/* ------------------------------------------------------------------
   LicitaAI — página inicial (landing page)
   Identidade visual derivada do favicon: espiral azul #025FF6.
   Os estilos abaixo valem apenas para a landing; as páginas internas
   continuam usando css/estilo.css.
   ------------------------------------------------------------------ */

:root {
    --licitaai-brand: #025ff6;
    --licitaai-brand-hover: #0151d1;
    --licitaai-brand-soft: #eaf2fe;
    --licitaai-brand-border: #cfe0fd;
    --licitaai-ink: #16202c;
    --licitaai-muted: #5b6673;
    --licitaai-border: #e3e8ef;
    --licitaai-bg-soft: #f6f9fd;
    --licitaai-green: #157347;
    --licitaai-green-bg: #dff3e4;
    --licitaai-green-border: #b9e3c8;
}

html {
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
}

body {
    background-color: #ffffff;
    color: var(--licitaai-ink);
}

/* Âncoras das seções não ficam escondidas atrás do cabeçalho fixo. */
section[id] {
    scroll-margin-top: 84px;
}

/* ------------------------------------------------------------------
   Cabeçalho
   ------------------------------------------------------------------ */

.landing-header {
    position: sticky;
    top: 0;
    z-index: 1030;
    background-color: #ffffff;
    border-bottom: 1px solid var(--licitaai-border);
}

.landing-header .navbar {
    padding-top: 0.65rem;
    padding-bottom: 0.65rem;
}

.brand-name {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--licitaai-ink);
    letter-spacing: -0.01em;
}

@media (min-width: 576px) {
    .brand-name {
        font-size: 1.35rem;
    }
}

.brand-accent {
    color: var(--licitaai-brand);
}

.logo-spiral {
    /* O PNG do favicon já é o símbolo oficial; mantém proporção 1:1. */
    flex-shrink: 0;
}

.landing-header .nav-link {
    color: var(--licitaai-muted);
    font-weight: 500;
    padding-left: 0.9rem;
    padding-right: 0.9rem;
}

.landing-header .nav-link:hover,
.landing-header .nav-link:focus {
    color: var(--licitaai-brand);
}

/* ------------------------------------------------------------------
   Botões da marca (Login / Inscreva-se)
   ------------------------------------------------------------------ */

.btn-brand {
    background-color: var(--licitaai-brand);
    border: 1px solid var(--licitaai-brand);
    color: #ffffff;
    font-weight: 600;
}

.btn-brand:hover,
.btn-brand:focus {
    background-color: var(--licitaai-brand-hover);
    border-color: var(--licitaai-brand-hover);
    color: #ffffff;
}

.btn-outline-brand {
    color: var(--licitaai-brand);
    border: 1px solid var(--licitaai-brand);
    background-color: transparent;
    font-weight: 600;
}

.btn-outline-brand:hover,
.btn-outline-brand:focus {
    background-color: var(--licitaai-brand-soft);
    border-color: var(--licitaai-brand);
    color: var(--licitaai-brand-hover);
}

.btn-brand:focus-visible,
.btn-outline-brand:focus-visible,
.btn-cta:focus-visible {
    outline: none;
    box-shadow: 0 0 0 0.25rem rgba(2, 95, 246, 0.25);
}

/* Botões do cabeçalho: compactos no celular (para caber ao lado da marca),
   confortáveis em telas maiores. */
.btn-auth {
    padding: 0.35rem 0.7rem;
    font-size: 0.9rem;
}

@media (min-width: 576px) {
    .btn-auth {
        padding: 0.45rem 1.15rem;
        font-size: 1rem;
    }
}

/* ------------------------------------------------------------------
   Hero
   ------------------------------------------------------------------ */

.hero {
    background-color: var(--licitaai-bg-soft);
    border-bottom: 1px solid var(--licitaai-border);
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.85rem;
    margin-bottom: 1.25rem;
    background-color: var(--licitaai-brand-soft);
    border: 1px solid var(--licitaai-brand-border);
    color: var(--licitaai-brand-hover);
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 600;
}

