/* File: assets/style.css */
:root {
    --bg-color: #f8f9fa;
    --text-color: #212529;
    --header-bg: #ffffff;
    --border-color: #dee2e6;
    --accent-color: #007bff;
    --accent-hover-color: #0056b3;
    --danger-color: #dc3545;
    --danger-hover-color: #c82333;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --input-bg: #fff;
    --input-border: #ced4da;
    --tag-example-bg: #e9ecef;
    --tag-example-text: #495057;
    --tag-research-bg: #b2ebf2;
    --tag-research-text: #006064;
    --tag-whitepaper-bg: #ffe0b2;
    --tag-whitepaper-text: #e65100;
    --tag-positionpaper-bg: #b3e5fc;
    --tag-positionpaper-text: #01579b;
    --tag-review-bg: #d1c4e9;
    --tag-review-text: #4a148c;
    --tag-blueprint-bg: #c5cae9;
    --tag-blueprint-text: #1a237e;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 20px;
    line-height: 1.6;
}

.container { max-width: 1000px; margin: 0 auto; background-color: var(--header-bg); padding: 30px; border-radius: 8px; box-shadow: 0 4px 12px var(--shadow-color); }
.header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 2rem; }
.header-left { display: flex; align-items: center; gap: 20px; }
.lang-switcher a { color: var(--text-color); text-decoration: none; padding: 5px 10px; border-radius: 5px; transition: background-color 0.2s; }
.lang-switcher a:hover, .lang-switcher a.active { background-color: var(--accent-color); color: white; }
h1, h2 { color: var(--text-color); }
h1 { text-align: center; margin-bottom: 1rem; font-size: 2em; }
h2 { border-bottom: 2px solid var(--accent-color); padding-bottom: 10px; margin-top: 2rem; }
.description { text-align: center; color: #6c757d; margin-bottom: 2.5rem; }

table { width: 100%; border-collapse: collapse; margin-top: 1.5rem; }
th, td { text-align: left; padding: 12px 15px; border-bottom: 1px solid var(--border-color); }
th { background-color: var(--bg-color); font-weight: 600; }
tbody tr:hover { background-color: #f1f3f5; }
td a { color: var(--accent-color); text-decoration: none; }
td a:hover { text-decoration: underline; }

.tag { padding: 4px 8px; border-radius: 12px; font-size: 0.8em; font-weight: 600; margin-left: 10px; }
.tag-example { background-color: var(--tag-example-bg); color: var(--tag-example-text); }
.tag-research { background-color: var(--tag-research-bg); color: var(--tag-research-text); }
.tag-whitepaper { background-color: var(--tag-whitepaper-bg); color: var(--tag-whitepaper-text); }
.tag-position_paper { background-color: var(--tag-positionpaper-bg); color: var(--tag-positionpaper-text); }
.tag-review { background-color: var(--tag-review-bg); color: var(--tag-review-text); }
.tag-blueprint { background-color: var(--tag-blueprint-bg); color: var(--tag-blueprint-text); }

.admin-section { margin-top: 2rem; padding: 20px; background: var(--bg-color); border-radius: 8px; }
.input-group { margin-bottom: 1rem; }
.input-group label { display: block; margin-bottom: 5px; font-weight: 600; }
.input-group input, .input-group select, .input-group textarea { width: 100%; padding: 10px; border-radius: 4px; border: 1px solid var(--input-border); background-color: var(--input-bg); color: var(--text-color); box-sizing: border-box; font-family: 'Poppins', sans-serif; }

.form-btn, .action-btn { cursor: pointer; border: none; padding: 10px 15px; border-radius: 5px; font-weight: 600; transition: background-color 0.2s; }
.form-btn { background-color: var(--accent-color); color: white; width: 100%; }
.form-btn:hover { background-color: var(--accent-hover-color); }
.action-btn { color: white; background-color: var(--accent-color); margin-right: 5px; display: inline-block; text-decoration: none; }
.action-btn:hover { background-color: var(--accent-hover-color); }
.edit-btn { background-color: #ffc107; }
.edit-btn:hover { background-color: #e0a800; }
.delete-btn { background-color: var(--danger-color); }
.delete-btn:hover { background-color: var(--danger-hover-color); }
#loginBtn, .admin-controls a, .admin-controls button { background: var(--accent-color); color: white; padding: 8px 15px; border-radius: 5px; text-decoration: none; border: none; font-family: 'Poppins', sans-serif; font-size: 1em; cursor: pointer; }
#loginBtn:hover, .admin-controls a:hover, .admin-controls button:hover { background-color: var(--accent-hover-color); }

.modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.6); display: none; justify-content: center; align-items: center; z-index: 1000; }
.modal-content { background: var(--header-bg); padding: 30px; border-radius: 8px; width: 90%; max-width: 500px; box-shadow: 0 5px 15px rgba(0,0,0,0.3); position: relative; }
.modal-close { position: absolute; top: 10px; right: 15px; font-size: 24px; background: none; border: none; cursor: pointer; color: var(--text-color); }
.login-error { color: var(--danger-color); font-weight: 600; text-align: center; margin-bottom: 1rem; }
.shake { animation: shake 0.5s; }
@keyframes shake { 10%, 90% { transform: translate3d(-1px, 0, 0); } 20%, 80% { transform: translate3d(2px, 0, 0); } 30%, 50%, 70% { transform: translate3d(-4px, 0, 0); } 40%, 60% { transform: translate3d(4px, 0, 0); } }

.metadata-box { background-color: #fff; padding: 2rem; border-radius: 8px; box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1); margin-top: 2rem; }
.metadata-box h1 { text-align: left; margin-bottom: 1.5rem; padding-bottom: 1rem; }
.metadata-item { margin-bottom: 1rem; }
.metadata-item strong { display: block; color: #555; margin-bottom: 0.25rem; }
.doi-link { display: inline-block; padding: 10px 20px; color: white; text-decoration: none; border-radius: 5px; font-weight: 600; background-color: var(--accent-color); }
.doi-link:hover { background-color: var(--accent-hover-color); }
.back-link { display: block; margin-top: 2rem; text-align: center; }

.action-buttons { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 1.5rem; }
.pdf-link { background-color: #f0ad4e; }
.pdf-link:hover { background-color: #ec971f; }

.tag-category { display: inline-block; background-color: #6c757d; color: white; padding: 5px 12px; border-radius: 15px; font-size: 0.9em; font-weight: 600; margin-bottom: 1rem; }
.citation-box { margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--border-color); }
.citation-box h2 { border-bottom: none; margin-top: 0; }
.citation-container { background-color: var(--bg-color); border-left: 4px solid var(--accent-color); padding: 15px; margin-top: 1rem; border-radius: 4px; position: relative; }
.citation-container p { margin: 0; }
.copy-btn { background-color: #6c757d; color: white; border: none; padding: 8px 12px; border-radius: 4px; cursor: pointer; font-weight: 600; margin-top: 10px; transition: background-color 0.2s; }
.copy-btn:hover { background-color: #5a6268; }
.copy-confirm-msg { display: none; margin-left: 10px; color: green; font-weight: bold; }

.dashboard-section { margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--border-color); }
.dashboard-card { background-color: var(--bg-color); border: 1px solid var(--border-color); border-radius: 8px; padding: 20px; margin-bottom: 1rem; }
.dashboard-card h3 { margin-top: 0; border-bottom: 1px solid var(--border-color); padding-bottom: 10px; }
.dashboard-card ol { padding-left: 20px; }
.message-box { padding: 15px; background-color: #d4edda; border: 1px solid #c3e6cb; color: #155724; border-radius: 5px; margin-bottom: 1rem; }