/* === Babalo Chem Shop - Pharmacy Management System === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --primary: #0B3D91;
    --primary-dark: #082b66;
    --accent: #A7C7E7;
    --accent-light: #d4e4f5;
    --success: #28a745;
    --warning: #ffc107;
    --danger: #dc3545;
    --info: #17a2b8;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    --gray-600: #6c757d;
    --gray-700: #495057;
    --gray-800: #343a40;
    --gray-900: #212529;
    --white: #ffffff;
    --sidebar-width: 250px;
    --topbar-height: 60px;
    --border-radius: 8px;
    --shadow: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-lg: 0 4px 20px rgba(0,0,0,0.12);
    --transition: all 0.3s ease;
}

html { font-size: 14px; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--gray-100);
    color: var(--gray-800);
    line-height: 1.6;
    min-height: 100vh;
}

/* === Login Page === */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary) 0%, #1a5bc7 50%, var(--accent) 100%);
}
.login-container { width: 100%; max-width: 420px; padding: 20px; }
.login-box {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    padding: 40px 30px;
}
.login-header { text-align: center; margin-bottom: 30px; }
.login-logo { margin-bottom: 15px; }
.logo-icon { font-size: 48px; color: var(--primary); }
.login-header h2 { color: var(--primary); margin-bottom: 5px; font-size: 24px; }
.login-header p { color: var(--gray-600); font-size: 14px; }
.login-form .form-group { margin-bottom: 20px; }

/* === App Layout === */
.app-layout { display: flex; min-height: 100vh; }

/* === Sidebar === */
.sidebar {
    width: var(--sidebar-width);
    background: var(--primary);
    color: var(--white);
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 100;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
    overflow-y: auto;
}
.sidebar-header {
    padding: 20px;
    text-align: center;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.sidebar-header h3 { font-size: 18px; margin-bottom: 5px; }
.sidebar-nav { flex: 1; padding: 10px 0; }
.sidebar-nav .nav-item {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    transition: var(--transition);
    font-size: 14px;
    gap: 10px;
}
.sidebar-nav .nav-item:hover { background: rgba(255,255,255,0.1); color: var(--white); }
.sidebar-nav .nav-item.active {
    background: rgba(255,255,255,0.15);
    color: var(--white);
    border-right: 3px solid var(--accent);
}
.sidebar-nav .nav-icon { font-size: 18px; width: 24px; text-align: center; }
.sidebar-nav .nav-logout { margin-top: auto; border-top: 1px solid rgba(255,255,255,0.1); }
.sidebar-user {
    padding: 15px 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 12px;
    text-align: center;
    opacity: 0.8;
}

/* === Main Content === */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    transition: var(--transition);
}

/* === Top Bar === */
.topbar {
    height: var(--topbar-height);
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    padding: 0 25px;
    gap: 15px;
    position: sticky;
    top: 0;
    z-index: 50;
    box-shadow: var(--shadow);
}
.topbar h2 { font-size: 16px; color: var(--gray-700); flex: 1; }
.topbar-right { display: flex; align-items: center; gap: 15px; }
.sidebar-toggle { display: none; background: none; border: none; font-size: 24px; cursor: pointer; color: var(--gray-600); }
.user-badge {
    background: var(--accent-light);
    color: var(--primary);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
}

/* === Content Wrapper === */
.content-wrapper { padding: 25px; }

/* === Cards === */
.card {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 20px;
    overflow: hidden;
}
.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
}
.card-header h2 { font-size: 16px; color: var(--gray-800); margin: 0; }
.card-body { padding: 20px; }

/* === Stats Cards === */
.stats-card {
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    color: var(--white);
    border: none;
}
.stats-card .stats-icon { font-size: 36px; opacity: 0.9; }
.stats-card .stats-body h3 { font-size: 24px; font-weight: 700; margin: 0; }
.stats-card .stats-body p { margin: 5px 0 0; opacity: 0.9; font-size: 13px; }

.bg-primary { background: linear-gradient(135deg, var(--primary), #1a5bc7); }
.bg-success { background: linear-gradient(135deg, #28a745, #34ce57); }
.bg-warning { background: linear-gradient(135deg, #e8a317, #ffc107); color: #333 !important; }
.bg-danger { background: linear-gradient(135deg, #dc3545, #e4606d); }
.bg-info { background: linear-gradient(135deg, #17a2b8, #3dd5f3); }

/* === Tables === */
.table { width: 100%; border-collapse: collapse; }
.table th {
    text-align: left;
    padding: 10px 12px;
    border-bottom: 2px solid var(--gray-200);
    font-size: 12px;
    text-transform: uppercase;
    color: var(--gray-600);
    letter-spacing: 0.5px;
    white-space: nowrap;
}
.table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--gray-200);
    vertical-align: middle;
}
.table tbody tr:hover { background: var(--gray-100); }
.table-responsive { overflow-x: auto; }