.hero-title {
    font-size: clamp(1.85rem, 4.2vw, 2.9rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.15;
    color: var(--licitaai-ink);
    margin-bottom: 1rem;
}

.text-brand {
    color: var(--licitaai-brand);
}

.hero-subtitle {
    font-size: 1.125rem;
    line-height: 1.55;
    color: var(--licitaai-muted);
    max-width: 34rem;
    margin-bottom: 1.75rem;
}

.hero-note {
    color: var(--licitaai-muted);
    margin-top: 1.1rem;
    margin-bottom: 0;
}

/* ------------------------------------------------------------------
   Representação ilustrativa da interface de busca
   ------------------------------------------------------------------ */

.hero-visual {
    max-width: 34rem;
    margin-left: auto;
}

.visual-label {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    margin: 0;
    padding: 0.35rem 0.8rem;
    background-color: #ffffff;
    border: 1px solid var(--licitaai-border);
    border-bottom: 0;
    border-radius: 0.6rem 0.6rem 0 0;
    font-size: 0.8rem;
    color: var(--licitaai-muted);
}

.visual-window {
    background-color: #ffffff;
    border: 1px solid var(--licitaai-border);
    border-radius: 0 1rem 1rem 1rem;
    padding: 1.25rem;
    box-shadow: 0 20px 44px -20px rgba(22, 32, 44, 0.28);
}

.visual-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.1rem;
    padding-bottom: 1.1rem;
    border-bottom: 1px solid var(--licitaai-border);
}

.visual-search {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.75rem;
    border: 1px solid var(--licitaai-border);
    background-color: var(--licitaai-bg-soft);
    border-radius: 0.5rem;
    font-size: 0.85rem;
    /* Ícone da lupa e texto escuros sobre o fundo claro: contraste legível
       (o ícone usa a cor do texto — currentColor do Bootstrap Icons). */
    color: var(--licitaai-ink);
}

.visual-chip {
    padding: 0.35rem 0.7rem;
    border: 1px solid var(--licitaai-border);
    border-radius: 0.5rem;
    font-size: 0.8rem;
    color: var(--licitaai-muted);
    background-color: #ffffff;
}

.visual-chip-active {
    background-color: var(--licitaai-brand-soft);
    border-color: var(--licitaai-brand-border);
    color: var(--licitaai-brand-hover);
    font-weight: 600;
}

.visual-result {
    border: 1px solid var(--licitaai-border);
    border-radius: 0.75rem;
    padding: 1rem;
    margin-bottom: 0.9rem;
}

.visual-result:last-child {
    margin-bottom: 0;
}

.visual-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 0.6rem;
}

.visual-aberto {
    background-color: var(--licitaai-green-bg);
    color: var(--licitaai-green);
    border: 1px solid var(--licitaai-green-border);
    font-weight: 500;
}

.visual-orgao {
    margin: 0 0 0.15rem;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--licitaai-muted);
}

.visual-objeto {
    margin: 0 0 0.6rem;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--licitaai-ink);
}

.visual-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem 1.1rem;
    font-size: 0.8rem;
    color: var(--licitaai-muted);
}

.visual-meta i {
    color: var(--licitaai-brand);
}

/* ------------------------------------------------------------------
   Seções e cartões
   ------------------------------------------------------------------ */

.section-pad {
    padding: 4rem 0;
}

@media (min-width: 992px) {
    .section-pad {
        padding: 5rem 0;
    }
}

.section-alt {
    background-color: var(--licitaai-bg-soft);
    border-top: 1px solid var(--licitaai-border);
    border-bottom: 1px solid var(--licitaai-border);
}

.section-heading {
    max-width: 46rem;
    margin: 0 auto 2.75rem;
    text-align: center;
}

.section-heading h2 {
    font-size: clamp(1.5rem, 3vw, 2.1rem);
    font-weight: 800;
    letter-spacing: -0.015em;
    color: var(--licitaai-ink);
    margin-bottom: 0.75rem;
}

.section-heading p {
    font-size: 1.05rem;
    color: var(--licitaai-muted);
    margin-bottom: 0;
}

