/* ===== VARIÁVEIS DE COR ===== */
:root {
    --azul:        #4f46e5;
    --azul-escuro: #4338ca;
    --verde:       #16a34a;
    --amarelo:     #d97706;
    --cinza:       #f4f5f7;
    --cinza-borda: #e3e5ea;
    --texto:       #1f2430;
    --texto-suave: #6b7280;
    --branco:      #ffffff;
    --sombra:      0 4px 20px rgba(0,0,0,.07);
    --raio:        14px;
}

/* ===== RESET BÁSICO ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--cinza);
    color: var(--texto);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* ===== CABEÇALHO ===== */
.topo {
    background: linear-gradient(120deg, var(--azul), #7c3aed);
    color: var(--branco);
    padding: 22px 0;
    box-shadow: var(--sombra);
}
.topo-conteudo {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}
.marca { display: flex; align-items: center; gap: 14px; }
.logo { font-size: 40px; }
.marca h1 { font-size: 26px; font-weight: 800; }
.marca p { font-size: 14px; opacity: .9; }

/* ===== CONTAINER ===== */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 28px 20px 60px;
}

/* ===== BOTÕES ===== */
.btn {
    border: none;
    border-radius: 10px;
    padding: 11px 18px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: transform .1s, opacity .2s;
    font-family: inherit;
}
.btn:active { transform: scale(.97); }
.btn-primario { background: var(--branco); color: var(--azul); }
.topo .btn-primario { background: var(--branco); color: var(--azul); }
.container .btn-primario,
.modal .btn-primario { background: var(--azul); color: var(--branco); }
.btn-secundario { background: var(--cinza); color: var(--texto); }
.btn-mini {
    padding: 7px 12px;
    font-size: 13px;
    border-radius: 8px;
    background: var(--cinza);
    color: var(--texto);
    border: 1px solid var(--cinza-borda);
}

/* ===== DASHBOARD ===== */
.dashboard {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 26px;
}
.stat {
    background: var(--branco);
    border-radius: var(--raio);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 14px;
    box-shadow: var(--sombra);
}
.stat-icone { font-size: 34px; }
.stat-numero { font-size: 28px; font-weight: 800; }
.stat-rotulo { font-size: 13px; color: var(--texto-suave); }

/* ===== FERRAMENTAS (busca + filtros) ===== */
.ferramentas {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 14px;
    margin-bottom: 22px;
    flex-wrap: wrap;
}
.campo-busca {
    flex: 1 1 280px;
    padding: 12px 16px;
    border: 1px solid var(--cinza-borda);
    border-radius: 10px;
    font-size: 15px;
    font-family: inherit;
    background: var(--branco);
}
.campo-busca:focus { outline: 2px solid var(--azul); border-color: transparent; }
.filtros { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
    border: 1px solid var(--cinza-borda);
    background: var(--branco);
    color: var(--texto-suave);
    padding: 9px 15px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    font-family: inherit;
    transition: all .15s;
}
.chip.ativo { background: var(--azul); color: var(--branco); border-color: var(--azul); }

/* ===== GRADE DE LIVROS ===== */
.grade-livros {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 18px;
}

/* ===== CARD DO LIVRO ===== */
.card {
    background: var(--branco);
    border-radius: var(--raio);
    padding: 20px;
    box-shadow: var(--sombra);
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.card-topo { display: flex; justify-content: space-between; gap: 10px; }
.card-titulo { font-size: 18px; font-weight: 700; }
.card-autor { font-size: 14px; color: var(--texto-suave); }

.selo {
    font-size: 12px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 999px;
    white-space: nowrap;
    height: fit-content;
}
.selo-pretendo { background: #eef2ff; color: var(--azul); }
.selo-lendo    { background: #fef3c7; color: var(--amarelo); }
.selo-concluido{ background: #dcfce7; color: var(--verde); }

.card-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px 12px;
    font-size: 13px;
    color: var(--texto-suave);
}
.card-info b { color: var(--texto); font-weight: 600; }

/* ===== BARRA DE PROGRESSO ===== */
.progresso-topo {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 5px;
}
.barra {
    background: var(--cinza);
    border-radius: 999px;
    height: 10px;
    overflow: hidden;
}
.barra-preenchida {
    height: 100%;
    border-radius: 999px;
    transition: width .4s;
    background: var(--azul);
}
.barra-preenchida.completa { background: var(--verde); }

/* ===== AÇÕES DO CARD ===== */
.card-acoes { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 4px; }
.card-acoes .btn-mini.excluir { color: #dc2626; border-color: #fecaca; background: #fef2f2; }

/* ===== ESTADO VAZIO ===== */
.vazio {
    text-align: center;
    padding: 60px 20px;
    color: var(--texto-suave);
}
.vazio span { font-size: 54px; display: block; margin-bottom: 10px; }
.vazio p { margin-bottom: 18px; font-size: 16px; }

/* ===== MODAL ===== */
.modal-fundo {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15,18,30,.55);
    z-index: 100;
    padding: 20px;
    overflow-y: auto;
}
.modal-fundo.aberto { display: flex; align-items: flex-start; justify-content: center; }
.modal {
    background: var(--branco);
    border-radius: 18px;
    width: 100%;
    max-width: 620px;
    margin: 40px auto;
    box-shadow: 0 20px 60px rgba(0,0,0,.3);
    animation: sobe .2s ease;
}
@keyframes sobe { from { transform: translateY(20px); opacity: 0; } to { transform: none; opacity: 1; } }
.modal-topo {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--cinza-borda);
}
.modal-topo h2 { font-size: 20px; }
.btn-fechar {
    background: none;
    border: none;
    font-size: 30px;
    line-height: 1;
    cursor: pointer;
    color: var(--texto-suave);
}

/* ===== FORMULÁRIO ===== */
.form { padding: 24px; }
.linha {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}
label {
    display: flex;
    flex-direction: column;
    font-size: 14px;
    font-weight: 600;
    gap: 6px;
    color: var(--texto);
}
input, select {
    padding: 11px 13px;
    border: 1px solid var(--cinza-borda);
    border-radius: 9px;
    font-size: 15px;
    font-family: inherit;
    font-weight: 400;
    background: var(--branco);
    color: var(--texto);
}
input:focus, select:focus { outline: 2px solid var(--azul); border-color: transparent; }
.erro-form {
    color: #dc2626;
    font-size: 14px;
    min-height: 20px;
    font-weight: 500;
}
.modal-acoes {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 8px;
}

/* ===== RESPONSIVO (CELULAR) ===== */
@media (max-width: 640px) {
    .dashboard { grid-template-columns: 1fr; }
    .linha { grid-template-columns: 1fr; }
    .card-info { grid-template-columns: 1fr; }
    .ferramentas { flex-direction: column; align-items: stretch; }
    .marca h1 { font-size: 22px; }
    .btn { width: 100%; }
    .topo .btn { width: auto; }
}