/* ===================================================================
   IDIOMAS — landing publica (/idiomas, visitante deslogado)
   DAGOBERTO STYLE — direcao "editorial premium" com a paleta do MOTOR
   de estudo (violeta/ciano), pra landing e produto parecerem a mesma
   coisa. Tudo escopado em .idm-* (nao depende de Tailwind: sem rebuild).
   Regras: docs/design.md
   =================================================================== */

/* ================================================================= */
/* VARIAVEIS — cada acento tem PAPEL semantico                       */
/* ================================================================= */
:root {
    --idm-ink: #070917;          /* a noite / o mundo — fundo do hero */
    --idm-ink-2: #0e1236;
    --idm-violet: #6c63ff;       /* O MOTOR (a plataforma, o app) */
    --idm-violet-soft: #a5a0ff;
    --idm-cyan: #00d4ff;         /* O SOM (audio, pronuncia, ouvir) */
    --idm-mint: #4ecdc4;         /* A MEMORIA (SM-2, acerto, revisao) */
    --idm-amber: #ffd93d;        /* O PROGRESSO (XP, streak, conquista) */
    --idm-rose: #ff6b9d;         /* AS PESSOAS (nativos, ranking) */
    --idm-grain: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.4'/%3E%3C/svg%3E");
}

/* ================================================================= */
/* BASE                                                              */
/* ================================================================= */
.idm-wrap {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 1.25rem;
}
.idm-sec { padding: 5rem 0; }
.idm-sec--bg { background: var(--bg); }
.idm-sec--surface { background: var(--surface); }
.idm-center { text-align: center; }

/* Cartao sempre um degrau acima do fundo da secao — senao, no escuro,
   cartao e secao ficam da MESMA cor e so a borda separa. */
.idm-card,
.idm-numero,
.idm-plano,
.idm-idioma,
.idm-faq details,
.idm-demo-dica span { background: var(--surface); }
.idm-sec--surface .idm-card,
.idm-sec--surface .idm-numero,
.idm-sec--surface .idm-plano,
.idm-sec--surface .idm-idioma,
.idm-sec--surface .idm-faq details,
.idm-sec--surface .idm-demo-dica span { background: var(--bg); }

.idm-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    font-size: .8125rem;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: #4f46e5;
    margin-bottom: 1rem;
}
[data-theme="dark"] .idm-eyebrow { color: var(--idm-violet-soft); }
.idm-eyebrow::before {
    content: "";
    width: 1.75rem;
    height: 2px;
    border-radius: 2px;
    background: currentColor;
    opacity: .5;
}

.idm-h2 {
    font-size: clamp(1.75rem, 1.1rem + 2.6vw, 2.75rem);
    line-height: 1.12;
    letter-spacing: -.025em;
    font-weight: 700;
    color: var(--text);
    margin: 0 0 1rem;
    text-wrap: balance;
}
.idm-lead {
    font-size: clamp(1rem, .95rem + .35vw, 1.1875rem);
    line-height: 1.65;
    color: var(--muted);
    max-width: 42rem;
    margin: 0 0 3rem;
    text-wrap: pretty;
}
.idm-center .idm-lead { margin-left: auto; margin-right: auto; }

.idm-grad {
    background: linear-gradient(100deg, var(--idm-cyan), var(--idm-violet-soft) 55%, var(--idm-rose));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

/* ================================================================= */
/* REVELACAO NO SCROLL (so esconde se o JS estiver vivo)             */
/* ================================================================= */
.idm-js .idm-rv {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity .7s cubic-bezier(.16, 1, .3, 1), transform .7s cubic-bezier(.16, 1, .3, 1);
    transition-delay: var(--rv-delay, 0s);
}
.idm-js .idm-rv.is-in { opacity: 1; transform: none; }

