/* --- OPEX INSTITUTE | ULTIMATE UNIVERSAL CSS (v7) --- */
* { box-sizing: border-box; margin: 0; padding: 0; }

body { 
    font-family: 'Inter', sans-serif; 
    background-color: #ffffff; 
    color: #1c1917; 
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 1.5rem; }
.text-center { text-align: center; }
.text-blue { color: #0184c1; }
.text-navy { color: #082645; }

/* --- FLAT UI (NO SHADOWS) --- */
.cta-button {
    display: inline-block;
    background-color: #0184c1;
    color: #ffffff;
    font-weight: 800;
    font-size: 1.1rem;
    padding: 1.2rem 2.8rem;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: background-color 0.2s ease;
    box-shadow: none !important;
}
.cta-button:hover { background-color: #082645; }

/* --- HEADER & HERO --- */
header { padding: 5rem 0; border-bottom: 1px solid #f1f5f9; }
.hero-title { 
    font-weight: 900; font-size: clamp(2.2rem, 8vw, 3.8rem); line-height: 1.05; 
    color: #0d1621; text-transform: uppercase; margin-bottom: 1.5rem; text-align: center; 
}
.hero-subtitle {
    font-weight: 700; font-size: 1.1rem; color: #0184c1; 
    text-transform: uppercase; letter-spacing: 2px; margin-bottom: 2rem; display: block; 
}

/* --- THE CONSOLIDATED HUB (VIDEO-FIRST) --- */
.opex-trainer-section { background: #f8fafc; padding: 60px 0; }
.sig-match-inner { 
    max-width: 850px; margin: 0 auto; padding: 40px; background: white; 
    border: 1px solid #e2e8f0; border-radius: 12px;
    display: flex; flex-direction: column; align-items: center; gap: 30px; 
}
.sig-label { font-size: 10px; font-weight: 800; color: #0184c1; text-transform: uppercase; letter-spacing: 1.5px; display: block; }
.aristotle-text { font-size: clamp(1.1rem, 4vw, 1.3rem); font-weight: 800; color: #082645; font-style: italic; line-height: 1.3; text-align: center; }

/* Flexible Video Frame */
.opex-video-frame { width: 100%; max-width: 320px; margin: 0 auto; }
.opex-video-container { 
    position: relative; width: 100%; background: #000; 
    border: 6px solid #0d1621; border-radius: 12px; overflow: hidden; 
}
.opex-video-container iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: 0; }

.founder-info-block { text-align: center; border-top: 1px solid #f1f5f9; padding-top: 30px; width: 100%; }
.founder-name { font-size: 1.8rem; font-weight: 900; color: #0d1621; text-transform: uppercase; margin-bottom: 5px; }
.founder-creds { font-size: 0.85rem; color: #0184c1; font-weight: 800; text-transform: uppercase; letter-spacing: 0.5px; }

/* --- COMPARISON TILES --- */
.comparison-grid { display: grid; gap: 2rem; margin: 4rem 0; }
@media (min-width: 768px) { .comparison-grid { grid-template-columns: repeat(3, 1fr); } }
.comparison-tile { background: #ffffff; border: 1px solid #e2e8f0; border-radius: 8px; padding: 2rem; text-align: center; }
.comparison-tile h4 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 1px; color: #0184c1; margin-bottom: 1.5rem; font-weight: 800; }
.role-box { padding: 10px; border-radius: 4px; margin-bottom: 10px; font-size: 0.9rem; }
.role-old { background: #f8fafc; color: #64748b; }
.role-new { background: rgba(1, 132, 193, 0.05); color: #082645; font-weight: 700; border: 1px solid rgba(1, 132, 193, 0.2); }

/* --- ROI BOX --- */
.roi-box { background: #082645; color: #ffffff; padding: 4rem 2rem; border-radius: 8px; margin: 4rem 0; }
.roi-features-inline { display: flex; justify-content: center; gap: 25px; font-weight: 700; font-size: 0.95rem; }

/* --- FOOTER & TRUST LINKS --- */
.footer-link { color: inherit; text-decoration: none; border-bottom: 1px solid rgba(8, 38, 69, 0.2); transition: 0.3s ease; }
.footer-link:hover { color: #0184c1; border-bottom-color: #0184c1; }

@media (max-width: 768px) {
    .hero-title { text-align: center !important; }
    .cta-button { display: block; width: 100%; text-align: center; padding: 1.4rem 1rem; }
    .roi-features-inline { flex-direction: column; gap: 10px; align-items: center; }
    .opex-video-frame { max-width: 85% !important; }
    .sig-match-inner { padding: 30px 15px; }
}