:root {
  --primary: #2ecc71; /* Emerald Green */
  --primary-dark: #27ae60; /* Darker Emerald Green */
  --secondary: #9b59b6; /* Amethyst Purple */
  --success: #27ae60; /* Keep success green */
  --warning: #f39c12;
  /* Modified light mode colors for a slight green hue */
  --bg-primary: #f8fff8; /* Very light green tint for primary background */
  --bg-secondary: #eefee8; /* Very light green tint for secondary background */
  --bg-card: rgba(
    248,
    255,
    248,
    0.95
  ); /* Very light green tint for card background */
  --text-primary: #2c3e50;
  --text-secondary: #7f8c8d;
  --border: #e1ede1; /* Very light green tint for border */
  --shadow: rgba(0, 0, 0, 0.1);
  --glass-bg: rgba(
    248,
    255,
    248,
    0.1
  ); /* Very light green tint for glass background */
  --glass-border: rgba(
    225,
    237,
    225,
    0.2
  ); /* Very light green tint for glass border */
  --font-body: "Inter", sans-serif;
  --font-heading: "Poppins", sans-serif;
}

[data-theme="dark"] {
  --bg-primary: #1e202a; /* Slightly blue-tinted dark background */
  --bg-secondary: #2f323f; /* Slightly blue-tinted darker secondary background */
  --bg-card: rgba(30, 32, 42, 0.95); /* Blue-tinted card background */
  --text-primary: #f1f5f9;
  --text-secondary: #aeb8c9; /* Adjusted for better contrast with blue tint */
  --border: #4a5061; /* Slightly blue-tinted border */
  --shadow: rgba(0, 0, 0, 0.5);
  --glass-bg: rgba(30, 32, 42, 0.1);
  --glass-border: rgba(74, 80, 97, 0.2); /* Slightly blue-tinted glass border */

  /* Specific background for dark mode */
  background-image: url("back4.jpg"); /* */
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-body);
  background: var(
    --bg-primary
  ); /* Uses the new light green-tinted primary background */
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow-x: hidden;
  transition: all 0.3s ease;
  position: relative;

  /* No longer need light mode patterns if image is providing flair */
}

/* Light mode background image */
body:not([data-theme="dark"]) {
  background-image: url("light.webp"); /* */
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
}

.background-pattern {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    var(--primary) 0%,
    var(--primary-dark) 100%
  );
  opacity: 0.03;
  z-index: -2;
}

.background-pattern::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: radial-gradient(
      circle at 25% 25%,
      var(--primary) 2px,
      transparent 2px
    ),
    radial-gradient(circle at 75% 75%, var(--secondary) 1px, transparent 1px);
  background-size: 50px 50px, 30px 30px;
  background-position: 0 0, 25px 25px;
  opacity: 0.1;
  animation: float 20s ease-in-out infinite;
}

/* Decorative blobs for larger screens */
.decorative-blob {
  position: absolute;
  width: 250px;
  height: 250px;
  background: var(--primary);
  border-radius: 50%;
  opacity: 0.1;
  filter: blur(80px);
  z-index: -1;
  animation: blobDance 15s infinite alternate ease-in-out;
}

.blob-1 {
  top: 10%;
  left: 5%;
  background: var(--primary);
  animation-delay: 0s;
}

.blob-2 {
  bottom: 15%;
  right: 8%;
  background: var(--secondary);
  animation-delay: 7s;
  width: 200px;
  height: 200px;
}

/* Hide existing decorative blobs in light mode if they conflict or aren't desired */
body:not([data-theme="dark"]) .decorative-blob {
  display: none;
}

@keyframes blobDance {
  0% {
    transform: translate(0, 0) scale(1);
  }
  25% {
    transform: translate(20px, -30px) scale(1.05);
  }
  50% {
    transform: translate(0, 20px) scale(0.95);
  }
  75% {
    transform: translate(-30px, -10px) scale(1.1);
  }
  100% {
    transform: translate(0, 0) scale(1);
  }
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-20px) rotate(2deg);
  }
}