/* ================================================================= */
/* BOTOES                                                            */
/* ================================================================= */
.idm-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .625rem;
    min-height: 3.25rem;
    padding: 1rem 1.75rem;
    border-radius: 999px;
    font-size: 1.0625rem;
    font-weight: 700;
    text-decoration: none;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform .2s cubic-bezier(.16, 1, .3, 1), box-shadow .2s ease, background .2s ease, color .2s ease;
}
.idm-btn svg { width: 1.25rem; height: 1.25rem; flex-shrink: 0; }
.idm-btn--primary {
    background: linear-gradient(135deg, var(--idm-violet), #4f46e5 55%, #4338ca);
    color: #fff;
    box-shadow: 0 12px 32px -10px rgba(108, 99, 255, .85), inset 0 1px 0 rgba(255, 255, 255, .28);
}
.idm-btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 44px -12px rgba(108, 99, 255, .95), inset 0 1px 0 rgba(255, 255, 255, .28);
}
.idm-btn--ghost {
    background: rgba(255, 255, 255, .07);
    border-color: rgba(255, 255, 255, .24);
    color: #fff;
    backdrop-filter: blur(8px);
}
.idm-btn--ghost:hover { background: rgba(255, 255, 255, .14); transform: translateY(-2px); }
.idm-btn--solid {
    background: var(--idm-violet);
    color: #fff;
    box-shadow: 0 12px 28px -10px rgba(108, 99, 255, .8);
}
.idm-btn--solid:hover { transform: translateY(-2px); }
.idm-btn--linha {
    background: transparent;
    border-color: var(--border);
    color: var(--text);
    min-height: 2.75rem;
    padding: .75rem 1.5rem;
    font-size: .9375rem;
}
.idm-btn--linha:hover { border-color: var(--idm-violet); color: var(--idm-violet); transform: translateY(-2px); }

.idm-link-sub {
    display: inline-block;
    font-size: .9375rem;
    color: rgba(255, 255, 255, .72);
    text-decoration: underline;
    text-underline-offset: .25rem;
}
.idm-link-sub:hover { color: #fff; }

/* ================================================================= */
/* HERO                                                              */
/* ================================================================= */
.idm-hero {
    position: relative;
    isolation: isolate;
    overflow: hidden;
    color: #fff;
    padding: 4.5rem 0 5rem;
    background:
        radial-gradient(58rem 40rem at 78% 6%, rgba(108, 99, 255, .34), transparent 62%),
        radial-gradient(46rem 34rem at 6% 90%, rgba(0, 212, 255, .24), transparent 62%),
        radial-gradient(34rem 24rem at 52% -8%, rgba(255, 107, 157, .16), transparent 60%),
        linear-gradient(160deg, var(--idm-ink-2), var(--idm-ink) 58%, #03040c);
}
/* granulado: tira o "chapado" do gradiente */
.idm-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: var(--idm-grain);
    opacity: .26;
    mix-blend-mode: overlay;
    pointer-events: none;
    z-index: -1;
}
/* malha de 64px com mascara radial: profundidade sem imagem */
.idm-hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: radial-gradient(46rem 32rem at 72% 45%, #000, transparent 75%);
    -webkit-mask-image: radial-gradient(46rem 32rem at 72% 45%, #000, transparent 75%);
    pointer-events: none;
    z-index: -1;
}
.idm-hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
    gap: 3rem;
    align-items: center;
}
.idm-badge {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    padding: .5rem 1rem;
    border-radius: 999px;
    font-size: .875rem;
    font-weight: 600;
    color: #dcefff;
    background: rgba(0, 212, 255, .12);
    border: 1px solid rgba(0, 212, 255, .32);
    backdrop-filter: blur(6px);
}
.idm-badge svg { width: 1.05rem; height: 1.05rem; }

