/* ── Cabinet UI — v1.0 ────────────────────────────────────────── */
/* Змінити дизайн: правте тільки блок :root нижче               */
/* ────────────────────────────────────────────────────────────── */

:root {
    /* Кольори */
    --clr-bg:          #f8fafc;
    --clr-surface:     #ffffff;
    --clr-border:      #e2e8f0;

    --clr-primary:     #3b82f6;
    --clr-primary-h:   #2563eb;
    --clr-primary-txt: #ffffff;

    --clr-dark:        #0f172a;
    --clr-txt:         #1e293b;
    --clr-muted:       #64748b;

    --clr-success:     #22c55e;
    --clr-error:       #ef4444;

    /* Типографіка */
    --font:            'Inter', system-ui, -apple-system, sans-serif;
    --font-size:       15px;
    --line-height:     1.6;

    /* Відступи / радіуси */
    --radius-sm:       6px;
    --radius:          12px;
    --radius-lg:       18px;
    --shadow-sm:       0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
    --shadow:          0 4px 16px rgba(0,0,0,.08);

    --container:       1160px;
    --header-h:        64px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: var(--font-size); scroll-behavior: smooth; }
body {
    font-family: var(--font);
    background: var(--clr-bg);
    color: var(--clr-txt);
    line-height: var(--line-height);
    min-height: 100vh;
}
a { color: var(--clr-primary); text-decoration: none; }
a:hover { color: var(--clr-primary-h); text-decoration: underline; }
img { max-width: 100%; display: block; }

/* ── Container ── */
.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 20px;
}

/* ── Header ── */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--header-h);
    background: var(--clr-dark);
    border-bottom: 1px solid rgba(255,255,255,.07);
    box-shadow: 0 2px 12px rgba(0,0,0,.18);
}
.site-header .container {
    display: flex;
    align-items: center;
    height: 100%;
    gap: 32px;
}
.site-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: -.3px;
    white-space: nowrap;
}
.site-logo span { color: var(--clr-primary); }
.site-logo:hover { text-decoration: none; color: #fff; }

.site-nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.site-nav a {
    color: rgba(255,255,255,.72);
    font-size: .875rem;
    font-weight: 500;
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    transition: background .15s, color .15s;
}
.site-nav a:hover { background: rgba(255,255,255,.1); color: #fff; text-decoration: none; }
.site-nav a.active { background: rgba(59,130,246,.25); color: var(--clr-primary); }

/* ── Footer ── */
.site-footer {
    background: var(--clr-dark);
    color: rgba(255,255,255,.5);
    font-size: .8rem;
    padding: 28px 0;
    margin-top: auto;
}
.site-footer .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}
.site-footer a { color: rgba(255,255,255,.6); }
.site-footer a:hover { color: #fff; text-decoration: none; }
.footer-links { display: flex; gap: 20px; }

/* ── Page wrapper ── */
.page-wrap {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}
.page-main { flex: 1; padding: 40px 0 60px; }

/* ── Card ── */
.card {
    background: var(--clr-surface);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    padding: 32px;
}
.card-sm { padding: 24px; }
.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--clr-dark);
    margin-bottom: 4px;
}
.card-subtitle {
    font-size: .875rem;
    color: var(--clr-muted);
    margin-bottom: 28px;
}

/* ── Form ── */
.form-group { margin-bottom: 18px; }
.form-label {
    display: block;
    font-size: .8rem;
    font-weight: 600;
    color: var(--clr-muted);
    text-transform: uppercase;
    letter-spacing: .5px;
    margin-bottom: 6px;
}
.form-control {
    width: 100%;
    padding: 10px 14px;
    border: 1.5px solid var(--clr-border);
    border-radius: var(--radius-sm);
    font-size: .9375rem;
    font-family: var(--font);
    color: var(--clr-txt);
    background: var(--clr-surface);
    outline: none;
    transition: border-color .15s, box-shadow .15s;
}
.form-control:focus {
    border-color: var(--clr-primary);
    box-shadow: 0 0 0 3px rgba(59,130,246,.15);
}
.form-control.is-invalid { border-color: var(--clr-error); }

.form-hint {
    font-size: .8rem;
    color: var(--clr-muted);
    margin-top: 5px;
}

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 22px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: .9375rem;
    font-weight: 600;
    font-family: var(--font);
    cursor: pointer;
    transition: background .15s, transform .1s, box-shadow .15s;
    white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
    background: var(--clr-primary);
    color: var(--clr-primary-txt);
    box-shadow: 0 2px 8px rgba(59,130,246,.35);
}
.btn-primary:hover {
    background: var(--clr-primary-h);
    box-shadow: 0 4px 14px rgba(59,130,246,.4);
    text-decoration: none;
    color: #fff;
}
.btn-ghost {
    background: transparent;
    color: var(--clr-primary);
    border: 1.5px solid var(--clr-primary);
}
.btn-ghost:hover { background: rgba(59,130,246,.07); text-decoration: none; }
.btn-block { width: 100%; }
.btn-lg { padding: 13px 28px; font-size: 1rem; }

/* ── Alerts ── */
.alert {
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    font-size: .875rem;
    margin-bottom: 20px;
    border: 1px solid transparent;
}
.alert-error {
    background: #fef2f2;
    border-color: #fecaca;
    color: #b91c1c;
}
.alert-success {
    background: #f0fdf4;
    border-color: #bbf7d0;
    color: #15803d;
}
.alert-info {
    background: #eff6ff;
    border-color: #bfdbfe;
    color: #1d4ed8;
}

/* ── Auth page ── */
.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - var(--header-h));
    padding: 40px 20px;
    background: var(--clr-bg);
}
.auth-box {
    width: 100%;
    max-width: 420px;
}
.auth-logo {
    text-align: center;
    margin-bottom: 28px;
}
.auth-logo-text {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--clr-dark);
    letter-spacing: -.5px;
}
.auth-logo-text span { color: var(--clr-primary); }
.auth-tagline {
    font-size: .85rem;
    color: var(--clr-muted);
    margin-top: 4px;
}
.auth-tabs {
    display: flex;
    border-bottom: 2px solid var(--clr-border);
    margin-bottom: 24px;
}
.auth-tab {
    flex: 1;
    padding: 10px;
    text-align: center;
    font-size: .875rem;
    font-weight: 600;
    color: var(--clr-muted);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: color .15s, border-color .15s;
}
.auth-tab.active { color: var(--clr-primary); border-color: var(--clr-primary); }
.auth-tab:hover { color: var(--clr-primary); }

.auth-form { display: none; }
.auth-form.active { display: block; }

.divider {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--clr-muted);
    font-size: .8rem;
    margin: 20px 0;
}
.divider::before, .divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--clr-border);
}

/* ── Dashboard ── */
.page-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--clr-dark);
    margin-bottom: 4px;
}
.page-subtitle { color: var(--clr-muted); font-size: .9rem; margin-bottom: 32px; }

.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ── Responsive ── */
@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .card { padding: 20px; }
    .site-footer .container { flex-direction: column; text-align: center; }
    .footer-links { justify-content: center; }
}
@media (max-width: 480px) {
    .site-nav a { padding: 6px 8px; font-size: .8rem; }
    .site-logo { font-size: 1.1rem; }
}