.theme-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 8px;
  cursor: pointer;
  box-shadow: 0 4px 20px var(--shadow);
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
}

.theme-toggle:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--shadow);
}

.theme-icon {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.theme-icon.active {
  background: var(--primary);
  color: white;
}

main {
  background: var(--bg-card);
  border-radius: 24px;
  box-shadow: 0 20px 40px var(--shadow), 0 0 0 1px var(--glass-border),
    0 0 0 4px rgba(46, 204, 113, 0.1), 0 0 0 8px rgba(155, 89, 182, 0.05);
  padding: 2.5rem;
  max-width: 520px;
  width: 90%;
  animation: slideUp 0.6s ease-out;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px) scale(0.9);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes gradientShift {
  0%,
  100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

.header {
  text-align: center;
  margin-bottom: 2rem;
}

.header h1 {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 400;
}

.calculator {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.input-group {
  position: relative;
}

#custom-value {
  width: 100%;
  padding: 1rem 1.25rem;
  font-size: 1.1rem;
  border: 2px solid var(--border);
  border-radius: 16px;
  transition: all 0.3s ease;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-weight: 500;
}

#custom-value:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(46, 204, 113, 0.1);
  background: var(--bg-primary);
  transform: translateY(-2px);
}

#custom-value:not(:placeholder-shown) {
  border-color: var(--success);
}

.results {
  background: var(--bg-secondary);
  padding: 1.5rem;
  border-radius: 20px;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
}

.results::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(46, 204, 113, 0.1),
    transparent
  );
  transition: left 0.5s ease;
}

.results.calculating::before {
  left: 100%;
}

.field-item {
  display: flex;
  align-items: center;
  margin-bottom: 1.25rem;
  opacity: 0;
  transform: translateX(-20px);
  animation: slideInLeft 0.5s ease forwards;
}

.field-item:nth-child(1) {
  animation-delay: 0.1s;
}
.field-item:nth-child(2) {
  animation-delay: 0.2s;
}
.field-item:nth-child(3) {
  animation-delay: 0.3s;
}
.field-item:nth-child(4) {
  animation-delay: 0.4s;
}

@keyframes slideInLeft {
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.field-label {
  display: flex;
  align-items: center;
  min-width: 140px;
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.95rem;
}

.field-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 50%;
  font-size: 14px;
  margin-right: 0.75rem;
  color: white;
  box-shadow: 0 4px 12px rgba(46, 204, 113, 0.3);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.field-icon::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    45deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  transform: rotate(45deg);
  transition: all 0.3s ease;
  opacity: 0;
}

.field-item:hover .field-icon::before {
  opacity: 1;
  animation: shine 0.6s ease;
}

@keyframes shine {
  0% {
    transform: translateX(-100%) translateY(-100%) rotate(45deg);
  }
  100% {
    transform: translateX(100%) translateY(100%) rotate(45deg);
  }
}

.input-container {
  position: relative;
  flex: 1;
  margin-left: 1rem;
}

.field-input {
  width: 100%;
  padding: 0.75rem 3rem 0.75rem 1rem;
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-weight: 500;
  transition: all 0.3s ease;
}

#custom-value:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(46, 204, 113, 0.1);
  background: var(--bg-primary);
  transform: translateY(-2px);
}

#custom-value:not(:placeholder-shown) {
  border-color: var(--success);
}

.copy-btn {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 6px 8px;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  height: 28px;
  font-family: inherit;
}

.copy-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-50%) scale(1.05);
}

.copy-btn:active {
  transform: translateY(-50%) scale(0.95);
}

.copy-btn.copied {
  background: var(--success);
  animation: copySuccess 0.5s ease;
}

@keyframes copySuccess {
  0% {
    transform: translateY(-50%) scale(1);
  }
  25% {
    transform: translateY(-50%) scale(1.15);
  }
  100% {
    transform: translateY(-50%) scale(1);
  }
}

