:root {
  /* 🌑 Dark Theme (Default) */
  --bg-color: #0e0b16;
  --card-bg: linear-gradient(145deg, rgba(32, 26, 50, 0.9), rgba(20, 14, 35, 0.9));
  --text-color: #d6d6e0;
  --accent: #7f5af0;
  --accent2: #2cb67d;
  --input-bg: rgba(25, 20, 45, 0.9);
  --border-color: rgba(255, 255, 255, 0.08);
}

/* 🌞 Light Theme */
.light {
  --bg-color: #f9f9f9;
  --card-bg: #ffffff;
  --text-color: #333;
  --accent: #4a00e0;
  --accent2: #8e2de2;
  --input-bg: #fff;
  --border-color: rgba(0, 0, 0, 0.1);
}

/* Reset */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "League Spartan", sans-serif;
  background: var(--bg-color);
  color: var(--text-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  padding: 2rem 1rem;
  transition: background 0.3s, color 0.3s;
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 4rem;
  width: 100%;
  max-width: 900px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo {
  width: 50px;
  height: 50px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
}

.header h1 {
  color: var(--text-color);
  letter-spacing: 1px;
  font-size: 1.5rem;
}

/* Theme Toggle */
.theme-toggle {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  width: 42px;
  height: 42px;
  cursor: pointer;
  font-size: 1.2rem;
  color: var(--text-color);
  transition: all 0.3s ease;
}

.theme-toggle:hover {
  transform: rotate(15deg);
  background: var(--accent);
  color: #fff;
}

/* Grid Layout */
.grid {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 1.5rem;
  width: 100%;
  max-width: 900px;
  margin-bottom: 2rem;
}

/* Card Base */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.5rem;
  backdrop-filter: blur(12px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  transition: background 0.3s ease, transform 0.3s ease, border 0.3s ease;
}

.card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}

/* Password Generator */
.display-container {
  position: relative;
  background: var(--input-bg);
  border-radius: 10px;
  padding: 1rem;
  margin-bottom: 1.5rem;
}

.display {
  width: 100%;
  border: none;
  background: transparent;
  color: var(--accent2);
  font-weight: 700;
  font-size: 1.3rem;
  outline: none;
  word-break: break-all;
}

/* ✅ Fix: Copy Icon Visible in Dark Mode */
.copyBtn {
  position: absolute;
  top: 50%;
  right: 1rem;
  transform: translateY(-50%);
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
}

.copyBtn img {
  width: 22px;
  height: 22px;
  filter: invert(1) brightness(1.5);
  transition: filter 0.3s ease;
}

.light .copyBtn img {
  filter: invert(0);
}

.copyBtn:hover img {
  filter: invert(62%) sepia(45%) saturate(648%) hue-rotate(80deg) brightness(1.2);
}

/* Slider + Inputs */
.length-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-color);
  font-size: 1rem;
  margin-bottom: 1rem;
}

.slider {
  width: 100%;
  cursor: pointer;
  margin-bottom: 1rem;
  accent-color: var(--accent);
}

.checks {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.check {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.08);
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  transition: background 0.3s;
}

.check:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* Strength Indicator */
.strength-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.indicator {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #ccc;
}

/* Buttons */
.generateButton {
  width: 100%;
  padding: 0.75rem;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  color: #fff;
  font-weight: 700;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.3s ease;
}

.generateButton:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(127, 90, 240, 0.4);
}

/* Save Row */
.save-row {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
}

.saveInput {
  flex: 1;
  padding: 0.5rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--input-bg);
  color: var(--text-color);
  outline: none;
  transition: border 0.3s;
}

.saveInput:focus {
  border-color: var(--accent);
}

.saveBtn {
  padding: 0.5rem 1rem;
  border: none;
  background: linear-gradient(135deg, var(--accent2), var(--accent));
  color: #fff;
  font-weight: 700;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.saveBtn:hover {
  opacity: 0.9;
}

/* Saved Passwords */
.saved-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.saved-list {
  max-height: 400px;
  overflow-y: auto;
}

.saved-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  padding: 0.5rem;
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.mask {
  font-family: monospace;
  color: var(--accent2);
  background:;
  padding: 0.3rem 0.6rem;
  border-radius: 6px;
  word-break: break-all;
  letter-spacing: 2px;
  font-weight: 600;
  transition: background 0.3s, color 0.3s;
}

/* Adjust for Light Mode */
.light .mask {
  background: rgba(0, 0, 0, 0.05);
  color: var(--accent);
}


.btn-ghost,
.btn-danger {
  border: none;
  border-radius: 6px;
  cursor: pointer;
  padding: 0.4rem 0.6rem;
  font-size: 0.85rem;
}

.btn-ghost {
  background: transparent;
  color: var(--text-color);
  transition: color 0.3s ease;
}

.btn-ghost:hover {
  color: var(--accent2);
  text-decoration: underline;
}

.btn-danger {
  background: #ff3b3b;
  color: #fff;
  transition: background 0.3s ease;
}

.btn-danger:hover {
  background: #ff5555;
}

/* Footer */
footer {
  margin-top: 2rem;
  text-align: center;
  color: var(--text-color);
  font-size: 1rem;
}

/* Responsive Design */
@media (max-width: 992px) {
  .grid {
    grid-template-columns: 1fr;
    margin-bottom: 0;
  }

  .header {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    text-align: left;
  }

  .brand {
    display: flex;
    align-items: center;
    gap: 1rem;
  }
}

@media (max-width: 600px) {
  .card {
    padding: 1rem;
  }

  .display {
    font-size: 1rem;
  }

  .save-row {
    flex-direction: column;
  }

  .saveBtn {
    width: 100%;
  }

  .theme-toggle {
    width: 38px;
    height: 38px;
    font-size: 1rem;
  }
}