/* A largura util NAO e a viewport: o menu lateral come ~382px (design.md §7).
   Por isso a escala do H1 e menor que a do modelo — 68px estourava a coluna. */
.idm-hero h1 {
    font-size: clamp(2.25rem, 1.55rem + 2.3vw, 3.25rem);
    line-height: 1.04;
    letter-spacing: -.035em;
    font-weight: 700;
    margin: 1.5rem 0 1.25rem;
    text-wrap: balance;
    color: #fff;
}
.idm-hero__sub {
    font-size: clamp(1.0625rem, 1rem + .45vw, 1.3125rem);
    line-height: 1.6;
    color: rgba(255, 255, 255, .78);
    max-width: 34rem;
    margin: 0 0 2rem;
    text-wrap: pretty;
}
.idm-hero__sub strong { color: #fff; font-weight: 700; }
.idm-hero__acoes { display: flex; flex-wrap: wrap; gap: .875rem; align-items: center; }
/* leva o preco: nao pode cair abaixo do minimo de contraste (design.md §8) */
.idm-hero__nota {
    margin-top: 1.25rem;
    font-size: .875rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, .74);
}

/* pilulas de prova sob o CTA */
.idm-pills { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 2rem; }
.idm-pill {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    padding: .4rem .8rem;
    border-radius: 999px;
    font-size: .8125rem;
    font-weight: 600;
    color: rgba(255, 255, 255, .86);
    background: rgba(255, 255, 255, .06);
    border: 1px solid rgba(255, 255, 255, .14);
}
.idm-pill i {
    width: .5rem;
    height: .5rem;
    border-radius: 999px;
    background: var(--c, var(--idm-cyan));
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--c, var(--idm-cyan)) 22%, transparent);
}

/* ================================================================= */
/* HERO — O PALCO: a propria aula, desenhada em CSS (0 KB de rede)   */
/* ================================================================= */
/* O palco tem o tamanho da COLUNA; o cartao vive na area interna e as
   bandeiras ocupam a borda — assim uma nunca cobre a outra. */
.idm-palco {
    position: relative;
    width: 24rem;
    max-width: 100%;
    margin: 0 auto;
    padding: 3rem 3.5rem;
}
/* anel de orbita das bandeiras */
.idm-orbita {
    position: absolute;
    inset: 0;
    pointer-events: none;
}
.idm-orbita::before {
    content: "";
    position: absolute;
    inset: 1.5rem .5rem;
    border-radius: 50%;
    border: 1px dashed rgba(255, 255, 255, .13);
}
.idm-flag {
    position: absolute;
    display: grid;
    place-items: center;
    width: 3rem;
    height: 3rem;
    font-size: 1.5rem;
    border-radius: 50%;
    background: rgba(12, 15, 40, .86);
    border: 1px solid rgba(255, 255, 255, .16);
    box-shadow: 0 12px 28px -12px rgba(0, 0, 0, .9);
    backdrop-filter: blur(6px);
    animation: idmFlutua 7s ease-in-out infinite;
}
.idm-flag:nth-child(1) { top: 0;    left: 50%; margin-left: -1.5rem; animation-delay: 0s; }
.idm-flag:nth-child(2) { top: 5rem; right: 0; animation-delay: .8s; }
.idm-flag:nth-child(3) { bottom: 5rem; right: 0; animation-delay: 1.6s; }
.idm-flag:nth-child(4) { bottom: 0; left: 50%; margin-left: -1.5rem; animation-delay: 2.4s; }
.idm-flag:nth-child(5) { bottom: 5rem; left: 0; animation-delay: 3.2s; }
.idm-flag:nth-child(6) { top: 5rem; left: 0; animation-delay: 4s; }

@keyframes idmFlutua {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-10px); }
}

