.container {
  margin: 0 auto;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

h1 {
  font-size: 2.2rem;
  font-weight: 700;
}

.channel-info {
  background: var(--dark-3);
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
}

.channel-id {
  color: var(--accent);
  font-weight: 600;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.card {
  padding: 1.5rem;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px -10px rgba(0, 0, 0, 0.4);
}

.card-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.card-title i {
  color: var(--primary);
}

.form-group {
  margin-bottom: 1.2rem;
}

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

input,
select,
textarea,
button {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: var(--dark-3);
  color: var(--text-primary);
  font-family: "Inter", sans-serif;
  transition: var(--transition);
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

button {
  background: var(--primary);
  color: white;
  border: none;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.5rem;
}

button:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

button.secondary {
  background: var(--dark-3);
}

button.secondary:hover {
  background: var(--dark-2);
}

button.success {
  background: var(--accent-green);
}

button.success:hover {
  background: #00b34d;
}

.btn-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
  margin-top: 1.5rem;
}

.file-upload {
  position: relative;
  overflow: hidden;
  display: inline-block;
  width: 100%;
}

.file-upload-btn {
  background: var(--dark-3);
  color: var(--text-primary);
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  border: 1px dashed rgba(255, 255, 255, 0.2);
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
}

.file-upload-btn:hover {
  border-color: var(--primary);
  background: rgba(37, 99, 235, 0.1);
}

.file-upload input[type="file"] {
  position: absolute;
  left: 0;
  top: 0;
  opacity: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
}

.history-container {
  max-height: 300px;
  overflow-y: auto;
  margin-top: 1rem;
  border-radius: var(--radius);
  background: var(--dark-3);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

th {
  background: rgba(0, 0, 0, 0.2);
  font-weight: 600;
  color: var(--text-secondary);
  position: sticky;
  top: 0;
}

tr:last-child td {
  border-bottom: none;
}

tr:hover {
  background: rgba(255, 255, 255, 0.05);
}

.total-amount {
  margin-top: 1.5rem;
  padding: 1rem;
  background: rgba(0, 200, 83, 0.1);
  border-radius: var(--radius);
  border: 1px solid rgba(0, 200, 83, 0.2);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
}

.amount {
  color: var(--accent);
  font-size: 1.5rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .grid {
    grid-template-columns: 1fr;
  }

  header {
    flex-direction: column;
    gap: 1rem;
    align-items: flex-start;
  }

  .btn-group {
    grid-template-columns: 1fr;
  }
}

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

.card {
  animation: fadeIn 0.5s ease-out;
}

.card:nth-child(1) {
  animation-delay: 0.1s;
}
.card:nth-child(2) {
  animation-delay: 0.2s;
}
.card:nth-child(3) {
  animation-delay: 0.3s;
}
.card:nth-child(4) {
  animation-delay: 0.4s;
}