/* ====== PALETA NORD ======
Light Mode (default):
  --bg:         #ECEFF4
  --fg:         #2E3440
  --border:     #D8DEE9
  --green:      #A3BE8C
  --blue:       #5E81AC
  --blueAccent: #81A1C1

Dark Mode (activado con .dark en body):
  --bg:         #2E3440
  --fg:         #D8DEE9
  --border:     #4C566A
  --green:      #A3BE8C
  --blue:       #88C0D0
  --blueAccent: #81A1C1
========================================== */

:root {
  --bg: #eceff4;
  --fg: #2e3440;
  --border: #d8dee9;
  --green: #a3be8c;
  --blue: #5e81ac;
  --blueAccent: #81a1c1;
}

body.dark {
  --bg: #2e3440;
  --fg: #d8dee9;
  --border: #4c566a;
  --green: #a3be8c;
  --blue: #88c0d0;
  --blueAccent: #81a1c1;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: system-ui, sans-serif;
}

body {
  background-color: var(--bg);
  color: var(--fg);
  padding: 2rem;
  transition: background 1.5s, color 1.5s;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

main {
  width: 100%;
  max-width: 400px;
}

/* ===== HEADER ===== */
header {
  /* text-align: center; */
  margin-bottom: 2rem;
  position: relative;
}

.header-content {
  display: flex;
  flex-direction: column;
  align-items: center;
}

h1 {
  font-size: 2rem;
  margin-bottom: 0.3rem;
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.7rem;
}

#theme-toggle {
  position: static;
  margin-left: 0.5rem;
  background: none;
  border: none;
  font-size: 1.3rem;
  cursor: pointer;
  color: var(--fg);
  transition: transform 0.2s;
}

#theme-toggle:hover {
  transform: rotate(15deg);
}

/* ===== HABIT CARDS ===== */
.habit {
  margin-bottom: 2rem;
}

.habit-name {
  font-weight: bold;
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.week {
  display: flex;
  gap: 0.5rem;
}

.habit-edit-wrapper {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  margin-bottom: 0.5rem;
}

.habit-edit-input {
  font-size: 1.1rem;
  padding: 0.5rem 0.5rem;
  border: 2px solid var(--border);
  border-radius: 5px;
  outline: none;
  color: var(--fg);
  background: var(--bg);
  transition: border 0.3s;
}
.habit-edit-input:focus {
  border-color: var(--blueAccent);
}
.habit-edit-check {
  background: var(--green);
  color: var(--bg);
  border: none;
  border-radius: 5px;
  padding: 0.4rem 0.6rem;
  margin-left: 0.2rem;
  cursor: pointer;
  font-size: 1.1rem;
  transition: background 0.2s;
  vertical-align: middle;
}
.habit-edit-check:hover {
  background: var(--blueAccent);
}

/* ===== DÍA ===== */
.day {
  width: 30px;
  height: 30px;
  border-radius: 6px;
  border: 2px solid var(--border);
  cursor: pointer;
  display: grid;
  place-items: center;
  font-size: 1rem;
  background: var(--bg);
  color: var(--fg);
  transition: all 1.5s ease;
}

.day.done {
  background-color: var(--green);
  color: var(--bg);
  border-color: var(--green);
}

.day.pop {
  animation: pop 1.5s ease;
}

.day.today {
  outline: 2px dashed var(--blue);
}

/* ===== PROGRESO ===== */
.progress {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  color: var(--blueAccent);
}

/* ===== ANIMACIÓN ===== */
@keyframes pop {
  0% {
    transform: scale(0.8);
  }
  50% {
    transform: scale(1.1);
  }
  100% {
    transform: scale(1);
  }
}