/* ====== VARIABLES ====== */
:root {
  --primary-dark: #00aaff;       
  --primary-medium: #0088cc;     
  --primary-light: #e6f7ff;      

  --accent-gold: #ffaa00;        
  --accent-gold-light: #ffcc33;  

  --accent-orange: #ff7700;      
  --accent-orange-light: #ffaa66;

  --error-red: #ff0055;          
  --error-red-light: #ff336f;

  --success-green: #00cc88;      
  --warning-orange: #ffaa00;

  --neutral-white: #ffffff;
  --neutral-light: #f8f9fa;
  --neutral-medium: #e9ecef;
  --neutral-dark: #343a40;

  --text-dark: #2c3e50;
  --text-medium: #495057;
  --text-light: #6c757d;

  --shadow-light: rgba(0, 0, 0, 0.05);
  --shadow-medium: rgba(0, 0, 0, 0.12);
  --shadow-dark: rgba(0, 0, 0, 0.2);

  --overlay-light: rgba(0, 170, 255, 0.08);
  --overlay-medium: rgba(0,0,0,0.4);
  --overlay-dark: rgba(0,0,0,0.75);
}

/* ====== RESET & BASE STYLES ====== */
* { 
  margin:0; 
  padding:0;
  border: 0;
  outline:0; 
  box-sizing:border-box; 
  direction:rtl; 
  font-family: 'Tajawal', sans-serif; 
}

body { 
  background: var(--neutral-light);
  background-image: linear-gradient(rgba(0, 170, 255, 0.02) 10%, transparent 10%, transparent 100%);
  background-size: 100% 10px;
  color: var(--text-dark); 
  min-height:100vh; 
}

button {
  cursor: pointer;
  user-select: none;
}

input:focus,
select:focus {
  border: 2px solid var(--primary-dark) !important;
  transform: scale(1.01);
  transition: 0.2s;
  box-shadow: 0 0 0 3px rgba(0, 170, 255, 0.15);
}

/* ====== HEADER ====== */
.header {
  background: var(--neutral-white);      
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 65px;
  box-shadow: 0 2px 10px var(--shadow-light);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header h2 {
  color: var(--primary-dark);
  font-weight: 700;
}

.header #toggleCustomersList { 
  font-size: 1.5em; 
  background: transparent; 
  color: var(--primary-dark); 
  padding: 5px; 
  transition: transform 0.3s;
}

.header #toggleCustomersList:hover {
  transform: scale(1.1);
}

.header #searchBtnHeader { 
  color: var(--primary-dark);
  padding: 8px; 
  font-size: 1.5em;
  background-color: transparent;
}

/* ====== SIDEBAR CUSTOMERS LIST ====== */
.customersList {
  background-color: var(--neutral-white);
  position: fixed;
  top: 0; 
  right: -300px; 
  bottom: 0;
  width: 280px;
  padding: 20px;
  transition: right .3s ease-in-out;
  z-index: 100;
  height: 100vh;
  overflow-y: auto;
  box-shadow: -4px 0 15px var(--shadow-medium);
  border-left: 1px solid var(--neutral-medium);
}

.customersList.show { 
  right: 0;
}

.customersList h3 { 
  color: var(--text-dark); 
  text-align: center; 
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--neutral-medium);
}

.customersList .search-box {
  width: 100%;
  padding: 10px;
  margin-bottom: 15px;
  border: 2px solid var(--neutral-medium);
  border-radius: 8px;
}

.customersList #openAddCustomer { 
  width: 100%; 
  padding: 12px; 
  border-radius: 8px; 
  background: var(--primary-dark); 
  color: var(--neutral-white); 
  font-weight: bold; 
  margin-bottom: 15px; 
  box-shadow: 0 3px 6px rgba(0, 170, 255, 0.2);
}

.customersList #openAddCustomer:hover { 
  background: var(--primary-medium);
  transform: translateY(-1px);
}

