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

:root {
  --primary-color: #DC2626;
  --primary-dark: #991B1B;
  --secondary-color: #B91C1C;
  --accent-color: #F97316;
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --background: #F8FAFC;
  --surface: #FFFFFF;
  --border: #E2E8F0;
  --error: #ef4444;
  --success: #10B981;       /* Emerald */
  --warning: #d97706;
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.3), 0 1px 2px 0 rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);

  /* Nova Essence theme variables */
  --grid-pattern: repeating-linear-gradient(
    0deg,
    var(--surface) 0px,
    var(--surface) 19px,
    var(--border) 19px,
    var(--border) 20px
  );
  --molecule-pattern: radial-gradient(
    circle at 50% 50%,
    var(--primary-color) 1px,
    transparent 1px
  ) 0 0/20px 20px;
  --accent-gradient: linear-gradient(120deg, #DC2626, #991B1B);
}

/* Scientific Backgrounds */
.scientific-bg {
  background-color: var(--surface);
  background-image: var(--grid-pattern);
  position: relative;
}

.molecule-bg {
  background-image: var(--molecule-pattern);
  opacity: 0.1;
}

/* Card Enhancements */
.card {
  background: linear-gradient(145deg, var(--background), var(--surface));
  border: 1px solid rgba(220, 38, 38, 0.14);
}

.card-header {
  border-bottom: 2px solid var(--primary-color);
  background: linear-gradient(to right, var(--surface), white);
}

/* Scientific Elements */
.data-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  padding: 1rem;
  background: var(--surface);
  border-radius: 0.5rem;
  border: 1px solid var(--border);
}

.data-point {
  padding: 1rem;
  background: white;
  border-radius: 0.5rem;
  border: 1px solid rgba(220, 38, 38, 0.2);
  transition: transform 0.2s;
}

.data-point:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* Scientific Typography */
.formula {
  font-family: "Courier New", monospace;
  background: var(--surface);
  padding: 0.5rem 1rem;
  border-radius: 0.25rem;
  border-left: 3px solid var(--primary-color);
}

/* Enhanced Buttons */
.btn-primary {
  background: var(--accent-gradient);
  border: none;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(90deg, #991B1B, #DC2626);
  box-shadow: 0 0 12px rgba(220,38,38,0.4);
  transform: translateY(-1px);
}

/* Navigation Enhancements */
.navbar {
  background: rgba(69, 10, 10, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

/* Dashboard Elements */
.stat-card {
  background: rgba(255,255,255,0.05);
  border-radius: 1rem;
  padding: 1.5rem;
  border: 1px solid rgba(255,255,255,0.08);
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,0,0,0.25);
  transition: all 0.3s ease;
}

.stat-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 24px rgba(0,0,0,0.35);
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--accent-gradient);
}

/* Scientific Loaders */
.loader-dna {
  width: 64px;
  height: 64px;
  border: 4px solid var(--primary-color);
  border-radius: 50%;
  border-top-color: transparent;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Reset and Base Styles */
/* :root {
  --primary-color: #dc2626;
  --primary-dark: #991b1b;
  --secondary-color: #10b981;
  --accent-color: #f59e0b;
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --background: #ffffff;
  --surface: #f9fafb;
  --border: #e5e7eb;
  --error: #ef4444;
  --success: #10b981;
  --warning: #f59e0b;
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
} */

body {
  font-family: 'Poppins', sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--background);
  opacity: 0;
  transition: opacity 0.8s ease;
}

body.loaded {
  opacity: 1;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 0.5rem;
  letter-spacing: 0.3px;
}

h1 {
  font-size: 2.5rem;
}
h2 {
  font-size: 2rem;
}
h3 {
  font-size: 1.5rem;
}
h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--primary-dark);
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.main-content {
  min-height: calc(100vh - 140px);
  padding-top: 80px;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  z-index: 1000;
  height: 70px;
}

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

.nav-brand a {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

.nav-brand i {
  font-size: 1.8rem;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  transition: all 0.2s;
  color: var(--text-primary);
}

.nav-link:hover {
  background-color: rgba(255,255,255,0.05);
  color: #f97316;
  text-shadow: 0 0 8px #f97316;
}

