@charset "UTF-8";

/* Pretendard Font */
@import url("https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.min.css");

:root {
  --primary: #FF5732;
  --primary-hover: #e04824;
  --bg: #F8F9FA;
  --card-bg: #FFFFFF;
  --text: #333333;
  --text-muted: #868E96;
  --border-input: #E9ECEF;
  --border-item: #F0F0F0;
  --done-bg: #F1F3F5;
  --done-hover: #E9ECEF;
  --done-text: #495057;
  --del-bg: #FFF5F4;
  --del-hover: #FFEAE6;
  --del-text: #FF5732;
  --radius-card: 28px;
  --radius-item: 16px;
  --radius-btn: 8px;
  --shadow-card: 0 20px 50px -15px rgba(0, 0, 0, 0.08);
}

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

body {
  font-family: "Pretendard", -apple-system, BlinkMacSystemFont, system-ui, Roboto, "Helvetica Neue", "Segoe UI", sans-serif;
  background-color: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
  line-height: 1.5;
}

.container {
  width: 100%;
  max-width: 512px;
}

.card {
  background-color: var(--card-bg);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-input);
  padding: 32px 28px;
}

.header {
  margin-bottom: 24px;
}

.date-badge {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

.counter {
  font-size: 12px;
  font-weight: 700;
  color: var(--primary);
  background-color: var(--del-bg);
  padding: 3px 10px;
  border-radius: 9999px;
}

.title {
  font-size: 28px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
}

.input-section {
  margin-bottom: 24px;
}

.input-group {
  display: flex;
  gap: 8px;
}

.todo-input {
  flex: 1;
  height: 48px;
  padding: 0 16px;
  font-size: 15px;
  border: 2px solid var(--border-input);
  border-radius: 12px;
  outline: none;
  font-family: inherit;
  transition: border-color 0.2s ease, background-color 0.2s ease;
  background-color: #ffffff;
  color: var(--text);
}

.todo-input::placeholder {
  color: #ADB5BD;
}

.todo-input:focus {
  border-color: var(--primary);
}

.todo-input.error {
  border-color: #ef4444;
  background-color: #fff8f8;
}

.add-btn {
  height: 48px;
  padding: 0 20px;
  background-color: var(--primary);
  color: #ffffff;
  font-size: 15px;
  font-weight: 700;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: inherit;
  transition: background-color 0.15s ease, transform 0.1s ease;
}

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

.add-btn:active {
  transform: scale(0.98);
}

.error-message {
  color: #ef4444;
  font-size: 13px;
  font-weight: 500;
  margin-top: 8px;
  display: none;
}

.error-message.show {
  display: block;
}

.list-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  padding: 0 2px;
}

.todo-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.todo-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  background-color: #FDFDFD;
  border: 1px solid var(--border-item);
  border-radius: var(--radius-item);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
  transition: all 0.2s ease;
}

.todo-item:hover {
  background-color: #ffffff;
  border-color: var(--border-input);
}

.todo-item.completed {
  background-color: #FAFAFA;
  border-color: var(--border-item);
  box-shadow: none;
}

.todo-content {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  min-width: 0;
}

.check-btn {
  width: 20px;
  height: 20px;
  border-radius: 6px;
  border: 1.5px solid #DEE2E6;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 12px;
  font-weight: bold;
  transition: all 0.15s ease;
  flex-shrink: 0;
}

.todo-item.completed .check-btn {
  background-color: var(--primary);
  border-color: var(--primary);
}

.todo-text {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  word-break: break-word;
  transition: opacity 0.2s ease, text-decoration 0.2s ease, color 0.2s ease;
}

.todo-item.completed .todo-text {
  text-decoration: line-through;
  opacity: 0.5;
  color: var(--text-muted);
}

.action-buttons {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.complete-btn, .delete-btn {
  padding: 6px 10px;
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--radius-btn);
  border: none;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.15s ease;
}

.complete-btn {
  background-color: var(--done-bg);
  color: var(--done-text);
}

.complete-btn:hover {
  background-color: var(--done-hover);
}

.todo-item.completed .complete-btn {
  background-color: var(--border-input);
  color: var(--done-text);
}

.delete-btn {
  background-color: var(--del-bg);
  color: var(--del-text);
}

.delete-btn:hover {
  background-color: var(--del-hover);
}

.empty-state {
  text-align: center;
  padding: 40px 16px;
  background-color: #FAFAFA;
  border: 1px dashed var(--border-input);
  border-radius: var(--radius-item);
  color: var(--text-muted);
}

.empty-state p.main {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
}

@media (max-width: 480px) {
  body {
    padding: 12px;
    align-items: flex-start;
  }
  .card {
    padding: 24px 18px;
    border-radius: 20px;
  }
  .title {
    font-size: 24px;
  }
}