@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Light mode colors */
  --bg-primary: #f8f9fa;
  --bg-secondary: #ffffff;
  --bg-gradient-start: #f0f0f5;
  --bg-gradient-mid: #fafafa;
  --bg-gradient-end: #f0f0f5;

  --text-primary: #1a1a1a;
  --text-secondary: #666666;
  --text-tertiary: #999999;

  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(139, 92, 246, 0.2);
  --glass-shadow: rgba(0, 0, 0, 0.1);

  --input-bg: rgba(255, 255, 255, 0.8);
  --input-border: rgba(139, 92, 246, 0.3);
  --input-placeholder: rgba(0, 0, 0, 0.4);

  --scrollbar-track: rgba(240, 240, 245, 0.3);
  --scrollbar-thumb: rgba(139, 92, 246, 0.4);
  --scrollbar-thumb-hover: rgba(139, 92, 246, 0.6);

  --radial-1: rgba(124, 58, 237, 0.08);
  --radial-2: rgba(99, 102, 241, 0.06);
  --radial-3: rgba(139, 92, 246, 0.05);

  --feature-card-bg: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(248, 248, 252, 0.9) 100%);
  --feature-card-border: rgba(139, 92, 246, 0.2);
  --feature-card-shadow: rgba(0, 0, 0, 0.1);

  --tab-text: rgba(0, 0, 0, 0.6);
  --tab-hover-bg: rgba(139, 92, 246, 0.1);
  --tab-hover-text: rgba(0, 0, 0, 0.9);

  --modal-overlay: rgba(0, 0, 0, 0.4);
}

.dark {
  /* Dark mode colors */
  --bg-primary: #0a0a0f;
  --bg-secondary: #151520;
  --bg-gradient-start: #0a0a0f;
  --bg-gradient-mid: #151520;
  --bg-gradient-end: #0a0a0f;

  --text-primary: #ffffff;
  --text-secondary: #d1d5db;
  --text-tertiary: #9ca3af;

  --glass-bg: rgba(20, 20, 30, 0.6);
  --glass-border: rgba(80, 70, 150, 0.15);
  --glass-shadow: rgba(0, 0, 0, 0.3);

  --input-bg: rgba(20, 20, 30, 0.6);
  --input-border: rgba(80, 70, 150, 0.2);
  --input-placeholder: rgba(255, 255, 255, 0.4);

  --scrollbar-track: rgba(20, 20, 30, 0.3);
  --scrollbar-thumb: rgba(80, 70, 150, 0.4);
  --scrollbar-thumb-hover: rgba(100, 90, 180, 0.6);

  --radial-1: rgba(80, 70, 150, 0.08);
  --radial-2: rgba(60, 50, 120, 0.08);
  --radial-3: rgba(50, 40, 100, 0.05);

  --feature-card-bg: linear-gradient(135deg, rgba(30, 30, 45, 0.8) 0%, rgba(25, 25, 35, 0.8) 100%);
  --feature-card-border: rgba(139, 92, 246, 0.2);
  --feature-card-shadow: rgba(0, 0, 0, 0.4);

  --tab-text: rgba(255, 255, 255, 0.6);
  --tab-hover-bg: rgba(80, 70, 150, 0.1);
  --tab-hover-text: rgba(255, 255, 255, 0.9);

  --modal-overlay: rgba(0, 0, 0, 0.7);
}

* {
  font-family: 'Inter', sans-serif;
}

body {
  background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-mid) 50%, var(--bg-gradient-end) 100%);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  color: var(--text-primary);
  transition: background 0.3s ease, color 0.3s ease;
}

body::before {
  content: '';
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 20% 50%, var(--radial-1) 0%, transparent 50%),
              radial-gradient(circle at 80% 80%, var(--radial-2) 0%, transparent 50%),
              radial-gradient(circle at 40% 20%, var(--radial-3) 0%, transparent 50%);
  animation: float 20s ease-in-out infinite;
  pointer-events: none;
  transition: background 0.3s ease;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  33% { transform: translate(30px, -30px) rotate(120deg); }
  66% { transform: translate(-20px, 20px) rotate(240deg); }
}

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  box-shadow: 0 8px 32px 0 var(--glass-shadow);
  transition: all 0.3s ease;
}

