/* ===================================================================
   Team Science - styles.css
   Modern, mobile-responsive stylesheet replacing Adobe Spry
   =================================================================== */

/* ===== RESET & BASE ===== */
*, *::before, *::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    color: #000033;
    font-family: Verdana, Arial, Helvetica, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    background-color: #f0f0f0;
}

ul, ol, dl {
    padding: 0;
    margin: 0;
}

a img {
    border: none;
}

a:link {
    color: #0033CC;
    text-decoration: underline;
}

a:visited {
    color: #6600CC;
    text-decoration: underline;
}

a:hover, a:active, a:focus {
    text-decoration: none;
    color: #CC0000;
}

img {
    max-width: 100%;
    height: auto;
}

/* ===== LAYOUT CONTAINER ===== */
.container {
    max-width: 100%;
    width: 100%;
    background: #fff;
    margin: 0 auto;
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.08);
}

/* ===== HEADER ===== */
.header {
    background-color: #232846;
    margin: 0;
    padding: 0;
    display: block;
}

.header img {
    display: block;
    width: 100%;
    height: auto;
}

/* ===== NAVIGATION ===== */
.main-nav {
    background-color: #66CCFF;
    position: relative;
    z-index: 100;
}

/* Hamburger toggle button (hidden on desktop) */
.nav-toggle {
    display: none;
    background-color: #3399CC;
    color: #fff;
    border: none;
    padding: 10px 16px;
    font-size: 1rem;
    cursor: pointer;
    width: 100%;
    text-align: left;
    font-family: Verdana, Arial, Helvetica, sans-serif;
}

.nav-toggle:hover {
    background-color: #2277AA;
}

/* Top-level nav list */
.main-nav > ul {
    list-style: none;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    flex-wrap: wrap;
    max-width: 1140px;
}

/* All nav list items */
.main-nav li {
    position: relative;
    margin: 0;
}

/* All nav links */
.main-nav a {
    display: block;
    padding: 10px 9px;
    color: #003366;
    text-decoration: none;
    font-size: 0.82rem;
    font-weight: bold;
    white-space: nowrap;
    border: none;
}

.main-nav a:visited {
    color: #003366;
    text-decoration: none;
}

.main-nav a:hover,
.main-nav a:focus {
    background-color: #3399CC;
    color: #fff;
    text-decoration: none;
}

/* Dropdown submenu — hidden by default */
.main-nav .submenu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #66CCFF;
    min-width: 170px;
    z-index: 200;
    box-shadow: 2px 3px 6px rgba(0, 0, 0, 0.2);
    list-style: none;
    flex-direction: column;
    margin: 0;
    padding: 0;
}

/* Show submenu on hover or keyboard focus */
.main-nav li:hover > .submenu,
.main-nav li:focus-within > .submenu {
    display: flex;
}

.main-nav .submenu li {
    width: 100%;
}

.main-nav .submenu a {
    font-weight: normal;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    white-space: normal;
}

/* Coming soon / placeholder nav items */
a.coming-soon {
    opacity: 0.65;
    font-style: italic;
    cursor: default;
}

a.coming-soon::after {
    content: " *";
    font-size: 0.75em;
    vertical-align: super;
}

/* ===== CONTENT AREA ===== */
.content {
    max-width: 1100px;
    margin: 0 auto;
    padding: 20px 30px 30px 30px;
    background-color: #fff;
    overflow: hidden;
}

.content h1 {
    color: #003366;
    border-bottom: 2px solid #66CCFF;
    padding-bottom: 8px;
    margin-top: 10px;
    margin-bottom: 20px;
    padding-left: 0;
    padding-right: 0;
    font-size: 1.6rem;
}

.content h2 {
    color: #003366;
    padding-left: 0;
    padding-right: 0;
    font-size: 1.25rem;
    margin-top: 20px;
}

.content h3 {
    color: #003366;
    padding-left: 0;
    padding-right: 0;
    font-size: 1.05rem;
}

