:root {
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --bg-color: #f8fafc;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --card-bg: rgba(255, 255, 255, 0.8);
    --border-color: rgba(0,0,0,0.05);
    
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    background-image: radial-gradient(at 0% 0%, hsla(210,100%,92%,1) 0, transparent 50%), radial-gradient(at 100% 100%, hsla(210,100%,92%,1) 0, transparent 50%);
    background-attachment: fixed;
    min-height: 100vh;
}

* {
    box-sizing: border-box;
}

/* Navbar */
.navbar {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 50;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.2s;
    margin-left: 2rem;
}

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

/* Hero Section */
.hero {
    text-align: center;
    padding: 6rem 1rem;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    background: linear-gradient(135deg, #1e293b, var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
}

/* Search Bar */
.search-container {
    max-width: 600px;
    margin: 0 auto 3rem;
    position: relative;
}

.search-input {
    width: 100%;
    padding: 1rem 1.5rem;
    font-size: 1.1rem;
    border: 2px solid white;
    border-radius: 99px;
    background: white;
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
    outline: none;
    transition: all 0.3s;
}

.search-input:focus {
    border-color: var(--primary);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.15);
}

/* Tools Grid */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem 4rem;
}

.section-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 2rem;
    text-align: center;
}

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

.tool-card {
    background: var(--card-bg);
    border: 1px solid white;
    border-radius: 16px;
    padding: 1.5rem;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
    display: flex;
    align-items: center;
    backdrop-filter: blur(10px);
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.08);
    border-color: var(--primary);
}

.tool-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.tool-info h3 {
    margin: 0 0 0.25rem 0;
    font-size: 1.1rem;
    font-weight: 600;
}

.tool-info p {
    margin: 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Ads */
.ad-banner {
    background: #e2e8f0;
    color: var(--text-secondary);
    text-align: center;
    padding: 2rem;
    margin: 2rem auto;
    border-radius: 12px;
    max-width: 728px;
    font-size: 0.9rem;
    border: 1px dashed #cbd5e1;
}

/* Tool Interface */
.tool-page {
    max-width: 800px;
    margin: 3rem auto;
    background: white;
    padding: 3rem;
    border-radius: 24px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.05);
}

.tool-page h1 {
    text-align: center;
    margin-bottom: 1rem;
}

.tool-page > p {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.upload-area {
    border: 2px dashed #cbd5e1;
    border-radius: 16px;
    padding: 4rem 2rem;
    text-align: center;
    background: #f8fafc;
    transition: all 0.3s;
    cursor: pointer;
    margin-bottom: 2rem;
}

.upload-area:hover, .upload-area.dragover {
    border-color: var(--primary);
    background: rgba(59, 130, 246, 0.05);
}

.upload-icon {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.btn {
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.3s;
}

.btn:hover {
    background: var(--primary-hover);
}

/* Footer */
footer {
    background: white;
    padding: 3rem 2rem;
    text-align: center;
    border-top: 1px solid var(--border-color);
    margin-top: 4rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    margin: 0 1rem;
}

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

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
}