:root {
  --primary: #00c853; /* Vivid Green */
  --primary-dark: #007e33; /* Deep Green */
  --background: #121212; /* Dark background */
  --surface: #1e1e1e; /* Surface panels */
  --card: #212121; /* Glossy card surface */
  --text-primary: #ffffff; /* White text */
  --text-secondary: #bbbbbb; /* Light grey text */
  --accent: #00e676; /* Neon Green Accent */
  --border: rgba(255, 255, 255, 0.08);
  --shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
  --transition: all 0.3s ease;
}

/* ===== BASE RESET & TYPOGRAPHY ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Poppins", sans-serif;
  background-color: var(--background);
  color: var(--text-primary);
  margin: 0;
  padding-top: 140px; /* Account for fixed navbars */
  line-height: 1.6;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
}

/* ===== NAVIGATION STYLES ===== */

/* 🔹 Main Navbar */
#main-navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  background-color: var(--surface);
  box-shadow: var(--shadow);
  z-index: 1000;
  border-bottom: 1px solid var(--border);
  height: 70px;
  backdrop-filter: blur(10px);
}

#nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

#nav-logo {
  font-size: 1.4rem;
  font-weight: bold;
  color: var(--primary);
  transition: var(--transition);
}

#nav-logo:hover {
  color: var(--accent);
  text-shadow: 0 0 10px var(--accent);
}

#nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

#nav-links li a {
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 8px;
  transition: var(--transition);
  color: var(--text-primary);
  position: relative;
  overflow: hidden;
}

#nav-links li a::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.1),
    transparent
  );
  transition: left 0.5s;
}

#nav-links li a:hover::before {
  left: 100%;
}

#nav-links li a:hover,
#nav-links li a:focus {
  background-color: var(--primary-dark);
  color: var(--text-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(0, 200, 83, 0.3);
}

/* 🍔 Hamburger Menu */
#hamburger {
  display: none;
  font-size: 2rem;
  cursor: pointer;
  color: var(--text-primary);
  background: none;
  border: none;
  z-index: 1001;
  transition: var(--transition);
  padding: 5px;
  border-radius: 5px;
}

#hamburger:hover {
  background-color: var(--primary-dark);
  color: var(--accent);
}

/* 🔸 Toolbar Navbar */
.toolbar-navbar {
  position: fixed;
  top: 70px;
  left: 0;
  right: 0;
  width: 100%;
  background-color: var(--surface);
  color: var(--text-primary);
  box-shadow: var(--shadow);
  z-index: 999;
  padding: 1rem 2rem;
  border-bottom: 1px solid var(--border);
  height: 70px;
  backdrop-filter: blur(10px);
}

.nav-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  max-width: 1200px;
  margin: 0 auto;
  height: 100%;
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
}

.nav-center {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 1 1 auto;
  justify-content: center;
  flex-wrap: wrap;
}

.nav-center label {
  font-weight: 500;
  color: var(--text-secondary);
}

.nav-center select {
  padding: 0.5rem 1rem;
  font-size: 1rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background-color: var(--card);
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition);
  min-width: 150px;
}

.nav-center select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(0, 200, 83, 0.2);
}

.nav-center select:hover {
  border-color: var(--accent);
}

.nav-action {
  flex-shrink: 0;
}

.nav-action .btn {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: var(--text-primary);
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.nav-action .btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: left 0.5s;
}

.nav-action .btn:hover::before {
  left: 100%;
}

.nav-action .btn:hover {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 200, 83, 0.4);
}

/* ===== MAIN CONTENT ===== */
.main-content {
  padding: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

/* ===== BUTTONS ===== */
.btn-edit,
.btn-delete {
  padding: 10px 16px;
  font-size: 0.9rem;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  margin: 4px;
  transition: var(--transition);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  position: relative;
  overflow: hidden;
}

.btn-edit {
  background: linear-gradient(135deg, var(--accent), var(--primary));
  color: var(--background);
}

.btn-edit:hover {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--text-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(0, 230, 118, 0.4);
}

.btn-delete {
  background: linear-gradient(135deg, #ff5252, #ff1744);
  color: var(--text-primary);
}

.btn-delete:hover {
  background: linear-gradient(135deg, #ff1744, #d50000);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(255, 82, 82, 0.4);
}

/* ===== PRODUCT TABLE ===== */
.products-list {
  margin-top: 2rem;
  overflow-x: auto;
  border-radius: 12px;
  box-shadow: var(--shadow);
}

table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--card);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

th,
td {
  padding: 1rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

th {
  background: linear-gradient(135deg, var(--surface), var(--card));
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 0.9rem;
  color: var(--accent);
}

tr:hover td {
  background-color: rgba(255, 255, 255, 0.02);
}

td img {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: 10px;
  border: 2px solid var(--border);
  transition: var(--transition);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

td img:hover {
  transform: scale(1.05);
  border-color: var(--accent);
  box-shadow: 0 4px 15px rgba(0, 230, 118, 0.3);
}

