:root {
    --primary-color: #e46917;
    --primary-hover: #c95a0f;
    --text-dark: #212529;
    --text-muted: #6c757d;
    --bg-light: #f8f9fa;
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Roboto', sans-serif;
    --font-accent: 'Oswald', sans-serif;
    --card-radius: 0.75rem;
    --transition-speed: 0.2s;
}

body {
    font-family: var(--font-body);
    color: var(--text-dark);
    background-color: var(--bg-light);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    line-height: 1.6;
}

main {
    flex: 1;
}

h1, h2, h3, h4, h5, h6, .font-heading {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--text-dark);
}

a {
    text-decoration: none;
    color: var(--text-dark);
    transition: color var(--transition-speed);
}

a:hover {
    color: var(--primary-color);
}

.btn-orange {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
    font-weight: 500;
}

.btn-orange:hover, .btn-orange:active, .btn-orange:focus {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    color: #fff;
}

.btn-outline-orange {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-outline-orange:hover {
    background-color: var(--primary-color);
    color: #fff;
}

.badge-orange {
    background-color: var(--primary-color);
    color: white;
}

.card {
    border: none;
    border-radius: var(--card-radius);
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    overflow: hidden;
}

.card-hover:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.card-img-top {
    height: 220px;
    object-fit: cover;
    width: 100%;
}

.top-bar {
    background-color: var(--primary-color);
    padding: 0.75rem 0;
}

.top-nav .nav-link {
    color: rgba(255,255,255,0.9) !important;
    font-weight: 500;
    text-transform: uppercase;
    font-size: 0.85rem;
    padding: 0.5rem 1rem;
    letter-spacing: 0.5px;
    border-radius: 4px;
    transition: all var(--transition-speed);
}

.top-nav .nav-link:hover, .top-nav .nav-link.active {
    background-color: rgba(255,255,255,0.2);
    color: #fff !important;
}

.main-header {
    background-color: #fff;
    padding: 0;
    border-bottom: 3px solid var(--primary-color);
    box-shadow: 0 4px 6px -6px rgba(0,0,0,0.1);
}

.publication-title {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1;
    color: var(--text-dark);
    letter-spacing: -1px;
}

.publication-subtitle {
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-muted);
    max-width: 300px;
}

.main-header-logo {
    height: 80px;
    width: auto;
}

.separator {
    border-left: 4px solid var(--primary-color);
    height: 60px;
    margin: 0 1.5rem;
}

.footer-section {
    background-color: #1a1a1a;
    color: #adb5bd;
    padding-top: 4rem;
    padding-bottom: 2rem;
    margin-top: auto;
}

.footer-title {
    color: #fff;
    margin-bottom: 1.5rem;
}

.footer-heading {
    color: #fff;
    font-size: 0.85rem;
    letter-spacing: 1px;
    margin-bottom: 1.2rem;
}

.social-icon {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    color: #fff;
    margin-right: 0.5rem;
    transition: background var(--transition-speed);
}

.social-icon:hover {
    background: var(--primary-color);
    color: #fff;
}

.text-justify {
    text-align: justify;
}

.section-header {
    padding-bottom: 1rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid #dee2e6;
}

body.login-page-bg {
    background-color: #f0f2f5;
}

.login-form-container {
    background: #fff;
    padding: 3rem;
    border-radius: 1rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    max-width: 400px;
    width: 100%;
    border: none;
    color: var(--text-dark);
}

.login-logo {
    background: var(--primary-color);
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.login-logo img {
    filter: brightness(0) invert(1);
    height: 45px;
}

.form-control-minimal {
    background-color: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 0.5rem;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    color: var(--text-dark);
}

.form-control-minimal:focus {
    background-color: #fff;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(228, 105, 23, 0.25);
    color: var(--text-dark);
}

@media (max-width: 991.98px) {
    .publication-title { font-size: 2.5rem; }
    .main-header { text-align: center; }
    .main-header .d-flex { flex-direction: column; }
    .separator { display: none; }
    .main-header-logo.d-lg-block { display: none !important; }
    .main-header-logo.d-lg-none { display: block !important; margin-bottom: 1rem; }
    .top-nav .nav-link { border-bottom: 1px solid rgba(255,255,255,0.1); border-radius: 0; }
}