/* o cartao da palavra — replica do motor de estudo */
.idm-aula {
    position: relative;
    z-index: 2;
    border-radius: 1.5rem;
    padding: 1.5rem 1.375rem 1.625rem;
    text-align: center;
    background: linear-gradient(165deg, #1b1e42, #131634 60%, #0f1230);
    border: 1px solid rgba(255, 255, 255, .1);
    box-shadow: 0 40px 80px -30px rgba(0, 0, 0, .95), 0 0 0 1px rgba(108, 99, 255, .18), inset 0 1px 0 rgba(255, 255, 255, .07);
}
.idm-aula__topo {
    display: flex;
    align-items: center;
    gap: .625rem;
    margin-bottom: 1.25rem;
}
.idm-aula__barra {
    flex: 1;
    height: 5px;
    border-radius: 4px;
    background: rgba(255, 255, 255, .1);
    overflow: hidden;
}
.idm-aula__barra i {
    display: block;
    height: 100%;
    width: 62%;
    border-radius: 4px;
    background: linear-gradient(90deg, var(--idm-violet), var(--idm-cyan));
    animation: idmEnche 4.5s cubic-bezier(.16, 1, .3, 1) infinite;
}
@keyframes idmEnche {
    0%   { width: 18%; }
    55%  { width: 62%; }
    100% { width: 62%; }
}
.idm-aula__streak {
    font-size: .75rem;
    font-weight: 700;
    color: var(--idm-amber);
    white-space: nowrap;
}
.idm-aula__emoji {
    font-size: 3.75rem;
    line-height: 1.1;
    filter: drop-shadow(0 8px 20px rgba(0, 0, 0, .55));
}
.idm-aula__tipo {
    display: inline-block;
    margin-top: .5rem;
    font-size: .625rem;
    font-weight: 700;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, .55);
}
.idm-aula__palavra {
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: -.02em;
    color: #fff;
    margin: .125rem 0 .25rem;
}
.idm-aula__fon {
    font-size: .9375rem;
    font-style: italic;
    color: rgba(255, 255, 255, .58);
}
.idm-aula__ouvir {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    margin-top: 1.125rem;
    padding: .5rem 1.125rem;
    border-radius: 999px;
    font-size: .875rem;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, var(--idm-violet), var(--idm-cyan));
    box-shadow: 0 10px 26px -10px rgba(0, 212, 255, .9);
}
.idm-onda { display: inline-flex; align-items: center; gap: 2px; height: .875rem; }
.idm-onda span {
    display: block;
    width: 2px;
    height: 100%;
    border-radius: 2px;
    background: rgba(255, 255, 255, .95);
    transform-origin: center;
    animation: idmOnda .9s ease-in-out infinite;
}
.idm-onda span:nth-child(2) { animation-delay: .12s; }
.idm-onda span:nth-child(3) { animation-delay: .24s; }
.idm-onda span:nth-child(4) { animation-delay: .36s; }
@keyframes idmOnda {
    0%, 100% { transform: scaleY(.35); }
    50%      { transform: scaleY(1); }
}
.idm-aula__trad {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    margin-top: 1.125rem;
    padding: .75rem;
    border-radius: .875rem;
    border: 1px dashed rgba(255, 255, 255, .16);
    font-size: .875rem;
    color: rgba(255, 255, 255, .62);
}
.idm-aula__trad b { color: rgba(255, 255, 255, .9); filter: blur(4px); }

/* fichinhas flutuantes de recompensa */
.idm-chip {
    position: absolute;
    z-index: 3;
    display: inline-flex;
    align-items: center;
    gap: .375rem;
    padding: .375rem .75rem;
    border-radius: 999px;
    font-size: .75rem;
    font-weight: 700;
    color: #0a0c22;
    box-shadow: 0 14px 30px -12px rgba(0, 0, 0, .85);
    animation: idmFlutua 6s ease-in-out infinite;
}
.idm-chip--xp {
    top: 1.5rem;
    right: -.75rem;
    background: linear-gradient(135deg, var(--idm-amber), #f7b500);
    animation-delay: 1.2s;
}
.idm-chip--memoria {
    bottom: 1.75rem;
    left: -1.25rem;
    background: linear-gradient(135deg, #7ff0e8, var(--idm-mint));
    animation-delay: 2.6s;
}

