@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

:root {
  --primary-color: #121212;
  --accent-color: #3d5afe;
  --light-accent: #e8eaff;
  --bg-color: #ffffff;
  --card-bg: #f8f9fa;
  --shadow-color: rgba(0, 0, 0, 0.08);
  --border-radius: 12px;
  --transition: all 0.3s ease;
  --text-color: #333;
  --secondary-text: #666;
  --border-color: #e0e0e0;
}

body.dark-theme {
  --primary-color: #f8f9fa;
  --accent-color: #5c7cff;
  --light-accent: #2a3052;
  --bg-color: #121212;
  --card-bg: #1e1e1e;
  --shadow-color: rgba(0, 0, 0, 0.25);
  --text-color: #e0e0e0;
  --secondary-text: #aaaaaa;
  --border-color: #333;
  --range-bg: #3a4064;
  --input-bg: #2a2a2a;
}

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

body {
  font-family: 'Poppins', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  padding: 20px;
  text-align: center;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: background-color 0.5s ease, color 0.5s ease;
}

header {
  width: 100%;
  max-width: 900px;
  margin-bottom: 20px;
  animation: fadeIn 0.8s ease-in-out;
}

h1 {
  font-weight: 700;
  font-size: 2.2rem;
  margin: 15px 0 5px;
  background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: block;
}

.tagline {
  font-size: 1rem;
  color: var(--secondary-text);
  font-weight: 300;
  margin-bottom: 15px;
  display: block;
}

main {
  width: 100%;
  max-width: 1100px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

#controls {
  width: 100%;
  max-width: 900px;
  padding: 10px;
  animation: slideIn 0.5s ease-out;
}

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

.upload-section {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 20px 0;
  flex-wrap: wrap;
}

.upload-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 25px;
  background-color: #f0f5ff;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
  border: 2px dashed #6070ff;
  position: relative;
  overflow: hidden;
  width: 230px;
}

.dark-theme .upload-label {
  background-color: #2a3052;
  border: 2px dashed #5c7cff;
}

.upload-label i {
  font-size: 2rem;
  color: var(--accent-color);
  margin-bottom: 10px;
  transition: var(--transition);
}

.upload-label:hover {
  background-color: var(--accent-color);
  transform: translateY(-3px);
}

.upload-label:hover i,
.upload-label:hover span {
  color: white;
}

.upload-label span {
  color: var(--text-color);
  transition: var(--transition);
}

.animate-click {
  animation: clickPulse 0.3s ease;
}

@keyframes clickPulse {
  0% { transform: scale(1); }
  50% { transform: scale(0.95); }
  100% { transform: scale(1); }
}

input[type="file"] {
  opacity: 0;
  position: absolute;
  pointer-events: none;
}

#spinner {
  background: var(--light-accent);
  padding: 8px 12px;
  border-radius: var(--border-radius);
  color: var(--accent-color);
  font-weight: 500;
  box-shadow: 0 4px 8px var(--shadow-color);
  animation: pulse 2s infinite;
  display: none;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(61, 90, 254, 0.4); }
  70% { box-shadow: 0 0 0 10px rgba(61, 90, 254, 0); }
  100% { box-shadow: 0 0 0 0 rgba(61, 90, 254, 0); }
}

.settings {
  padding: 25px;
  border-radius: var(--border-radius);
  background: var(--card-bg);
  box-shadow: 0 5px 15px var(--shadow-color);
  width: 100%;
  max-width: 900px;
  margin: 16px auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 40px;
  transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.5s ease;
  text-align: left;
}

.controls-enabled .settings {
  animation: settingsLoaded 0.6s ease forwards;
}

@keyframes settingsLoaded {
  0% { transform: translateY(10px); opacity: 0.8; }
  100% { transform: translateY(0); opacity: 1; }
}

.settings-col {
  display: flex;
  flex-direction: column;
  gap: 25px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.settings-col:nth-child(3) {
  grid-column: span 2;
  margin-top: 10px;
}

.settings-col-hover {
  transform: translateY(-2px);
}

.settings-col h3 {
  font-size: 1.1rem;
  color: var(--primary-color);
  margin-bottom: 15px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--light-accent);
  display: flex;
  align-items: center;
  gap: 8px;
}

.settings-col h3 i {
  color: var(--accent-color);
}

.container {
  margin-bottom: 15px;
  display: flex;
  flex-direction: column;
  text-align: left;
}

label {
  font-weight: 500;
  margin-bottom: 12px;
  font-size: 0.9rem;
  color: var(--text-color);
  display: flex;
  align-items: center;
  gap: 6px;
}

label i {
  color: var(--accent-color);
}

.range-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  color: var(--secondary-text);
  margin-top: 5px;
}

input[type="range"] {
  width: 100%;
  height: 4px;
  background: #e0e6ff;
  border-radius: 10px;
  -webkit-appearance: none;
  outline: none;
  transition: background 0.3s ease;
}

.dark-theme input[type="range"] {
  background: #3a4064;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  background: var(--accent-color);
  border-radius: 50%;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.checkbox-container {
  flex-direction: row;
  align-items: center;
}

.bg-control {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  align-items: center;
}

