/* BQS Power — site.css */
/* Navy/blue theme, clean modern layout, responsive */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --navy: #1a2744;
    --navy-light: #243556;
    --blue: #2c5f9e;
    --blue-light: #3a7fd5;
    --blue-pale: #e8f0fa;
    --white: #ffffff;
    --grey-light: #f5f6f8;
    --grey: #6b7280;
    --grey-dark: #374151;
    --text: #1f2937;
    --border: #d1d5db;
    --max-width: 960px;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--text);
    line-height: 1.6;
    background: var(--white);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ---- Banner ---- */
.banner {
    background: var(--navy) url('/images/background.jpg') center/cover no-repeat;
    position: relative;
    text-align: center;
    padding: 2rem 1rem;
}
.banner::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(26,39,68,.65);
}
.banner img {
    position: relative;
    z-index: 1;
    max-width: 320px;
    width: 80%;
    height: auto;
}

/* ---- Navigation ---- */
.nav-wrap {
    background: var(--navy);
    position: sticky;
    top: 0;
    z-index: 100;
}
.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
}

/* hamburger toggle (hidden checkbox) */
#nav-toggle { display: none; }
.nav-toggle-label {
    display: none;
    cursor: pointer;
    padding: .75rem 1rem;
    color: var(--white);
    font-size: 1.5rem;
    width: 100%;
    text-align: right;
}

.nav-links {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}
.nav-links li a {
    display: block;
    padding: .75rem 1rem;
    color: rgba(255,255,255,.85);
    text-decoration: none;
    font-size: .9rem;
    transition: background .2s, color .2s;
}
.nav-links li a:hover,
.nav-links li a.active {
    background: var(--blue);
    color: var(--white);
}

/* mobile nav */
@media (max-width: 767px) {
    .nav-toggle-label { display: block; }
    .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
    }
    #nav-toggle:checked ~ .nav-links { display: flex; }
    .nav-links li a {
        padding: .85rem 1.25rem;
        border-top: 1px solid rgba(255,255,255,.1);
    }
}

/* ---- Main content ---- */
main {
    flex: 1;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2rem 1.25rem 3rem;
    width: 100%;
}

h1 {
    color: var(--navy);
    font-size: 1.75rem;
    margin-bottom: 1rem;
    border-bottom: 3px solid var(--blue);
    padding-bottom: .5rem;
}
h2 {
    color: var(--navy);
    font-size: 1.35rem;
    margin: 2rem 0 .75rem;
}
h3 {
    color: var(--navy-light);
    font-size: 1.15rem;
    margin: 1.5rem 0 .5rem;
}

p { margin-bottom: 1rem; }

a { color: var(--blue); }
a:hover { color: var(--blue-light); }

ul, ol {
    margin: 0 0 1rem 1.5rem;
}
li { margin-bottom: .35rem; }

/* ---- Info box / note ---- */
.note {
    background: var(--blue-pale);
    border-left: 4px solid var(--blue);
    padding: 1rem 1.25rem;
    margin: 1.5rem 0;
    border-radius: 0 4px 4px 0;
}

/* ---- Tables ---- */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0 1.5rem;
}
th, td {
    text-align: left;
    padding: .6rem .75rem;
    border: 1px solid var(--border);
}
th {
    background: var(--navy);
    color: var(--white);
    font-weight: 600;
}
tr:nth-child(even) { background: var(--grey-light); }

/* ---- Buttons / download links ---- */
.btn {
    display: inline-block;
    background: var(--blue);
    color: var(--white);
    padding: .6rem 1.25rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    transition: background .2s;
    margin: .5rem .5rem .5rem 0;
}
.btn:hover {
    background: var(--navy);
    color: var(--white);
}

/* ---- Contact table (borderless) ---- */
.contact-table {
    border: none;
}
.contact-table td {
    border: none;
    padding: .4rem .75rem;
    vertical-align: top;
}
.contact-table td:first-child {
    font-weight: 600;
    white-space: nowrap;
    color: var(--navy);
}

/* ---- Footer ---- */
footer {
    background: var(--navy);
    color: rgba(255,255,255,.7);
    text-align: center;
    padding: 1.5rem 1rem;
    font-size: .85rem;
}
footer a {
    color: rgba(255,255,255,.85);
}
footer a:hover {
    color: var(--white);
}
footer p {
    margin-bottom: .4rem;
}

/* ---- Utility ---- */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    border: 0;
}

/* ---- Print ---- */
@media print {
    .nav-wrap, .banner, footer { display: none; }
    main { max-width: 100%; padding: 0; }
}