:root {
    --jkt-primary: #1b7fed;
    --jkt-primary-dark: #1568c4;
    --jkt-primary-light: #eaf3ff;
    --jkt-ink: #10161f;
    --jkt-muted: #6b7686;
    --jkt-border: #e8ecf2;
    --jkt-bg: #f6f8fb;
    --jkt-sidebar-w: 248px;
    --jkt-radius: 14px;
    --jkt-shadow: 0 1px 2px rgba(16, 22, 31, 0.04), 0 8px 24px rgba(16, 22, 31, 0.06);
}

body {
    background-color: var(--jkt-bg);
    color: var(--jkt-ink);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 650;
    letter-spacing: -0.01em;
}

a { color: var(--jkt-primary); }

/* ---------- Buttons ---------- */
.btn {
    border-radius: 10px;
    font-weight: 550;
    letter-spacing: 0.01em;
}

.btn-primary {
    background-color: var(--jkt-primary);
    border-color: var(--jkt-primary);
}

.btn-primary:hover, .btn-primary:focus {
    background-color: var(--jkt-primary-dark);
    border-color: var(--jkt-primary-dark);
}

.btn-outline-primary {
    color: var(--jkt-primary);
    border-color: var(--jkt-primary);
}

.btn-outline-primary:hover {
    background-color: var(--jkt-primary);
}

/* WhatsApp brand button */
.btn-whatsapp {
    background-color: #25D366;
    border-color: #25D366;
    color: #fff;
}
.btn-whatsapp:hover { background-color: #1ebe57; border-color: #1ebe57; color: #fff; }

/* ---------- Cards ---------- */
.card {
    border: 1px solid var(--jkt-border);
    border-radius: var(--jkt-radius);
    box-shadow: var(--jkt-shadow);
}

.card-elevate {
    transition: transform .15s ease, box-shadow .15s ease;
}
.card-elevate:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(16,22,31,0.06), 0 16px 32px rgba(16,22,31,0.08);
}

.stat-card .stat-label {
    font-size: .78rem;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--jkt-muted);
    font-weight: 600;
}
.stat-card .stat-value {
    font-size: 1.65rem;
    font-weight: 700;
}
.stat-card .stat-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--jkt-primary-light);
    color: var(--jkt-primary);
    font-size: 1.1rem;
}

/* ---------- Tables ---------- */
.table {
    --bs-table-border-color: var(--jkt-border);
    vertical-align: middle;
}
.table thead th {
    font-size: .74rem;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--jkt-muted);
    font-weight: 700;
    border-bottom-width: 1px;
    background-color: #fbfcfe;
}
.table-hover tbody tr:hover {
    background-color: var(--jkt-primary-light);
    cursor: pointer;
}

/* ---------- Status badges (pill, soft colors) ---------- */
.badge {
    border-radius: 999px;
    font-weight: 600;
    padding: .4em .8em;
    font-size: .74rem;
}
.badge-status-new { background-color: #eef0f3; color: #495365; }
.badge-status-contacted { background-color: #e4f7fb; color: #0b7285; }
.badge-status-negotiating { background-color: #fff6e0; color: #92680c; }
.badge-status-awaiting_payment { background-color: #ffe9d9; color: #a34e0a; }
.badge-status-deposit_paid { background-color: #e2ecff; color: #1c4dc4; }
.badge-status-balance_due { background-color: #f1e7ff; color: #6425c9; }
.badge-status-paid { background-color: #e2f7ea; color: #147a41; }
.badge-status-lost { background-color: #f3f4f6; color: #383e47; }

/* ---------- Sidebar layout (desktop) ---------- */
.app-shell {
    display: flex;
    min-height: 100vh;
}

.app-sidebar {
    width: var(--jkt-sidebar-w);
    flex-shrink: 0;
    background: #fff;
    border-right: 1px solid var(--jkt-border);
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
    height: 100vh;
}

.app-sidebar .sidebar-brand {
    padding: 1.25rem 1.25rem 1rem;
}

.app-sidebar .nav-link {
    display: flex;
    align-items: center;
    gap: .65rem;
    padding: .6rem .9rem;
    margin: .15rem .75rem;
    border-radius: 10px;
    color: #4a5568;
    font-weight: 550;
    font-size: .92rem;
}
.app-sidebar .nav-link i { font-size: 1.05rem; width: 1.1rem; text-align: center; }
.app-sidebar .nav-link:hover { background-color: var(--jkt-bg); color: var(--jkt-ink); }
.app-sidebar .nav-link.active {
    background-color: var(--jkt-primary-light);
    color: var(--jkt-primary-dark);
}

.app-sidebar .sidebar-section-label {
    font-size: .68rem;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--jkt-muted);
    padding: .75rem 1.15rem .25rem;
    font-weight: 700;
}

.app-sidebar .sidebar-footer {
    margin-top: auto;
    padding: 1rem 1.25rem;
    border-top: 1px solid var(--jkt-border);
}

.app-main {
    flex: 1;
    min-width: 0;
}

.app-topbar {
    background: #fff;
    border-bottom: 1px solid var(--jkt-border);
    padding: .85rem 1.25rem;
    position: sticky;
    top: 0;
    z-index: 10;
}

.app-content {
    padding: 1.5rem;
}

@media (max-width: 991.98px) {
    .app-sidebar { display: none; }
    .app-content { padding: 1rem; }
    .app-topbar { padding: .75rem 1rem; }
}

.offcanvas .nav-link {
    display: flex;
    align-items: center;
    gap: .65rem;
    padding: .7rem 1rem;
    border-radius: 10px;
    color: #4a5568;
    font-weight: 550;
}
.offcanvas .nav-link i { width: 1.2rem; text-align: center; }
.offcanvas .nav-link.active { background-color: var(--jkt-primary-light); color: var(--jkt-primary-dark); }

/* ---------- Auth / guest pages ---------- */
.auth-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at top left, #1c2636, var(--jkt-ink));
}

.auth-card {
    max-width: 420px;
    width: 100%;
}

/* ---------- Quick-view modal ---------- */
.modal-content {
    border-radius: var(--jkt-radius);
    border: none;
}
.modal-header {
    border-bottom: 1px solid var(--jkt-border);
}

/* ---------- Copy-link affordance ---------- */
.copy-link-box {
    background: var(--jkt-bg);
    border: 1px dashed var(--jkt-border);
    border-radius: 10px;
    padding: .5rem .75rem;
    font-size: .82rem;
    word-break: break-all;
}

/* ---------- Mobile: comfortable tap targets everywhere ---------- */
@media (max-width: 575.98px) {
    .btn { min-height: 44px; }
    .form-control, .form-select { font-size: 16px; min-height: 44px; }
    .card-body { padding: 1rem; }
    h2 { font-size: 1.5rem; }
    .app-content { padding-left: .75rem; padding-right: .75rem; }
}