/* =============================================
   POOLTECH — DESIGN SYSTEM
   Fonte: Syne (display) + DM Sans (corpo)
   Paleta: Azul profundo + ciano neon + branco gelo
   ============================================= */

:root {
    --ocean-deep: #020c1b;
    --ocean-mid:  #0a1f3c;
    --ocean-card: #0d2647;
    --ocean-border: rgba(255,255,255,0.08);
    --cyan:       #00e5ff;
    --cyan-dim:   rgba(0,229,255,0.15);
    --cyan-glow:  rgba(0,229,255,0.35);
    --white:      #f0f8ff;
    --white-dim:  rgba(240,248,255,0.6);
    --white-faint:rgba(240,248,255,0.1);
    --green:      #00d084;
    --amber:      #ffb300;
    --red:        #ff4d6d;
    --purple:     #a855f7;
    --radius-lg:  20px;
    --radius-md:  12px;
    --radius-sm:  8px;
    --shadow:     0 8px 32px rgba(0,0,0,0.4);
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background: var(--ocean-deep);
    color: var(--white);
    font-family: 'DM Sans', sans-serif;
    font-size: 15px;
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* =============================================
   APP SHELL
   ============================================= */
.app-shell {
    max-width: 480px;
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

@media (min-width: 768px) {
    .app-shell { max-width: 720px; }
    .hero-title { font-size: 3rem; }
    .main-content { padding: 0 32px 60px; }
    .steps-nav { padding: 0 32px 24px; }
    .input-duo { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 1024px) {
    body { overflow-x: hidden; }

    .app-shell {
        max-width: 100%;
        display: grid;
        grid-template-columns: 380px 1fr;
        grid-template-rows: auto 1fr;
        grid-template-areas:
            "topbar topbar"
            "hero   rightcol";
        min-height: 100vh;
    }

    .top-bar {
        grid-area: topbar;
        max-width: 100%;
    }

    .hero {
        grid-area: hero;
        position: sticky;
        top: 65px;
        height: calc(100vh - 65px);
        display: flex;
        flex-direction: column;
        justify-content: center;
        border-right: 1px solid var(--ocean-border);
        padding: 60px 48px;
        overflow: hidden;
    }

    .hero-title { font-size: 3.2rem; }
    .hero-sub { max-width: 300px; }
    .hero-deco { right: -30px; top: 20px; }

    .steps-nav {
        padding: 32px 48px 20px;
    }

    .main-content {
        padding: 0 48px 60px;
    }

    /* Coluna direita com scroll próprio */
    .right-col {
        grid-area: rightcol;
        overflow-y: auto;
        height: calc(100vh - 65px);
        position: sticky;
        top: 65px;
    }

    /* Layout mais largo para produtos no desktop */
    .produtos-lista { gap: 8px; }
    .produto-item { padding: 12px 16px; }

    /* Resultado volume em destaque maior */
    .vol-valor { font-size: 2rem; }

    /* Histórico panel mais largo no desktop */
    .historico-panel { width: 420px; }
}

/* =============================================
   TOP BAR
   ============================================= */
.top-bar {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    background: rgba(2, 12, 27, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--ocean-border);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    font-size: 1.2rem;
    letter-spacing: -0.02em;
}

.logo-icon {
    color: var(--cyan);
    font-size: 1.4rem;
    line-height: 1;
    animation: pulse-icon 3s ease-in-out infinite;
}

@keyframes pulse-icon {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(0.95); }
}

.btn-historico-topo {
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--white-faint);
    border: 1px solid var(--ocean-border);
    color: var(--white-dim);
    padding: 8px 14px;
    border-radius: 30px;
    font-size: 0.82rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}
.btn-historico-topo:hover {
    background: var(--cyan-dim);
    border-color: var(--cyan);
    color: var(--cyan);
}

/* =============================================
   HERO
   ============================================= */
.hero {
    position: relative;
    padding: 48px 24px 40px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 80% 0%, rgba(0,229,255,0.12) 0%, transparent 60%),
                radial-gradient(ellipse at 20% 100%, rgba(10,31,60,0.8) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content { position: relative; z-index: 2; }

.hero-tag {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--cyan);
    margin-bottom: 12px;
}

.hero-title {
    font-family: 'Syne', sans-serif;
    font-size: 2.6rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: var(--white);
    margin-bottom: 12px;
}

.hero-title em {
    font-style: normal;
    color: var(--cyan);
}

.hero-sub {
    color: var(--white-dim);
    font-size: 0.95rem;
    max-width: 280px;
}

.hero-deco {
    position: absolute;
    right: -20px;
    top: 10px;
    z-index: 1;
}

