@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@300;400;500;600;700;800;900&display=swap');

:root {
  --brand-dark: #0d1117;
  --brand-darker: #080d14;
  --brand-card: #161b22;
  --brand-border: #21262d;
  --brand-orange: #f97316;
  --brand-gold: #f59e0b;
  --brand-red: #ef4444;
  --brand-green: #22c55e;
  --brand-gradient: linear-gradient(135deg, #e83a00 0%, #f97316 50%, #f59e0b 100%);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: var(--brand-dark);
  color: #e5e7eb;
  font-family: 'Noto Sans KR', sans-serif;
  overflow-x: hidden;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--brand-darker); }
::-webkit-scrollbar-thumb { background: #374151; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--brand-orange); }

/* Gradient Text */
.gradient-text {
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Cards */
.glass-card {
  background: rgba(22, 27, 34, 0.8);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(249, 115, 22, 0.1);
  border-radius: 16px;
  transition: all 0.3s ease;
}

.glass-card:hover {
  border-color: rgba(249, 115, 22, 0.3);
  box-shadow: 0 0 30px rgba(249, 115, 22, 0.1);
  transform: translateY(-2px);
}

/* Buttons */
.btn-primary {
  background: var(--brand-gradient);
  border: none;
  color: white;
  padding: 12px 28px;
  border-radius: 10px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.btn-primary::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-primary:hover::before { left: 100%; }
.btn-primary:hover {
  box-shadow: 0 0 30px rgba(249, 115, 22, 0.5);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  border: 1px solid rgba(249, 115, 22, 0.5);
  color: var(--brand-orange);
  padding: 12px 28px;
  border-radius: 10px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-secondary:hover {
  background: rgba(249, 115, 22, 0.1);
  border-color: var(--brand-orange);
}

/* Signal Badges */
.signal-buy {
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: #22c55e;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.signal-sell {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #ef4444;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.signal-hold {
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: #f59e0b;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
}

/* Price change */
.price-up { color: #ef4444; }
.price-down { color: #3b82f6; }

/* Navigation */
.navbar {
  background: rgba(8, 13, 20, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(249, 115, 22, 0.1);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 64px;
}

/* Sidebar */
.sidebar {
  background: rgba(13, 17, 23, 0.95);
  border-right: 1px solid rgba(249, 115, 22, 0.1);
  width: 260px;
  position: fixed;
  top: 64px;
  left: 0;
  bottom: 0;
  overflow-y: auto;
  transition: transform 0.3s ease;
  z-index: 100;
}

.sidebar-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  cursor: pointer;
  transition: all 0.2s ease;
  border-radius: 10px;
  margin: 4px 12px;
  font-size: 14px;
  color: #9ca3af;
}

.sidebar-item:hover {
  background: rgba(249, 115, 22, 0.1);
  color: var(--brand-orange);
}

.sidebar-item.active {
  background: rgba(249, 115, 22, 0.15);
  color: var(--brand-orange);
  border-left: 3px solid var(--brand-orange);
}

/* Main content */
.main-content {
  margin-left: 260px;
  margin-top: 64px;
  padding: 24px;
  min-height: calc(100vh - 64px);
}

/* Strength meter */
.strength-bar {
  height: 6px;
  border-radius: 3px;
  background: #1f2937;
  overflow: hidden;
}

.strength-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.5s ease;
}

/* Market badge */
.badge-kospi {
  background: rgba(59, 130, 246, 0.15);
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: #60a5fa;
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
}

.badge-kosdaq {
  background: rgba(168, 85, 247, 0.15);
  border: 1px solid rgba(168, 85, 247, 0.3);
  color: #c084fc;
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
}

/* Input styles */
.form-input {
  background: rgba(22, 27, 34, 0.8);
  border: 1px solid var(--brand-border);
  color: white;
  padding: 12px 16px;
  border-radius: 10px;
  width: 100%;
  transition: all 0.3s ease;
  font-size: 14px;
}

.form-input:focus {
  outline: none;
  border-color: var(--brand-orange);
  box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.1);
}

.form-input::placeholder { color: #4b5563; }

/* Landing page animations */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
}

@keyframes glow {
  0%, 100% { box-shadow: 0 0 20px rgba(249, 115, 22, 0.3); }
  50% { box-shadow: 0 0 60px rgba(249, 115, 22, 0.6); }
}

@keyframes pulse-ring {
  0% { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(2); opacity: 0; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes countUp {
  from { opacity: 0; transform: scale(0.5); }
  to { opacity: 1; transform: scale(1); }
}

.animate-float { animation: float 6s ease-in-out infinite; }
.animate-glow { animation: glow 3s ease-in-out infinite; }
.animate-fadeInUp { animation: fadeInUp 0.6s ease-out forwards; }
.animate-slideInLeft { animation: slideInLeft 0.6s ease-out forwards; }

