/* =====================================================
   Radar IA BR — Design System
   Prefix: ria-
   ===================================================== */

:root {
    --ria-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --ria-bg: #0a0e1a;
    --ria-bg-card: #111827;
    --ria-bg-card-hover: #1a2235;
    --ria-bg-surface: #0f172a;
    --ria-bg-nav: rgba(10, 14, 26, 0.85);
    --ria-border: #1e293b;
    --ria-border-light: #243044;
    --ria-text: #e2e8f0;
    --ria-text-muted: #94a3b8;
    --ria-text-dim: #64748b;
    --ria-accent: #f97316;
    --ria-accent-hover: #ea580c;
    --ria-accent-light: rgba(249, 115, 22, 0.12);
    --ria-heat-hot: #ef4444;
    --ria-heat-warm: #f97316;
    --ria-heat-mild: #eab308;
    --ria-heat-cool: #22c55e;
    --ria-heat-cold: #6b7280;
    --ria-radius: 12px;
    --ria-radius-sm: 8px;
    --ria-radius-xs: 6px;
    --ria-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
    --ria-shadow-card: 0 2px 12px rgba(0, 0, 0, 0.2);
    --ria-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --ria-container: 1200px;
}

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

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
    font-family: var(--ria-font);
    background: var(--ria-bg);
    color: var(--ria-text);
    line-height: 1.6;
    min-height: 100vh;
}

a { color: var(--ria-accent); text-decoration: none; transition: color var(--ria-transition); }
a:hover { color: var(--ria-accent-hover); }

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

.ria-container {
    max-width: var(--ria-container);
    margin: 0 auto;
    padding: 0 24px;
}

/* ---- NAV ---- */
.ria-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--ria-bg-nav);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border-bottom: 1px solid var(--ria-border);
}

.ria-nav__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.ria-nav__brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--ria-text);
}
.ria-nav__brand:hover { color: var(--ria-accent); }

.ria-nav__icon { color: var(--ria-accent); display: flex; }

.ria-nav__title {
    font-size: 1.125rem;
    font-weight: 500;
    letter-spacing: -0.02em;
}
.ria-nav__title strong { font-weight: 800; color: var(--ria-accent); }

.ria-nav__links {
    display: flex;
    gap: 6px;
}

.ria-nav__link {
    color: var(--ria-text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    padding: 6px 14px;
    border-radius: var(--ria-radius-xs);
    transition: all var(--ria-transition);
}
.ria-nav__link:hover { color: var(--ria-text); background: var(--ria-accent-light); }
.ria-nav__link--active { color: var(--ria-accent); background: var(--ria-accent-light); }

.ria-nav__toggle {
    display: none;
    background: none;
    border: none;
    color: var(--ria-text);
    cursor: pointer;
    padding: 8px;
}

/* ---- MOBILE MENU ---- */
.ria-mobile-menu {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--ria-bg);
    z-index: 99;
    padding: 24px;
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}
.ria-mobile-menu.ria-mobile-menu--open {
    display: block;
    opacity: 1;
    transform: translateY(0);
}
.ria-mobile-menu__link {
    display: block;
    color: var(--ria-text);
    font-size: 1.125rem;
    font-weight: 500;
    padding: 14px 0;
    border-bottom: 1px solid var(--ria-border);
}

/* ---- HERO ---- */
.ria-hero {
    padding: 80px 0 60px;
    background: linear-gradient(135deg, var(--ria-bg) 0%, #0f1a2e 50%, #1a0f0a 100%);
    border-bottom: 1px solid var(--ria-border);
    position: relative;
    overflow: hidden;
}
.ria-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(249, 115, 22, 0.06) 0%, transparent 70%);
    pointer-events: none;
}

.ria-hero__content { max-width: 640px; }

.ria-hero__badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ria-accent);
    background: var(--ria-accent-light);
    padding: 5px 14px;
    border-radius: 100px;
    margin-bottom: 20px;
}