.customersList .totalAll { 
  padding: 12px; 
  background: var(--primary-light);
  border: 1px solid var(--primary-dark);
  border-radius: 8px; 
  color: var(--primary-dark); 
  font-weight: bold; 
  text-align: center; 
  margin-bottom: 15px; 
}

.customersList .customer-container {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.customersList .customer {
  padding: 12px; 
  background-color: var(--neutral-light);
  border-radius: 8px;
  display: flex; 
  justify-content: space-between; 
  align-items: center;
  cursor: pointer; 
  transition: 0.2s;
  color: var(--text-dark);            
  border: 1px solid transparent;
}

.customersList .customer:hover,
.customersList .customer.active {
  background-color: var(--neutral-white); 
  border-color: var(--primary-dark);
  box-shadow: 0 3px 8px var(--shadow-light);
}

.customersList .customer.active {
  background-color: var(--primary-light);
}

.customer .actions {
  display: flex;
  gap: 4px;
}

.customer button { 
  padding: 4px 8px; 
  border-radius: 6px; 
  font-size: 0.85rem;
  color: var(--neutral-white);
  font-weight: bold;
}

.customer .btn-edit { background: var(--accent-gold); color: var(--neutral-dark); }
.customer .btn-delete { background: var(--error-red); }

.customersList span.name-span { 
  flex: 1;
  overflow: hidden; 
  text-overflow: ellipsis; 
  white-space: nowrap; 
  font-weight: 500;
}

/* ====== OVERLAY ====== */
.overlay {
  position: fixed; 
  inset: 0;
  background: var(--overlay-medium);
  display: none; 
  z-index: 90;
  backdrop-filter: blur(3px);
}

.overlay.active { 
  display: block; 
}

/* ====== CUSTOMER PAGE ====== */
.customerPage { 
  padding: 25px; 
  max-width: 800px;
  margin: 20px auto;
}

.customerPage h2.welcome-title {
  text-align: center;
  color: var(--text-light);
  margin-top: 50px;
}

.customerPage .customer-header-card { 
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-medium) 100%);
  color: var(--neutral-white); 
  padding: 20px; 
  border-radius: 12px;
  box-shadow: 0 4px 12px var(--shadow-medium);
  margin-bottom: 25px;
  text-align: center;
}

.customerPage .action-bar {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.customerPage .action-bar button { 
  padding: 10px 20px; 
  border-radius: 8px; 
  font-weight: bold; 
  box-shadow: 0 2px 4px var(--shadow-light);
}

#openAddProduct { background: var(--success-green); color: white; }
#customerPageToGrid { background: var(--accent-gold); color: var(--neutral-dark); }

.customerPage .pricesCalcs {
  font-size: 1.2rem;
  color: var(--text-dark); 
  font-weight: 700; 
  border: 2px dashed var(--primary-dark); 
  border-radius: 8px; 
  padding: 12px; 
  margin-bottom: 20px; 
  background: var(--neutral-white);
  text-align: center;
}

/* ====== PRODUCT STYLES ====== */
.product-list-wrapper {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.customerPage .product { 
  background: var(--neutral-white); 
  padding: 15px; 
  border-radius: 8px; 
  box-shadow: 0 2px 5px var(--shadow-light); 
  display: flex; 
  justify-content: space-between;
  align-items: center; 
  transition: 0.2s; 
  border-right: 4px solid var(--primary-dark);
}

.customerPage .product.active-product {
  border-right-color: var(--accent-gold);
  background: var(--neutral-light);
}    

.product span.date { 
  font-weight: bold; 
  color: var(--text-light);
  background: var(--neutral-medium);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.8em;
  margin-right: 10px;
}

.product .product-meta {
  display: flex;
  align-items: center;
}

.product .product-name-price {
  font-weight: 500;
}

.product .currency-badge {
  font-size: 0.8rem;
  padding: 2px 6px;
  border-radius: 4px;
  background-color: #fff3cd;
  color: #856404;
  margin-right: 5px;
}

.product .product-buttons {
  display: flex;
  gap: 6px;
}

.product button { 
  padding: 8px; 
  border-radius: 6px; 
  font-weight: bold;
  color: white;
}

