/* =====================================================================
   CertSafe - Tela de login
   Arquivo: assets/css/login.css
   ===================================================================== */

/* ---------------------------------------------------------------------
   Fontes auto-hospedadas (WOFF2) - reduz payload e elimina handshake
   externo para fontes de terceiros, otimizando o LCP e o TTFB percebido.
   --------------------------------------------------------------------- */
@font-face {
    font-family: 'Inter';
    src: url('../fonts/Inter-Regular.woff2') format('woff2');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Inter';
    src: url('../fonts/Inter-Medium.woff2') format('woff2');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Inter';
    src: url('../fonts/Inter-SemiBold.woff2') format('woff2');
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Inter';
    src: url('../fonts/Inter-Bold.woff2') format('woff2');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Poppins';
    src: url('../fonts/Poppins-SemiBold.woff2') format('woff2');
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Poppins';
    src: url('../fonts/Poppins-Bold.woff2') format('woff2');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

/* ---------------------------------------------------------------------
   Tokens de design: definidos em /assets/css/tokens.css, carregado via
   <link> separado no HTML (antes deste arquivo) para evitar a cadeia
   sequencial de requisicoes que o @import provocaria.
   --------------------------------------------------------------------- */

/* ---------------------------------------------------------------------
   Reset basico e configuracoes globais
   --------------------------------------------------------------------- */
* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    height: 100%;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--cs-fundo-pagina);
    color: var(--cs-texto-primario);
    -webkit-font-smoothing: antialiased;
}

/* Camada de fundo com gradiente e auroras coloridas, fixa por tras de
   tudo - e o que da o ambiente "vidro" aos paineis flutuantes acima. */
.fundo-aurora {
    position: fixed;
    inset: 0;
    z-index: -1;
    background: var(--cs-gradiente-marca);
}

.fundo-aurora::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--cs-gradiente-aurora);
    opacity: 0.9;
}

/* ---------------------------------------------------------------------
   Alternador de tema (claro/escuro) - fixo no canto superior direito,
   disponivel tambem na tela de login.
   --------------------------------------------------------------------- */
.alternador-tema {
    position: fixed;
    top: 22px;
    right: 22px;
    z-index: 10;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 1px solid var(--cs-vidro-borda);
    background: var(--cs-vidro-fundo);
    backdrop-filter: blur(var(--cs-vidro-blur));
    -webkit-backdrop-filter: blur(var(--cs-vidro-blur));
    color: var(--cs-white);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform var(--cs-transicao-rapida), background var(--cs-transicao-rapida);
}

.alternador-tema:hover {
    transform: scale(1.06);
}

.alternador-tema .icone-lua { display: none; }
html[data-tema="escuro"] .alternador-tema .icone-sol { display: none; }
html[data-tema="escuro"] .alternador-tema .icone-lua { display: inline-flex; }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
}

/* ---------------------------------------------------------------------
   Estrutura geral: layout dividido (split-screen)
   --------------------------------------------------------------------- */
.tela-login {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 28px;
    gap: 28px;
}

/* ---------------------------------------------------------------------
   Painel institucional (esquerda)
   --------------------------------------------------------------------- */
.painel-marca {
    position: relative;
    display: flex;
    flex: 1.05 1 0%;
    max-width: 620px;
    align-self: stretch;
    align-items: center;
    justify-content: center;
    padding: 64px 72px;
    overflow: hidden;
    border-radius: var(--cs-raio-lg);
    background: linear-gradient(165deg, var(--cs-navy-800) 0%, var(--cs-navy-900) 100%);
    box-shadow: var(--cs-sombra-cartao);
}

.painel-marca__fundo {
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 18% 22%, rgba(0, 184, 169, 0.22), transparent 42%),
        radial-gradient(circle at 82% 12%, rgba(124, 111, 227, 0.18), transparent 45%),
        radial-gradient(circle at 82% 78%, rgba(59, 130, 246, 0.14), transparent 45%);
}

/* Aneis concentricos decorativos, remetendo a varredura/monitoramento */
.painel-marca__anel {
    position: absolute;
    top: 50%;
    left: 38%;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    transform: translate(-50%, -50%);
}

