/* ─── FinanceFlow — CSS principal ─────────────────────────────────────────── */

/* ── Variáveis de design ──────────────────────────────────────────────────── */
:root {
    --color-primary:       #1a237e;
    --color-primary-light: #3949ab;
    --color-primary-dark:  #0d1757;
    --color-success:       #00c853;
    --color-success-light: #69f0ae;
    --color-danger:        #d32f2f;
    --color-danger-light:  #ef9a9a;
    --color-warning:       #f57f17;
    --color-warning-light: #fff176;
    --color-bg:            #f5f5f5;
    --color-surface:       #ffffff;
    --color-border:        #e0e0e0;
    --color-text:          #212121;
    --color-text-muted:    #757575;
    --color-text-inverse:  #ffffff;

    --radius-sm:   6px;
    --radius-md:   12px;
    --radius-lg:   20px;
    --radius-full: 9999px;

    --shadow-sm: 0 1px 3px rgba(0,0,0,.10);
    --shadow-md: 0 4px 12px rgba(0,0,0,.12);
    --shadow-lg: 0 8px 24px rgba(0,0,0,.14);

    --sidebar-w:   260px;
    --topnav-h:    60px;
    --transition:  .2s ease;

    --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

/* ── Reset ─────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--color-primary-light); text-decoration: none; }
a:hover { text-decoration: underline; }
button, input, select, textarea { font: inherit; }

/* ── Layout app (sidebar + conteúdo) ─────────────────────────────────────── */
.app-layout {
    display: grid;
    grid-template-columns: var(--sidebar-w) 1fr;
    grid-template-rows: var(--topnav-h) 1fr;
    min-height: 100vh;
}
.app-layout .topnav    { grid-column: 1 / -1; grid-row: 1; }
.app-layout .sidebar   { grid-column: 1;      grid-row: 2; }
.app-layout .main-content { grid-column: 2;   grid-row: 2; padding: 24px; overflow-x: hidden; }

/* ── Topnav ─────────────────────────────────────────────────────────────────── */
.topnav {
    background: var(--color-primary);
    color: var(--color-text-inverse);
    display: flex;
    align-items: center;
    padding: 0 20px;
    gap: 16px;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
}
.topnav__brand a {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    text-decoration: none;
}
.topnav__logo {
    width: 36px; height: 36px;
    background: var(--color-primary-light);
    border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: .9rem;
}
.topnav__name { font-weight: 600; font-size: 1.1rem; }
.topnav__right { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.topnav__icon-btn {
    background: none; border: none; color: #fff; cursor: pointer;
    position: relative; padding: 6px;
}
.topnav__badge {
    position: absolute; top: 0; right: 0;
    background: var(--color-danger); color: #fff;
    font-size: .65rem; font-weight: 700;
    width: 18px; height: 18px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
}
.topnav__avatar-btn { background: none; border: none; cursor: pointer; }
.topnav__avatar {
    width: 36px; height: 36px; border-radius: 50%;
    object-fit: cover; border: 2px solid rgba(255,255,255,.4);
}
.topnav__avatar--initials {
    background: var(--color-primary-light);
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-weight: 700;
}
.topnav__user-menu { position: relative; }
.topnav__dropdown {
    position: absolute; right: 0; top: calc(100% + 8px);
    background: var(--color-surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    overflow: hidden;
    color: var(--color-text);
}
.topnav__dropdown[hidden] { display: none; }
.topnav__dropdown-header { padding: 14px 16px; border-bottom: 1px solid var(--color-border); }
.topnav__dropdown-header strong { display: block; font-size: .95rem; }
.topnav__dropdown-header small  { color: var(--color-text-muted); font-size: .8rem; }
.topnav__dropdown a {
    display: block; padding: 10px 16px;
    color: var(--color-text); font-size: .9rem;
    transition: background var(--transition);
}
.topnav__dropdown a:hover { background: var(--color-bg); text-decoration: none; }
.topnav__dropdown hr { border: none; border-top: 1px solid var(--color-border); }
.topnav__logout { color: var(--color-danger) !important; }
.topnav__toggle { display: none; }

/* ── Sidebar ─────────────────────────────────────────────────────────────────── */
.sidebar {
    background: var(--color-surface);
    border-right: 1px solid var(--color-border);
    height: calc(100vh - var(--topnav-h));
    position: sticky;
    top: var(--topnav-h);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}
.sidebar__nav { flex: 1; padding: 12px 0; }
.sidebar__section-label {
    font-size: .7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--color-text-muted);
    padding: 12px 20px 4px;
}
.sidebar__item {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 20px;
    color: var(--color-text);
    font-size: .9rem;
    transition: background var(--transition), color var(--transition);
    border-left: 3px solid transparent;
    text-decoration: none;
}
.sidebar__item:hover { background: rgba(26,35,126,.06); text-decoration: none; }
.sidebar__item.active {
    color: var(--color-primary);
    border-left-color: var(--color-primary);
    background: rgba(26,35,126,.08);
    font-weight: 600;
}
.sidebar__icon { width: 20px; height: 20px; flex-shrink: 0; }
.sidebar__footer { padding: 12px 20px; border-top: 1px solid var(--color-border); }
.sidebar__plan {
    font-size: .8rem; color: var(--color-text-muted);
    background: var(--color-bg);
    padding: 6px 12px;
    border-radius: var(--radius-full);
    text-align: center;
}
.sidebar__plan--premium { background: #fff8e1; color: var(--color-warning); font-weight: 600; }

