* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Poppins', sans-serif; line-height: 1.7; color: #1a1a2e; background: linear-gradient(135deg, #1a1a2e, #16213e, #0f3460); min-height: 100vh; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
header { background: rgba(255,255,255,0.1); backdrop-filter: blur(20px); padding: 20px 0; position: sticky; top: 0; z-index: 100; }
.logo { font-size: 28px; font-weight: 800; background: linear-gradient(45deg, #00d9ff, #00ff88); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
nav a { color: rgba(255,255,255,0.8); text-decoration: none; margin-left: 30px; font-weight: 500; }
.hero { background: linear-gradient(135deg, rgba(0,217,255,0.2), rgba(0,255,136,0.2)); padding: 80px 0; text-align: center; }
.hero h1 { font-size: 48px; background: linear-gradient(45deg, #00d9ff, #00ff88); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
main { padding: 50px 0; }
.tools-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 25px; }
.tool-card { background: rgba(255,255,255,0.08); backdrop-filter: blur(10px); border-radius: 20px; padding: 25px; border: 1px solid rgba(0,217,255,0.2); transition: all 0.4s; }
.tool-card:hover { transform: translateY(-8px); background: rgba(255,255,255,0.15); border-color: #00d9ff; }
.tool-card .icon { width: 60px; height: 60px; background: linear-gradient(135deg, #00d9ff, #00ff88); border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 28px; margin-bottom: 15px; }
.tool-card h3 { color: #fff; font-size: 18px; margin-bottom: 8px; }
.tool-card p { color: rgba(255,255,255,0.6); font-size: 13px; }
.tool-card a { display: inline-block; margin-top: 12px; padding: 10px 20px; background: linear-gradient(45deg, #00d9ff, #00ff88); color: #1a1a2e; text-decoration: none; border-radius: 25px; font-weight: 600; font-size: 14px; }
footer { background: rgba(0,0,0,0.4); color: rgba(255,255,255,0.5); padding: 30px 0; text-align: center; }
.tool-page { background: rgba(255,255,255,0.95); border-radius: 25px; padding: 40px; margin: 30px auto; max-width: 850px; }
.tool-page h1 { background: linear-gradient(45deg, #00d9ff, #00ff88); -webkit-background-clip: text; -webkit-text-fill-color: transparent; font-size: 28px; }
.tool-page .desc { color: #666; margin-bottom: 20px; }
.tool-page input, .tool-page textarea { width: 100%; padding: 14px 18px; border: 2px solid #e0e0e0; border-radius: 12px; font-size: 16px; margin-bottom: 15px; }
.tool-page input:focus, .tool-page textarea:focus { outline: none; border-color: #00d9ff; }
.tool-page button { padding: 12px 24px; background: linear-gradient(45deg, #00d9ff, #00ff88); color: #1a1a2e; border: none; border-radius: 25px; font-weight: 600; cursor: pointer; margin-right: 10px; }
.tool-page .result { background: linear-gradient(135deg, #f8f9fa, #e9ecef); padding: 20px; border-radius: 12px; margin-top: 20px; min-height: 80px; }
.back-link { color: #00d9ff; text-decoration: none; font-weight: 600; }
.info-box { background: linear-gradient(135deg, rgba(0,217,255,0.1), rgba(0,255,136,0.1)); padding: 15px; border-radius: 12px; margin-bottom: 20px; border-left: 4px solid #00d9ff; }