* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #22c55e;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --background: #f8fafc;
    --surface: #ffffff;
    --surface-alt: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
    --primary-color: #3b82f6;
    --primary-hover: #60a5fa;
    --secondary-color: #94a3b8;
    --success-color: #4ade80;
    --danger-color: #f87171;
    --warning-color: #fbbf24;
    --background: #0f172a;
    --surface: #1e293b;
    --surface-alt: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --border-color: #475569;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    margin-bottom: 30px;
    padding: 20px;
    background: var(--surface);
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: background-color 0.3s;
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

header h1 {
    color: var(--primary-color);
    font-size: 2rem;
}

.btn-icon {
    background: var(--surface-alt);
    border: 1px solid var(--border-color);
    padding: 8px 12px;
    font-size: 1.2rem;
    cursor: pointer;
    border-radius: 8px;
    transition: background-color 0.2s;
}

.btn-icon:hover {
    background: var(--border-color);
}

.icon-sun { display: none; }
.icon-moon { display: inline; }
[data-theme="dark"] .icon-sun { display: inline; }
[data-theme="dark"] .icon-moon { display: none; }

.hospital-info {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-align: center;
}

.hospital-info p {
    margin: 5px 0;
}

main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

@media (max-width: 900px) {
    main { grid-template-columns: 1fr; }
}

section {
    background: var(--surface);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--shadow);
    transition: background-color 0.3s;
}

section h2 {
    font-size: 1.25rem;
    margin-bottom: 15px;
    color: var(--text-primary);
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 10px;
}

.search-controls {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

#search-input {
    flex: 1;
    min-width: 200px;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.2s, background-color 0.3s;
    background: var(--surface);
    color: var(--text-primary);
}

#search-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

#search-input::placeholder {
    color: var(--text-secondary);
}

#price-type {
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    background: var(--surface);
    color: var(--text-primary);
    cursor: pointer;
    transition: background-color 0.3s;
}

/* Payer select */
.payer-select-wrapper {
    margin-bottom: 15px;
}

#payer-select {
    width: 100%;
    padding: 10px 14px;
    border: 2px solid var(--primary-color);
    border-radius: 8px;
    font-size: 0.95rem;
    background: var(--surface);
    color: var(--text-primary);
    cursor: pointer;
    transition: background-color 0.3s;
}

.payer-loading {
    font-size: 0.85rem;
    color: var(--primary-color);
    padding: 8px 0;
    font-style: italic;
}

.search-results {
    max-height: 500px;
    overflow-y: auto;
}

.search-result-item {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 8px;
    transition: background-color 0.2s, transform 0.1s;
}

.search-result-item:hover {
    background-color: var(--surface-alt);
}

.item-info {
    flex: 1;
    min-width: 0;
}

.item-description {
    font-weight: 500;
    margin-bottom: 4px;
    word-break: break-word;
}

.item-code {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.item-range {
    font-size: 0.7rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

.item-dose-info {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 6px;
}

.dose-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 500;
}

.dose-badge.strength { background: #dbeafe; color: #1e40af; }
.dose-badge.route { background: #dcfce7; color: #166534; }
.dose-badge.form { background: #fef3c7; color: #92400e; }
.dose-badge.unit-price { background: #f3e8ff; color: #7c3aed; }
.dose-badge.package { background: #e0e7ff; color: #4338ca; }

[data-theme="dark"] .dose-badge.strength { background: #1e3a5f; color: #93c5fd; }
[data-theme="dark"] .dose-badge.route { background: #14532d; color: #86efac; }
[data-theme="dark"] .dose-badge.form { background: #78350f; color: #fde68a; }
[data-theme="dark"] .dose-badge.unit-price { background: #4c1d95; color: #c4b5fd; }
[data-theme="dark"] .dose-badge.package { background: #312e81; color: #a5b4fc; }

.item-price-container {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    margin: 0 10px;
}

.item-price {
    font-weight: 600;
    color: var(--primary-color);
    font-size: 1.1rem;
    white-space: nowrap;
}

.item-price.no-rate {
    color: var(--text-secondary);
    font-style: italic;
}

.item-unit-price {
    font-size: 0.7rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

/* Setting badge */
.setting-badge {
    display: inline-block;
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 0.6rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-right: 4px;
    vertical-align: middle;
}

.setting-badge.inpatient { background: #fce7f3; color: #9d174d; }
.setting-badge.outpatient { background: #d1fae5; color: #065f46; }
[data-theme="dark"] .setting-badge.inpatient { background: #831843; color: #fce7f3; }
[data-theme="dark"] .setting-badge.outpatient { background: #064e3b; color: #d1fae5; }