.section-note {
    max-width: 46rem;
    margin: 2rem auto 0;
    text-align: center;
    font-size: 0.9rem;
    color: var(--licitaai-muted);
}

.feature-card {
    height: 100%;
    background-color: #ffffff;
    border: 1px solid var(--licitaai-border);
    border-radius: 1rem;
    padding: 1.5rem;
    transition: box-shadow 0.15s ease, transform 0.15s ease;
}

.feature-card:hover {
    box-shadow: 0 16px 32px -20px rgba(22, 32, 44, 0.22);
    transform: translateY(-2px);
}

@media (prefers-reduced-motion: reduce) {
    .feature-card {
        transition: none;
    }

    .feature-card:hover {
        transform: none;
    }
}

.feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    margin-bottom: 1rem;
    border-radius: 0.75rem;
    background-color: var(--licitaai-brand-soft);
    color: var(--licitaai-brand);
    font-size: 1.35rem;
}

.feature-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--licitaai-ink);
    margin-bottom: 0.5rem;
}

.feature-card p {
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--licitaai-muted);
    margin-bottom: 0;
}

/* ------------------------------------------------------------------
   Como funciona (etapas numeradas)
   ------------------------------------------------------------------ */

.step-card {
    height: 100%;
    text-align: center;
    background-color: #ffffff;
    border: 1px solid var(--licitaai-border);
    border-top: 3px solid var(--licitaai-brand);
    border-radius: 1rem;
    padding: 1.75rem 1.5rem;
}

.step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    margin: 0 auto 1rem;
    border-radius: 50%;
    background-color: var(--licitaai-brand);
    color: #ffffff;
    font-size: 1.15rem;
    font-weight: 700;
}

.step-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--licitaai-ink);
    margin-bottom: 0.5rem;
}

.step-card p {
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--licitaai-muted);
    margin-bottom: 0;
}

/* ------------------------------------------------------------------
   Chamada para ação
   ------------------------------------------------------------------ */

.cta-section {
    padding-bottom: 4rem;
}

.cta-panel {
    position: relative;
    overflow: hidden;
    text-align: center;
    background-color: var(--licitaai-brand);
    border-radius: 1.25rem;
    color: #ffffff;
    padding: 3rem 1.5rem;
}

@media (min-width: 768px) {
    .cta-panel {
        padding: 3.5rem 2.5rem;
    }
}

.cta-panel h2 {
    font-weight: 800;
    letter-spacing: -0.015em;
    margin-bottom: 0.75rem;
}

.cta-panel p {
    max-width: 40rem;
    margin: 0 auto 1.75rem;
    color: rgba(255, 255, 255, 0.94);
}

.cta-spiral {
    position: absolute;
    right: -2rem;
    bottom: -2rem;
    opacity: 0.14;
    pointer-events: none;
}

.btn-cta {
    background-color: #ffffff;
    color: var(--licitaai-brand);
    border: 1px solid #ffffff;
    font-weight: 700;
    padding: 0.55rem 1.75rem;
}

.btn-cta:hover,
.btn-cta:focus {
    background-color: var(--licitaai-brand-soft);
    border-color: var(--licitaai-brand-soft);
    color: var(--licitaai-brand-hover);
}

.cta-login-link {
    color: #ffffff;
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.cta-login-link:hover,
.cta-login-link:focus {
    color: var(--licitaai-brand-soft);
}

/* ------------------------------------------------------------------
   Rodapé
   ------------------------------------------------------------------ */

.landing-footer {
    background-color: var(--licitaai-bg-soft);
    border-top: 1px solid var(--licitaai-border);
    padding: 3rem 0 2rem;
    font-size: 0.925rem;
    color: var(--licitaai-muted);
}

.footer-brand {
    display: flex;
    align-items: center;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--licitaai-ink);
    margin-bottom: 0.5rem;
}

.landing-footer a {
    color: var(--licitaai-ink);
    font-weight: 500;
    text-decoration: none;
}

.landing-footer a:hover,
.landing-footer a:focus {
    color: var(--licitaai-brand);
}

.footer-divider {
    border-color: var(--licitaai-border);
    opacity: 1;
}