/* Delta Dynamics - Modern Design System */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
  /* ========================================
     COLOR PALETTE
     ======================================== */

  /* Navy/Dark Blues */
  --color-primary-dark: #001a4d;
  /* Deep navy blue - darkest */
  --color-primary-mid: #0047ab;
  /* Medium blue */
  --color-primary-bright: #0066ff;
  /* Bright blue */

  /* Cyan/Aqua (for gradients only) */
  --color-cyan-bright: #00d4ff;
  /* Aqua cyan */
  --color-cyan-light: #33e0ff;
  /* Light cyan */

  /* Primary Blue Shades - #0077ff family */
  --color-light-blue: #0077ff;
  /* Main bright blue (user selected) */
  --color-light-blue-bright: #3399ff;
  /* Lighter variant */

  /* Neutral Colors */
  --color-bg-dark: #0a0e1a;
  /* Dark background */
  --color-bg-darker: #050810;
  /* Darkest background */
  --color-white: #ffffff;
  /* Pure white */
  --color-gray-light: #e0e8f5;
  /* Light gray text */
  --color-gray-mid: #8a9ab5;
  /* Medium gray */

  /* Status Colors */
  --color-success: #00ff88;
  /* Success green */
  --color-danger: #ff3366;
  /* Error/danger red */

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary-bright), var(--color-cyan-bright));
  --gradient-hero: linear-gradient(180deg, var(--color-bg-darker) 0%, var(--color-primary-dark) 100%);
  --gradient-card: linear-gradient(135deg, rgba(0, 26, 77, 0.4), rgba(0, 102, 255, 0.2));
  --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 153, 255, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 153, 255, 0.2);
  --shadow-lg: 0 8px 32px rgba(0, 102, 255, 0.3);
  --shadow-glow: 0 0 20px rgba(0, 153, 255, 0.5);

  /* Typography - Apple System Font */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', 'Inter', system-ui, sans-serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  background: var(--color-bg-darker);
  background-image:
    radial-gradient(circle at 25% 25%, rgba(0, 102, 255, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 75% 75%, rgba(0, 212, 255, 0.02) 0%, transparent 50%);
  color: var(--color-white);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 10px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--gradient-primary);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-light-blue);
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 900;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-transform: uppercase;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--color-light-blue);
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--color-light-blue-bright);
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-gray-light);
}

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

/* Container */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(5, 8, 16, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 132, 255, 0.1);
  padding: var(--spacing-md) 0;
  transition: var(--transition-normal);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
  background: rgba(5, 8, 16, 0.95);
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.logo {
  height: 50px;
  width: auto;
  transition: var(--transition-normal);
  filter: drop-shadow(0 0 10px rgba(0, 119, 255, 0.3));
}

.logo:hover {
  filter: drop-shadow(0 0 20px rgba(0, 140, 255, 0.6));
  transform: scale(1.05);
}

.navbar-nav {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  align-items: center;
}

.nav-link {
  font-weight: 500;
  color: var(--color-gray-light);
  position: relative;
  padding: var(--spacing-xs) 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: var(--transition-normal);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-link:hover {
  color: var(--color-light-blue);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(0, 102, 255, 0.15) 0%, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(0, 212, 255, 0.12) 0%, transparent 45%),
    radial-gradient(circle at 50% 20%, rgba(0, 150, 255, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 10% 80%, rgba(0, 180, 255, 0.1) 0%, transparent 40%);
  animation: pulse 10s ease-in-out infinite;
  filter: blur(40px);
}

.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0, 212, 255, 0.02) 2px, rgba(0, 212, 255, 0.02) 3px),
    repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(0, 212, 255, 0.02) 2px, rgba(0, 212, 255, 0.02) 3px);
  background-size: 50px 50px;
  opacity: 0.3;
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }

  50% {
    opacity: 0.7;
    transform: scale(1.05);
  }
}

.hero-content {
  text-align: center;
  z-index: 1;
  max-width: 900px;
  animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-logo {
  max-width: 400px;
  width: 100%;
  height: auto;
  margin: 0 auto var(--spacing-xl);
  filter: drop-shadow(var(--shadow-glow));
  animation: float 6s ease-in-out infinite;
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0px);
  }

  50% {
    transform: translateY(-20px);
  }
}

.hero-title {
  margin-bottom: var(--spacing-md);
}

.hero-subtitle {
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  color: var(--color-gray-light);
  margin-bottom: var(--spacing-xl);
  font-weight: 300;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-xl);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: var(--transition-normal);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--gradient-glass);
  color: var(--color-white);
  border: 2px solid var(--color-light-blue);
}

.btn-secondary:hover {
  background: var(--color-light-blue);
  transform: translateY(-2px);
}

.btn-small {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: 0.9rem;
}

/* Section */
.section {
  padding: var(--spacing-2xl) 0;
  position: relative;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

/* Products Grid */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-2xl);
}

.product-card {
  background: var(--gradient-glass);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 153, 255, 0.2);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-normal);
  cursor: pointer;
  animation: fadeInUp 0.6s ease-out;
  animation-fill-mode: both;
}

.product-card:nth-child(1) {
  animation-delay: 0.1s;
}

.product-card:nth-child(2) {
  animation-delay: 0.2s;
}

.product-card:nth-child(3) {
  animation-delay: 0.3s;
}

.product-card:nth-child(4) {
  animation-delay: 0.4s;
}

.product-card:nth-child(5) {
  animation-delay: 0.5s;
}

.product-card:nth-child(6) {
  animation-delay: 0.6s;
}

.product-card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: var(--shadow-glow);
  border-color: var(--color-light-blue);
}