.nav-link.btn-primary {
  background-color: var(--primary-color);
  color: white;
}

.nav-link.btn-primary:hover {
  background-color: var(--primary-dark);
  color: white;
}

/* Dropdown */
.nav-dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  background: white;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  box-shadow: var(--shadow-lg);
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.2s;
}

.nav-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu a {
  display: block;
  padding: 0.75rem 1rem;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border);
}

.dropdown-menu a:last-child {
  border-bottom: none;
}

.dropdown-menu a:hover {
  background-color: var(--surface);
}

.dropdown-divider {
  height: 1px;
  background-color: var(--border);
  margin: 0.5rem 0;
}

/* Mobile Navigation */
.nav-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 4px;
}

.nav-toggle span {
  width: 25px;
  height: 3px;
  background-color: var(--text-primary);
  transition: 0.3s;
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: white;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding-top: 2rem;
    transition: left 0.3s;
  }

  .nav-menu.active {
    left: 0;
  }

  .nav-link {
    width: 90%;
    justify-content: center;
  }
}

/* Flash Messages */
.flash-messages {
  position: fixed;
  top: 80px;
  right: 1rem;
  z-index: 1001;
  max-width: 400px;
}

.alert {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
  margin-bottom: 0.5rem;
  border-radius: 0.5rem;
  box-shadow: var(--shadow);
  animation: slideIn 0.3s ease-out;
}

.alert-success {
  background-color: #d1fae5;
  color: #065f46;
  border-left: 4px solid var(--success);
}

.alert-error {
  background-color: #fee2e2;
  color: #991b1b;
  border-left: 4px solid var(--error);
}

.alert-info {
  background-color: #dbeafe;
  color: #991b1b;
  border-left: 4px solid var(--primary-color);
}

.alert-warning {
  background-color: #fef3c7;
  color: #92400e;
  border-left: 4px solid var(--warning);
}

.alert-close {
  background: none;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  opacity: 0.7;
}

.alert-close:hover {
  opacity: 1;
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 0.5rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s;
  font-size: 0.875rem;
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
}

.btn-primary:hover {
  background-color: var(--primary-dark);
  color: white;
}

.btn-secondary {
  background-color: var(--surface);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background-color: var(--border);
}

.btn-success {
  background-color: var(--success);
  color: white;
}

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

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.75rem;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1rem;
}

/* Forms */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-primary);
}

.form-control {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  font-size: 0.875rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.form-control.error {
  border-color: var(--error);
}

.form-text {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

.form-error {
  color: var(--error);
  font-size: 0.75rem;
  margin-top: 0.25rem;
}

/* Cards */
.card {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 0.75rem;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card-header {
  padding: 1.5rem;
  border-bottom: 2px solid var(--primary-color);
  background: linear-gradient(to right, var(--surface), white);
}

.card-body {
  padding: 1.5rem;
  color: var(--text-primary);
}

.card-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border);
  background-color: var(--surface);
}

/* Grid */
.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-cols-1 {
  grid-template-columns: repeat(1, 1fr);
}
.grid-cols-2 {
  grid-template-columns: repeat(2, 1fr);
}
.grid-cols-3 {
  grid-template-columns: repeat(3, 1fr);
}
.grid-cols-4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 768px) {
  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: 1fr;
  }
}

/* Utilities */
.text-center {
  text-align: center;
}
.text-left {
  text-align: left;
}
.text-right {
  text-align: right;
}

.mt-1 {
  margin-top: 0.25rem;
}
.mt-2 {
  margin-top: 0.5rem;
}
.mt-3 {
  margin-top: 0.75rem;
}
.mt-4 {
  margin-top: 1rem;
}
.mt-5 {
  margin-top: 1.25rem;
}
.mt-6 {
  margin-top: 1.5rem;
}

.mb-1 {
  margin-bottom: 0.25rem;
}
.mb-2 {
  margin-bottom: 0.5rem;
}
.mb-3 {
  margin-bottom: 0.75rem;
}
.mb-4 {
  margin-bottom: 1rem;
}
.mb-5 {
  margin-bottom: 1.25rem;
}
.mb-6 {
  margin-bottom: 1.5rem;
}