.deco-ring {
    position: absolute;
    border-radius: 50%;
    border: 1px solid;
    opacity: 0.15;
}
.r1 { width: 180px; height: 180px; border-color: var(--cyan); top: 0; right: 0; animation: spin 20s linear infinite; }
.r2 { width: 130px; height: 130px; border-color: var(--cyan); top: 25px; right: 25px; animation: spin 15s linear infinite reverse; }
.r3 { width: 80px; height: 80px; border-color: var(--cyan); top: 50px; right: 50px; opacity: 0.3; }

@keyframes spin {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}

/* =============================================
   STEPS NAV
   ============================================= */
.steps-nav {
    display: flex;
    align-items: center;
    padding: 0 20px 24px;
    gap: 0;
}

.step-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    transition: var(--transition);
    flex: none;
}

.step-num {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Syne', sans-serif;
    font-size: 0.75rem;
    font-weight: 700;
    border: 1.5px solid rgba(255,255,255,0.2);
    color: var(--white-dim);
    transition: var(--transition);
}

.step-label {
    font-size: 0.65rem;
    font-weight: 500;
    color: var(--white-dim);
    transition: var(--transition);
    white-space: nowrap;
}

.step-btn.active .step-num {
    background: var(--cyan);
    border-color: var(--cyan);
    color: var(--ocean-deep);
    box-shadow: 0 0 16px var(--cyan-glow);
}

.step-btn.active .step-label { color: var(--cyan); }

.step-btn.done .step-num {
    background: rgba(0,208,132,0.2);
    border-color: var(--green);
    color: var(--green);
}
.step-btn.done .step-label { color: var(--green); }

.step-line {
    flex: 1;
    height: 1px;
    background: rgba(255,255,255,0.1);
    margin: 0 4px;
    margin-bottom: 20px;
}

/* =============================================
   MAIN CONTENT
   ============================================= */
.main-content { padding: 0 20px 40px; flex: 1; }

/* =============================================
   PASSO (SEÇÃO)
   ============================================= */
.passo {
    animation: fadeSlideIn 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.passo-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 28px;
}

.passo-numero {
    font-family: 'Syne', sans-serif;
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--cyan);
    opacity: 0.25;
    line-height: 1;
    flex-shrink: 0;
}

.passo-titulo {
    font-family: 'Syne', sans-serif;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--white);
    line-height: 1.2;
}

.passo-desc {
    font-size: 0.85rem;
    color: var(--white-dim);
    margin-top: 2px;
}

/* =============================================
   FORMATO TABS
   ============================================= */
.formato-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
    background: var(--ocean-mid);
    padding: 6px;
    border-radius: var(--radius-md);
    border: 1px solid var(--ocean-border);
}

.fmt-btn {
    flex: 1 1 auto;
    background: none;
    border: none;
    color: var(--white-dim);
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.fmt-btn:hover { color: var(--white); background: var(--white-faint); }

.fmt-btn.active {
    background: var(--cyan);
    color: var(--ocean-deep);
    font-weight: 700;
}

/* =============================================
   INPUTS
   ============================================= */
.input-duo {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 8px;
}

.input-group-titled {
    background: var(--ocean-mid);
    border: 1px solid var(--ocean-border);
    border-radius: var(--radius-md);
    padding: 16px;
}

.grupo-title {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--cyan);
    margin-bottom: 12px;
    letter-spacing: 0.02em;
}

.input-field {
    margin-bottom: 14px;
}

.input-field:last-child { margin-bottom: 0; }

label {
    display: block;
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--white-dim);
    margin-bottom: 6px;
    letter-spacing: 0.02em;
}

.input-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.input-wrap input,
.select-custom {
    width: 100%;
    background: var(--ocean-card);
    border: 1px solid var(--ocean-border);
    border-radius: var(--radius-sm);
    color: var(--white);
    font-family: 'DM Sans', sans-serif;
    font-size: 1rem;
    padding: 12px 44px 12px 14px;
    outline: none;
    transition: var(--transition);
    -webkit-appearance: none;
}

.select-custom {
    padding: 12px 14px;
    cursor: pointer;
}

.input-wrap input:focus,
.select-custom:focus {
    border-color: var(--cyan);
    box-shadow: 0 0 0 3px var(--cyan-dim);
    background: rgba(13, 38, 71, 0.9);
}

.unit {
    position: absolute;
    right: 14px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--cyan);
    pointer-events: none;
}

.input-hint {
    display: block;
    font-size: 0.75rem;
    color: var(--white-dim);
    margin-top: 6px;
    opacity: 0.7;
}

input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button { -webkit-appearance: none; }