/* Glass card variant - enhanced */
.glass-card-enhanced {
  background: var(--glass-bg);
  backdrop-filter: blur(25px);
  -webkit-backdrop-filter: blur(25px);
  border: 1px solid var(--glass-border);
  box-shadow: 0 8px 32px 0 var(--glass-shadow);
  transition: all 0.3s ease;
}

.nav-brand {
  font-weight: 800;
  background: linear-gradient(135deg, #a78bfa 0%, #818cf8 50%, #a78bfa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.btn-primary {
  background: linear-gradient(135deg, #7c3aed 0%, #6366f1 100%);
  border: none;
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(100, 80, 200, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(100, 80, 200, 0.3);
}

.btn-secondary {
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.2);
  color: var(--text-primary);
  border-radius: 0.5rem;
  font-weight: 500;
  transition: all 0.3s ease;
}

.dark .btn-secondary {
  background: rgba(80, 70, 150, 0.15);
  border: 1px solid rgba(100, 90, 180, 0.2);
  color: #c4b5fd;
}

.btn-secondary:hover {
  background: rgba(139, 92, 246, 0.2);
  border-color: rgba(139, 92, 246, 0.3);
}

.dark .btn-secondary:hover {
  background: rgba(80, 70, 150, 0.25);
  border-color: rgba(100, 90, 180, 0.3);
}

.input-field {
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  color: var(--text-primary);
  padding: 0.625rem 1rem;
  border-radius: 0.5rem;
  transition: all 0.3s ease;
}

.input-field:focus {
  outline: none;
  border-color: rgba(100, 90, 180, 0.4);
  box-shadow: 0 0 0 3px rgba(80, 70, 150, 0.1);
}

.input-field::placeholder {
  color: var(--input-placeholder);
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

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

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

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

/* Custom scrollbar variants */
.custom-scrollbar::-webkit-scrollbar {
  width: 6px;
}

.custom-scrollbar::-webkit-scrollbar-track {
  background: rgba(80, 70, 150, 0.1);
  border-radius: 3px;
}

.custom-scrollbar::-webkit-scrollbar-thumb {
  background: rgba(100, 90, 180, 0.5);
  border-radius: 3px;
}

.custom-scrollbar::-webkit-scrollbar-thumb:hover {
  background: rgba(100, 90, 180, 0.7);
}

.scrollbar-hide::-webkit-scrollbar {
  display: none;
}

.scrollbar-hide {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

/* Line clamp utilities */
.line-clamp-1 {
  display: -webkit-box;
  -webkit-line-clamp: 1;
  line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-4 {
  display: -webkit-box;
  -webkit-line-clamp: 4;
  line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
  word-break: break-word;
}

.overflow-wrap-anywhere {
  overflow-wrap: anywhere;
}

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

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Tab buttons */
.tab-btn {
  position: relative;
  padding: 0.75rem 1rem;
  color: var(--tab-text);
  transition: all 0.3s ease;
  border: none;
  background: transparent;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

@media (min-width: 640px) {
  .tab-btn {
    padding: 1rem 1.5rem;
  }
}

.tab-btn:hover {
  color: var(--tab-hover-text);
  background: var(--tab-hover-bg);
}

.tab-btn.active {
  color: var(--text-primary);
  border-bottom-color: #a78bfa;
  background: var(--tab-hover-bg);
}

/* Date input styling */
input[type="date"].input-field {
  color-scheme: light;
}

.dark input[type="date"].input-field {
  color-scheme: dark;
}

input[type="date"].input-field::-webkit-calendar-picker-indicator {
  cursor: pointer;
  opacity: 1;
}

.dark input[type="date"].input-field::-webkit-calendar-picker-indicator {
  filter: invert(1) brightness(100);
}

.dark input[type="date"].input-field::-webkit-inner-spin-button,
.dark input[type="date"].input-field::-webkit-clear-button {
  filter: invert(1) brightness(100);
}

/* Modal dialogs */
.modal-dialog {
  background-color: var(--modal-overlay);
}

.modal-dialog .glass-card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(25px);
  -webkit-backdrop-filter: blur(25px);
}

.dark .modal-dialog .glass-card {
  background: var(--glass-bg);
}