@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600;700&display=swap');

/* ========================================
   VARIÁVEIS GLOBAIS
   ======================================== */
:root {
  --bg-primary: #0f1117;
  --bg-secondary: #1a1d27;
  --bg-gradient-start: #6c63ff;
  --bg-gradient-end: #48cae4;
  --text-primary: #e8eaf0;
  --text-highlight: #6c63ff;
  --text-inverted: #ffffff;
  --border-color: #2e3147;
  --shadow-color: rgba(0, 0, 0, 0.4);
  --shadow-color-hover: rgba(108, 99, 255, 0.4);
}

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

body {
  font-family: 'Poppins', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
}

/* ========================================
   CONTAINER DO CALENDÁRIO
   ======================================== */
.calendar-container {
  max-width: 640px;
  margin: 80px auto;
  padding: 28px;
  background: var(--bg-secondary);
  border-radius: 16px;
  box-shadow: 0 8px 32px var(--shadow-color);
}

/* ========================================
   NAVEGAÇÃO (MÊS / ANO)
   ======================================== */
.calendar-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.calendar-nav h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-highlight);
  flex-grow: 1;
  text-align: center;
  letter-spacing: 0.02em;
}

.nav-btn {
  padding: 8px 18px;
  background: linear-gradient(135deg, var(--bg-gradient-start), var(--bg-gradient-end));
  color: white;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  font-family: 'Poppins', sans-serif;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.nav-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px var(--shadow-color-hover);
}

/* ========================================
   GRID DO CALENDÁRIO
   ======================================== */
.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 8px;
}

.day-header {
  font-weight: 600;
  font-size: 0.75rem;
  color: var(--text-highlight);
  text-align: center;
  padding: 6px 0;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ========================================
   CÉLULAS DO CALENDÁRIO
   ======================================== */
.calendar-day {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 10px 4px;
  min-height: 52px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 500;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
  border: 1px solid transparent;
  transition: background 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}

.calendar-day:hover {
  background: linear-gradient(135deg, var(--bg-gradient-start), var(--bg-gradient-end));
  color: var(--text-inverted);
  transform: translateY(-2px);
  border-color: transparent;
}

.calendar-day.today {
  border: 2px solid var(--text-highlight);
  box-shadow: 0 0 14px rgba(108, 99, 255, 0.5);
  font-weight: 700;
  color: var(--text-highlight);
  background: rgba(108, 99, 255, 0.1);
}

.calendar-day.today:hover {
  color: white;
}

.calendar-day.empty {
  background: transparent;
  border-color: transparent;
  box-shadow: none;
  cursor: default;
  pointer-events: none;
}

/* ========================================
   BADGE DE TAREFAS
   ======================================== */
.task-count-badge {
  background: var(--text-highlight);
  color: white;
  border-radius: 50%;
  width: 18px;
  height: 18px;
  font-size: 0.65rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 4px;
}

/* ========================================
   MODAL
   ======================================== */
.modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  justify-content: center;
  align-items: center;
  z-index: 999;
}

.modal-backdrop.open {
  display: flex;
}

.modal-content {
  background: var(--bg-secondary);
  padding: 24px;
  border-radius: 14px;
  width: 90%;
  max-width: 380px;
  box-shadow: 0 8px 32px var(--shadow-color);
  border: 1px solid var(--border-color);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.modal-header h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-highlight);
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.4rem;
  cursor: pointer;
  opacity: 0.6;
  transition: opacity 0.2s;
}

.modal-close:hover {
  opacity: 1;
}

.modal-body input {
  width: 100%;
  padding: 10px 14px;
  margin-top: 8px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Poppins', sans-serif;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s;
}

.modal-body input:focus {
  border-color: var(--text-highlight);
}

.modal-body ul {
  list-style: none;
  margin-top: 12px;
}

.modal-body ul li {
  background: rgba(255, 255, 255, 0.05);
  margin-bottom: 8px;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 0.88rem;
  border-left: 3px solid var(--text-highlight);
}

/* ========================================
   BOTÃO FERRAMENTA (tool-btn)
   ======================================== */
.tool-btn {
  display: inline-block;
  margin-top: 24px;
  padding: 10px 24px;
  background: linear-gradient(135deg, var(--bg-gradient-start), var(--bg-gradient-end));
  color: white;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.tool-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px var(--shadow-color-hover);
}