.copy-btn::before {
  content: "📋";
  font-size: 12px;
}

.copy-btn i {
  font-size: 11px;
}

.copy-btn.copied::before {
  content: "✓";
}

.cv-container .copy-btn {
  display: none;
}

.pulse-ring {
  position: absolute;
  border: 2px solid var(--primary);
  border-radius: 50%;
  opacity: 0;
  animation: pulse-ring 1s ease-out;
}

@keyframes pulse-ring {
  0% {
    transform: scale(0.8);
    opacity: 1;
  }
  100% {
    transform: scale(2);
    opacity: 0;
  }
}

.floating-number {
  position: absolute;
  font-weight: 600;
  color: var(--success);
  font-size: 1rem; /* Reduced from 1.2rem */
  pointer-events: none;
  animation: float-up 1s ease-out forwards; /* Reduced from 1.5s */
  z-index: 1000;
}

@keyframes float-up {
  0% {
    opacity: 1;
    transform: translateY(0);
  }
  100% {
    opacity: 0;
    transform: translateY(-30px);
  }
}

/* Responsive improvements */
@media (min-width: 1024px) {
  /* Larger desktop screens */
  body[data-theme="dark"] {
    background: linear-gradient(135deg, #1a1a1a 0%, #101010 100%);
    background-attachment: fixed;
    background-image: url("back4.jpg"); /* Keep for dark mode on larger screens */
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
  }
  /* Light mode body for large screens */
  body:not([data-theme="dark"]) {
    background-image: url("light.webp"); /* Use light.webp for light mode on large screens */
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
  }

  .background-pattern {
    display: none;
  }
  main {
    max-width: 600px;
    padding: 3rem;
    margin: 2rem auto;
    border-radius: 30px;
  }
  .header h1 {
    font-size: 2.5rem;
  }
  .theme-toggle {
    top: 30px;
    right: 30px;
    padding: 10px;
    font-size: 16px;
  }
  .theme-icon {
    width: 24px;
    height: 24px;
  }
}

@media (max-width: 768px) {
  main {
    padding: 2rem;
    width: 95%;
  }

  .header h1 {
    font-size: 1.8rem;
  }

  .field-label {
    min-width: 120px;
    font-size: 0.9rem;
  }

  .field-icon {
    width: 28px;
    height: 28px;
    font-size: 12px;
    margin-right: 0.5rem;
  }

  .input-container {
    margin-left: 0.75rem;
  }

  .field-input {
    padding: 0.6rem 2.5rem 0.6rem 0.8rem;
    font-size: 0.95rem;
  }

  .copy-btn {
    padding: 5px 7px;
    min-width: 28px;
    height: 24px;
    font-size: 0.8rem;
  }
}

@media (max-width: 480px) {
  main {
    padding: 1.5rem;
    border-radius: 16px;
    margin: 1rem;
  }

  .header h1 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
  }

  .header p {
    font-size: 0.85rem;
  }

  .calculator {
    gap: 1rem;
  }

  #custom-value {
    padding: 0.8rem 1rem;
    font-size: 1rem;
    border-radius: 12px;
  }

  .results {
    padding: 1rem;
    border-radius: 16px;
  }

  .field-item {
    flex-direction: column;
    align-items: flex-start;
    margin-bottom: 1rem;
    gap: 0.4rem;
  }

  .field-label {
    min-width: unset;
    font-size: 0.9rem;
  }

  .field-icon {
    width: 24px;
    height: 24px;
    font-size: 11px;
    margin-right: 0.5rem;
  }

  .input-container {
    margin-left: 0;
    width: 100%;
  }

  .field-input {
    padding: 0.5rem 2rem 0.5rem 0.7rem;
    font-size: 0.9rem;
  }

  .copy-btn {
    right: 6px;
    padding: 4px 6px;
    min-width: 24px;
    height: 22px;
    font-size: 0.75rem;
  }

  .theme-toggle {
    top: 10px;
    right: 10px;
    padding: 6px;
    font-size: 12px;
  }

  .decorative-blob {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}