:root {
    --primary: #2563EB;
    --dark: #1E293B;
    --light: #F1F5F9;
    --white: #ffffff;
}
* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Inter', sans-serif; }
body { background: #F8FAFC; color: var(--dark); }

/* Grid Layout */
.container { max-width: 1100px; margin: 0 auto; padding: 40px 20px; }
.tools-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; }
.tool-card { background: var(--white); padding: 30px; border-radius: 15px; text-align: center; cursor: pointer; transition: 0.3s; box-shadow: 0 4px 6px rgba(0,0,0,0.05); }
.tool-card:hover { transform: translateY(-5px); box-shadow: 0 10px 15px rgba(0,0,0,0.1); }
.icon-box { font-size: 24px; color: var(--primary); margin-bottom: 15px; background: #EFF6FF; width: 50px; height: 50px; display: flex; align-items: center; justify-content: center; border-radius: 50%; margin-left: auto; margin-right: auto; }

/* Workspace */
.tool-workspace { background: var(--white); padding: 30px; border-radius: 15px; margin-top: 20px; box-shadow: 0 10px 25px rgba(0,0,0,0.1); }
.workspace-header { display: flex; align-items: center; gap: 20px; margin-bottom: 20px; border-bottom: 1px solid #eee; padding-bottom: 10px; }
.back-btn { background: #eee; border: none; padding: 8px 16px; border-radius: 6px; cursor: pointer; }

/* Upload & Result */
.upload-area { border: 2px dashed #CBD5E1; padding: 40px; text-align: center; border-radius: 10px; cursor: pointer; }
.settings-panel { background: #F8FAFC; padding: 20px; border-radius: 10px; margin-bottom: 20px; display: flex; gap: 15px; flex-wrap: wrap; justify-content: center; align-items: center; }
.result-container { display: flex; flex-wrap: wrap; gap: 20px; }
.img-box { flex: 1; background: #fff; padding: 10px; border: 1px solid #eee; border-radius: 8px; text-align: center; }
.img-box img { max-width: 100%; height: auto; margin-top: 10px; max-height: 400px; object-fit: contain;}

/* Inputs */
input[type="number"], select { padding: 8px; border: 1px solid #ddd; border-radius: 5px; }
.btn-primary, .btn-primary-lg { background: var(--primary); color: white; padding: 10px 20px; border-radius: 6px; text-decoration: none; border: none; cursor: pointer; }
.btn-primary-lg { display: inline-block; background: #059669; }

/* Navbar & Hero */
.navbar { display: flex; justify-content: space-between; padding: 15px 5%; background: white; box-shadow: 0 2px 5px rgba(0,0,0,0.05); }
.hero { text-align: center; padding: 60px 20px; background: linear-gradient(to bottom, #EFF6FF, #F8FAFC); }
.logo { font-weight: 800; font-size: 1.4rem; color: var(--primary); }
.nav-links { display: flex; gap: 20px; list-style: none; }
.nav-links a { text-decoration: none; color: var(--dark); }
.seo-content { text-align: center; padding: 40px 20px; background: white; margin-top: 40px; }

@media (max-width: 600px) { .result-container { flex-direction: column; } .nav-links { display: none; } }