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.tool-card p {
    font-size: 14px;
    color: var(--text-muted);
}

/* Footer */
.site-footer {
    background: var(--bg-secondary);
    padding: 80px 0 40px;
    margin-top: 80px;
    border-top: 1px solid var(--border-soft);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-col h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
}

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

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    color: var(--text-muted);
    font-size: 14px;
}

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

/* Language Selector */
.lang-selector-wrapper {
    border-top: 1px solid var(--border-soft);
    padding-top: 40px;
    text-align: center;
}

.lang-title {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-muted);
}

.lang-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

.lang-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-main);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-full);
    font-size: 13px;
    color: var(--text-dark);
    transition: var(--transition);
}

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

/* Responsive */
@media (max-width: 768px) {
    .nav-desktop, .header-right {
        display: none;
    }
    .hero h1 {
        font-size: 32px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}