/* Particle background */
.particle {
  position: absolute;
  width: 2px;
  height: 2px;
  background: var(--brand-orange);
  border-radius: 50%;
  animation: particleFloat linear infinite;
  opacity: 0;
}

@keyframes particleFloat {
  0% { transform: translateY(100vh) scale(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(-100px) scale(1); opacity: 0; }
}

/* News card */
.news-card {
  background: rgba(22, 27, 34, 0.8);
  border: 1px solid rgba(249, 115, 22, 0.08);
  border-radius: 12px;
  padding: 20px;
  transition: all 0.3s ease;
  cursor: pointer;
}

.news-card:hover {
  border-color: rgba(249, 115, 22, 0.3);
  background: rgba(22, 27, 34, 0.95);
  transform: translateY(-3px);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

/* Stats card */
.stat-card {
  background: rgba(22, 27, 34, 0.8);
  border-radius: 16px;
  padding: 24px;
  border: 1px solid rgba(249, 115, 22, 0.08);
  transition: all 0.3s ease;
}

.stat-card:hover {
  border-color: rgba(249, 115, 22, 0.2);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* Table */
.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th {
  background: rgba(22, 27, 34, 0.9);
  padding: 14px 16px;
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  color: #6b7280;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--brand-border);
}

.data-table td {
  padding: 14px 16px;
  border-bottom: 1px solid rgba(33, 38, 45, 0.5);
  font-size: 14px;
  transition: background 0.2s;
}

.data-table tr:hover td {
  background: rgba(249, 115, 22, 0.05);
}

/* Loading spinner */
.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(249, 115, 22, 0.1);
  border-top-color: var(--brand-orange);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.modal-content {
  background: var(--brand-card);
  border: 1px solid rgba(249, 115, 22, 0.2);
  border-radius: 20px;
  padding: 32px;
  width: 90%;
  max-width: 500px;
  animation: slideUp 0.3s ease;
  max-height: 90vh;
  overflow-y: auto;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Alert */
.alert-success {
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: #22c55e;
  padding: 14px 18px;
  border-radius: 10px;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.alert-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #ef4444;
  padding: 14px 18px;
  border-radius: 10px;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Ticker tape */
.ticker-tape {
  background: rgba(8, 13, 20, 0.9);
  border-top: 1px solid rgba(249, 115, 22, 0.1);
  border-bottom: 1px solid rgba(249, 115, 22, 0.1);
  overflow: hidden;
  white-space: nowrap;
  padding: 8px 0;
}

.ticker-inner {
  display: inline-block;
  animation: ticker 30s linear infinite;
}

@keyframes ticker {
  0% { transform: translateX(100vw); }
  100% { transform: translateX(-100%); }
}

/* Tab */
.tab-btn {
  padding: 10px 24px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s ease;
  color: #6b7280;
  border: 1px solid transparent;
  background: transparent;
}

.tab-btn.active {
  background: rgba(249, 115, 22, 0.15);
  color: var(--brand-orange);
  border-color: rgba(249, 115, 22, 0.3);
}

.tab-btn:hover:not(.active) {
  color: #e5e7eb;
  background: rgba(255,255,255,0.05);
}

/* Toast notification */
.toast {
  position: fixed;
  top: 80px;
  right: 20px;
  z-index: 9999;
  padding: 14px 20px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
  animation: slideInRight 0.3s ease, fadeOut 0.3s ease 2.7s forwards;
  min-width: 280px;
  max-width: 400px;
}

.toast-success {
  background: rgba(34, 197, 94, 0.9);
  color: white;
  box-shadow: 0 8px 32px rgba(34, 197, 94, 0.3);
}

.toast-error {
  background: rgba(239, 68, 68, 0.9);
  color: white;
  box-shadow: 0 8px 32px rgba(239, 68, 68, 0.3);
}

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

@keyframes fadeOut {
  from { opacity: 1; }
  to { opacity: 0; pointer-events: none; }
}

/* Hero section */
.hero-bg {
  background: radial-gradient(ellipse at 50% 50%, rgba(249, 115, 22, 0.08) 0%, transparent 70%);
}

/* Responsive */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .main-content {
    margin-left: 0;
  }
}

/* Admin badge */
.admin-badge {
  background: var(--brand-gradient);
  color: white;
  padding: 2px 10px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
}

/* Trend arrow */
.trend-up::before { content: '▲ '; }
.trend-down::before { content: '▼ '; }

/* Chart container */
.chart-container {
  position: relative;
  height: 300px;
  width: 100%;
}

/* Divider */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(249, 115, 22, 0.3), transparent);
  margin: 24px 0;
}