/* ========= PALETA (inspirada no site TCM) ========= */
:root {
    --tcm-red: #a30d14;
    /* vermelho principal */
    --tcm-red-dark: #7d0f13;
    /* vermelho escuro */
    --tcm-bg: #ffffff;
    /* fundo claro */
    --tcm-text: #111111;
    /* texto primário */
    --tcm-muted: #6b7280;
    /* texto secundário */
    --tcm-border: #e5e7eb;
    /* bordas suaves */
    --tcm-surface: #f7f7f8;
    /* cards */
}

/* ========= RESET SUAVE ========= */
* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
    background: var(--tcm-bg);
    color: var(--tcm-text);
    line-height: 1.5;
}

/* ========= LAYOUT ========= */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 24px 16px;
}

.header {
    background: var(--tcm-red);
    color: #fff;
}

.header-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 12px 16px;
    display: flex;
    gap: 12px;
    /* align-items: center; */
    justify-content: center;
}

.brand {
    font-weight: 700;
    letter-spacing: .3px;
}

.nav {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav .user {
    opacity: .9;
}

/* botão “Sair” com cara de link */
.btn-link {
    background: transparent;
    border: none;
    color: #fff;
    cursor: pointer;
    padding: 0;
    font: inherit;
    text-decoration: underline;
}

.btn-link:hover {
    opacity: .9;
}

/* ========= TIPOGRAFIA ========= */
h1 {
    font-size: clamp(20px, 2.2vw, 28px);
    margin: 0 0 12px 0;
}

.lead {
    color: var(--tcm-muted);
    margin: 0 0 16px 0;
}

/* ========= CARTÕES ========= */
.card {
    background: var(--tcm-surface);
    border: 1px solid var(--tcm-border);
    border-radius: 14px;
    padding: 18px;
}

/* ========= FORMULÁRIOS (login) ========= */
.form {
    max-width: 380px;
    margin: 40px auto;
    background: #fff;
    border: 1px solid var(--tcm-border);
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, .04);
}

.form h1 {
    text-align: center;
    margin-bottom: 6px;
}

.form .hint {
    text-align: center;
    color: var(--tcm-muted);
    margin-bottom: 16px;
}

.field {
    display: grid;
    gap: 6px;
    margin-bottom: 14px;
}

label {
    font-size: 14px;
    color: var(--tcm-muted);
}

input[type="text"],
input[type="password"] {
    width: 100%;
    border: 1px solid var(--tcm-border);
    border-radius: 10px;
    padding: 10px 12px;
    font-size: 15px;
    outline: none;
    background: #fff;
}

input:focus {
    border-color: var(--tcm-red);
    box-shadow: 0 0 0 3px rgba(163, 13, 20, .15);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 10px 14px;
    border-radius: 10px;
    border: none;
    background: var(--tcm-red);
    color: #fff;
    font-weight: 600;
    letter-spacing: .2px;
    cursor: pointer;
}

.btn:hover {
    background: var(--tcm-red-dark);
}

/* mensagem de erro simples */
.alert {
    background: #fff2f2;
    border: 1px solid #ffd6d6;
    color: #7a0f13;
    border-radius: 10px;
    padding: 10px 12px;
    margin-bottom: 12px;
    font-size: 14px;
}

/* ========= IFRAME RESPONSIVO ========= */
/* Mantém o iframe dentro de um “card”, centralizado e com altura adaptável */
.iframe-wrap {
    border: 1px solid var(--tcm-border);
    border-radius: 14px;
    overflow: hidden;
    background: #fff;
}

.iframe-el {
    width: 100%;
    height: min(100vh, 910px);
    /* desktop: até 900px, mas adapta à altura da janela */
    border: 0;
}

@media (max-width: 768px) {
    .iframe-el {
        height: 78vh;
    }
}

/* ========= MENSAGENS DJANGO ========= */
.messages {
    list-style: none;
    padding: 0;
    margin: 16px auto;
    max-width: 600px;
}

.messages li {
    background: #f1f5f9;
    border: 1px solid #e2e8f0;
    padding: 10px 12px;
    border-radius: 10px;
    margin-bottom: 8px;
}