/* Base theme */
body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    text-align: center;
    transition: 0.4s;
}

/* Light Theme */
body.light {
    background: linear-gradient(135deg, #f7f9fc, #eaf3ff);
    color: #333;
}

/* Dark Theme */
body.dark {
    background: linear-gradient(135deg, #1e2530, #12161d);
    color: #eee;
}

/* Title */
h1 {
    font-weight: 300;
    letter-spacing: 2px;
}

/* Timer */
.timer {
    font-size: 90px;
    font-weight: 200;
    margin: 20px 0;
    transition: 0.3s;

    animation: breathe 5s ease-in-out infinite;
}

/* Breathing animation */
@keyframes breathe {
    0%, 100% { transform: scale(1); opacity: 0.85; }
    50% { transform: scale(1.05); opacity: 1; }
}

/* Buttons */
button {
    padding: 10px 18px;
    margin: 6px;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    transition: 0.3s;
}

/* Light buttons */
body.light button {
    background: #4a90e2;
    color: white;
}

/* Dark buttons */
body.dark button {
    background: #2f3b52;
    color: #eee;
}

button:hover {
    transform: translateY(-2px);
}

/* Input */
input {
    padding: 10px;
    border-radius: 20px;
    border: none;
    width: 90px;
    text-align: center;
    outline: none;
}

/* Mobile friendly */
@media (max-width: 500px) {
    .timer {
        font-size: 60px;
    }
}
.container {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
/* Header & Footer */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 30px;
  background: #3498db;
  color: white;
  font-weight: bold;
  font-size: 1.3rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  flex-wrap: wrap;
}

.logo {
  cursor: pointer;
}

nav a {
  color: white;
  margin-left: 25px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: color 0.3s ease;
}

nav a:hover {
  color: #f1c40f;
}

footer {
  background: #1a252f; /* Darker slate blue/gray */
  color: #b0bec5;      /* Soft light blue-gray text */
  padding: 20px 30px;
  text-align: center;
  font-size: 0.9rem;
  border-top: 3px solid #f39c12; /* Accent orange top border */
}

footer a {
  color: #90caf9;      /* Light blue links */
  margin: 0 12px;
  text-decoration: none;
  font-weight: 500;
}

footer a:hover {
  text-decoration: underline;
  color: #ffb74d;      /* Warm amber hover */
}
.seo-content h2 {
    margin-top: 25px;
    font-weight: 500;
}

.seo-content ul {
    padding-left: 20px;
}
.faq h2 {
    margin-bottom: 15px;
    font-weight: 500;
}

.faq details {
    margin-bottom: 10px;
    padding: 12px 15px;
    border-radius: 10px;
    background: rgba(0,0,0,0.05);
    cursor: pointer;
}

body.dark .faq details {
    background: rgba(255,255,255,0.08);
}

.faq summary {
    font-weight: 600;
    cursor: pointer;
}

.faq p {
    margin-top: 8px;
    font-size: 0.95rem;
    line-height: 1.5;
}