@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;700&display=swap');

/* --- Theme Variables --- */
:root {
  /* Dark Palette (Default) */
  --bg-color: #05070a;
  --card-bg: rgba(30, 41, 59, 0.7);
  --accent-primary: #10b981;
  --accent-secondary: #0ea5e9;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --danger: #f43f5e;
  --glass-border: rgba(255, 255, 255, 0.1);
  --input-bg: rgba(15, 23, 42, 0.5);
  --cart-item-bg: rgba(15, 23, 42, 0.3);
  --shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

body.light-theme {
  /* Light Palette */
  --bg-color: #f1f5f9;
  --card-bg: rgba(255, 255, 255, 0.8);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --glass-border: rgba(15, 23, 42, 0.08);
  --input-bg: rgba(255, 255, 255, 0.9);
  --cart-item-bg: rgba(255, 255, 255, 0.5);
  --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
}

/* --- Base Styles --- */
* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }

body {
  font-family: 'Outfit', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow-x: hidden;
  transition: background-color 0.3s, color 0.3s;
}

.container { width: 100%; max-width: 500px; padding: 16px; display: flex; flex-direction: column; gap: 20px; }

/* --- Glassmorphism --- */
.glass-card {
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 24px;
  box-shadow: var(--shadow);
  transition: background-color 0.3s, border-color 0.3s;
}

/* --- Auth Screen --- */
.auth-screen {
  position: fixed;
  inset: 0;
  background: var(--bg-color);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  transition: 0.5s;
}
.auth-screen.hidden { opacity: 0; visibility: hidden; }

.logo-container { text-align: center; margin-bottom: 40px; }
.logo-container h1 {
  font-size: 2.5rem;
  background: linear-gradient(to right, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.pin-input { display: flex; gap: 12px; margin-bottom: 24px; transition: transform 0.1s; }
.pin-dot { width: 16px; height: 16px; border-radius: 50%; border: 2px solid var(--accent-primary); }
.pin-dot.filled { background: var(--accent-primary); transform: scale(1.2); }

.keypad { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.key {
  width: 70px; height: 70px; border-radius: 50%;
  background: var(--card-bg); border: 1px solid var(--glass-border);
  display: flex; justify-content: center; align-items: center;
  font-size: 1.5rem; cursor: pointer; color: var(--text-primary);
}
.key:active { background: var(--accent-primary); color: white; transform: scale(0.9); }

/* --- Header & Theme Toggle --- */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 10px;
}
.header-actions { display: flex; align-items: center; gap: 12px; }

.theme-btn {
  background: var(--card-bg);
  border: 1px solid var(--glass-border);
  width: 40px; height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  color: var(--text-primary);
  font-size: 1.2rem;
}

.user-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--card-bg);
  padding: 6px 12px;
  border-radius: 100px;
  font-size: 0.85rem;
  border: 1px solid var(--glass-border);
}
.badge-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent-primary); }

/* --- Main Elements --- */
.category-toggle { display: flex; background: rgba(0,0,0,0.1); border-radius: 14px; padding: 4px; border: 1px solid var(--glass-border); }
.category-btn {
  flex: 1; padding: 10px; border: none; background: transparent;
  color: var(--text-secondary); font-weight: 600; cursor: pointer; border-radius: 10px;
}
.category-btn.active { background: var(--accent-primary); color: white; }

.form-group { margin-bottom: 20px; }
.label-row { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 8px; }

.input-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
select, input {
  width: 100%; padding: 12px; border-radius: 12px;
  background: var(--input-bg); border: 1px solid var(--glass-border);
  color: var(--text-primary); outline: none; transition: 0.2s;
}
select:focus, input:focus { border-color: var(--accent-primary); }
input.invalid { border-color: var(--danger); }

.mesh-info { font-size: 0.75rem; color: var(--accent-secondary); background: rgba(14,165,233,0.1); padding: 8px; border-radius: 10px; margin-top: 8px; }

.btn-primary {
  width: 100%; padding: 16px; border-radius: 16px; border: none;
  background: linear-gradient(135deg, var(--accent-primary), #059669);
  color: white; font-weight: 700; cursor: pointer; transition: 0.2s;
}
.btn-primary:active { transform: scale(0.98); }
.btn-primary.success { background: var(--accent-primary); }

/* --- Cart Items --- */
.cart-item {
  background: var(--cart-item-bg); border-radius: 16px; padding: 16px;
  margin-bottom: 12px; border: 1px solid var(--glass-border);
  display: flex; justify-content: space-between; align-items: center;
  animation: slideIn 0.3s;
}
@keyframes slideIn { from { opacity: 0; transform: translateY(10px); } }
.cart-item-info h4 { font-size: 0.9rem; margin-bottom: 4px; }
.cart-item-info p { font-size: 0.75rem; color: var(--text-secondary); }
.cart-item-price { color: var(--accent-primary); font-weight: 700; display: flex; align-items: center; }
.remove-btn { color: var(--danger); background: none; border: none; cursor: pointer; margin-left:12px; font-size:1.1rem; }

/* --- Modals --- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.8);
  backdrop-filter: blur(8px);
  display: none; justify-content: center; align-items: flex-start; padding: 20px; z-index: 2000;
}
.modal-overlay.active { display: flex; }
.modal-content { 
  background: var(--bg-color); width: 100%; max-width: 450px; border-radius: 32px; 
  padding: 32px; border: 1px solid var(--glass-border); box-shadow: 0 20px 50px rgba(0,0,0,0.5);
}

.total-row { border-top: 1px solid var(--glass-border); margin-top: 20px; padding-top: 20px; display: flex; justify-content: space-between; align-items: center; }
.grand-total { font-size: 1.8rem; font-weight: 800; color: var(--accent-primary); }

.share-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 20px; }
.btn-share { padding: 12px; border-radius: 12px; border: none; color: white; font-weight: 600; cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 6px; }
.btn-share.tg { background: #229ED9; }
.btn-share.wa { background: #25D366; }
.btn-share.copy { background: #6366f1; }
.btn-share.print { background: #64748b; }
.btn-share.group { background: #4f46e5; grid-column: span 2; margin-top: 8px; }

.btn-outline {
  width: 100%; margin-top: 20px; background: transparent; 
  border: 1px solid var(--glass-border); color: var(--text-secondary); 
  border-radius: 12px; padding: 12px; cursor: pointer; font-weight: 600;
}

@media print {
  body { background: white !important; color: black !important; }
  .container, .auth-screen, .theme-btn, #logoutBtn, #logoutBtn, .header-actions { display: none !important; }
  .modal-overlay { position: static; display: block; background: white !important; backdrop-filter: none; padding: 0; }
  .modal-content { 
    box-shadow: none !important; border: none !important; 
    max-width: 100%; width: 100%; padding: 0; 
    background: white !important; color: black !important;
  }
  .print-header { display: block !important; }
  .modal-content * { color: black !important; background: transparent !important; border-color: #ddd !important; }
  .share-grid, .btn-outline, #closeModal { display: none !important; }
  .grand-total { color: black !important; font-size: 2rem; }
  .glass-card { border: none !important; background: transparent !important; }
}