/* ================================================================= */
/* DEMO — o motor de estudo de verdade dentro da landing             */
/* ================================================================= */
.idm-demo-caixa {
    max-width: 34rem;
    margin: 0 auto;
    position: relative;
}
.idm-demo-caixa::before { /* halo por tras do aparelho */
    content: "";
    position: absolute;
    inset: -3rem -2rem;
    border-radius: 50%;
    background: radial-gradient(closest-side, rgba(108, 99, 255, .22), transparent 70%);
    filter: blur(20px);
    pointer-events: none;
}
.idiomas-landing-motor.idiomas-motor {
    position: relative;
    min-height: 0;
    max-width: 34rem;
    margin: 0 auto;
    padding: 0;
    background: var(--card);
    border-radius: 1.5rem;
    border: 1px solid rgba(255, 255, 255, .1);
    box-shadow: 0 40px 80px -30px rgba(108, 99, 255, .55);
    overflow: hidden;
}
.idiomas-landing-motor .content-area { padding: 1.5rem 1.25rem 1.75rem; }
.idiomas-landing-motor .screen { display: block; }

.idm-demo-dica {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: .5rem;
    margin: 0 auto 1.75rem;
}
.idm-demo-dica span {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    padding: .4rem .8rem;
    border-radius: 999px;
    font-size: .8125rem;
    font-weight: 600;
    color: var(--text);
    border: 1px solid var(--border);
}
.idm-demo-dica span::before {
    content: "";
    width: .5rem;
    height: .5rem;
    border-radius: 999px;
    background: var(--c, var(--idm-violet));
}
.idm-credito {
    margin-top: 1rem;
    text-align: center;
    font-size: .75rem;
    color: var(--muted);
}

/* ================================================================= */
/* CARTOES — por que funciona                                        */
/* ================================================================= */
.idm-cards {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.25rem;
}
.idm-card {
    position: relative;
    padding: 1.75rem;
    border-radius: 1.25rem;
    border: 1px solid var(--border);
    overflow: hidden;
    transition: transform .3s cubic-bezier(.16, 1, .3, 1), box-shadow .3s ease, border-color .3s ease;
}
.idm-card::before {
    content: "";
    position: absolute;
    top: -1px; left: 1.5rem; right: 1.5rem;
    height: 2px;
    border-radius: 2px;
    background: var(--c, var(--idm-violet));
    opacity: 0;
    transition: opacity .3s ease;
}
.idm-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: color-mix(in srgb, var(--c, var(--idm-violet)) 40%, var(--border));
}
.idm-card:hover::before { opacity: 1; }
.idm-card__ic {
    width: 3rem;
    height: 3rem;
    border-radius: .875rem;
    display: grid;
    place-items: center;
    margin-bottom: 1.125rem;
    color: var(--c, var(--idm-violet));
    background: color-mix(in srgb, var(--c, var(--idm-violet)) 14%, transparent);
    border: 1px solid color-mix(in srgb, var(--c, var(--idm-violet)) 28%, transparent);
}
.idm-card__ic svg { width: 1.5rem; height: 1.5rem; }
.idm-card h3 { font-size: 1.125rem; font-weight: 700; color: var(--text); margin: 0 0 .5rem; }
.idm-card p { font-size: .9375rem; line-height: 1.65; color: var(--muted); margin: 0; }