.ria-hero__title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    color: #fff;
    margin-bottom: 16px;
}

.ria-hero__subtitle {
    font-size: 1.125rem;
    color: var(--ria-text-muted);
    line-height: 1.7;
    max-width: 540px;
}

.ria-hero__stats {
    display: flex;
    gap: 48px;
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--ria-border);
}

.ria-stat { display: flex; flex-direction: column; }
.ria-stat__number {
    font-size: 2rem;
    font-weight: 800;
    color: #fff;
    letter-spacing: -0.02em;
}
.ria-stat__label {
    font-size: 0.8rem;
    color: var(--ria-text-dim);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-top: 2px;
}

/* ---- MAIN GRID ---- */
.ria-main { padding: 48px 0 80px; }

.ria-main__grid {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 40px;
    align-items: start;
}

/* ---- SECTION HEADER ---- */
.ria-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
    flex-wrap: wrap;
    gap: 16px;
}

.ria-section-header__title {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.ria-section-header__filter { display: flex; gap: 6px; }

.ria-filter-btn {
    background: transparent;
    border: 1px solid var(--ria-border);
    color: var(--ria-text-muted);
    font-family: var(--ria-font);
    font-size: 0.8rem;
    font-weight: 500;
    padding: 6px 14px;
    border-radius: 100px;
    cursor: pointer;
    transition: all var(--ria-transition);
}
.ria-filter-btn:hover { border-color: var(--ria-accent); color: var(--ria-accent); }
.ria-filter-btn--active {
    background: var(--ria-accent);
    border-color: var(--ria-accent);
    color: #fff;
}

/* ---- POST CARDS ---- */
.ria-posts__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
}
.ria-posts__grid--related { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }

.ria-card {
    background: var(--ria-bg-card);
    border: 1px solid var(--ria-border);
    border-radius: var(--ria-radius);
    padding: 24px;
    transition: all var(--ria-transition);
    display: flex;
    flex-direction: column;
}
.ria-card:hover {
    background: var(--ria-bg-card-hover);
    border-color: var(--ria-border-light);
    transform: translateY(-2px);
    box-shadow: var(--ria-shadow-card);
}

.ria-card__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
}

.ria-card__meta { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

.ria-card__category {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--ria-accent);
    background: var(--ria-accent-light);
    padding: 3px 10px;
    border-radius: 100px;
}

.ria-card__type {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    padding: 3px 10px;
    border-radius: 100px;
}
.ria-card__type--noticia { color: #60a5fa; background: rgba(96, 165, 250, 0.12); }
.ria-card__type--licitacao { color: #a78bfa; background: rgba(167, 139, 250, 0.12); }
.ria-card__type--analise { color: #34d399; background: rgba(52, 211, 153, 0.12); }

.ria-heat {
    display: flex;
    align-items: center;
    gap: 4px;
}
.ria-heat__value, .ria-heat span {
    font-size: 0.875rem;
    font-weight: 700;
}
.ria-heat--large { gap: 6px; }
.ria-heat--large span { font-size: 1rem; }
.ria-heat__label {
    font-size: 0.75rem !important;
    font-weight: 500 !important;
    color: var(--ria-text-muted) !important;
    margin-left: 4px;
}

.ria-card__title {
    font-size: 1.05rem;
    font-weight: 700;
    line-height: 1.4;
    letter-spacing: -0.01em;
    margin-bottom: 10px;
}
.ria-card__title a { color: var(--ria-text); }
.ria-card__title a:hover { color: var(--ria-accent); }

.ria-card__excerpt {
    font-size: 0.875rem;
    color: var(--ria-text-muted);
    line-height: 1.6;
    flex: 1;
    margin-bottom: 16px;
}

.ria-card__footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 14px;
    border-top: 1px solid var(--ria-border);
    font-size: 0.78rem;
    color: var(--ria-text-dim);
}

/* ---- SIDEBAR ---- */
.ria-sidebar { position: sticky; top: 88px; }

.ria-widget {
    background: var(--ria-bg-card);
    border: 1px solid var(--ria-border);
    border-radius: var(--ria-radius);
    padding: 24px;
    margin-bottom: 20px;
}