/* === Forms === */
.form-group { margin-bottom: 15px; }
.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: var(--gray-700);
    font-size: 13px;
}
.form-control {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    font-size: 14px;
    transition: var(--transition);
    background: var(--white);
    color: var(--gray-800);
}
.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(11,61,145,0.15);
}
.form-control-lg { padding: 14px 18px; font-size: 16px; }
select.form-control { cursor: pointer; }
textarea.form-control { resize: vertical; min-height: 80px; }

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    line-height: 1.4;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow); }
.btn:active { transform: translateY(0); }
.btn-primary { background: var(--primary); color: var(--white); }
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary { background: var(--gray-200); color: var(--gray-700); }
.btn-secondary:hover { background: var(--gray-300); }
.btn-success { background: var(--success); color: var(--white); }
.btn-warning { background: var(--warning); color: #333; }
.btn-danger { background: var(--danger); color: var(--white); }
.btn-info { background: var(--info); color: var(--white); }
.btn-outline-primary { background: transparent; border: 1px solid var(--primary); color: var(--primary); }
.btn-outline-primary:hover { background: var(--primary); color: var(--white); }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-lg { padding: 14px 28px; font-size: 16px; }
.btn-block { width: 100%; }
.btn-group { display: flex; gap: 5px; flex-wrap: wrap; }

/* === Badges === */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.badge-primary { background: var(--primary); color: var(--white); }
.badge-success { background: var(--success); color: var(--white); }
.badge-warning { background: var(--warning); color: #333; }
.badge-danger { background: var(--danger); color: var(--white); }
.badge-info { background: var(--info); color: var(--white); }
.badge-admin { background: var(--danger); color: var(--white); font-size: 10px; }
.badge-staff { background: var(--info); color: var(--white); font-size: 10px; }
.badge-secondary { background: var(--gray-500); color: var(--white); }
.badge-primary { background: var(--primary); color: var(--white); }

/* === Alerts === */
.alert {
    padding: 14px 18px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-size: 14px;
    border-left: 4px solid transparent;
}
.alert-success { background: #d4edda; color: #155724; border-color: var(--success); }
.alert-danger { background: #f8d7da; color: #721c24; border-color: var(--danger); }
.alert-info { background: #d1ecf1; color: #0c5460; border-color: var(--info); }

/* === Modal === */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    justify-content: center;
    align-items: flex-start;
    padding: 20px;
    overflow-y: auto;
}
.modal.active { display: flex; }
.modal-content {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 30px;
    width: 100%;
    max-width: 600px;
    margin-top: 50px;
    animation: slideDown 0.3s ease;
    box-shadow: var(--shadow-lg);
}
.modal-content.modal-sm { max-width: 450px; }
.modal-content.modal-lg { max-width: 800px; }
.modal-close {
    float: right;
    font-size: 28px;
    cursor: pointer;
    color: var(--gray-500);
    transition: var(--transition);
    line-height: 1;
}
.modal-close:hover { color: var(--gray-700); }
.modal-content h2 { margin-bottom: 20px; color: var(--primary); }

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* === POS Layout === */
.pos-layout {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 20px;
    align-items: start;
}
.pos-left .card-body { padding: 15px; }
.pos-right .card-body { padding: 15px; }

.search-results {
    max-height: 250px;
    overflow-y: auto;
    border: 1px solid var(--gray-200);
    border-radius: 6px;
    display: none;
}
.search-results.active { display: block; }
.search-result-item {
    padding: 10px 14px;
    cursor: pointer;
    border-bottom: 1px solid var(--gray-100);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}
.search-result-item:hover { background: var(--accent-light); }
.search-result-item:last-child { border-bottom: none; }

.cart-summary {
    margin-top: 15px;
    padding: 15px;
    background: var(--gray-100);
    border-radius: 6px;
}
.cart-total, .cart-count {
    display: flex;
    justify-content: space-between;
    font-size: 16px;
    font-weight: 600;
}
.cart-total { font-size: 20px; color: var(--primary); margin-bottom: 5px; }

.change-display {
    font-size: 28px;
    font-weight: 700;
    color: var(--success);
    text-align: center;
    padding: 10px;
    background: var(--gray-100);
    border-radius: 6px;
}

.quick-categories { display: flex; flex-wrap: wrap; gap: 5px; }
.quick-actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* === Grid System === */
.row { display: flex; flex-wrap: wrap; margin: 0 -10px; }
.row > [class*="col-"] { padding: 0 10px; }
.col-md-1 { flex: 0 0 8.33%; max-width: 8.33%; }
.col-md-2 { flex: 0 0 16.66%; max-width: 16.66%; }
.col-md-3 { flex: 0 0 25%; max-width: 25%; }
.col-md-4 { flex: 0 0 33.33%; max-width: 33.33%; }
.col-md-5 { flex: 0 0 41.66%; max-width: 41.66%; }
.col-md-6 { flex: 0 0 50%; max-width: 50%; }
.col-md-7 { flex: 0 0 58.33%; max-width: 58.33%; }
.col-md-8 { flex: 0 0 66.66%; max-width: 66.66%; }
.col-md-9 { flex: 0 0 75%; max-width: 75%; }
.col-md-10 { flex: 0 0 83.33%; max-width: 83.33%; }
.col-md-12 { flex: 0 0 100%; max-width: 100%; }