/* ── Cards ───────────────────────────────────────────────────────────────────── */
.card {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 20px;
}
.card--lg { padding: 28px; }

/* ── Botões ──────────────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    border: none; cursor: pointer;
    font-size: .9rem; font-weight: 600;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
    text-decoration: none;
}
.btn:active { transform: scale(.97); }
.btn--primary { background: var(--color-primary); color: #fff; }
.btn--primary:hover { background: var(--color-primary-light); text-decoration: none; color: #fff; }
.btn--success { background: var(--color-success); color: #fff; }
.btn--danger  { background: var(--color-danger);  color: #fff; }
.btn--outline {
    background: transparent;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
}
.btn--sm { padding: 6px 14px; font-size: .82rem; }
.btn--full { width: 100%; justify-content: center; }

/* ── Formulários ─────────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: .85rem; font-weight: 600; margin-bottom: 6px; }
.form-control {
    width: 100%;
    padding: 10px 14px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: .95rem;
    background: var(--color-surface);
    color: var(--color-text);
    transition: border-color var(--transition), box-shadow var(--transition);
}
.form-control:focus {
    outline: none;
    border-color: var(--color-primary-light);
    box-shadow: 0 0 0 3px rgba(57,73,171,.15);
}
.form-control.is-invalid { border-color: var(--color-danger); }
.form-error { color: var(--color-danger); font-size: .82rem; margin-top: 4px; }

/* ── Alertas ─────────────────────────────────────────────────────────────────── */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: .9rem;
    margin-bottom: 16px;
}
.alert--success { background: #e8f5e9; color: #2e7d32; border-left: 4px solid var(--color-success); }
.alert--danger  { background: #ffebee; color: var(--color-danger); border-left: 4px solid var(--color-danger); }
.alert--warning { background: #fffde7; color: #f57f17; border-left: 4px solid var(--color-warning); }
.alert--info    { background: #e8eaf6; color: var(--color-primary); border-left: 4px solid var(--color-primary); }

/* ── Badges ──────────────────────────────────────────────────────────────────── */
.badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: var(--radius-full);
    font-size: .75rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: .04em;
}
.badge--success { background: #e8f5e9; color: #2e7d32; }
.badge--danger  { background: #ffebee; color: var(--color-danger); }
.badge--warning { background: #fff8e1; color: #f57f17; }
.badge--info    { background: #e8eaf6; color: var(--color-primary); }
.badge--primary { background: var(--color-primary); color: #fff; }

/* ── Progress bar ────────────────────────────────────────────────────────────── */
.progress { background: var(--color-border); border-radius: var(--radius-full); overflow: hidden; height: 10px; }
.progress__bar {
    height: 100%; background: var(--color-primary-light);
    border-radius: var(--radius-full);
    transition: width .5s ease;
}
.progress__bar--success { background: var(--color-success); }
.progress__bar--warning { background: var(--color-warning); }

/* ── Utilitários ─────────────────────────────────────────────────────────────── */
.text-muted   { color: var(--color-text-muted); }
.text-success { color: var(--color-success); }
.text-danger  { color: var(--color-danger); }
.text-center  { text-align: center; }
.mt-1 { margin-top:  8px; } .mt-2 { margin-top: 16px; } .mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom:  8px; } .mb-2 { margin-bottom: 16px; } .mb-3 { margin-bottom: 24px; }
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

/* ── Responsivo (mobile-first) ───────────────────────────────────────────────── */
@media (max-width: 768px) {
    .app-layout {
        grid-template-columns: 1fr;
        grid-template-rows: var(--topnav-h) auto 1fr;
    }
    .app-layout .sidebar {
        grid-column: 1; grid-row: 2;
        position: fixed;
        top: var(--topnav-h); left: 0;
        width: var(--sidebar-w);
        height: calc(100vh - var(--topnav-h));
        transform: translateX(-100%);
        transition: transform var(--transition);
        z-index: 99;
        box-shadow: var(--shadow-lg);
    }
    .app-layout .sidebar.open { transform: translateX(0); }
    .app-layout .main-content { grid-column: 1; grid-row: 2; padding: 16px; }
    .topnav__toggle {
        display: flex; flex-direction: column; gap: 5px;
        background: none; border: none; cursor: pointer; padding: 6px;
    }
    .topnav__toggle span {
        display: block; width: 22px; height: 2px;
        background: #fff; border-radius: 2px;
        transition: transform var(--transition), opacity var(--transition);
    }
}