.checkbox-wrapper {
  display: flex;
  align-items: center;
}

.color-picker {
  display: flex;
  flex-direction: column;
}

select, input[type="color"] {
  padding: 8px 12px;
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: 'Poppins', sans-serif;
  width: 100%;
  transition: var(--transition);
}

select:focus, input[type="color"]:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 2px var(--light-accent);
  outline: none;
}

input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-right: 8px;
  accent-color: var(--accent-color);
}

.result-container {
  width: 100%;
  max-width: 900px;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 30px;
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.result-loaded {
  opacity: 1;
  transform: translateY(0);
}

.canvas-wrapper {
  position: relative;
  width: 100%;
  display: flex;
  justify-content: center;
}

.canvas {
  margin: 25px auto;
  box-shadow: 0 10px 30px var(--shadow-color);
  border-radius: var(--border-radius);
  transition: var(--transition);
  max-width: 100%;
  height: auto;
  background-color: var(--bg-color);
}

.loading-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.8);
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: var(--border-radius);
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
  backdrop-filter: blur(3px);
}

body.dark-theme .loading-overlay {
  background: rgba(0, 0, 0, 0.7);
}

.loading-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.spinner-container {
  background: var(--card-bg);
  padding: 20px;
  border-radius: var(--border-radius);
  box-shadow: 0 10px 25px var(--shadow-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  animation: scaleIn 0.3s ease;
}

.spinner-container i {
  font-size: 2rem;
  color: var(--accent-color);
  margin-bottom: 10px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: white;
  background: var(--accent-color);
  text-decoration: none;
  padding: 12px 24px;
  border-radius: var(--border-radius);
  font-weight: 600;
  margin: 20px auto;
  box-shadow: 0 4px 12px rgba(61, 90, 254, 0.3);
  transition: var(--transition);
  transform: translateY(0);
  position: relative;
  overflow: hidden;
}

.button::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 5px;
  height: 5px;
  background: rgba(255, 255, 255, 0.8);
  opacity: 0;
  border-radius: 100%;
  transform: scale(1, 1) translate(-50%);
  transform-origin: 50% 50%;
}

.button-clicked::after {
  animation: ripple 0.6s ease-out;
}

@keyframes ripple {
  0% {
    transform: scale(0, 0);
    opacity: 0.5;
  }
  100% {
    transform: scale(20, 20);
    opacity: 0;
  }
}

.button:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(61, 90, 254, 0.4);
  background: #2a41db;
}

.button:active {
  transform: translateY(1px);
}

footer {
  margin-top: 40px;
  width: 100%;
  padding: 20px 0;
  display: flex;
  justify-content: center;
  align-items: center;
  color: var(--secondary-text);
  font-size: 0.9rem;
  font-weight: 300;
  position: relative;
}

.theme-toggle {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 50px;
  height: 50px;
  background: var(--accent-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 10px var(--shadow-color);
  transition: var(--transition);
  color: white;
  z-index: 100;
  opacity: 0.9;
}

.theme-toggle i {
  font-size: 1.5rem;
  transition: transform 0.5s ease;
}

.theme-toggle:hover {
  transform: rotate(15deg);
  opacity: 1;
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
}

.theme-toggle:active {
  transform: scale(0.95);
}

.opensource-link {
  display: inline-block;
  margin-left: 15px;
  color: rgba(0, 0, 0, 0.5);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

.download-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 15px;
}

.opensource-link:hover {
  color: rgba(0, 0, 0, 0.8);
}

.dark-theme .opensource-link {
  color: rgba(255, 255, 255, 0.5);
}

.dark-theme .opensource-link:hover {
  color: rgba(255, 255, 255, 0.8);
}

@keyframes scaleIn {
  from { transform: scale(0.9); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

@keyframes floatAnimation {
  0% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
  100% { transform: translateY(0); }
}

@media (max-width: 768px) {
  body {
    padding: 10px;
  }
  
  h1 {
    font-size: 1.8rem;
  }
  
.settings {
    padding: 15px;
    gap: 15px;
    grid-template-columns: 1fr;
  }
  
  .settings-col:nth-child(3) {
    grid-column: span 1;
  }
  
  .upload-section {
    flex-direction: column;
    align-items: center;
  }
  
  .upload-label {
    width: 100%;
    max-width: 280px;
    margin-bottom: 15px;
  }
  
  .theme-toggle {
    bottom: 10px;
    right: 10px;
    width: 40px;
    height: 40px;
  }
}

::selection {
  background: var(--light-accent);
  color: var(--accent-color);
}

.dark-theme select, 
.dark-theme input[type="color"] {
  background-color: var(--input-bg);
  border-color: #444;
}

.dark-theme .checkbox-container {
  color: var(--text-color);
}

.dark-theme .upload-label:hover {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
}

.dark-theme .upload-label:hover i,
.dark-theme .upload-label:hover span {
  color: white;
}

.dark-theme select {
  background-color: var(--input-bg);
  border-color: #444;
  color: var(--text-color);
}

.dark-theme input[type="range"]::-webkit-slider-thumb {
  background: var(--accent-color);
}

.dark-theme input[type="color"] {
  background-color: var(--input-bg);
  border: 1px solid #444;
}

.dark-theme input[type="checkbox"] {
  accent-color: var(--accent-color);
}

.dark-theme .range-labels {
  color: var(--secondary-text);
}

.dark-theme #c1 {
  color: var(--text-color);
}