.product-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  background: var(--gradient-card);
  transition: var(--transition-normal);
}

.product-card:hover .product-image {
  transform: scale(1.1);
}

.product-image-container {
  overflow: hidden;
  position: relative;
}

.product-image-container::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: linear-gradient(to top, rgba(5, 8, 16, 0.8), transparent);
  pointer-events: none;
}

.product-body {
  padding: var(--spacing-lg);
}

.product-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-light-blue);
  margin-bottom: var(--spacing-sm);
}

.product-description {
  color: var(--color-gray-light);
  margin-bottom: var(--spacing-md);
  min-height: 60px;
  font-size: 0.95rem;
}

.product-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(0, 110, 255, 0.1);
}

.product-price {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Footer */
.footer {
  background: var(--color-bg-darker);
  border-top: 1px solid rgba(0, 119, 255, 0.1);
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.footer p {
  color: var(--color-gray-mid);
  margin: 0;
}

.footer a {
  color: var(--color-light-blue);
}

.footer a:hover {
  text-decoration: underline;
}

/* Admin Panel Styles */
.admin-container {
  max-width: 900px;
  margin: 0 auto;
  padding: var(--spacing-2xl) var(--spacing-lg);
  min-height: 100vh;
}

.admin-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
  padding-top: 60px;
}

.auth-container {
  max-width: 500px;
  margin: 100px auto;
  padding: var(--spacing-2xl);
  background: var(--gradient-glass);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 119, 255, 0.2);
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.auth-logo {
  max-width: 300px;
  margin: 0 auto var(--spacing-xl);
  filter: drop-shadow(var(--shadow-md));
}

.auth-container h2 {
  margin-bottom: var(--spacing-md);
}

.auth-container p {
  margin-bottom: var(--spacing-xl);
  color: var(--color-gray-mid);
}

.user-info {
  background: var(--gradient-glass);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 119, 255, 0.2);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.user-details {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.user-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: 2px solid var(--color-light-blue);
}

.form-group {
  margin-bottom: var(--spacing-lg);
  text-align: left;
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 700;
  color: var(--color-light-blue-bright);
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.5px;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--spacing-md);
  background: rgba(0, 26, 77, 0.3);
  border: 1px solid rgba(0, 119, 255, 0.2);
  border-radius: var(--radius-sm);
  color: var(--color-white);
  font-family: var(--font-primary);
  font-size: 1rem;
  transition: var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-light-blue);
  box-shadow: 0 0 0 3px rgba(0, 119, 255, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.admin-card {
  background: var(--gradient-glass);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 119, 255, 0.2);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  box-shadow: var(--shadow-md);
}

.admin-card h3 {
  margin-bottom: var(--spacing-lg);
}

.product-list-item {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: rgba(0, 26, 77, 0.2);
  border: 1px solid rgba(0, 212, 255, 0.1);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  transition: var(--transition-fast);
}

.product-list-item:hover {
  border-color: var(--color-light-blue);
  background: rgba(0, 26, 77, 0.3);
}

.product-list-image {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background: var(--gradient-card);
}

.product-list-info {
  flex: 1;
}

.product-list-title {
  font-weight: 600;
  color: var(--color-light-blue);
  margin-bottom: var(--spacing-xs);
}

.product-list-description {
  font-size: 0.9rem;
  color: var(--color-gray-mid);
  margin-bottom: var(--spacing-xs);
}

.btn-delete {
  background: transparent;
  color: var(--color-danger);
  border: 1px solid var(--color-danger);
  padding: var(--spacing-xs) var(--spacing-md);
  align-self: center;
}

.btn-delete:hover {
  background: var(--color-danger);
  color: var(--color-white);
}

.btn-edit {
  background: transparent;
  color: var(--color-light-blue);
  border: 1px solid var(--color-light-blue);
  padding: var(--spacing-xs) var(--spacing-md);
  align-self: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-normal);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.btn-edit:hover {
  background: var(--color-light-blue);
  color: var(--color-white);
}

.empty-state-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.3;
}

/* Loading Spinner */
.spinner {
  border: 3px solid rgba(0, 132, 255, 0.1);
  border-top: 3px solid var(--color-light-blue);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
  margin: var(--spacing-xl) auto;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .navbar-nav {
    gap: var(--spacing-md);
  }

  .products-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .hero-logo {
    max-width: 280px;
  }

  .container {
    padding: 0 var(--spacing-md);
  }

  .admin-container {
    padding: var(--spacing-lg) var(--spacing-md);
  }

  .auth-container {
    margin: 60px var(--spacing-md);
    padding: var(--spacing-lg);
  }

  .product-list-item {
    flex-direction: column;
  }

  .btn-delete {
    align-self: flex-start;
  }
}

@media (max-width: 480px) {
  .navbar-brand {
    font-size: 0.9rem;
  }

  .logo {
    height: 40px;
  }

  .navbar-nav {
    font-size: 0.85rem;
  }

  .user-info {
    flex-direction: column;
    text-align: center;
  }
}

/* Utility Classes */
.text-center {
  text-align: center;
}

.mt-1 {
  margin-top: var(--spacing-sm);
}

.mt-2 {
  margin-top: var(--spacing-md);
}

.mt-3 {
  margin-top: var(--spacing-lg);
}

.mb-1 {
  margin-bottom: var(--spacing-sm);
}

.mb-2 {
  margin-bottom: var(--spacing-md);
}

.mb-3 {
  margin-bottom: var(--spacing-lg);
}

.hidden {
  display: none !important;
}

.fade-in {
  animation: fadeInUp 0.6s ease-out;
}