:root {
  --bg: #fbfbfd;
  --glass: rgba(255, 255, 255, 0.75);
  --glass-border: rgba(255, 255, 255, 0.5);
  --text-primary: #1d1d1f;
  --text-secondary: #6e6e73;
  --accent: #0071e3;
  --card-shadow: 0 8px 32px rgba(0, 0, 0, 0.04);
  --radius-lg: 24px;
  --radius-md: 14px;
  --transition: all 0.5s cubic-bezier(0.15, 0.83, 0.66, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Funnel Display", sans-serif;
}

body {
  background-color: var(--bg);
  color: var(--text-primary);
  line-height: 1.5;
  background-image:
    radial-gradient(at 0% 0%, rgba(200, 220, 255, 0.2) 0, transparent 40%),
    radial-gradient(at 100% 100%, rgba(255, 200, 200, 0.1) 0, transparent 40%);
  background-attachment: fixed;
  padding-bottom: 5rem;
}

/* Floating Centered Navbar */
.nav-container {
  max-width: 700px;
  margin: 2rem auto;
  padding: 0.8rem 2.5rem;
  background: var(--glass);
  backdrop-filter: blur(25px);
  -webkit-backdrop-filter: blur(25px);
  border: 1px solid var(--glass-border);
  border-radius: 100px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: var(--card-shadow);
  position: sticky;
  top: 1.5rem;
  z-index: 1000;
}

.nav-container p {
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -0.5px;
}

.social-container a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  margin-left: 1.5rem;
  transition: var(--transition);
}

.social-container a:hover {
  color: var(--accent);
}

/* Input Area */
.main-container {
  max-width: 600px;
  margin: 4rem auto;
  padding: 2.5rem;
  background: var(--glass);
  backdrop-filter: blur(30px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
  box-shadow: var(--card-shadow);
}

.main-container input {
  width: 100%;
  padding: 1.2rem 0;
  background: transparent;
  border: none;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  font-size: 1.1rem;
  color: var(--text-primary);
  outline: none;
  margin-bottom: 1.5rem;
  transition: var(--transition);
}

.main-container input:focus {
  border-bottom-color: var(--accent);
}

.main-container button {
  width: 100%;
  padding: 1rem;
  background: var(--text-primary);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
}

.main-container button:hover {
  transform: translateY(-2px);
  background: #000;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

/* Memory Cards */
#memoryLi {
  max-width: 600px;
  margin: 0 auto;
  list-style: none;
  padding: 0 1rem;
}

.mem-card {
  background: var(--glass);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  padding: 1.8rem;
  border-radius: var(--radius-lg);
  margin-bottom: 1.5rem;
  box-shadow: var(--card-shadow);
  animation: slideIn 0.6s ease-out;
  transition: var(--transition);
}

.mem-card:hover {
  transform: scale(1.02) translateY(-5px);
  background: rgba(255, 255, 255, 0.9);
}

.mem-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.8rem;
}

.mem-title {
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text-primary);
}

.mem-body {
  color: #424245;
  font-size: 1rem;
  line-height: 1.6;
}

.mem-footer {
  margin-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.del-btn {
  background: #f5f5f7;
  color: #ff3b30;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.del-btn:hover {
  background: #ff3b30;
  color: white;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.watermark {
  margin-top: 6rem;
  padding: 3rem 1rem;
  text-align: center;
  border-top: 1px solid rgba(0, 0, 0, 0.05); /* Very faint line */
  animation: fadeIn 1.2s ease-out;
}

.watermark-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
}

.copyright {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  opacity: 0.8;
}

.divider {
  width: 20px;
  height: 1px;
  background: var(--accent);
  opacity: 0.3;
}

.signature {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 400;
}

.signature a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 600;
  position: relative;
  transition: var(--transition);
}

.signature a::after {
  content: "";
  position: absolute;
  width: 0;
  height: 1px;
  bottom: -2px;
  left: 0;
  background-color: var(--accent);
  transition: width 0.3s ease;
}

.signature a:hover {
  color: var(--accent);
}

.signature a:hover::after {
  width: 100%;
}

.heart {
  display: inline-block;
  color: var(--accent);
  margin: 0 2px;
  font-size: 0.9rem;
  animation: pulse 2s infinite ease-in-out;
}

/* Subtle animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.8;
  }
  50% {
    transform: scale(1.2);
    opacity: 1;
  }
}