.ria-widget__title {
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--ria-text);
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--ria-border);
}
.ria-widget__title svg { color: var(--ria-accent); }

.ria-heat-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid var(--ria-border);
    color: var(--ria-text);
    transition: all var(--ria-transition);
}
.ria-heat-item:last-child { border-bottom: 0; }
.ria-heat-item:hover { padding-left: 6px; }

.ria-heat-item__rank {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--ria-text-dim);
    min-width: 24px;
}

.ria-heat-item__info { flex: 1; min-width: 0; }
.ria-heat-item__title {
    display: block;
    font-size: 0.84rem;
    font-weight: 600;
    line-height: 1.3;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.ria-heat-item__cat {
    font-size: 0.72rem;
    color: var(--ria-text-dim);
}

.ria-heat-item__score {
    font-size: 1.1rem;
    font-weight: 800;
    min-width: 36px;
    text-align: right;
}

.ria-cat-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--ria-border);
    color: var(--ria-text);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--ria-transition);
}
.ria-cat-item:last-child { border-bottom: 0; }
.ria-cat-item:hover { color: var(--ria-accent); padding-left: 6px; }
.ria-cat-item__count {
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--ria-accent-light);
    color: var(--ria-accent);
    padding: 2px 10px;
    border-radius: 100px;
}

/* ---- POST PAGE ---- */
.ria-main--post { padding: 32px 0 80px; }

.ria-post { max-width: 780px; margin: 0 auto; }

.ria-post__breadcrumb {
    display: flex;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--ria-text-dim);
    margin-bottom: 20px;
}
.ria-post__breadcrumb a { color: var(--ria-text-muted); }
.ria-post__breadcrumb a:hover { color: var(--ria-accent); }

.ria-post__badges {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.ria-post__title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.03em;
    color: #fff;
    margin-bottom: 16px;
}

.ria-post__meta {
    display: flex;
    gap: 20px;
    font-size: 0.84rem;
    color: var(--ria-text-dim);
    margin-bottom: 40px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--ria-border);
    flex-wrap: wrap;
}

.ria-post__ai-badge {
    background: rgba(139, 92, 246, 0.15);
    color: #a78bfa;
    padding: 2px 10px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
}

.ria-post__content {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--ria-text);
}
.ria-post__content h2, .ria-post__content h3 {
    color: #fff;
    margin: 32px 0 12px;
    font-weight: 700;
    letter-spacing: -0.02em;
}
.ria-post__content h2 { font-size: 1.5rem; }
.ria-post__content h3 { font-size: 1.2rem; }
.ria-post__content p { margin-bottom: 16px; color: var(--ria-text-muted); }
.ria-post__content strong { color: var(--ria-text); }
.ria-post__content ul, .ria-post__content ol {
    margin: 12px 0 20px 24px;
    color: var(--ria-text-muted);
}
.ria-post__content li { margin-bottom: 6px; }
.ria-post__content blockquote {
    border-left: 3px solid var(--ria-accent);
    padding: 16px 20px;
    margin: 20px 0;
    background: var(--ria-bg-card);
    border-radius: 0 var(--ria-radius-sm) var(--ria-radius-sm) 0;
}

.ria-post__source {
    margin-top: 32px;
    padding: 16px 20px;
    background: var(--ria-bg-card);
    border: 1px solid var(--ria-border);
    border-radius: var(--ria-radius-sm);
    font-size: 0.875rem;
    color: var(--ria-text-muted);
}

/* ---- CATEGORY PAGE ---- */
.ria-category-header {
    margin-bottom: 40px;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--ria-border);
}
.ria-category-header__title {
    font-size: 2rem;
    font-weight: 800;
    color: #fff;
    letter-spacing: -0.03em;
    margin: 12px 0 8px;
}
.ria-category-header__desc { color: var(--ria-text-muted); }
.ria-category-header__count {
    display: inline-block;
    margin-top: 12px;
    font-size: 0.8rem;
    color: var(--ria-accent);
    background: var(--ria-accent-light);
    padding: 4px 12px;
    border-radius: 100px;
}