/* =============================================
   BOTÕES
   ============================================= */
.acoes-passo {
    display: flex;
    gap: 10px;
    margin: 24px 0 0;
}

.btn-acao {
    flex: 1;
    padding: 16px;
    border: none;
    border-radius: var(--radius-md);
    font-family: 'Syne', sans-serif;
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: white;
}

.btn-primary {
    background: linear-gradient(135deg, #0f52ba, #1e88e5);
    box-shadow: 0 4px 20px rgba(15, 82, 186, 0.3);
}
.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 28px rgba(15, 82, 186, 0.45);
}
.btn-primary:active { transform: translateY(0); }

.btn-ghost {
    background: var(--white-faint);
    border: 1px solid var(--ocean-border);
    color: var(--white-dim);
    flex: 0 0 auto;
    padding: 16px 20px;
    font-family: 'DM Sans', sans-serif;
    font-size: 0.88rem;
}
.btn-ghost:hover { background: rgba(255,255,255,0.12); color: var(--white); }

.btn-proximo {
    width: 100%;
    margin-top: 16px;
    padding: 14px;
    background: var(--white-faint);
    border: 1px solid var(--ocean-border);
    border-radius: var(--radius-md);
    color: var(--cyan);
    font-family: 'Syne', sans-serif;
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    letter-spacing: 0.02em;
}
.btn-proximo:hover {
    background: var(--cyan-dim);
    border-color: var(--cyan);
}

.btn-voltar {
    display: block;
    margin-top: 20px;
    background: none;
    border: none;
    color: var(--white-dim);
    font-size: 0.85rem;
    cursor: pointer;
    padding: 8px 0;
    transition: var(--transition);
}
.btn-voltar:hover { color: var(--white); }

/* =============================================
   RESULTADO CARDS
   ============================================= */
.resultado-card {
    margin-top: 20px;
    background: var(--ocean-mid);
    border: 1px solid var(--ocean-border);
    border-radius: var(--radius-lg);
    padding: 20px;
    animation: fadeSlideIn 0.3s ease;
}

.resultado-volume-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 4px;
}

.vol-item {
    background: var(--ocean-card);
    border: 1px solid var(--ocean-border);
    border-radius: var(--radius-md);
    padding: 16px;
    text-align: center;
}

.vol-item.destaque {
    border-color: var(--cyan);
    background: var(--cyan-dim);
}

.vol-valor {
    display: block;
    font-family: 'Syne', sans-serif;
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--white);
    line-height: 1.1;
}

.vol-item.destaque .vol-valor { color: var(--cyan); }

.vol-label {
    display: block;
    font-size: 0.75rem;
    color: var(--white-dim);
    margin-top: 4px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* =============================================
   PRODUTOS LISTA
   ============================================= */
.produtos-lista {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 4px;
}

.produto-item {
    background: var(--ocean-mid);
    border: 1px solid var(--ocean-border);
    border-radius: var(--radius-md);
    padding: 14px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: var(--transition);
}

.produto-item:hover { border-color: rgba(255,255,255,0.15); }

.produto-info {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    min-width: 0;
}

.p-icon { font-size: 1.3rem; flex-shrink: 0; }

.produto-info strong {
    display: block;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--white);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.produto-info small {
    display: block;
    font-size: 0.72rem;
    color: var(--white-dim);
}

.input-wrap.compact {
    width: 110px;
    flex-shrink: 0;
}

.input-wrap.compact input {
    padding: 10px 38px 10px 10px;
    font-size: 0.9rem;
    text-align: right;
}

.resultado-inline {
    background: rgba(0,208,132,0.12);
    border: 1px solid rgba(0,208,132,0.3);
    border-radius: var(--radius-sm);
    padding: 6px 10px;
    font-family: 'Syne', sans-serif;
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--green);
    white-space: nowrap;
    flex-shrink: 0;
    animation: fadeSlideIn 0.2s ease;
}

.resultado-inline em { font-style: normal; font-size: 0.72rem; opacity: 0.8; }

/* =============================================
   INFO BOX
   ============================================= */
.info-box {
    background: rgba(0,229,255,0.07);
    border: 1px solid rgba(0,229,255,0.2);
    border-radius: var(--radius-md);
    padding: 14px 16px;
    font-size: 0.85rem;
    color: var(--white-dim);
    line-height: 1.5;
    margin-bottom: 20px;
}

/* =============================================
   SALVAR HISTÓRICO
   ============================================= */
.salvar-box {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--ocean-border);
}

.salvar-titulo {
    font-family: 'Syne', sans-serif;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 14px;
}