.painel-marca__anel--1 { width: 420px; height: 420px; animation: cs-pulsar 7s ease-in-out infinite; }
.painel-marca__anel--2 { width: 620px; height: 620px; animation: cs-pulsar 7s ease-in-out infinite 1.2s; }
.painel-marca__anel--3 { width: 820px; height: 820px; animation: cs-pulsar 7s ease-in-out infinite 2.4s; }

@keyframes cs-pulsar {
    0%, 100% { opacity: 0.35; }
    50% { opacity: 0.75; }
}

.painel-marca__conteudo {
    position: relative;
    z-index: 1;
    max-width: 460px;
    color: var(--cs-white);
}

.painel-marca__selo {
    width: 88px;
    height: 88px;
    margin-bottom: 32px;
    filter: drop-shadow(0 12px 24px rgba(0, 0, 0, 0.25));
}

.painel-marca__titulo {
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    font-size: 34px;
    line-height: 1.25;
    margin: 0 0 18px;
    letter-spacing: -0.5px;
}

.painel-marca__texto {
    font-size: 16px;
    line-height: 1.65;
    color: var(--cs-slate-300);
    margin: 0 0 36px;
}

.painel-marca__lista {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
    font-size: 15px;
    color: var(--cs-white);
}

.painel-marca__lista li {
    display: flex;
    align-items: center;
    gap: 12px;
}

.painel-marca__icone-check {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    border-radius: 50%;
    background: rgba(0, 184, 169, 0.18);
    color: var(--cs-teal-300);
    font-size: 13px;
}

/* ---------------------------------------------------------------------
   Painel de autenticacao (direita)
   --------------------------------------------------------------------- */
.painel-form {
    display: flex;
    flex: 1 1 0%;
    max-width: 480px;
    align-self: stretch;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 44px;
    border-radius: var(--cs-raio-lg);
    background: var(--cs-vidro-fundo-forte);
    border: 1px solid var(--cs-vidro-borda);
    backdrop-filter: blur(var(--cs-vidro-blur));
    -webkit-backdrop-filter: blur(var(--cs-vidro-blur));
    box-shadow: var(--cs-vidro-sombra);
}

.cartao-login {
    width: 100%;
    max-width: 380px;
    overflow: hidden;
}

.cartao-login__cabecalho {
    margin-bottom: 36px;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--cs-borda-sutil);
    display: flex;
    align-items: center;
    justify-content: center;
}

.cartao-login__logo {
    height: 96px;
    width: auto;
    display: block;
}

.cartao-login__logo--escura { display: none; }
html[data-tema="escuro"] .cartao-login__logo--clara { display: none; }
html[data-tema="escuro"] .cartao-login__logo--escura { display: block; }

/* ---------------------------------------------------------------------
   Etapas do formulario (transicao entre credenciais e A2F)
   --------------------------------------------------------------------- */
.etapa {
    animation: cs-entrada-etapa var(--cs-transicao-media) both;
}

.etapa--oculta {
    display: none;
}

@keyframes cs-entrada-etapa {
    from { opacity: 0; transform: translateX(18px); }
    to   { opacity: 1; transform: translateX(0); }
}

.etapa__titulo {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    font-size: 24px;
    margin: 0 0 8px;
    color: var(--cs-texto-primario);
}

.etapa__subtitulo {
    font-size: 14.5px;
    line-height: 1.55;
    color: var(--cs-texto-secundario);
    margin: 0 0 32px;
}

.botao-voltar {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: none;
    border: none;
    padding: 0;
    margin-bottom: 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--cs-texto-secundario);
    cursor: pointer;
    transition: color var(--cs-transicao-rapida);
}

.botao-voltar:hover {
    color: var(--cs-texto-primario);
}

/* ---------------------------------------------------------------------
   Campos de formulario
   --------------------------------------------------------------------- */
.campo {
    margin-bottom: 20px;
}

.campo label {
    display: block;
    font-size: 13.5px;
    font-weight: 600;
    color: var(--cs-texto-primario);
    margin-bottom: 8px;
}

.campo input {
    width: 100%;
    height: 48px;
    padding: 0 16px;
    font-size: 15px;
    font-family: 'Inter', sans-serif;
    color: var(--cs-texto-primario);
    background: var(--cs-fundo-pagina);
    border: 1.5px solid transparent;
    border-radius: var(--cs-raio-sm);
    outline: none;
    transition: border-color var(--cs-transicao-rapida), background var(--cs-transicao-rapida), box-shadow var(--cs-transicao-rapida);
}

