/* Base Structural Layout Elements */
.breadcrumb-bar { background:var(--bg); border-bottom:1px solid var(--border); padding:10px 20px; font-size:0.8rem; color:var(--textcolor); }
.breadcrumb-bar a { color:#00AAFE; text-decoration:none; }
.breadcrumb-bar a:hover { text-decoration:underline; }

.page-wrap { max-width:1200px; margin:0 auto; padding:32px 16px 60px; display:grid; grid-template-columns:1fr 268px; gap:24px; align-items:start; }
.page-title { font-size:1.45rem; font-weight:700; color:var(--heading); margin:0 0 4px; }
.page-subtitle { font-size:0.875rem; color:var(--textcolor); margin:0 0 24px; }
.card-dark { background:var(--bg2); border:1px solid var(--border); border-radius:12px; padding:22px; margin-bottom:18px; }

/* Sidebar Utilities */
.sidebar { display:flex; flex-direction:column; gap:14px; }
.sidebar-card { background:var(--bg2); border:1px solid var(--border); border-radius:12px; padding:16px 18px; }
.sidebar-title { font-size:0.78rem; font-weight:700; color:#9ca3af; text-transform:uppercase; letter-spacing:.07em; margin-bottom:12px; }

.related-item { display:flex; align-items:center; gap:12px; padding:9px 0; text-decoration:none; border-bottom:1px solid var(--bg3); }
.related-item:last-child { border-bottom:none; padding-bottom:0; }
.related-item:hover { opacity:.8; }
.related-icon { width:32px; height:32px; border-radius:8px; display:flex; align-items:center; justify-content:center; font-size:15px; flex-shrink:0; }
.related-name { font-size:0.82rem; font-weight:600; color:var(--input-color); }
.related-desc { font-size:0.74rem; color:var(--textcolor); margin-top:1px; }

.tip-row { display:flex; gap:8px; margin-bottom:9px; align-items:flex-start; }
.tip-dot { width:6px; height:6px; border-radius:50%; background:#00AAFE; flex-shrink:0; margin-top:5px; }
.tip-text { font-size:0.8rem; color:var(--textcolor); line-height:1.55; }
.tip-text strong { color:#9ca3af; }

/* Tabbed Configuration Interface */
.mode-toggle { display:flex; gap:0; background:var(--bg); border:1px solid var(--border); border-radius:8px; overflow:hidden; margin-bottom:18px; }
.mode-tab { flex:1; padding:9px 0; font-size:0.85rem; font-weight:600; color:var(--textcolor); background:none; border:none; cursor:pointer; transition:all .14s; font-family:'Inter',sans-serif; }
.mode-tab.active { background:linear-gradient(90deg, #00AAFE, #005CFB); color:#fff; }

/* Interactive Form Engine */
.form-grid { display:grid; grid-template-columns:1fr 1fr; gap:14px; margin-bottom:16px; }
.form-group { display:flex; flex-direction:column; gap:6px; }
.form-label { font-size:0.78rem; font-weight:600; color:#9ca3af; }

.input-wrap { display:flex; align-items:center; background:var(--input-bg); border:1px solid var(--input-border); border-radius:8px; overflow:hidden; transition:border-color .15s, box-shadow .15s; }
.input-wrap:focus-within { border-color:#00AAFE; box-shadow:0 0 0 3px rgba(0,170,254,.15); }
.input-prefix, .input-suffix { padding:9px 10px; font-size:0.85rem; color:var(--textcolor); background:var(--bg2); white-space:nowrap; flex-shrink:0; }
.input-wrap input, .input-wrap select { flex:1; padding:9px 10px; font-size:0.9rem; font-family:'Inter',sans-serif; color:var(--input-color); background:transparent; border:none; outline:none; min-width:0; }
.input-wrap select option { background:var(--bg2); }
.input-wrap input::placeholder { color:#4b5563; }

.calc-btn { width:100%; padding:12px; background:linear-gradient(90deg, #00AAFE, #005CFB); color:#fff; font-size:0.95rem; font-weight:700; border:none; border-radius:9px; cursor:pointer; transition:opacity .14s; font-family:'Inter',sans-serif; }
.calc-btn:hover { opacity:.88; }
.section-label { font-size:0.72rem; font-weight:700; color:var(--textcolor); text-transform:uppercase; letter-spacing:.07em; margin:16px 0 10px; }
hr.divider { border:none; border-top:1px solid var(--border); margin:18px 0; }

/* Tabular Results Layout */
.results-section { display:none; margin-top:18px; }
.results-section.show { display:block; }
.rate-table { width:100%; border-collapse:collapse; }
.rate-table tr { border-bottom:1px solid var(--bg3); }
.rate-table tr:last-child { border-bottom:none; }
.rate-table td { padding:11px 14px; font-size:0.9rem; }
.rate-table td:first-child { color:#9ca3af; }
.rate-table td:last-child { text-align:right; font-weight:700; font-size:1rem; color:var(--input-color); }