.content p {
    padding-left: 0;
    padding-right: 0;
    margin-bottom: 14px;
}

.content ul,
.content ol {
    padding-left: 28px;
    margin-bottom: 14px;
}

.content ul li,
.content ol li {
    margin-bottom: 6px;
}

.content blockquote {
    margin: 16px 30px;
    padding: 12px 16px;
    border-left: 4px solid #66CCFF;
    background-color: #f7f7f7;
    color: #333;
    font-style: italic;
}

.content blockquote p {
    margin: 0;
}

.content img {
    display: block;
    margin: 20px auto;
    max-width: 100%;
    height: auto;
}

/* ===== REFERENCES SECTION ===== */
.references {
    margin-top: 36px;
    padding-top: 14px;
    border-top: 1px solid #ccc;
}

.references h2 {
    font-size: 1rem;
    color: #003366;
    margin-bottom: 10px;
    padding-left: 0;
}

.references p {
    font-size: 0.82rem;
    line-height: 1.55;
    margin-bottom: 8px;
    color: #222;
    padding-left: 0;
    padding-right: 0;
}

/* Coming-soon notice within page content */
.notice-coming-soon {
    background-color: #FFF8E1;
    border: 1px solid #FFD54F;
    border-radius: 4px;
    padding: 12px 16px;
    margin: 20px 0;
    font-style: italic;
    color: #555;
    font-size: 0.9rem;
}

/* ===== BACK TO TOP BUTTON ===== */
.back-to-top {
    position: fixed;
    bottom: 28px;
    right: 28px;
    background-color: #003366;
    color: #fff;
    border: none;
    border-radius: 50%;
    width: 44px;
    height: 44px;
    font-size: 1.2rem;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
    z-index: 999;
    transition: background-color 0.2s;
    text-decoration: none;
    line-height: 1;
}

.back-to-top:hover {
    background-color: #66CCFF;
    color: #003366;
}

.back-to-top.visible {
    display: flex;
}

/* ===== BUTTONS ===== */
.btn-primary {
    display: inline-block;
    background-color: #003366;
    color: #ffffff;
    padding: 10px 22px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: bold;
    font-size: 0.95em;
    transition: background-color 0.2s ease;
}
.btn-primary:hover {
    background-color: #FF9900;
    color: #003366;
}

/* ===== FOOTER ===== */
.footer {
    background-color: #FF9900;
    color: #003366;
    text-align: center;
    padding: 14px 20px;
    clear: both;
}

.footer p {
    margin: 0;
    padding: 0;
    font-size: 0.82rem;
}

.footer a {
    color: #003366;
    font-weight: bold;
}

.footer a:hover {
    color: #fff;
    text-decoration: none;
}

/* Footnote below nav about coming-soon items */
.nav-note {
    background-color: #f0f8ff;
    font-size: 0.78rem;
    color: #555;
    padding: 4px 16px;
    border-bottom: 1px solid #ddd;
    font-style: italic;
}

/* ===== RESPONSIVE — TABLET & MOBILE ===== */
@media (max-width: 780px) {
    /* Show hamburger, hide menu by default */
    .nav-toggle {
        display: block;
    }

    .main-nav > ul {
        display: none;
        flex-direction: column;
    }

    .main-nav > ul.nav-open {
        display: flex;
    }

    /* Submenus become inline blocks on mobile */
    .main-nav .submenu {
        position: static;
        box-shadow: none;
        border-left: 4px solid #3399CC;
        background-color: #A8DFFF;
    }

    /* Disable CSS hover-based dropdown on mobile */
    .main-nav li:hover > .submenu {
        display: none;
    }

    /* JS-toggled open class shows submenu on mobile */
    .main-nav li.submenu-open > .submenu {
        display: flex;
    }

    .content {
        padding: 15px 18px 24px 18px;
    }

    .content h1 {
        font-size: 1.3rem;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 14px;
    }

    .content {
        padding: 12px 14px 20px 14px;
    }
}