:root {
    --os-bg: #0f1410;
    --os-card: #1a2318;
    --os-border: #2a3d20;
    --os-text: #e8efe4;
    --os-muted: #b4c4ac;
    --os-accent: #c1d849;
    --os-accent-dim: #9ab838;
    --os-placeholder: #9aad92;
}

* { box-sizing: border-box; }

body.os-body {
    margin: 0;
    font-family: 'Inter', system-ui, sans-serif;
    background: var(--os-bg);
    color: var(--os-text);
    min-height: 100vh;
}

.os-login-body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--os-bg);
    color: var(--os-text);
}

.os-login-card {
    background: var(--os-card);
    border: 1px solid var(--os-border);
    border-radius: 12px;
    padding: 2rem;
    width: 100%;
    max-width: 400px;
}

.os-login-icon {
    font-size: 2.5rem;
    color: var(--os-accent);
}

.os-input {
    background: #121a10 !important;
    border-color: var(--os-border) !important;
    color: var(--os-text) !important;
}

.os-input:focus {
    border-color: var(--os-accent) !important;
    box-shadow: 0 0 0 0.2rem rgba(193, 216, 73, 0.2) !important;
}

/* Placeholder text — Bootstrap defaults are too dark on this theme */
.os-body .form-control::placeholder,
.os-body .form-control.os-input::placeholder,
.os-body textarea.form-control::placeholder,
.os-login-body .form-control::placeholder,
.os-login-body .os-input::placeholder {
    color: var(--os-placeholder) !important;
    opacity: 1;
}

.os-body .form-control::-webkit-input-placeholder,
.os-body textarea.form-control::-webkit-input-placeholder,
.os-login-body .form-control::-webkit-input-placeholder {
    color: var(--os-placeholder) !important;
    opacity: 1;
}

.os-body .form-control::-moz-placeholder,
.os-body textarea.form-control::-moz-placeholder,
.os-login-body .form-control::-moz-placeholder {
    color: var(--os-placeholder) !important;
    opacity: 1;
}

.os-body .form-select.os-input option[value=""] {
    color: var(--os-placeholder);
}

.btn-os-primary {
    background: var(--os-accent);
    border: none;
    color: #1a2318;
    font-weight: 600;
}

.btn-os-primary:hover:not(:disabled) {
    background: var(--os-accent-dim);
    color: #1a2318;
}

.btn-os-primary:disabled {
    opacity: 0.5;
}

.os-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 16px;
    background: var(--os-card);
    border-bottom: 1px solid var(--os-border);
    flex-wrap: wrap;
    position: sticky;
    top: 0;
    z-index: 100;
}

.os-brand { font-weight: 600; }

.os-mode-toggle {
    display: flex;
    background: #121a10;
    border-radius: 8px;
    padding: 3px;
    border: 1px solid var(--os-border);
}

.os-mode-btn {
    border: none;
    background: transparent;
    color: var(--os-muted);
    padding: 8px 20px;
    border-radius: 6px;
    font-weight: 500;
    font-size: 14px;
    cursor: pointer;
}

.os-mode-btn.active {
    background: var(--os-accent);
    color: #1a2318;
}

.os-event-panel {
    padding: 12px 16px;
    background: #151d12;
    border-bottom: 1px solid var(--os-border);
}

.os-main {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 0;
    min-height: calc(100vh - 120px);
}

@media (max-width: 992px) {
    .os-main {
        grid-template-columns: 1fr;
    }
    .os-sidebar {
        position: sticky;
        bottom: 0;
        border-top: 1px solid var(--os-border);
    }
}

.os-catalog {
    padding: 16px;
    overflow: auto;
}

.os-sidebar {
    display: flex;
    flex-direction: column;
    padding: 16px;
    background: var(--os-card);
    border-left: 1px solid var(--os-border);
    min-height: calc(100vh - 57px);
}

.os-sidebar-main {
    flex: 1 1 auto;
    min-height: 0;
}

.os-sidebar-footer {
    flex-shrink: 0;
    margin-top: auto;
    padding-top: 16px;
    border-top: 1px solid var(--os-border);
}

.os-sidebar-date .os-date-input {
    min-width: 0;
    width: 100%;
}

.os-dev-credit.faizi-dev-credit {
    margin-top: 10px;
}

.os-section-title {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--os-muted);
    margin-bottom: 12px;
    font-weight: 600;
}

.os-table-wrap {
    max-height: calc(100vh - 280px);
    overflow: auto;
    border: 1px solid var(--os-border);
    border-radius: 8px;
}

.os-items-table {
    color: var(--os-text);
    --bs-table-bg: transparent;
    --bs-table-color: var(--os-text);
    --bs-table-border-color: var(--os-border);
}

.os-items-table thead th {
    position: sticky;
    top: 0;
    background: #1e2a18;
    z-index: 1;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--os-text);
}

.os-items-table td { vertical-align: middle; font-size: 13px; }

.os-item-name { font-weight: 500; color: var(--os-text); }
.os-item-sku { font-size: 11px; color: var(--os-muted); }

/* Readable labels & secondary text (override Bootstrap dark-theme defaults) */
.os-body .form-label,
.os-login-body .form-label,
.os-label {
    color: var(--os-text) !important;
}

.os-subtitle,
.os-muted,
.os-body .text-muted,
.os-login-body .text-muted {
    color: var(--os-muted) !important;
}

.os-summary-link {
    color: var(--os-muted);
}

.os-summary-link:hover {
    color: var(--os-text);
}

.os-user {
    color: var(--os-muted);
}

.btn-os-outline {
    border: 1px solid var(--os-border);
    color: var(--os-text);
    background: transparent;
}

.btn-os-outline:hover {
    border-color: var(--os-accent);
    color: var(--os-accent);
    background: rgba(193, 216, 73, 0.08);
}

.os-date-label {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.os-date-input {
    min-width: 148px;
    cursor: pointer;
    color-scheme: dark;
}

.os-date-input::-webkit-calendar-picker-indicator {
    cursor: pointer;
    filter: invert(0.85);
    opacity: 1;
}

/* Remove browser spinner arrows on number inputs */
.os-body input[type="number"]::-webkit-outer-spin-button,
.os-body input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.os-body input[type="number"] {
    -moz-appearance: textfield;
    appearance: textfield;
}

.os-qty-control {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
}

.os-qty-btn {
    width: 32px;
    height: 32px;
    border: 1px solid var(--os-border);
    background: #121a10;
    color: var(--os-text);
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    line-height: 1;
}

.os-qty-btn:hover { border-color: var(--os-accent); color: var(--os-accent); }

.os-qty-input {
    width: 48px;
    text-align: center;
    padding: 4px;
    border: 1px solid var(--os-border);
    background: #121a10;
    color: var(--os-text);
    border-radius: 6px;
    font-size: 14px;
}

.os-summary-row {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    font-size: 14px;
}

.os-summary-row.os-grand {
    font-size: 18px;
    font-weight: 700;
    color: var(--os-accent);
    border-top: 1px solid var(--os-border);
    margin-top: 8px;
    padding-top: 12px;
}

.os-customer-details summary {
    cursor: pointer;
    user-select: none;
}

.os-customer-details[open] summary { margin-bottom: 4px; }

tr.os-low-stock td { opacity: 0.65; }