/* ===== EXPIRY STATUS ===== */
.safe {
  color: #00e676;
  font-weight: bold;
  text-shadow: 0 0 10px rgba(0, 230, 118, 0.3);
}

.expiring {
  color: #ff9800;
  font-weight: bold;
  text-shadow: 0 0 10px rgba(255, 152, 0, 0.3);
}

.expired {
  color: #f44336;
  font-weight: bold;
  text-shadow: 0 0 10px rgba(244, 67, 54, 0.3);
}

.danger {
  color: #ff5252;
  font-weight: bold;
  text-shadow: 0 0 10px rgba(255, 82, 82, 0.3);
}

.empty {
  text-align: center;
  margin-top: 3rem;
  font-size: 1.2rem;
  color: var(--text-secondary);
  font-style: italic;
}

/* ===== GENERIC BUTTONS ===== */
#btn,
#btn-outline {
  display: inline-block;
  padding: 12px 24px;
  margin: 5px;
  border-radius: 8px;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  position: relative;
  overflow: hidden;
}

#btn {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: var(--text-primary);
  border: none;
  box-shadow: 0 4px 15px rgba(0, 200, 83, 0.3);
}

#btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: left 0.5s;
}

#btn:hover::before {
  left: 100%;
}

#btn:hover {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  transform: translateY(-3px);
  box-shadow: 0 6px 25px rgba(0, 230, 118, 0.4);
}

#btn-outline {
  border: 2px solid var(--primary);
  color: var(--primary);
  background: transparent;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

#btn-outline:hover {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: var(--text-primary);
  transform: translateY(-3px);
  box-shadow: 0 6px 25px rgba(0, 200, 83, 0.4);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
  body {
    padding-top: 70px; /* Only main navbar on mobile */
  }

  #hamburger {
    display: block;
  }

  #nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    width: 100%;
    background: var(--surface);
    flex-direction: column;
    align-items: flex-start;
    display: none;
    padding: 20px;
    box-shadow: var(--shadow);
    z-index: 1001;
    max-height: calc(100vh - 70px);
    overflow-y: auto;
    backdrop-filter: blur(15px);
  }

  #nav-links.show {
    display: flex;
    animation: slideDown 0.3s ease-out;
  }

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

  #nav-links li {
    width: 100%;
    margin: 5px 0;
  }

  #nav-links li a {
    display: block;
    width: 100%;
    padding: 12px 16px;
    border-radius: 8px;
  }

  .toolbar-navbar {
    position: relative;
    top: 0;
    z-index: 998;
    height: auto;
    padding: 1rem;
    border-top: 1px solid var(--border);
  }

  .nav-container {
    flex-direction: column;
    align-items: center;
    gap: 0.8rem;
    height: auto;
    padding: 0.8rem 1rem;
  }

  .nav-logo {
    font-size: 1.2rem;
    text-align: center;
  }

  .nav-center {
    justify-content: center;
    margin: 0.5rem 0;
    width: 100%;
  }

  .nav-center label {
    font-size: 0.9rem;
    margin-bottom: 0.3rem;
  }

  .nav-center select {
    font-size: 0.9rem;
    padding: 0.6rem 1rem;
    width: 100%;
    max-width: 300px;
  }

  .nav-action {
    align-self: center;
  }

  .nav-action .btn {
    font-size: 0.9rem;
    padding: 10px 16px;
  }

  .main-content {
    padding: 1rem;
  }

  table {
    font-size: 0.9rem;
  }

  th,
  td {
    padding: 0.8rem 0.5rem;
  }

  td img {
    width: 60px;
    height: 60px;
  }
}

/* ===== EXTRA SMALL DEVICES ===== */
@media (max-width: 480px) {
  #nav-container {
    padding: 0 15px;
  }

  .nav-container {
    padding: 0.5rem 0.8rem;
  }

  .main-content {
    padding: 0.8rem;
  }

  th,
  td {
    padding: 0.5rem 0.3rem;
    font-size: 0.7rem;
  }

 
  td img {
    width: 50px;
    height: 50px;
  }

  .btn-edit,
  .btn-delete {
    padding: 8px 12px;
    font-size: 0.7rem;
    margin: 2px;
  }

  #btn,
  #btn-outline {
    padding: 10px 16px;
    font-size: 0.9rem;
  }
}

/* ===== SCROLLBAR STYLING ===== */
::-webkit-scrollbar {
  width: 4px;
  height: 4px;
}

::-webkit-scrollbar-track {
  background: var(--background);
}

::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

/* ===== LOADING ANIMATION ===== */
@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.loading {
  animation: pulse 2s infinite;
}

/* ===== UTILITY CLASSES ===== */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.mb-1 {
  margin-bottom: 1rem;
}
.mb-2 {
  margin-bottom: 2rem;
}
.mt-1 {
  margin-top: 1rem;
}
.mt-2 {
  margin-top: 2rem;
}

.hidden {
  display: none;
}

.visible {
  display: block;
}