/* ================================================================= */
/* PASSOS — como funciona                                            */
/* ================================================================= */
.idm-passos {
    position: relative;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.5rem;
    text-align: center;
}
.idm-passos::before { /* a linha que liga os passos */
    content: "";
    position: absolute;
    top: 1.75rem;
    left: 12%;
    right: 12%;
    height: 2px;
    background: linear-gradient(90deg, var(--idm-violet), var(--idm-cyan), var(--idm-mint), var(--idm-amber));
    opacity: .35;
}
.idm-passo__n {
    position: relative;
    z-index: 1;
    width: 3.5rem;
    height: 3.5rem;
    margin: 0 auto 1.25rem;
    border-radius: 999px;
    display: grid;
    place-items: center;
    font-size: 1.125rem;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(140deg, var(--c, var(--idm-violet)), color-mix(in srgb, var(--c, var(--idm-violet)) 60%, #000));
    box-shadow: 0 0 0 6px var(--surface), 0 12px 24px -10px color-mix(in srgb, var(--c, var(--idm-violet)) 80%, transparent);
}
.idm-passo h3 { font-size: 1.0625rem; font-weight: 700; color: var(--text); margin: 0 0 .5rem; }
.idm-passo p { font-size: .9375rem; line-height: 1.6; color: var(--muted); margin: 0; }

/* ================================================================= */
/* NUMEROS                                                           */
/* ================================================================= */
.idm-numeros {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
}
.idm-numero {
    padding: 1.75rem 1.25rem;
    border-radius: 1.25rem;
    border: 1px solid var(--border);
    text-align: center;
}
.idm-numero b {
    display: block;
    font-size: clamp(1.75rem, 1.2rem + 1.6vw, 2.5rem);
    font-weight: 700;
    letter-spacing: -.03em;
    line-height: 1.05;
    color: var(--c, var(--text));
}
.idm-numero span {
    display: block;
    margin-top: .375rem;
    font-size: .875rem;
    color: var(--muted);
}

/* ================================================================= */
/* PLANO + IDIOMAS A VENDA                                           */
/* ================================================================= */
.idm-oferta {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
    max-width: 52rem;
    margin: 0 auto 3rem;
}
.idm-plano {
    position: relative;
    padding: 1.75rem;
    border-radius: 1.25rem;
    border: 1px solid var(--border);
}
.idm-plano--destaque {
    border-color: color-mix(in srgb, var(--idm-violet) 45%, var(--border));
    box-shadow: 0 24px 50px -30px rgba(108, 99, 255, .8);
}
.idm-plano__selo {
    display: inline-block;
    font-size: .6875rem;
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;
    padding: .25rem .6rem;
    border-radius: 999px;
    margin-bottom: .875rem;
    color: var(--c, var(--idm-violet));
    background: color-mix(in srgb, var(--c, var(--idm-violet)) 14%, transparent);
    border: 1px solid color-mix(in srgb, var(--c, var(--idm-violet)) 30%, transparent);
}
.idm-plano h3 { font-size: 1.25rem; font-weight: 700; color: var(--text); margin: 0 0 .375rem; }
.idm-plano__preco {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -.03em;
    color: var(--text);
    margin: .5rem 0 .25rem;
}
.idm-plano__preco small { font-size: .9375rem; font-weight: 500; color: var(--muted); }
.idm-plano__nota { font-size: .875rem; line-height: 1.6; color: var(--muted); margin: 0 0 1.25rem; }
.idm-plano ul { list-style: none; margin: 0 0 1.5rem; padding: 0; display: flex; flex-direction: column; gap: .5rem; }
.idm-plano li {
    display: flex;
    align-items: flex-start;
    gap: .5rem;
    font-size: .9375rem;
    line-height: 1.5;
    color: var(--text);
}
.idm-plano li svg { width: 1.125rem; height: 1.125rem; flex-shrink: 0; margin-top: .125rem; color: var(--c, var(--idm-violet)); }
.idm-plano .idm-btn { width: 100%; }

