/* ElectroCalc shared site styles: nav menu, tool grid, footer, page layout */

.eyebrow{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--accent);letter-spacing:.12em;text-transform:uppercase;margin-bottom:14px;display:block;}
h1{font-weight:800;font-size:clamp(28px,5vw,44px);line-height:1.08;letter-spacing:-0.02em;margin:0 0 14px;}
h1 em{color:var(--accent);font-style:normal;}
.sub{color:var(--ink-dim);font-size:16px;line-height:1.6;max-width:56ch;margin-bottom:44px;}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:28px;margin-bottom:24px;}
.panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;flex-wrap:wrap;gap:10px;}
.panel-title{font-family:'IBM Plex Mono',monospace;font-size:13px;color:var(--ink-dim);letter-spacing:.05em;text-transform:uppercase;margin-bottom:24px;}

.mode-toggle{display:flex;background:var(--bg);border-radius:8px;padding:3px;border:1px solid var(--line);margin-bottom:20px;width:fit-content;}
.mode-btn{font-family:'IBM Plex Mono',monospace;font-size:12px;padding:7px 14px;border-radius:6px;border:none;background:transparent;color:var(--ink-dim);cursor:pointer;}
.mode-btn.active{background:var(--accent);color:#0B0E14;font-weight:600;}

.form-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:8px;}
@media(max-width:640px){.form-grid{grid-template-columns:1fr 1fr;}}
@media(max-width:420px){.form-grid{grid-template-columns:1fr;}}
.field label{display:block;font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--ink-dim);text-transform:uppercase;letter-spacing:.05em;margin-bottom:8px;}
.field label .unit{color:var(--accent);}
input[type=number], input[type=text], select{width:100%;padding:11px 12px;background:var(--surface-hi);border:1px solid var(--line);border-radius:8px;color:var(--ink);font-family:'IBM Plex Mono',monospace;font-size:14px;}
select{appearance:none;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238B93A7' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;}
input[type=number]:focus, input[type=text]:focus, select:focus{outline:2px solid var(--accent);outline-offset:1px;}

.result{margin-top:24px;padding:24px;background:var(--bg);border:1px solid var(--line);border-radius:10px;}
.result-row{display:flex;justify-content:space-between;align-items:baseline;padding:10px 0;border-bottom:1px solid var(--line);}
.result-row:last-child{border-bottom:none;}
.result-label{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--ink-dim);text-transform:uppercase;letter-spacing:.04em;}
.result-val{font-family:'IBM Plex Mono',monospace;font-weight:700;font-size:20px;color:var(--trace);}
.result-value{font-family:'IBM Plex Mono',monospace;font-weight:700;font-size:clamp(28px,6vw,38px);color:var(--trace);}
.result-sub{font-family:'IBM Plex Mono',monospace;font-size:13px;color:var(--ink-dim);margin-top:6px;text-align:center;}
.hint{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--ink-dim);margin-top:16px;line-height:1.7;}
.hint b{color:var(--ink);}

/* Voltage divider circuit visual */
.div-stage{display:flex;justify-content:center;padding:24px 10px 50px;}
.div-visual{position:relative;width:220px;height:280px;}
.div-svg{width:100%;height:100%;max-width:280px;}
.div-readout{font-family:'IBM Plex Mono',monospace;font-weight:700;font-size:15px;fill:#4ADE80;}

.nav-menu-wrap{position:relative;}
.nav-menu-btn{font-family:'IBM Plex Mono',monospace;font-size:13px;color:var(--ink-dim);background:transparent;border:1px solid var(--line);border-radius:8px;padding:8px 14px;cursor:pointer;display:flex;align-items:center;gap:6px;}
.nav-menu-btn:hover{border-color:var(--accent);color:var(--accent);}
.nav-dropdown{display:none;position:absolute;top:calc(100% + 8px);right:0;background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:8px;min-width:240px;z-index:100;box-shadow:0 12px 30px rgba(0,0,0,.5);max-height:70vh;overflow-y:auto;}
.nav-dropdown.open{display:block;}
.nav-dropdown a{display:block;padding:8px 12px;border-radius:6px;color:var(--ink);text-decoration:none;font-size:13px;font-family:'Inter',sans-serif;}
.nav-dropdown a:hover{background:var(--surface-hi);color:var(--accent);}
.nav-dropdown .nav-divider{height:1px;background:var(--line);margin:6px 4px;}
.nav-dropdown .nav-current{color:var(--accent);font-weight:600;}
.nav-dropdown .nav-category{font-family:'IBM Plex Mono',monospace;font-size:10px;color:var(--ink-dim);text-transform:uppercase;letter-spacing:.06em;padding:10px 12px 4px;}

.more-tools{margin-top:40px;}
.more-tools h2{font-size:13px;font-family:'IBM Plex Mono',monospace;color:var(--ink-dim);text-transform:uppercase;letter-spacing:.05em;margin-bottom:16px;}
.tool-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;}
.tool-card{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:18px;text-decoration:none;color:var(--ink);transition:.15s;display:block;}
.tool-card:hover{border-color:var(--accent);transform:translateY(-2px);}
.tool-card .tname{font-weight:600;font-size:14px;}
.tool-card .ttag{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--ink-dim);margin-top:4px;}

.comments-section{margin-top:40px;}
.comments-section h2{font-size:13px;font-family:'IBM Plex Mono',monospace;color:var(--ink-dim);text-transform:uppercase;letter-spacing:.05em;margin-bottom:16px;}
.giscus-frame{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:12px;}

footer{margin-top:60px;padding-top:24px;border-top:1px solid var(--line);font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--ink-dim);display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;}
.footer-links{display:flex;gap:16px;flex-wrap:wrap;}
.footer-links a{color:var(--ink-dim);text-decoration:none;font-family:'IBM Plex Mono',monospace;font-size:12px;}
.footer-links a:hover{color:var(--accent);}

@media (prefers-reduced-motion:reduce){*{transition:none!important;}}


.info-section{max-width:900px;margin:28px auto;padding:22px 24px;line-height:1.7;border-radius:14px;background:rgba(127,127,127,.06)}
.info-section h2{margin-top:0}.info-section h3{margin-bottom:6px}.info-section p{margin:8px 0 14px}.info-section li{margin:6px 0}