.btn-salvar {
    background: linear-gradient(135deg, #059669, #00d084) !important;
    box-shadow: 0 4px 20px rgba(0,208,132,0.25) !important;
}
.btn-salvar:hover {
    box-shadow: 0 8px 28px rgba(0,208,132,0.4) !important;
}

/* =============================================
   DIAGNÓSTICO SAL
   ============================================= */
#textoDiagnostico {
    font-size: 0.92rem;
    line-height: 1.65;
    color: var(--white-dim);
}

#textoDiagnostico strong { color: var(--white); }

/* =============================================
   HISTÓRICO PANEL
   ============================================= */
.historico-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
    z-index: 200;
}

.historico-panel {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(400px, 100vw);
    background: var(--ocean-mid);
    border-left: 1px solid var(--ocean-border);
    z-index: 201;
    display: flex;
    flex-direction: column;
    animation: slideInRight 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    overflow: hidden;
}

@keyframes slideInRight {
    from { transform: translateX(100%); }
    to   { transform: translateX(0); }
}

.historico-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--ocean-border);
}

.historico-header h2 {
    font-family: 'Syne', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--white);
}

.btn-fechar {
    background: var(--white-faint);
    border: none;
    color: var(--white-dim);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
}
.btn-fechar:hover { background: var(--red); color: white; }

.historico-lista {
    flex: 1;
    overflow-y: auto;
    padding: 20px 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.historico-vazio {
    color: var(--white-dim);
    font-size: 0.9rem;
    text-align: center;
    padding: 40px 0;
    opacity: 0.6;
}

.historico-item {
    background: var(--ocean-card);
    border: 1px solid var(--ocean-border);
    border-radius: var(--radius-md);
    padding: 16px;
    animation: fadeSlideIn 0.2s ease;
}

.hist-data {
    font-size: 0.72rem;
    color: var(--cyan);
    font-weight: 600;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
    text-transform: uppercase;
}

.hist-linha {
    font-size: 0.85rem;
    color: var(--white-dim);
    margin-bottom: 3px;
    line-height: 1.4;
}

.hist-linha strong { color: var(--white); }

.hist-obs {
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--ocean-border);
    font-size: 0.8rem;
    color: var(--amber);
    font-style: italic;
}

.btn-limpar-hist {
    margin: 16px 24px 24px;
    padding: 12px;
    background: rgba(255,77,109,0.1);
    border: 1px solid rgba(255,77,109,0.3);
    border-radius: var(--radius-md);
    color: var(--red);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    width: calc(100% - 48px);
}
.btn-limpar-hist:hover { background: rgba(255,77,109,0.2); }

/* =============================================
   UTILITIES
   ============================================= */
.hidden { display: none !important; }

/* =============================================
   SCROLLBAR
   ============================================= */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--ocean-border); border-radius: 4px; }

/* =============================================
   HISTÓRICO — CARDS RICOS
   ============================================= */
.hist-mes-label {
    font-family: 'Syne', sans-serif;
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--cyan);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 4px 0 8px;
    opacity: 0.7;
}

.historico-item {
    background: var(--ocean-card);
    border: 1px solid var(--ocean-border);
    border-left: 3px solid var(--cyan);
    border-radius: var(--radius-md);
    padding: 16px;
    animation: fadeSlideIn 0.2s ease;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.hist-topo {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 8px;
    flex-wrap: wrap;
}

.hist-data {
    font-size: 0.75rem;
    color: var(--white-dim);
    font-weight: 500;
}

.hist-status-badge {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    white-space: nowrap;
}

.hist-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(90px, 1fr));
    gap: 8px;
}

.hist-bloco {
    background: rgba(255,255,255,0.04);
    border-radius: var(--radius-sm);
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.hist-bloco-label {
    font-size: 0.68rem;
    color: var(--white-dim);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.hist-bloco-valor {
    font-family: 'Syne', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    color: var(--white);
    line-height: 1.2;
}

.hist-bloco-sub {
    font-size: 0.7rem;
    color: var(--white-dim);
    opacity: 0.7;
}

.hist-produtos {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.hist-tag {
    background: rgba(0,229,255,0.08);
    border: 1px solid rgba(0,229,255,0.15);
    border-radius: 20px;
    padding: 4px 10px;
    font-size: 0.72rem;
    color: var(--white-dim);
}

.hist-tag strong {
    color: var(--cyan);
}

.hist-obs {
    font-size: 0.8rem;
    color: var(--amber);
    font-style: italic;
    padding-top: 6px;
    border-top: 1px solid var(--ocean-border);
}