/* === Utility === */
.mt-2 { margin-top: 10px; }
.mt-3 { margin-top: 15px; }
.mt-4 { margin-top: 20px; }
.mb-2 { margin-bottom: 10px; }
.mb-3 { margin-bottom: 15px; }
.mb-4 { margin-bottom: 20px; }
.text-center { text-align: center; }

/* === Responsive === */
@media (max-width: 1024px) {
    .pos-layout { grid-template-columns: 1fr; }
    .col-md-3 { flex: 0 0 50%; max-width: 50%; }
    .col-md-4 { flex: 0 0 50%; max-width: 50%; }
    .table th, .table td { padding: 8px 10px; }
}

@media (max-width: 768px) {
    .sidebar-overlay {
        display: none;
        position: fixed;
        top: 0; left: 0; right: 0; bottom: 0;
        background: rgba(0,0,0,0.5);
        z-index: 99;
    }
    .sidebar-overlay.active { display: block; }
    .sidebar {
        transform: translateX(-100%);
        width: 260px;
    }
    .sidebar.open {
        transform: translateX(0);
        box-shadow: 4px 0 20px rgba(0,0,0,0.3);
    }
    .sidebar-toggle { display: block; }
    .main-content { margin-left: 0; }
    .content-wrapper { padding: 15px; }
    .col-md-2, .col-md-3, .col-md-4, .col-md-6 { flex: 0 0 100%; max-width: 100%; }
    .stats-card { padding: 14px; min-height: auto; }
    .stats-card .stats-body h3 { font-size: 18px; }
    .card-header { flex-direction: column; align-items: flex-start; }
    .card-body { padding: 15px; }
    .login-container { padding: 15px; }
    .login-box { padding: 25px 20px; }
    .modal-content { margin-top: 10px; padding: 20px; max-width: 100% !important; border-radius: 8px; }
    .modal { padding: 10px; align-items: flex-start; }
    .quick-actions .btn { width: 100%; }
    .btn-group { flex-direction: column; width: 100%; }
    .btn-group .btn { width: 100%; text-align: center; }
    .table { font-size: 12px; }
    .table th, .table td { padding: 6px 8px; white-space: normal; word-break: break-word; }
    .table th { white-space: nowrap; font-size: 10px; }
    .form-control { font-size: 16px; padding: 12px 14px; }
    select.form-control { font-size: 16px; }
    .btn { padding: 12px 16px; min-height: 44px; }
    .btn-sm { padding: 8px 12px; min-height: 36px; font-size: 13px; }
    .topbar { padding: 0 12px; height: 56px; }
    .topbar h2 { font-size: 14px; }
    .user-badge { font-size: 11px; padding: 4px 10px; }
    .pos-layout { grid-template-columns: 1fr; }
    .pos-right .card-body { padding: 12px; }
    .change-display { font-size: 22px; padding: 8px; }
    .quick-categories { gap: 4px; }
    .quick-categories .btn { font-size: 12px; padding: 6px 10px; min-height: auto; }
}

@media (max-width: 480px) {
    html { font-size: 13px; }
    .content-wrapper { padding: 10px; }
    .topbar { padding: 0 10px; height: 50px; }
    .topbar h2 { font-size: 13px; }
    .sidebar { width: 240px; }
    .stats-card .stats-body h3 { font-size: 16px; }
    .card-header h2 { font-size: 14px; }
    .modal-content { padding: 15px; margin-top: 5px; }
    .table { font-size: 11px; }
    .table th, .table td { padding: 5px 6px; }
    .form-group { margin-bottom: 12px; }
    .alert { font-size: 13px; padding: 10px 14px; }
}

/* === PWA enhancements === */
@supports (padding-top: env(safe-area-inset-top)) {
    .sidebar { padding-top: env(safe-area-inset-top); }
    .topbar { padding-top: env(safe-area-inset-top); height: calc(var(--topbar-height) + env(safe-area-inset-top)); }
    .main-content { padding-bottom: env(safe-area-inset-bottom); }
    .modal-content { margin-top: calc(env(safe-area-inset-top) + 50px); }
}
@media (display-mode: standalone) {
    .sidebar { padding-top: env(safe-area-inset-top); }
    .topbar { padding-top: calc(env(safe-area-inset-top) + 4px); }
}
body { overscroll-behavior-y: contain; -webkit-overflow-scrolling: touch; }
input, select, textarea, button { border-radius: 6px; }
a, button, .nav-item, .search-result-item { -webkit-tap-highlight-color: transparent; }
* { -webkit-touch-callout: none; }