:root {
  --bg-color: #0a0a0a;
  --surface-color: #141414;
  --surface-hover: #1c1c1c;
  
  --bevel-light: #2e2e2e;
  --bevel-dark: #000000;
  
  --text-primary: #e6e6e6;
  --text-secondary: #8c8c8c;
  --text-accent: #bfbfbf;
  
  --gradient-metallic: linear-gradient(135deg, #2a2a2a 0%, #151515 100%);
  --gradient-dark: linear-gradient(135deg, #1f1f1f 0%, #0d0d0d 100%);
  
  --font-heading: 'Cinzel', serif;
  --font-body: 'Montserrat', sans-serif;
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-body);
  display: flex;
  justify-content: center;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

.app-container {
  width: 100%;
  max-width: 500px;
  padding: 30px 20px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

header {
  text-align: center;
  margin-bottom: 36px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.app-logo {
  width: 90px;
  height: 90px;
  margin-bottom: 20px;
  border-top: 1px solid var(--bevel-light);
  border-left: 1px solid var(--bevel-light);
  border-bottom: 1px solid var(--bevel-dark);
  border-right: 1px solid var(--bevel-dark);
  box-shadow: 0 8px 20px rgba(0,0,0,0.8);
  clip-path: polygon(15px 0, 100% 0, 100% calc(100% - 15px), calc(100% - 15px) 100%, 0 100%, 0 15px);
}

h1 {
  font-family: var(--font-heading);
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: #f0f0f0;
  text-shadow: 2px 2px 4px #000;
}

.subtitle {
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
}

main {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.card {
  background: var(--surface-color);
  padding: 24px;
  border-top: 1px solid var(--bevel-light);
  border-left: 1px solid var(--bevel-light);
  border-bottom: 2px solid var(--bevel-dark);
  border-right: 2px solid var(--bevel-dark);
  
  clip-path: polygon(15px 0, 100% 0, 100% calc(100% - 15px), calc(100% - 15px) 100%, 0 100%, 0 15px);
  box-shadow: 8px 8px 16px rgba(0, 0, 0, 0.6), -4px -4px 10px rgba(255, 255, 255, 0.02);
  display: flex;
  flex-direction: column;
  gap: 18px;
  transition: transform 0.2s ease, background 0.2s ease;
}

.card:hover {
  transform: translateY(-2px);
  background: var(--surface-hover);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 14px;
}

.card-icon {
  width: 46px;
  height: 46px;
  background: var(--gradient-metallic);
  border-top: 1px solid var(--bevel-light);
  border-left: 1px solid var(--bevel-light);
  border-bottom: 1px solid var(--bevel-dark);
  border-right: 1px solid var(--bevel-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 22px;
  color: #fff;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  box-shadow: inset 2px 2px 6px rgba(0,0,0,0.5);
}

.chase .card-icon { background: var(--gradient-dark); }
.discover .card-icon { background: var(--gradient-metallic); }

.card-title {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.categories-list {
  list-style-type: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.category-item {
  background-color: #1a1a1a;
  padding: 14px 16px;
  font-size: 14px;
  font-weight: 500;
  display: flex;
  align-items: center;
  color: var(--text-primary);
  border-top: 1px solid var(--bevel-dark);
  border-left: 1px solid var(--bevel-dark);
  border-bottom: 1px solid var(--bevel-light);
  border-right: 1px solid var(--bevel-light);
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  transition: filter 0.2s ease;
}

.category-item:hover {
  filter: brightness(1.2);
}

.category-item::before {
  content: '⬢';
  color: var(--text-accent);
  margin-right: 12px;
  font-size: 12px;
}

footer {
  margin-top: 40px;
  padding-bottom: 24px;
}

.support-btn {
  width: 100%;
  background: var(--gradient-metallic);
  color: var(--text-primary);
  border-top: 1px solid var(--bevel-light);
  border-left: 1px solid var(--bevel-light);
  border-bottom: 1px solid var(--bevel-dark);
  border-right: 1px solid var(--bevel-dark);
  padding: 18px;
  font-family: var(--font-heading);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  clip-path: polygon(15px 0, 100% 0, 100% calc(100% - 15px), calc(100% - 15px) 100%, 0 100%, 0 15px);
  box-shadow: 6px 6px 12px rgba(0,0,0,0.6);
}

.support-btn:hover {
  background: var(--gradient-dark);
}

.support-btn:active {
  transform: translateY(2px);
  border-top: 1px solid var(--bevel-dark);
  border-left: 1px solid var(--bevel-dark);
  box-shadow: inset 4px 4px 10px rgba(0,0,0,0.5);
}