.hist-btn-apagar {
    align-self: flex-end;
    background: none;
    border: none;
    color: rgba(255,77,109,0.4);
    font-size: 0.72rem;
    cursor: pointer;
    padding: 2px 0;
    transition: var(--transition);
    width: auto;
}
.hist-btn-apagar:hover { color: var(--red); }

/* SVG ícones de piscina nos botões de formato */
.fmt-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 10px 8px;
}

.pool-icon {
    width: 36px;
    height: 24px;
    color: currentColor;
    transition: var(--transition);
}

.fmt-btn.active .pool-icon { color: var(--ocean-deep); }

/* =============================================
   SELETOR DE IDIOMA
   ============================================= */
.top-bar-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

.lang-selector {
    display: flex;
    background: var(--white-faint);
    border: 1px solid var(--ocean-border);
    border-radius: 30px;
    padding: 3px;
    gap: 2px;
}

.lang-btn {
    background: none;
    border: none;
    color: var(--white-dim);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 5px 10px;
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition);
    width: auto;
    line-height: 1;
}

.lang-btn:hover { color: var(--white); }

.lang-btn.active {
    background: var(--cyan);
    color: var(--ocean-deep);
}

/* =============================================
   DROPDOWN DE IDIOMA
   ============================================= */
.lang-dropdown {
    position: relative;
}

.lang-ativo {
    background: var(--white-faint);
    border: 1px solid var(--ocean-border);
    color: var(--white);
    font-size: 0.82rem;
    font-weight: 600;
    padding: 7px 12px;
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition);
    width: auto;
    display: flex;
    align-items: center;
    gap: 4px;
}
.lang-ativo:hover { border-color: var(--cyan); color: var(--cyan); }

.lang-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--ocean-card);
    border: 1px solid var(--ocean-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    z-index: 200;
    min-width: 140px;
    box-shadow: var(--shadow);
    animation: fadeSlideIn 0.2s ease;
}

.lang-opcao {
    width: 100%;
    background: none;
    border: none;
    color: var(--white-dim);
    font-size: 0.85rem;
    font-weight: 500;
    padding: 12px 16px;
    text-align: left;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid var(--ocean-border);
}
.lang-opcao:last-child { border-bottom: none; }
.lang-opcao:hover { background: var(--white-faint); color: var(--white); }
.lang-opcao.ativo { color: var(--cyan); background: var(--cyan-dim); }

/* =============================================
   VOLUME DIRETO (TOGGLE)
   ============================================= */
.volume-direto-box {
    background: var(--ocean-mid);
    border: 1px solid var(--ocean-border);
    border-radius: var(--radius-md);
    padding: 14px 16px;
    margin-bottom: 20px;
}

.volume-direto-toggle {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--white-dim);
}

/* Toggle switch */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
    cursor: pointer;
}

.toggle-switch input { display: none; }

.toggle-slider {
    position: absolute;
    inset: 0;
    background: rgba(255,255,255,0.1);
    border-radius: 24px;
    transition: var(--transition);
    border: 1px solid var(--ocean-border);
}

.toggle-slider:before {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    background: var(--white-dim);
    border-radius: 50%;
    top: 2px;
    left: 2px;
    transition: var(--transition);
}

.toggle-switch input:checked + .toggle-slider {
    background: var(--cyan-dim);
    border-color: var(--cyan);
}

.toggle-switch input:checked + .toggle-slider:before {
    background: var(--cyan);
    transform: translateX(20px);
}

/* =============================================
   BTN INFO (?)
   ============================================= */
.btn-info {
    width: 20px;
    height: 20px;
    min-width: 20px;
    border-radius: 50%;
    background: rgba(0,229,255,0.1);
    border: 1px solid rgba(0,229,255,0.3);
    color: var(--cyan);
    font-size: 0.72rem;
    font-weight: 800;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    padding: 0;
    margin-left: 4px;
    flex-shrink: 0;
}
.btn-info:hover { background: var(--cyan); color: var(--ocean-deep); }

/* =============================================
   MODAL INFO PRODUTO
   ============================================= */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(4px);
    z-index: 300;
}

.modal-info {
    position: fixed;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: min(480px, 100vw);
    background: var(--ocean-mid);
    border: 1px solid var(--ocean-border);
    border-bottom: none;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    padding: 24px 24px 36px;
    z-index: 301;
    animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
    from { transform: translateX(-50%) translateY(100%); }
    to   { transform: translateX(-50%) translateY(0); }
}

.modal-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.modal-icon { font-size: 1.6rem; }

.modal-titulo {
    font-family: 'Syne', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--white);
    flex: 1;
}

.modal-texto {
    font-size: 0.92rem;
    color: var(--white-dim);
    line-height: 1.7;
}