.product .delete { background: var(--error-red); }
.product .edit { background: var(--accent-gold); color: var(--neutral-dark); }

/* ====== POPUP STYLES ====== */
.popup-modal {
  position: fixed; 
  top: 50%; 
  left: 50%;
  transform: translate(-50%,-50%);
  background: var(--neutral-white); 
  padding: 25px;
  border-radius: 12px; 
  box-shadow: 0 10px 30px var(--shadow-dark);
  display: none; 
  flex-direction: column; 
  z-index: 200;
  width: 320px;
}

.popup-modal label {
  font-weight: bold;
  margin-bottom: 5px;
  font-size: 0.9rem;
  color: var(--text-medium);
}

.popup-modal input, 
.popup-modal select { 
  margin-bottom: 15px; 
  padding: 10px; 
  border: 2px solid var(--neutral-medium); 
  border-radius: 8px; 
  background: var(--neutral-light);
  color: var(--text-dark);
}

.popup-modal .btn-submit { 
  background: var(--primary-dark); 
  color: white; 
  padding: 12px;
  border-radius: 8px;
  font-weight: bold;
}

.popup-modal .closePopup { 
  background: transparent;
  color: var(--text-light);
  margin-top: 8px;
  font-size: 0.9rem;
}

/* ====== CONFIRM MODAL ====== */
.confirm-modal { 
  position: fixed; 
  inset: 0;
  background: var(--overlay-medium); 
  display: none; 
  justify-content: center; 
  align-items: center; 
  z-index: 300; 
}

.confirm-box { 
  background: var(--neutral-white); 
  padding: 25px; 
  border-radius: 12px; 
  text-align: center; 
  box-shadow: 0 8px 25px var(--shadow-dark);
  width: 320px;
}

.confirm-buttons { 
  margin-top: 20px; 
  display: flex;
  justify-content: center;
  gap: 10px;
}

.confirm-buttons button { 
  padding: 10px 24px; 
  border-radius: 8px; 
  font-weight: bold;
  color: white;
}

.confirm-buttons .yes { background: var(--error-red); }
.confirm-buttons .no { background: var(--text-light); }

/* ====== SIGNUP STYLES ====== */
.signup-overlay {
  position: fixed; 
  inset: 0; 
  display: none; 
  z-index: 350;
  background: var(--overlay-medium);
  backdrop-filter: blur(6px);
}

.signup {
  display: none;
  position: fixed;
  top: 50%; 
  left: 50%;
  transform: translate(-50%,-50%);
  background: var(--neutral-white);
  padding: 30px;
  border-radius: 15px;
  border: 2px solid var(--primary-dark);
  text-align: center;
  z-index: 400;
  box-shadow: 0 10px 30px var(--shadow-dark);
  width: 350px;
}

.signup h2 { color: var(--primary-dark); margin-bottom: 15px; }
.signup .meta { font-size: 0.9rem; color: var(--text-medium); margin-bottom: 15px; line-height: 1.5; }

.copyNumber {
  background: var(--neutral-light); 
  padding: 12px; 
  border-radius: 8px; 
  margin: 10px 0; 
  direction: ltr;
  border: 1px solid var(--neutral-medium);
  font-weight: bold;
}

.signup input { 
  text-align: center; 
  font-size: 1.2em; 
  letter-spacing: 3px; 
  padding: 12px; 
  border: 2px solid var(--accent-gold); 
  border-radius: 10px; 
  margin-bottom: 15px; 
  color: var(--error-red); 
  font-weight: bold; 
  width: 100%; 
}

.signup button { 
  background: var(--primary-dark); 
  color: white; 
  padding: 12px; 
  border-radius: 10px; 
  font-weight: bold; 
  width: 100%; 
}

/* ====== ANIMATIONS ====== */
@keyframes shakeX {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-10px); }
  40%, 80% { transform: translateX(10px); }
}
.input-error { animation: shakeX 0.5s ease-in-out; border-color: var(--error-red) !important; }

