:root {
  --bg-dark: #111;
  --bg-secondary-dark: #222;
  --bg-light: #f7f7f7;
  --bg-secondary-light: #c4c4c4;
  --text-dark: #eee;
  --text-light: #222;
  --accent: #4ea3ff;
  --active: #dfbb2b;
  --timer: #ff4500;
  --active-timer: #121212;
}

body {
    font-family: "Segoe UI", sans-serif;
    margin: 0;
    padding: 0;
    background: var(--bg-dark);
    color: var(--text-dark);
    transition: background 0.3s, color 0.3s;
}

body.light {
    background: var(--bg-light);
    color: var(--text-light);
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1em;
    border-bottom: 2px solid var(--accent);
}

#time-container {
    text-align: right;
}

#theme-toggle {
    border: none;
    background: none;
    font-size: 1.5em;
    cursor: pointer;
}

main {
    padding: 1em;
}

#events-container {
    display: grid;
    gap: 2em;
}

@media (min-width: 700px) {
    #events-container {
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

.event {
    border: 1px solid var(--accent);
    border-radius: 10px;
    padding: 1em;
    transition: background 0.3s;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background: var(--bg-secondary-dark);
}

.light .event {
    background: var(--bg-secondary-light);
}

.event h2 {
    margin-top: 0;
    font-size: 1.2em;
}

.event.active-event {
    background: var(--active);
    color: #000;
}

.event.active-event .countdown-time {
    color: var(--active-timer);
}

.countdown {
    margin-bottom: 0px;
}

.countdown-time {
    font-size: 1.7em;
    font-weight: bold;
    color: var(--timer);
}

.notify-btn {
    font-size: 1.2em;
    background: none;
    border: none;
    cursor: pointer;
    align-self: flex-end;
    transition: transform 0.2s;
}

.notify-btn.active {
    transform: scale(1.3);
    color: var(--accent);
}

.active-event .notify-btn{
    background: var(--bg-secondary-dark);
    border-radius: 14px 14px 7px 7px;
}

.light .active-event .notify-btn {
    background: var(--bg-secondary-light);
}

a {
  text-decoration: none;
}