/* =========================================================
   GAVEL - The International Journal of AI in Aviation Law
   Custom Journal Style Sheet for Open Journal Systems (OJS)
   Theme: Purdue University colors
   Founded: 2026
   ========================================================= */

/* --------- Purdue color palette (CSS variables) --------- */
:root {
    --purdue-gold:        #CEB888;  /* Boilermaker Gold */
    --purdue-gold-dark:   #8E6F3E;  /* Aged gold accent */
    --purdue-black:       #000000;  /* Black */
    --purdue-rush:        #9D9795;  /* Rush (warm gray) */
    --purdue-steel:       #555960;  /* Steel (cool gray) */
    --gavel-bg:           #FFFFFF;  /* Page background */
    --gavel-text:         #1A1A1A;  /* Body text */
    --gavel-link:         #8E6F3E;  /* Links */
    --gavel-link-hover:   #000000;  /* Link hover */
}

/* --------- Base typography --------- */
body,
.pkp_structure_page {
    background-color: var(--gavel-bg);
    color: var(--gavel-text);
    font-family: "Source Sans Pro", "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6,
.pkp_site_name,
.pkp_structure_head .pkp_site_name a {
    font-family: "Source Serif Pro", Georgia, "Times New Roman", serif;
    color: var(--purdue-black);
    font-weight: 700;
}

/* --------- Top bar / header --------- */
.pkp_structure_head {
    background-color: var(--purdue-black);
    border-bottom: 6px solid var(--purdue-gold);
}

.pkp_site_name {
    background-color: var(--purdue-gold);
    padding: 1.25rem 1.5rem;
}

.pkp_site_name a,
.pkp_site_name .is_text {
    color: var(--purdue-black) !important;
    text-decoration: none;
    font-size: 1.9rem;
    letter-spacing: 0.5px;
}

.pkp_site_name a:hover {
    color: var(--purdue-gold-dark) !important;
    text-decoration: none;
}

/* --------- Primary navigation --------- */
.pkp_navigation_primary_row,
.pkp_navigation_primary {
    background-color: var(--purdue-black);
}

.pkp_navigation_primary > li > a {
    color: var(--purdue-gold) !important;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0.9rem 1.1rem;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.pkp_navigation_primary > li > a:hover,
.pkp_navigation_primary > li > a:focus,
.pkp_navigation_primary > li.active > a {
    background-color: var(--purdue-gold);
    color: var(--purdue-black) !important;
}

/* --------- User/search navigation --------- */
.pkp_navigation_user {
    background-color: var(--purdue-black);
}

.pkp_navigation_user a {
    color: var(--purdue-gold) !important;
}

.pkp_navigation_user a:hover {
    color: #FFFFFF !important;
}

/* --------- Links --------- */
a {
    color: var(--gavel-link);
    text-decoration: underline;
    text-underline-offset: 2px;
}

a:hover,
a:focus {
    color: var(--gavel-link-hover);
}

/* --------- Buttons --------- */
.pkp_button,
button.pkp_button,
input[type="submit"].pkp_button,
.cmp_button {
    background-color: var(--purdue-black);
    color: var(--purdue-gold) !important;
    border: 2px solid var(--purdue-black);
    border-radius: 2px;
    font-weight: 600;
    padding: 0.6rem 1.2rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.2s ease;
}

.pkp_button:hover,
button.pkp_button:hover,
input[type="submit"].pkp_button:hover,
.cmp_button:hover {
    background-color: var(--purdue-gold);
    color: var(--purdue-black) !important;
    border-color: var(--purdue-gold);
}

/* --------- Announcements, callouts, blockquotes --------- */
.announcement,
blockquote {
    border-left: 5px solid var(--purdue-gold);
    background-color: #FAF7F0;
    padding: 1rem 1.25rem;
    margin: 1.25rem 0;
    color: var(--purdue-black);
}

/* --------- Article listings / issue pages --------- */
.obj_article_summary .title,
.obj_issue_summary .title {
    color: var(--purdue-black);
    font-weight: 700;
}

.obj_article_summary .title a:hover,
.obj_issue_summary .title a:hover {
    color: var(--purdue-gold-dark);
}

.obj_article_summary .authors,
.obj_issue_summary .description {
    color: var(--purdue-steel);
}

/* Section dividers in issue TOC */
.sections .section_title,
.section h2 {
    border-bottom: 3px solid var(--purdue-gold);
    padding-bottom: 0.4rem;
    color: var(--purdue-black);
}

/* --------- Sidebar blocks --------- */
.pkp_structure_sidebar .pkp_block .title,
.pkp_block .title {
    background-color: var(--purdue-black);
    color: var(--purdue-gold);
    padding: 0.6rem 0.9rem;
    border-radius: 2px 2px 0 0;
    margin: 0;
}

.pkp_structure_sidebar .pkp_block .content,
.pkp_block .content {
    border: 1px solid var(--purdue-gold);
    border-top: none;
    padding: 0.9rem;
    background-color: #FFFFFF;
    border-radius: 0 0 2px 2px;
}

/* --------- Tables --------- */
table,
.pkp_listings table {
    border-collapse: collapse;
    width: 100%;
}

table th {
    background-color: var(--purdue-black);
    color: var(--purdue-gold);
    padding: 0.6rem 0.8rem;
    text-align: left;
}

table td {
    padding: 0.5rem 0.8rem;
    border-bottom: 1px solid #EAE4D4;
}

table tr:hover td {
    background-color: #FAF7F0;
}

/* --------- Forms --------- */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="search"],
select,
textarea {
    border: 1px solid var(--purdue-rush);
    border-radius: 2px;
    padding: 0.45rem 0.6rem;
    font-family: inherit;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="search"]:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--purdue-gold-dark);
    box-shadow: 0 0 0 3px rgba(206, 184, 136, 0.35);
}

/* --------- Footer --------- */
.pkp_structure_footer_wrapper,
.pkp_structure_footer {
    background-color: var(--purdue-black);
    color: #E8E6E1;
    border-top: 6px solid var(--purdue-gold);
    padding: 1.5rem;
}

.pkp_structure_footer a,
.pkp_brand_footer a {
    color: var(--purdue-gold);
}

.pkp_structure_footer a:hover,
.pkp_brand_footer a:hover {
    color: #FFFFFF;
}

/* --------- Breadcrumbs --------- */
.pkp_structure_content .cmp_breadcrumbs,
.cmp_breadcrumbs a {
    color: var(--purdue-steel);
}

.cmp_breadcrumbs a:hover {
    color: var(--purdue-gold-dark);
}

/* --------- Page title bar --------- */
.page_title,
.pkp_page_title {
    color: var(--purdue-black);
    border-bottom: 3px solid var(--purdue-gold);
    padding-bottom: 0.5rem;
    margin-bottom: 1.25rem;
}

/* --------- Highlighted text / badges --------- */
.label,
.badge,
.status_label {
    background-color: var(--purdue-gold);
    color: var(--purdue-black);
    padding: 0.2rem 0.55rem;
    border-radius: 2px;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

/* --------- Accessibility: focus outlines --------- */
a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 2px solid var(--purdue-gold-dark);
    outline-offset: 2px;
}

/* --------- Responsive tweaks --------- */
@media (max-width: 768px) {
    .pkp_site_name a,
    .pkp_site_name .is_text {
        font-size: 1.4rem;
    }

    .pkp_navigation_primary > li > a {
        padding: 0.7rem 0.8rem;
    }
}