* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Arial, sans-serif;
  background: #f4f6f8;
  color: #1f2937;
  direction: rtl;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 16px 60px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

header h1 {
  font-size: 1.4rem;
  color: #0f766e;
  margin: 0;
}

.btn {
  background: #0f766e;
  color: #fff;
  border: none;
  padding: 10px 18px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.95rem;
}

.btn:hover {
  background: #0d5f58;
}

.btn-secondary {
  background: #e5e7eb;
  color: #1f2937;
}

.btn-secondary:hover {
  background: #d1d5db;
}

.card {
  background: #fff;
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
  margin-bottom: 20px;
}

.card h2 {
  margin-top: 0;
  font-size: 1.1rem;
  color: #374151;
}

form.task-form {
  display: grid;
  gap: 10px;
}

form.task-form input,
form.task-form textarea {
  width: 100%;
  padding: 10px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.95rem;
}

.row {
  display: flex;
  gap: 10px;
}

.row > * {
  flex: 1;
}

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  flex-wrap: wrap;
  gap: 10px;
}

.toolbar input[type="date"] {
  padding: 8px;
  border-radius: 8px;
  border: 1px solid #d1d5db;
}

.task-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  margin-bottom: 10px;
  background: #fff;
}

.task-item.completed {
  opacity: 0.55;
}

.task-item.completed .task-title {
  text-decoration: line-through;
}

.task-check input {
  width: 20px;
  height: 20px;
}

.task-body {
  flex: 1;
}

.task-title {
  font-weight: 600;
}

.task-desc {
  font-size: 0.9rem;
  color: #6b7280;
  margin-top: 2px;
}

.task-meta {
  font-size: 0.8rem;
  color: #9ca3af;
  margin-top: 4px;
  display: flex;
  gap: 12px;
}

.task-actions {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.task-actions button {
  border: none;
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 0.8rem;
  cursor: pointer;
}

.btn-edit {
  background: #dbeafe;
  color: #1d4ed8;
}

.btn-delete {
  background: #fee2e2;
  color: #b91c1c;
}

.hint {
  color: #9ca3af;
  text-align: center;
  padding: 20px 0;
}

.error {
  color: #b91c1c;
}

/* صفحة تسجيل الدخول */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0f766e, #134e4a);
}

.login-box {
  background: #fff;
  padding: 32px;
  border-radius: 14px;
  width: 100%;
  max-width: 360px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.login-box h1 {
  text-align: center;
  color: #0f766e;
  margin-bottom: 24px;
}

.login-box input {
  width: 100%;
  padding: 12px;
  margin-bottom: 12px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  font-size: 0.95rem;
}

.login-box button {
  width: 100%;
  margin-top: 6px;
}

#loginError {
  color: #b91c1c;
  text-align: center;
  margin-top: 10px;
  font-size: 0.9rem;
}