.campo input::placeholder {
    color: var(--cs-texto-secundario);
}

.campo input:hover {
    background: var(--cs-superficie-hover);
}

.campo input:focus,
.campo input:focus-visible {
    background: var(--cs-superficie);
    border-color: var(--cs-teal-500);
    box-shadow: 0 0 0 4px rgba(0, 184, 169, 0.14);
}

.campo input:invalid:not(:placeholder-shown):not(:focus) {
    border-color: var(--cs-danger-500);
}

.campo__senha-wrapper {
    position: relative;
}

.campo__senha-wrapper input {
    padding-right: 48px;
}

.botao-exibir-senha {
    position: absolute;
    top: 50%;
    right: 4px;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--cs-texto-secundario);
    cursor: pointer;
    border-radius: var(--cs-raio-sm);
    transition: color var(--cs-transicao-rapida), background var(--cs-transicao-rapida);
}

.botao-exibir-senha:hover {
    color: var(--cs-texto-primario);
    background: rgba(11, 31, 61, 0.06);
}

.campo--codigo input {
    text-align: center;
    font-family: 'JetBrains Mono', monospace;
    font-size: 26px;
    font-weight: 500;
    letter-spacing: 10px;
    padding-left: 8px;
}

/* ---------------------------------------------------------------------
   Mensagens de validacao / erro
   --------------------------------------------------------------------- */
.campo-mensagem {
    min-height: 0;
    font-size: 13.5px;
    color: var(--cs-danger-500);
    background: var(--cs-danger-bg);
    border-radius: var(--cs-raio-sm);
    padding: 0;
    margin-bottom: 0;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height var(--cs-transicao-media), opacity var(--cs-transicao-media), padding var(--cs-transicao-media), margin var(--cs-transicao-media);
}

.campo-mensagem.visivel {
    max-height: 80px;
    opacity: 1;
    padding: 12px 14px;
    margin-bottom: 20px;
}

/* ---------------------------------------------------------------------
   Botao primario
   --------------------------------------------------------------------- */
.botao-primario {
    position: relative;
    width: 100%;
    height: 50px;
    border: none;
    border-radius: var(--cs-raio-sm);
    background: linear-gradient(135deg, var(--cs-navy-800) 0%, var(--cs-navy-900) 100%);
    color: var(--cs-white);
    font-family: 'Inter', sans-serif;
    font-size: 15.5px;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--cs-transicao-rapida), transform var(--cs-transicao-rapida);
}

.botao-primario:hover {
    background: linear-gradient(135deg, #102a52 0%, var(--cs-navy-800) 100%);
}

.botao-primario:active {
    transform: scale(0.98);
}

.botao-primario:disabled {
    cursor: not-allowed;
    opacity: 0.75;
}

.botao-primario__spinner {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    width: 18px;
    height: 18px;
    margin: -9px 0 0 -9px;
    border: 2px solid rgba(255, 255, 255, 0.35);
    border-top-color: var(--cs-white);
    border-radius: 50%;
}

.botao-primario.carregando .botao-primario__texto {
    visibility: hidden;
}

.botao-primario.carregando .botao-primario__spinner {
    display: block;
    animation: cs-girar 700ms linear infinite;
}

@keyframes cs-girar {
    to { transform: rotate(360deg); }
}

/* ---------------------------------------------------------------------
   Links e rodape
   --------------------------------------------------------------------- */
.link-secundario {
    display: block;
    text-align: center;
    margin-top: 24px;
    font-size: 14px;
    font-weight: 500;
    color: var(--cs-teal-600);
    text-decoration: none;
    transition: color var(--cs-transicao-rapida);
}

.link-secundario:hover {
    color: var(--cs-texto-primario);
    text-decoration: underline;
}

.rodape-login {
    margin-top: 40px;
    font-size: 12.5px;
    color: var(--cs-texto-secundario);
    text-align: center;
}

/* ---------------------------------------------------------------------
   Responsivo: o painel institucional sai de cena em telas estreitas
   --------------------------------------------------------------------- */
@media (max-width: 980px) {
    .tela-login {
        flex-direction: column;
    }

    .painel-marca {
        display: none;
    }

    .painel-form {
        padding: 40px 24px;
    }
}

@media (max-width: 420px) {
    .etapa__titulo {
        font-size: 21px;
    }
}