/* ===================================================================
   GymTracker — Folha de estilos única (consistência visual / UI-UX)
   Paleta definida + tipografia única (Inter) + mobile-first.
   =================================================================== */

:root {
    /* Paleta — base escura "academia" + acento energético (lima) */
    --bg:        #0f1115;
    --surface:   #181b22;
    --surface-2: #20242e;
    --border:    #2a2f3a;
    --text:      #f5f7fa;
    --text-dim:  #9aa3b2;
    --accent:    #c6ff3d;   /* lima energético */
    --accent-ink:#101400;   /* texto sobre o acento */
    --danger:    #ff5d5d;
    --ok:        #3ddc84;
    --radius:    14px;
    --shadow:    0 6px 24px rgba(0,0,0,.35);
}

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

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

.app {
    max-width: 720px;       /* largura ideal para leitura mobile/desktop */
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ---------- Cabeçalho / Navegação ---------- */
.app-header {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 18px;
    background: rgba(15,17,21,.85);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 8px; text-decoration: none; color: var(--text); font-size: 20px; }
.brand-name strong { color: var(--accent); }
.brand-icon { font-size: 22px; }
.app-nav { display: flex; gap: 6px; }
.app-nav a {
    text-decoration: none;
    color: var(--text-dim);
    font-weight: 500;
    font-size: 14px;
    padding: 8px 12px;
    border-radius: 999px;
}
.app-nav a.is-active { background: var(--accent); color: var(--accent-ink); font-weight: 700; }

.app-main { flex: 1; padding: 22px 18px 40px; }

.app-footer { padding: 20px 18px; text-align: center; color: var(--text-dim); font-size: 12px; border-top: 1px solid var(--border); }

/* ---------- Botões (altura mínima 44px = toque confortável) ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 48px;
    padding: 0 20px;
    border: none;
    border-radius: var(--radius);
    font-size: 15px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    text-decoration: none;
    transition: transform .05s ease, filter .15s ease;
}
.btn:active { transform: scale(.98); }
.btn-sm { min-height: 40px; padding: 0 14px; font-size: 14px; }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost { background: var(--surface-2); color: var(--text); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--surface); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { filter: brightness(1.08); }

/* ---------- Home / Hero ---------- */
.hero { padding: 18px 0 8px; }
.hero h1 { font-size: 32px; font-weight: 800; letter-spacing: -.5px; }
.hero-sub { color: var(--text-dim); margin: 8px 0 20px; font-size: 16px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 26px 0; }
.stat-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.stat-value { display: block; font-size: 22px; font-weight: 800; color: var(--accent); }
.stat-value small { font-size: 13px; color: var(--text-dim); }
.stat-label { font-size: 12px; color: var(--text-dim); }

.info { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.info h2 { font-size: 18px; margin-bottom: 12px; }
.info-list { list-style: none; display: grid; gap: 10px; }
.info-list li { color: var(--text-dim); padding-left: 22px; position: relative; }
.info-list li::before { content: "▸"; position: absolute; left: 0; color: var(--accent); }
.info-list strong { color: var(--text); }

/* ---------- Cabeçalho de página ---------- */
.page-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.page-head h1 { font-size: 24px; font-weight: 800; }

/* ---------- Mensagens (flash) ---------- */
.flash { border-radius: var(--radius); padding: 14px 16px; margin-bottom: 18px; font-weight: 500; }
.flash-ok  { background: rgba(61,220,132,.12); border: 1px solid var(--ok);     color: var(--ok); }
.flash-err { background: rgba(255,93,93,.10);  border: 1px solid var(--danger); color: var(--danger); }
.flash-err ul { margin-left: 18px; }

/* ---------- Listagem / Cards ---------- */
.list { display: grid; gap: 14px; }
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.card-top { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.card-top h3 { font-size: 18px; }
.tag { background: var(--surface-2); color: var(--accent); font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 999px; }
.card-meta { color: var(--text-dim); font-size: 14px; display: flex; gap: 6px; flex-wrap: wrap; }
.card-obs { color: var(--text-dim); font-size: 14px; background: var(--surface-2); padding: 10px 12px; border-radius: 10px; }
.card-actions { display: flex; gap: 10px; }
.card-static { margin: 18px 0; }

/* ---------- Estado vazio ---------- */
.empty { text-align: center; padding: 50px 20px; background: var(--surface); border: 1px dashed var(--border); border-radius: var(--radius); }
.empty-emoji { font-size: 48px; margin-bottom: 8px; }
.empty p { color: var(--text-dim); margin-bottom: 16px; }

/* ---------- Formulários ---------- */
.form { display: grid; gap: 16px; }
.field { display: grid; gap: 6px; }
.field > span { font-size: 14px; font-weight: 600; color: var(--text-dim); }
.field input, .field select, .field textarea {
    width: 100%;
    min-height: 48px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    padding: 12px 14px;
    font-size: 16px;            /* >=16px evita zoom automático no iOS */
    font-family: inherit;
}
.field textarea { min-height: 90px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(198,255,61,.18);
}
.field-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.form-actions { display: flex; gap: 10px; margin-top: 6px; }

/* ---------- Confirmação de exclusão ---------- */
.confirm { text-align: center; padding: 20px 0; }
.confirm-emoji { font-size: 48px; }
.confirm h1 { font-size: 24px; margin: 8px 0; }
.confirm-warn { color: var(--danger); font-size: 14px; }
.confirm-actions { display: flex; justify-content: center; gap: 12px; margin-top: 10px; }
.confirm .card { text-align: left; }

/* ---------- Responsividade ---------- */
@media (max-width: 480px) {
    .stats { grid-template-columns: 1fr; }
    .field-row { grid-template-columns: 1fr; }
    .hero h1 { font-size: 26px; }
    .app-nav a { padding: 8px 10px; font-size: 13px; }
}