:root {
  --primary: #007b5e;
  --max-width: 1100px;
  --padding: 20px;
  font-family: Arial, sans-serif;
}

body { margin: 0; line-height: 1.6; color: #333; }
.container { max-width: var(--max-width); margin: auto; padding: 0 var(--padding); }

/* Header */
.site-header { background: #fff; border-bottom: 1px solid #eee; position: sticky; top: 0; z-index: 100; }
.header-flex { display: flex; align-items: center; justify-content: space-between; }
.logo { margin: 0; font-size: 1.4rem; font-weight: bold; color: var(--primary); }
.logo-img { height: 60px; margin-right: 10px; }
nav a { margin-left: 15px; text-decoration: none; color: #333; font-weight: 500; }

/* Hero */
.hero { background: linear-gradient(135deg, #dfffe7, #f0f9f4); padding: 80px 0; text-align: center; }
.hero h2 { margin: 0 0 10px; font-size: 2.2rem; color: var(--primary); }
.btn { display: inline-block; margin-top: 20px; padding: 12px 24px; background: var(--primary); color: white; font-weight: bold; border-radius: 8px; text-decoration: none; }

/* About */
.about { padding: 40px 0; }

/* Courses */
.courses .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; margin-top: 20px; }
.card { border: 1px solid #eee; padding: 20px; border-radius: 10px; background: #fff; box-shadow: 2px 2px 10px rgba(0,0,0,0.05); }
.card h3 { margin-top: 0; color: var(--primary); }

/* Why Us */
.why { padding: 40px 0; background: #fafafa; border-radius: 10px; margin-top: 20px; }
.why ul { list-style: none; padding: 0; }
.why li { padding: 8px 0; }

/* Toppers Gallery */
.toppers { padding: 40px 0; }
.toppers h2 { text-align: center; color: var(--primary); }
.toppers .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; margin-top: 20px; text-align: center; }
.student img { width: 100%; max-width: 220px; border-radius: 10px; box-shadow: 2px 2px 10px rgba(0,0,0,0.1); transition: transform 0.3s ease; }
.student img:hover { transform: scale(1.05); }
.student p { margin-top: 10px; font-size: 0.95rem; }

/* Contact & Map */
.contact, .map { padding: 40px 0; }

/* Footer */
.site-footer { text-align: center; padding: 20px; background: #f8f8f8; border-top: 1px solid #eee; margin-top: 30px; }
.site-footer .credit { font-size: 0.85rem; margin-top: 5px; }

/* Floating Buttons */
.floating-icons { position: fixed; bottom: 20px; right: 20px; display: flex; flex-direction: column; gap: 12px; z-index: 200; }
.floating-icons a { width: 50px; height: 50px; display: flex; align-items: center; justify-content: center; border-radius: 50%; font-size: 22px; color: #fff; text-decoration: none; box-shadow: 2px 2px 8px rgba(0,0,0,0.3); }
.call-btn { background: #28a745; }
.whatsapp-btn { background: #25D366; }