.idm-idiomas {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 1rem;
}
.idm-idioma {
    display: block;
    padding: 1.5rem 1rem;
    border-radius: 1.125rem;
    border: 1px solid var(--border);
    text-align: center;
    text-decoration: none;
    transition: transform .25s cubic-bezier(.16, 1, .3, 1), box-shadow .25s ease, border-color .25s ease;
}
.idm-idioma:hover {
    transform: translateY(-4px);
    border-color: color-mix(in srgb, var(--idm-violet) 45%, var(--border));
    box-shadow: var(--shadow-lg);
}
.idm-idioma__bandeira { font-size: 2.25rem; line-height: 1.2; }
.idm-idioma__nome { display: block; margin-top: .5rem; font-size: 1rem; font-weight: 700; color: var(--text); }
.idm-idioma__meta { display: block; margin-top: .25rem; font-size: .8125rem; color: var(--muted); }
.idm-idioma__preco {
    display: inline-block;
    margin-top: .875rem;
    font-size: .875rem;
    font-weight: 700;
    color: var(--idm-violet);
}
[data-theme="dark"] .idm-idioma__preco { color: var(--idm-violet-soft); }

/* ================================================================= */
/* FAQ                                                               */
/* ================================================================= */
.idm-faq { max-width: 44rem; margin: 0 auto; display: flex; flex-direction: column; gap: .75rem; }
.idm-faq details {
    border-radius: 1rem;
    border: 1px solid var(--border);
    overflow: hidden;
}
.idm-faq summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.125rem 1.25rem;
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    color: var(--text);
    list-style: none;
}
.idm-faq summary::-webkit-details-marker { display: none; }
.idm-faq summary:hover { color: var(--idm-violet); }
.idm-faq__mais {
    position: relative;
    width: 1.5rem;
    height: 1.5rem;
    flex-shrink: 0;
    border-radius: 999px;
    background: color-mix(in srgb, var(--idm-violet) 12%, transparent);
}
.idm-faq__mais::before,
.idm-faq__mais::after {
    content: "";
    position: absolute;
    left: 50%; top: 50%;
    width: .625rem;
    height: 2px;
    border-radius: 2px;
    background: var(--idm-violet);
    transform: translate(-50%, -50%);
    transition: opacity .25s ease, transform .25s ease;
}
.idm-faq__mais::after { transform: translate(-50%, -50%) rotate(90deg); }
/* aberto: o traco vertical gira ate sumir no horizontal — vira um "−" */
.idm-faq details[open] .idm-faq__mais::after {
    opacity: 0;
    transform: translate(-50%, -50%) rotate(0deg);
}
.idm-faq__resp {
    padding: 0 1.25rem 1.25rem;
    font-size: .9375rem;
    line-height: 1.7;
    color: var(--muted);
    animation: idmAbre .28s ease-out;
}
@keyframes idmAbre {
    from { opacity: 0; transform: translateY(-6px); }
    to   { opacity: 1; transform: none; }
}

/* ================================================================= */
/* CTA FINAL (faixa escura)                                          */
/* ================================================================= */
.idm-cta {
    position: relative;
    isolation: isolate;
    overflow: hidden;
    color: #fff;
    padding: 4.5rem 0;
    text-align: center;
    background:
        radial-gradient(42rem 28rem at 20% 0%, rgba(0, 212, 255, .26), transparent 62%),
        radial-gradient(40rem 26rem at 82% 100%, rgba(255, 107, 157, .2), transparent 62%),
        linear-gradient(150deg, var(--idm-ink-2), var(--idm-ink) 60%, #03040c);
}
.idm-cta::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: var(--idm-grain);
    opacity: .24;
    mix-blend-mode: overlay;
    pointer-events: none;
    z-index: -1;
}
.idm-cta h2 {
    font-size: clamp(1.75rem, 1.1rem + 2.6vw, 2.75rem);
    line-height: 1.12;
    letter-spacing: -.025em;
    font-weight: 700;
    margin: 0 0 1rem;
    color: #fff;
    text-wrap: balance;
}
.idm-cta p {
    font-size: clamp(1rem, .95rem + .35vw, 1.1875rem);
    line-height: 1.65;
    color: rgba(255, 255, 255, .78);
    max-width: 38rem;
    margin: 0 auto 2rem;
    text-wrap: pretty;
}
.idm-cta__acoes { display: flex; flex-wrap: wrap; gap: .875rem; justify-content: center; align-items: center; }

