:root {
    --primary: #001f3f;       /* Deep Navy Corporate Core */
    --accent: #ff4500;        /* High-Octane Energetic Orange */
    --brand-green: #bfca02;   /* SGL Signature Design Balance */
    --verified: #1da1f2;      /* SGL Verified Blue Tick Token */
    --dark: #121212;          /* Off-Black Text/Background Elements */
    --light: #fafafa;         /* Ultra Clean Minimal Background */
    --white: #ffffff;
    --grey-border: #cbd5e1;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; background-color: var(--light); color: var(--dark); line-height: 1.6; padding-bottom: 60px; }

.main-header { background-color: var(--primary); color: var(--white); padding: 15px 40px; display: flex; justify-content: space-between; align-items: center; position: sticky; top: 0; z-index: 1000; box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
.logo-sgl { background-color: var(--accent); color: var(--white); padding: 4px 8px; font-weight: 900; border-radius: 4px; letter-spacing: 1px; }
.logo-text { font-weight: 700; letter-spacing: 2px; margin-left: 5px; color: var(--brand-green); }

.main-nav { display: flex; align-items: center; gap: 20px; }
.main-nav a { color: var(--white); text-decoration: none; font-size: 13px; font-weight: 600; transition: color 0.2s; }
.main-nav a:hover { color: var(--brand-green); }
.btn-nav-accent { background: var(--accent); padding: 8px 16px; border-radius: 4px; color: var(--white) !important; }

.app-container { min-height: 85vh; padding: 40px 20px; max-width: 1200px; margin: 0 auto; }
h2.section-title { border-left: 5px solid var(--accent); padding-left: 12px; margin-bottom: 25px; font-weight: 800; text-transform: uppercase; letter-spacing: -0.5px; color: var(--primary); }

input[type="text"], input[type="email"], input[type="password"], input[type="number"], select, textarea { width: 100%; padding: 12px 16px; margin: 8px 0 20px 0; border: 1px solid var(--grey-border); border-radius: 6px; font-size: 14px; background: var(--white); }
input:focus, select:focus, textarea:focus { border-color: var(--primary); outline: none; box-shadow: 0 0 0 3px rgba(0,31,63,0.1); }

button, .btn { background-color: var(--accent); color: var(--white); border: none; padding: 12px 24px; font-size: 14px; font-weight: 700; border-radius: 6px; cursor: pointer; text-decoration: none; display: inline-block; text-align: center; transition: opacity 0.2s; }
button:hover, .btn:hover { opacity: 0.9; }
.btn-secondary { background-color: var(--primary); color: var(--white); }
.btn-green { background-color: var(--brand-green); color: var(--dark); }

.results-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 25px; margin-top: 25px; }
.athlete-card { background: var(--white); border: 1px solid var(--grey-border); border-radius: 12px; padding: 24px; box-shadow: 0 4px 6px rgba(0,0,0,0.02); position: relative; display: flex; flex-direction: column; justify-content: space-between; }
.blue-tick-badge { background-color: var(--verified); color: var(--white); font-size: 11px; padding: 2px 8px; border-radius: 20px; font-weight: 700; display: inline-flex; align-items: center; gap: 4px; }

.sgl-table { width: 100%; border-collapse: collapse; background: var(--white); border-radius: 8px; overflow: hidden; margin-top: 15px; box-shadow: 0 4px 6px rgba(0,0,0,0.01); }
.sgl-table th, .sgl-table td { padding: 16px; text-align: left; border-bottom: 1px solid var(--grey-border); font-size: 14px; }
.sgl-table th { background-color: var(--primary); color: var(--white); font-weight: 600; text-transform: uppercase; font-size: 12px; letter-spacing: 0.5px; }
.sgl-table tr:hover { background-color: rgba(0,0,0,0.01); }

/* Then vs Now Slider Structural Engine */
.slider-container { position: relative; width: 100%; height: 350px; overflow: hidden; border-radius: 12px; box-shadow: 0 8px 16px rgba(0,0,0,0.1); }
.slider-img { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background-size: cover; background-position: center; }
.slider-before { width: 50%; border-right: 3px solid var(--accent); z-index: 2; }
.slider-range { position: absolute; top: 0; left: 0; width: 100%; height: 100%; opacity: 0; cursor: ew-resize; z-index: 3; }

.main-footer { background-color: var(--dark); color: #a0aec0; padding: 40px 20px; font-size: 13px; margin-top: 80px; border-top: 4px solid var(--brand-green); }

/* Mobile Adaptability Matrix overrides */
@media(max-width: 768px) {
    .main-header { flex-direction: column; gap: 15px; padding: 15px 20px; text-align: center; }
    .main-nav { flex-wrap: wrap; justify-content: center; gap: 12px; }
    .results-grid { grid-template-columns: 1fr; }
    .slider-container { height: 260px; }
}