:root {
    --brand-blue: #0d6efd;
    --brand-blue-dark: #0a58ca;
    --brand-blue-light: #e7f1ff;
    --brand-navy: #073a7a;
    --sidebar-width: 240px;
    --navbar-height: 56px;
}

body {
    font-family: 'Figtree', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: #f4f7fc;
    color: #1f2937;
}

a {
    color: var(--brand-blue);
}

/* ---------- Navbar ---------- */
.app-navbar {
    height: var(--navbar-height);
    background: linear-gradient(90deg, var(--brand-blue-dark), var(--brand-blue));
    z-index: 1040;
    box-shadow: 0 2px 8px rgba(13, 110, 253, .25);
}

.app-navbar .navbar-brand {
    color: #fff;
    font-weight: 700;
    letter-spacing: .02em;
}

.sms-driver-badge {
    background-color: rgba(255, 255, 255, .15);
    color: #fff;
    padding: .35rem .65rem;
    border-radius: 999px;
    font-size: .75rem;
    text-transform: uppercase;
    letter-spacing: .04em;
}

/* ---------- Layout shell ---------- */
.app-shell {
    display: flex;
    padding-top: var(--navbar-height);
    min-height: 100vh;
}

.app-sidebar {
    width: var(--sidebar-width);
    flex-shrink: 0;
    background: #fff;
    border-right: 1px solid #e5e9f2;
    position: fixed;
    top: var(--navbar-height);
    bottom: 0;
    left: 0;
    overflow-y: auto;
    z-index: 1030;
    transition: transform .2s ease-in-out;
}

.app-content {
    margin-left: var(--sidebar-width);
    width: calc(100% - var(--sidebar-width));
    min-height: calc(100vh - var(--navbar-height));
}

.sidebar-link {
    color: #445069;
    border-radius: .5rem;
    padding: .6rem .9rem;
    margin-bottom: .15rem;
    font-weight: 500;
    display: flex;
    align-items: center;
}

.sidebar-link:hover {
    background-color: var(--brand-blue-light);
    color: var(--brand-blue-dark);
}

.sidebar-link.active {
    background-color: var(--brand-blue);
    color: #fff;
}

.sidebar-heading {
    text-transform: uppercase;
    font-size: .7rem;
    font-weight: 700;
    letter-spacing: .06em;
    color: #94a3b8;
    padding: .75rem .9rem .25rem;
}

.sidebar-backdrop {
    display: none;
    position: fixed;
    inset: var(--navbar-height) 0 0 0;
    background: rgba(0, 0, 0, .35);
    z-index: 1020;
}

@media (max-width: 991.98px) {
    .app-sidebar {
        transform: translateX(-100%);
    }
    .app-sidebar.show {
        transform: translateX(0);
        box-shadow: 0 0 20px rgba(0, 0, 0, .2);
    }
    .app-content {
        margin-left: 0;
        width: 100%;
    }
    .sidebar-backdrop.show {
        display: block;
    }
}

/* ---------- Page basics ---------- */
.page-title {
    color: var(--brand-navy);
    font-weight: 700;
}

/* ---------- Cards ---------- */
.card {
    border: 1px solid #e5e9f2;
    border-radius: .75rem;
}

.stat-card {
    border-left: 4px solid var(--brand-blue);
    background: #fff;
}

.stat-card .stat-icon {
    width: 48px;
    height: 48px;
    border-radius: .75rem;
    background: var(--brand-blue-light);
    color: var(--brand-blue-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
}

.stat-card .stat-value {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--brand-navy);
}

/* ---------- Buttons ---------- */
.btn-primary {
    background-color: var(--brand-blue);
    border-color: var(--brand-blue);
}

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

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

.btn-outline-primary:hover {
    background-color: var(--brand-blue);
    border-color: var(--brand-blue);
}

/* ---------- Tables ---------- */
.table thead {
    background-color: var(--brand-blue-light);
}

.table thead th {
    color: var(--brand-navy);
    font-weight: 600;
    border-bottom-width: 1px;
    white-space: nowrap;
}

/* ---------- Badges ---------- */
.badge-status-sent { background-color: #198754; }
.badge-status-queued { background-color: #6c757d; }
.badge-status-failed { background-color: #dc3545; }
.badge-status-draft { background-color: #6c757d; }
.badge-status-sending { background-color: #0d6efd; }
.badge-status-completed { background-color: #198754; }

/* ---------- Guest / auth pages ---------- */
.guest-body {
    background: linear-gradient(135deg, var(--brand-blue-light), #fff 60%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
}

.guest-wrapper {
    width: 100%;
    max-width: 420px;
}

.guest-brand {
    color: var(--brand-blue-dark);
}

.account-logo {
    max-height: 32px;
    max-width: 160px;
    object-fit: contain;
}

.guest-logo.account-logo {
    max-height: 56px;
}

.guest-logo .account-logo-text {
    font-weight: 700;
    font-size: 1.5rem;
}

.app-navbar .account-logo {
    max-height: 28px;
    background: #fff;
    border-radius: .25rem;
    padding: 2px 6px;
}

.app-navbar .account-logo-text {
    color: #fff;
    font-weight: 700;
    letter-spacing: .02em;
}

.guest-card {
    border-radius: 1rem;
    border: 1px solid #e5e9f2;
}

/* ---------- Compose ---------- */
#compose-counter.text-danger {
    font-weight: 700;
}

.recipient-picker {
    max-height: 260px;
    overflow-y: auto;
    border: 1px solid #e5e9f2;
    border-radius: .5rem;
    padding: .5rem;
}

/* ---------- Credits ---------- */
.credit-balance {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--brand-navy);
}

.credit-balance.low {
    color: #dc3545;
}

/* ---------- Utilities ---------- */
.text-brand {
    color: var(--brand-blue);
}

.bg-brand-light {
    background-color: var(--brand-blue-light);
}