/* Global Reset & Base */
* { box-sizing: border-box; margin: 0; padding: 0; }
body { 
    font-family: 'Inter', sans-serif; 
    background-color: #f8fafc; 
    color: #0f172a; 
    line-height: 1.5; 
    -webkit-font-smoothing: antialiased;
}

.container { max-width: 1152px; margin: 0 auto; padding: 0 1.5rem; }
.text-center { text-align: center; }
.text-indigo { color: #1e3a8a; }
.text-amber { color: #b45309; }

/* Header */
header { 
    background-color: #f1f5f9; 
    padding: 4rem 0 7rem; 
    border-bottom-left-radius: 4rem; 
    border-bottom-right-radius: 4rem; 
    box-shadow: 0 10px 25px -5px rgba(30, 58, 138, 0.1);
    border-bottom: 3px solid #e2e8f0;
}

h1 { font-size: clamp(2.2rem, 8vw, 3rem); font-weight: 800; line-height: 1.1; margin-bottom: 1.5rem; }
.subtitle { font-size: 1.35rem; color: #475569; margin-bottom: 1rem; }
.highlight-text { font-size: 1.6rem; font-weight: 700; color: #b45309; }

/* Creative Sigma Cards */
.creative-grid { display: flex; flex-direction: column; gap: 2rem; margin-bottom: 4rem; }

.sigma-card {
    background: white;
    border-radius: 1rem;
    padding: 2.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    border: 1px solid #e2e8f0;
}

.sigma-card-inner {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.side-old, .side-new { flex: 1; }
.side-old { color: #64748b; }
.side-new { color: #0f172a; border-left: 3px solid #1e3a8a; padding-left: 2rem; }

.label { 
    font-size: 0.75rem; 
    font-weight: 800; 
    text-transform: uppercase; 
    display: block; 
    margin-bottom: 0.5rem;
    letter-spacing: 0.1em;
}

.side-arrow { 
    background: #1e3a8a;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.8rem;
    font-weight: 800;
}

@media (max-width: 768px) {
    .sigma-card-inner { flex-direction: column; text-align: center; }
    .side-new { border-left: none; border-top: 3px solid #1e3a8a; padding-left: 0; padding-top: 1.5rem; }
    .side-arrow { transform: rotate(90deg); margin: 1rem 0; }
}

/* UI Elements */
.cta-button {
    display: inline-block;
    background-color: #1e3a8a;
    color: white;
    font-weight: 800;
    font-size: 1.25rem;
    padding: 1.4rem 3.5rem;
    border-radius: 0.5rem;
    text-transform: uppercase;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 10px 15px -3px rgba(30, 58, 138, 0.3);
}
.cta-button:hover { transform: translateY(-3px); background-color: #1e40af; }

/* Profile Card & Signature */
.signature-text { 
    font-size: 0.95rem; 
    line-height: 1.6; 
    margin: 1.5rem 0; 
    padding: 1rem 0;
    border-top: 1px solid #f1f5f9;
    border-bottom: 1px solid #f1f5f9;
}

.grid { display: grid; gap: 2rem; margin-top: 4rem; }
@media (min-width: 768px) { .grid { grid-template-columns: 1.2fr 0.8fr; } }

.card { background: white; padding: 3.5rem 2rem; border-radius: 1rem; box-shadow: 0 10px 25px rgba(0,0,0,0.05); }
.card-amber { border-top: 6px solid #b45309; }
.card-text { font-size: 1.05rem; font-weight: 600; color: #334155; max-width: 350px; margin: 0 auto; }

.profile-img { 
    width: 130px; height: 130px; border-radius: 50%; 
    border: 4px solid #1e3a8a; margin-bottom: 1.5rem; 
}

/* Banner & Footer */
.banner { 
    background: #0f172a; 
    padding: 5rem 2rem; border-radius: 1.5rem; color: white; margin: 5rem 0; 
}
.banner h2 { font-size: 2.5rem; margin-bottom: 2rem; }
.details-link { color: #94a3b8; font-weight: 600; text-decoration: underline; }

footer { padding: 4rem 0; background: #f1f5f9; text-align: center; }
.copyright { color: #64748b; font-size: 0.85rem; font-weight: 700; text-transform: uppercase; }