/* ================================================================= */
/* CTA GRUDADO NO MOBILE                                             */
/* ================================================================= */
.idm-sticky {
    position: fixed;
    left: 0; right: 0; bottom: 0;
    z-index: 40;
    padding: .75rem 1rem calc(.75rem + env(safe-area-inset-bottom));
    background: color-mix(in srgb, var(--surface) 92%, transparent);
    border-top: 1px solid var(--border);
    backdrop-filter: blur(12px);
    transform: translateY(110%);
    transition: transform .3s cubic-bezier(.16, 1, .3, 1);
    display: none;
}
.idm-sticky.is-in { transform: none; }
.idm-sticky .idm-btn { width: 100%; padding: .875rem 1.25rem; font-size: 1rem; min-height: 3rem; }

/* ================================================================= */
/* RESPONSIVO                                                        */
/* ================================================================= */
/* A viewport engana: o menu lateral come ~382px. Abaixo de ~1340px de tela a
   coluna do hero fica com menos de 500px e o H1 quebra em 4 linhas — entao o
   hero vira uma coluna so (texto centralizado, palco embaixo). */
@media (max-width: 1339px) {
    .idm-hero__grid {
        grid-template-columns: minmax(0, 1fr);
        gap: 3rem;
        justify-items: center;
        text-align: center;
    }
    .idm-hero__sub { margin-left: auto; margin-right: auto; }
    .idm-hero__acoes,
    .idm-pills { justify-content: center; }
}
@media (max-width: 1100px) {
    .idm-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .idm-idiomas { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 900px) {
    .idm-passos { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2.5rem 1.25rem; }
    .idm-passos::before { display: none; }
    .idm-numeros { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .idm-oferta { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 640px) {
    .idm-sec { padding: 3.5rem 0; }
    .idm-hero { padding: 3rem 0 3.5rem; }
    .idm-cta { padding: 3.5rem 0; }
    .idm-cards { grid-template-columns: minmax(0, 1fr); }
    .idm-idiomas { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .idm-btn { font-size: .9375rem; padding: .9375rem 1.25rem; }
    .idm-hero__acoes { flex-direction: column; align-items: stretch; }
    .idm-hero__acoes .idm-btn { width: 100%; }
    .idm-cta__acoes .idm-btn { width: 100%; }
    /* o palco mantem a composicao e so encolhe junto (nao se reposiciona) */
    .idm-palco { width: 21rem; padding: 2.5rem 2.75rem; }
    .idm-flag { width: 2.5rem; height: 2.5rem; font-size: 1.25rem; }
    .idm-flag:nth-child(1), .idm-flag:nth-child(4) { margin-left: -1.25rem; }
    .idm-flag:nth-child(2), .idm-flag:nth-child(3),
    .idm-flag:nth-child(5), .idm-flag:nth-child(6) { top: auto; bottom: auto; }
    .idm-flag:nth-child(2), .idm-flag:nth-child(6) { top: 4rem; }
    .idm-flag:nth-child(3), .idm-flag:nth-child(5) { bottom: 4rem; }
    .idm-chip--xp { right: -.25rem; }
    .idm-chip--memoria { left: -.25rem; }
    .idm-aula__palavra { font-size: 1.875rem; }
    .idm-sticky { display: block; }
}

/* ================================================================= */
/* MOVIMENTO REDUZIDO — o estado final continua legivel              */
/* ================================================================= */
@media (prefers-reduced-motion: reduce) {
    .idm-flag,
    .idm-chip,
    .idm-onda span { animation: none; }
    .idm-aula__barra i { animation: none; width: 62%; }
    .idm-onda span { transform: scaleY(.7); }
    .idm-js .idm-rv { opacity: 1; transform: none; transition: none; }
    .idm-faq__resp { animation: none; }
    .idm-btn:hover,
    .idm-card:hover,
    .idm-idioma:hover { transform: none; }
}