/* Highlight Matrix inside Table */
.rate-table .highlight-row td { background:rgba(0,170,254,.07); }
.rate-table .highlight-row td:first-child { color:#00AAFE; font-weight:600; }
.rate-table .highlight-row td:last-child { color:#00AAFE; font-size:1.15rem; }

/* Educational Content Blocks */
.blog-section { max-width:1200px; margin:0 auto; padding:0 16px 72px; }
.blog-section-header { display:flex; align-items:center; gap:12px; margin-bottom:28px; }
.blog-section-badge { font-size:0.68rem; font-weight:700; color:#00AAFE; text-transform:uppercase; letter-spacing:.1em; background:rgba(0,170,254,.1); border:1px solid rgba(0,170,254,.22); border-radius:20px; padding:4px 12px; }
.blog-section-title { font-size:1.2rem; font-weight:700; color:var(--heading); margin:0; }
.blog-intro { background:var(--bg2); border:1px solid var(--border); border-radius:12px; padding:22px 24px; margin-bottom:24px; font-size:0.9rem; color:#9ca3af; line-height:1.75; }
.blog-intro strong { color:var(--input-color); } 
.blog-intro p { margin:0 0 12px; } 
.blog-intro p:last-child { margin-bottom:0; }

.blog-grid { display:grid; grid-template-columns:1fr 1fr; gap:16px; margin-bottom:24px; }
.blog-card { background:var(--bg2); border:1px solid var(--border); border-radius:12px; padding:20px 22px; }
.blog-card-icon { width:36px; height:36px; border-radius:9px; background:rgba(0,170,254,.13); border:1px solid rgba(0,170,254,.2); display:flex; align-items:center; justify-content:center; font-size:17px; margin-bottom:13px; color:#00AAFE; }
.blog-card h3 { font-size:0.92rem; font-weight:700; color:var(--heading); margin:0 0 8px; }
.blog-card p { font-size:0.82rem; color:var(--textcolor); line-height:1.7; margin:0; }

/* Accordion Engine Component */
.faq-item { background:var(--bg2); border:1px solid var(--border); border-radius:10px; margin-bottom:8px; cursor:pointer; overflow:hidden; }
.faq-item:hover { border-color:var(--card-hover-border); }
.faq-q { display:flex; align-items:center; justify-content:space-between; padding:15px 18px; gap:12px; }
.faq-q-text { font-size:0.88rem; font-weight:600; color:var(--input-color); }
.faq-chevron { width:18px; height:18px; color:#00AAFE; flex-shrink:0; transition:transform .2s; }
.faq-item.open .faq-chevron { transform:rotate(180deg); }
.faq-a { max-height:0; overflow:hidden; transition:max-height .3s ease; }
.faq-a-inner { padding:0 18px 15px; font-size:0.84rem; color:var(--textcolor); line-height:1.75; border-top:1px solid var(--border); padding-top:13px; }
.faq-item.open .faq-a { max-height:400px; }
.faq-a-inner strong { color:#9ca3af; }

/* Social Sharing Utilities */
.share-bar { max-width:1200px; margin:0 auto; padding:0 16px 48px; }
.share-inner { background:var(--bg2); border:1px solid var(--border); border-radius:12px; padding:20px 24px; display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap; }
.share-heading { font-size:0.88rem; font-weight:700; color:var(--input-color); } 
.share-sub { font-size:0.76rem; color:var(--textcolor); }
.share-btns { display:flex; gap:8px; flex-wrap:wrap; }
.share-btn { display:inline-flex; align-items:center; gap:7px; padding:9px 16px; border-radius:8px; font-size:0.82rem; font-weight:700; text-decoration:none; border:none; cursor:pointer; transition:opacity .15s, transform .12s; white-space:nowrap; }
.share-btn:hover { opacity:.88; transform:translateY(-1px); }
.share-btn-tw { background:#000; color:#fff; } 
.share-btn-fb { background:#1877f2; color:#fff; } 
.share-btn-wa { background:#25d366; color:#fff; }
.share-btn svg { width:15px; height:15px; fill:currentColor; flex-shrink:0; }

/* Application Footer Elements */
.site-footer { text-align:center; padding:24px 16px; font-size:0.8rem; color:#4b5563; border-top:1px solid var(--border); background:var(--bg); }
.footer-links { display:flex; justify-content:center; gap:20px; margin-top:8px; flex-wrap:wrap; }
.footer-links a { color:#4b5563; text-decoration:none; font-size:0.78rem; } 
.footer-links a:hover { color:#9ca3af; }

/* Micro Fluid Responsive Architecture */
@media (max-width:900px) { 
    .page-wrap { grid-template-columns:1fr; } 
    .sidebar { display:grid; grid-template-columns:1fr 1fr; gap:14px; } 
    .blog-grid { grid-template-columns:1fr; } 
}

@media (max-width:700px) { 
    .nav-links { display:none; } 
    .hamburger { display:flex; } 
    .page-wrap { padding:20px 14px 40px; } 
    .form-grid { grid-template-columns:1fr; } 
}

@media (max-width:580px) { 
    .sidebar { grid-template-columns:1fr; } 
}