.no-rate {
    color: var(--text-secondary);
    font-style: italic;
}

.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.btn-primary { background-color: var(--primary-color); color: white; }
.btn-primary:hover { background-color: var(--primary-hover); }
.btn-secondary { background-color: var(--secondary-color); color: white; }
.btn-secondary:hover { background-color: #475569; }
.btn-success { background-color: var(--success-color); color: white; }
.btn-success:hover { background-color: #16a34a; }
.btn-danger { background-color: var(--danger-color); color: white; padding: 4px 8px; font-size: 0.8rem; }
.btn-danger:hover { background-color: #dc2626; }
.btn-add { background-color: var(--success-color); color: white; min-width: 70px; align-self: center; }

.cart-items {
    min-height: 200px;
    max-height: 400px;
    overflow-y: auto;
    margin-bottom: 20px;
}

.empty-cart {
    text-align: center;
    color: var(--text-secondary);
    padding: 40px 20px;
    font-style: italic;
}

.cart-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 8px;
    background: var(--surface-alt);
    transition: background-color 0.3s;
}

.cart-item-info {
    flex: 1;
    min-width: 0;
}

.cart-item-description {
    font-weight: 500;
    margin-bottom: 2px;
    font-size: 0.95rem;
    word-break: break-word;
}

.cart-item-code {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.cart-item-dose {
    font-size: 0.75rem;
    color: var(--primary-color);
    margin-top: 2px;
}

.cart-item-controls {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.quantity-control {
    display: flex;
    align-items: center;
    gap: 5px;
}

.quantity-control button {
    width: 28px;
    height: 28px;
    border: 1px solid var(--border-color);
    background: var(--surface);
    color: var(--text-primary);
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s;
}

.quantity-control button:hover { background: var(--border-color); }

.quantity-control span {
    min-width: 30px;
    text-align: center;
    font-weight: 500;
}

.cart-item-price {
    font-weight: 600;
    color: var(--primary-color);
    min-width: 80px;
    text-align: right;
}

.cart-summary {
    border-top: 2px solid var(--border-color);
    padding-top: 15px;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    font-size: 1rem;
}

.summary-row.total {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
    border-top: 1px solid var(--border-color);
    margin-top: 10px;
    padding-top: 15px;
}

.cart-summary .btn {
    width: 48%;
    margin-top: 15px;
}

.cart-summary .btn:first-of-type {
    margin-right: 4%;
}

footer {
    margin-top: 30px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.disclaimer {
    margin-top: 10px;
    font-style: italic;
    color: var(--secondary-color);
}

.loading {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
}

.loading::after {
    content: '';
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 10px;
    vertical-align: middle;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.no-results {
    text-align: center;
    color: var(--text-secondary);
    padding: 20px;
    font-style: italic;
}

.results-count {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

/* Item type badges */
.item-type-badge {
    display: inline-block;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-right: 6px;
    vertical-align: middle;
}

.item-type-badge.pharmacy { background: #fef3c7; color: #92400e; }
.item-type-badge.procedure { background: #dbeafe; color: #1e40af; }
.item-type-badge.room { background: #dcfce7; color: #166534; }
.item-type-badge.supply { background: #f3e8ff; color: #7c3aed; }
.item-type-badge.other { background: #e5e7eb; color: #374151; }

[data-theme="dark"] .item-type-badge.pharmacy { background: #78350f; color: #fde68a; }
[data-theme="dark"] .item-type-badge.procedure { background: #1e3a5f; color: #93c5fd; }
[data-theme="dark"] .item-type-badge.room { background: #14532d; color: #86efac; }
[data-theme="dark"] .item-type-badge.supply { background: #4c1d95; color: #c4b5fd; }
[data-theme="dark"] .item-type-badge.other { background: #374151; color: #d1d5db; }

/* Print styles */
@media print {
    .search-section, .btn, .quantity-control button, #dark-mode-toggle { display: none; }
    body { background: white; color: black; }
    .container { max-width: 100%; }
    .cart-section { box-shadow: none; border: 1px solid #000; background: white; }
    .cart-item { border-color: #000; background: #f5f5f5; }
    header { background: white; }
}

/* Scrollbar styling */
.search-results::-webkit-scrollbar,
.cart-items::-webkit-scrollbar { width: 8px; }

.search-results::-webkit-scrollbar-track,
.cart-items::-webkit-scrollbar-track { background: var(--background); border-radius: 4px; }

.search-results::-webkit-scrollbar-thumb,
.cart-items::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 4px; }

.search-results::-webkit-scrollbar-thumb:hover,
.cart-items::-webkit-scrollbar-thumb:hover { background: var(--secondary-color); }