/* ---- RELATED ---- */
.ria-related { margin-top: 60px; padding-top: 40px; border-top: 1px solid var(--ria-border); }

/* ---- PAGINATION ---- */
.ria-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-top: 40px;
}
.ria-pagination__btn {
    background: var(--ria-bg-card);
    border: 1px solid var(--ria-border);
    color: var(--ria-text);
    padding: 8px 20px;
    border-radius: var(--ria-radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--ria-transition);
}
.ria-pagination__btn:hover { border-color: var(--ria-accent); color: var(--ria-accent); }
.ria-pagination__info { font-size: 0.84rem; color: var(--ria-text-dim); }

/* ---- EMPTY ---- */
.ria-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: var(--ria-text-dim);
}

/* ---- BUTTONS ---- */
.ria-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--ria-font);
    font-size: 0.875rem;
    font-weight: 600;
    padding: 10px 22px;
    border-radius: var(--ria-radius-sm);
    border: none;
    cursor: pointer;
    transition: all var(--ria-transition);
    text-decoration: none;
}
.ria-btn--primary { background: var(--ria-accent); color: #fff; }
.ria-btn--primary:hover { background: var(--ria-accent-hover); color: #fff; transform: translateY(-1px); }

/* ---- FOOTER ---- */
.ria-footer {
    border-top: 1px solid var(--ria-border);
    padding: 40px 0;
    margin-top: auto;
}
.ria-footer__inner {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.ria-footer__brand { max-width: 340px; }
.ria-footer__logo {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--ria-accent);
}
.ria-footer__desc { font-size: 0.84rem; color: var(--ria-text-dim); margin-top: 6px; }
.ria-footer__links { display: flex; gap: 20px; }
.ria-footer__links a { color: var(--ria-text-muted); font-size: 0.84rem; }
.ria-footer__links a:hover { color: var(--ria-accent); }
.ria-footer__copy { font-size: 0.78rem; color: var(--ria-text-dim); }
.ria-footer__sigla { font-size: 0.75rem; color: var(--ria-text-muted); line-height: 1.7; }
.ria-footer__sigla strong { color: var(--ria-accent); }
.ria-footer__credit { font-size: 0.8rem; color: var(--ria-text-muted); }
.ria-footer__credit a { color: var(--ria-accent); font-weight: 600; }
.ria-footer__credit a:hover { color: var(--ria-accent-bright, #ff7a3d); }

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
    .ria-main__grid { grid-template-columns: 1fr; }
    .ria-sidebar { position: static; display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
}

@media (max-width: 768px) {
    .ria-nav__links { display: none; }
    .ria-nav__toggle { display: block; }
    .ria-hero { padding: 48px 0 40px; }
    .ria-hero__stats { gap: 24px; flex-wrap: wrap; }
    .ria-posts__grid { grid-template-columns: 1fr; }
    .ria-sidebar { grid-template-columns: 1fr; }
    .ria-post__title { font-size: 1.5rem; }
}

@media (max-width: 480px) {
    .ria-container { padding: 0 16px; }
    .ria-card { padding: 18px; }
    .ria-section-header { flex-direction: column; align-items: flex-start; }
}

/* ---- ANIMATIONS ---- */
@media (prefers-reduced-motion: no-preference) {
    .ria-card { animation: riaFadeUp 0.4s ease both; }
    .ria-card:nth-child(2) { animation-delay: 0.06s; }
    .ria-card:nth-child(3) { animation-delay: 0.12s; }
    .ria-card:nth-child(4) { animation-delay: 0.18s; }
    .ria-card:nth-child(5) { animation-delay: 0.24s; }
    .ria-card:nth-child(6) { animation-delay: 0.30s; }
}

@keyframes riaFadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}