.shake-badge { 
  color: var(--error-red); font-weight: 700; font-size: 0.85rem; margin-bottom: 10px; display: none;
}

/* ====== IMAGE OVERLAY ====== */
#imageOverlay {
  position: fixed; inset: 0; background: var(--overlay-dark); display: none; justify-content: center; align-items: center; z-index: 99999; backdrop-filter: blur(5px);
}
#overlayImage { max-width: 90%; max-height: 90%; border: 3px solid white; border-radius: 8px; }

@media (max-width: 480px) {
  .customersList { width: 260px; }
  .customerPage { padding: 15px; }
}

/* ====== شاشة التثبيت الإجبارية ====== */
.install-overlay {
  position: fixed;
  inset: 0;
  background: var(--neutral-light); /* خلفية صلبة لمنع رؤية التطبيق */
  z-index: 999999;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 20px;
}

.install-box {
  background: var(--neutral-white);
  padding: 30px;
  border-radius: 15px;
  box-shadow: 0 10px 30px var(--shadow-dark);
  max-width: 400px;
  border: 2px solid var(--primary-dark);
}

.install-box h2 {
  color: var(--primary-dark);
  margin-bottom: 15px;
}

.install-box p {
  color: var(--text-medium);
  margin-bottom: 20px;
  line-height: 1.6;
  font-weight: 500;
}

.install-box #installAppBtn {
  background: var(--success-green);
  color: white;
  padding: 12px 20px;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: bold;
  width: 100%;
  box-shadow: 0 4px 10px rgba(0, 204, 136, 0.3);
}

.install-box .ios-hint {
  background: #fff3cd;
  color: #856404;
  padding: 15px;
  border-radius: 8px;
  font-size: 0.95rem;
  margin-top: 15px;
  border: 1px solid #ffeeba;
}

/* السحر هنا: إذا كان التطبيق يعمل كـ Standalone (مثبت كـ PWA)،
  نخفي شاشة التثبيت تماماً ليظهر التطبيق الأساسي!
*/
@media all and (display-mode: standalone) {
  .install-overlay {
    display: none !important;
  }
}

/* ====== HOME DASHBOARD ====== */
.home-dashboard {
  display: flex;
  flex-direction: column;
  gap: 20px;
  animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.dashboard-buttons {
  display: flex;
  gap: 15px;
}

.dash-btn {
  flex: 1;
  padding: 18px 10px;
  border-radius: 12px;
  font-size: 1.1rem;
  font-weight: bold;
  color: var(--neutral-white);
  background: var(--primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  box-shadow: 0 4px 10px var(--shadow-light);
  transition: transform 0.2s, background 0.2s;
}

.dash-btn:hover {
  transform: translateY(-2px);
  background: var(--primary-medium);
}

.dash-btn.add-btn {
  background: var(--success-green);
}

.dash-btn.add-btn:hover {
  background: #00b377;
}

.dashboard-recent {
  background: var(--neutral-white);
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 2px 10px var(--shadow-light);
}

.dashboard-recent h3 {
  margin-bottom: 15px;
  color: var(--text-dark);
  font-size: 1.1rem;
  border-bottom: 2px solid var(--neutral-medium);
  padding-bottom: 10px;
}

.recent-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.recent-list li {
  padding: 15px;
  background: var(--neutral-light);
  border-radius: 8px;
  cursor: pointer;
  font-weight: 500;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.2s, color 0.2s;
  border: 1px solid transparent;
}

.recent-list li:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
  border-color: var(--primary-medium);
}

.dashboard-stats {
  background: linear-gradient(135deg, var(--accent-gold), var(--accent-orange));
  padding: 25px;
  border-radius: 12px;
  color: var(--neutral-white);
  text-align: center;
  box-shadow: 0 4px 12px var(--shadow-medium);
}

.dashboard-stats h3 {
  margin-bottom: 10px;
  font-size: 1.2rem;
  opacity: 0.9;
}

.dashboard-stats .stat-value {
  font-size: 2.2rem;
  font-weight: 700;
}