.p-1 {
  padding: 0.25rem;
}
.p-2 {
  padding: 0.5rem;
}
.p-3 {
  padding: 0.75rem;
}
.p-4 {
  padding: 1rem;
}
.p-5 {
  padding: 1.25rem;
}
.p-6 {
  padding: 1.5rem;
}

.hidden {
  display: none;
}
.block {
  display: block;
}
.flex {
  display: flex;
}
.inline-flex {
  display: inline-flex;
}

.items-center {
  align-items: center;
}
.justify-center {
  justify-content: center;
}
.justify-between {
  justify-content: space-between;
}

.gap-1 {
  gap: 0.25rem;
}
.gap-2 {
  gap: 0.5rem;
}
.gap-3 {
  gap: 0.75rem;
}
.gap-4 {
  gap: 1rem;
}

.rounded {
  border-radius: 0.25rem;
}
.rounded-lg {
  border-radius: 0.5rem;
}
.rounded-full {
  border-radius: 9999px;
}

.shadow {
  box-shadow: var(--shadow);
}
.shadow-lg {
  box-shadow: var(--shadow-lg);
}

/* Footer */
.footer {
  background-color: var(--surface);
  color: var(--text-primary);
  padding: 3rem 0 1rem;
  margin-top: 4rem;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.footer-section h3,
.footer-section h4 {
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.footer-section p,
.footer-section li {
  color: #d1d5db;
  margin-bottom: 0.5rem;
}

.footer-section ul {
  list-style: none;
}

.footer-section a {
  color: #d1d5db;
  transition: color 0.2s;
}

.footer-section a:hover {
  color: var(--accent-color);
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--primary-color);
  border-radius: 50%;
  color: white;
  transition: background-color 0.2s;
}

.social-links a:hover {
  background-color: var(--primary-dark);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  margin-top: 2rem;
  padding-top: 1rem;
  text-align: center;
  color: var(--text-secondary);
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 0 0.5rem;
  }

  h1 {
    font-size: 2rem;
  }
  h2 {
    font-size: 1.75rem;
  }
  h3 {
    font-size: 1.25rem;
  }

  .main-content {
    padding-top: 70px;
  }

  .btn {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
  }

  .card-body {
    padding: 1rem;
  }
}

/* Unified Post Card */
.post-card {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 0.75rem;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.post-card:hover {
  transform: translateY(-4px);
  border-color: rgba(34, 211, 238, 0.4);
  box-shadow: 0 16px 30px rgba(3, 7, 18, 0.08);
}

.post-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid #e5e7eb;
  background: linear-gradient(90deg, rgba(248, 250, 252, 0.9), #fff);
}

.post-card__author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.post-card__avatar {
  width: 44px;
  height: 44px;
  border-radius: 9999px;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
}

.post-card__author-name {
  color: #111827;
  font-weight: 600;
}

.post-card__meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: #6b7280;
  font-size: 0.85rem;
}

.post-card__badge {
  background: #dbeafe;
  color: #991b1b;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 600;
}

.post-card__body {
  padding: 1rem 1.25rem 0.5rem;
}

.post-card__title a {
  color: #0f172a;
  text-decoration: none;
}

.post-card__title a:hover {
  color: var(--secondary-color);
}

.post-card__content {
  color: #374151;
  margin-top: 0.5rem;
}

.post-card__media {
  margin-top: 0.75rem;
}

.post-card__media img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  border-radius: 0.5rem;
}

.post-card__doc {
  margin-top: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem;
  background: #f9fafb;
  border: 1px solid #e5e7eb;
  border-radius: 0.5rem;
  color: #111827;
}

.post-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  flex-wrap: wrap;
  padding: 0.75rem 1.25rem 1rem;
  border-top: 1px solid #e5e7eb;
  background: #f8fafc;
}

.post-card__action {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: #7F1D1D;
  background: transparent;
  border: none;
  cursor: pointer;
}

.post-card__action:hover {
  color: var(--primary-dark);
}

.post-card__action.liked {
  color: #dc2626;
}

.post-card__cta {
  margin-left: auto;
  color: #dc2626;
  font-weight: 600;
}

.post-card__cta:hover {
  color: #b91c1c;
}