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

:root {
  --primary-color: #7C9CBF;
  --primary-hover: #8BAFD1;
  --background-dark: #000000;
  --surface-dark: #0A0A0A;
  --text-primary: #E9ECEF;
  --text-secondary: #868E96;
  --error-color: #E64980;
  --success-color: #51CF66;
  --border-radius: 4px;
  --transition-speed: 0.3s;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --glow-primary: 0 0 20px rgba(124, 156, 191, 0.2);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

h1 {
  font-size: 3.5rem;
  margin-bottom: 2rem;
  text-align: center;
  color: var(--text-primary);
  font-weight: 800;
  letter-spacing: -0.05em;
  text-transform: uppercase;
  position: relative;
  padding-bottom: 1rem;
  animation: titleFadeIn 1s ease-out 0.1s both;
}

h1::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 100px;
  height: 4px;
  background-color: var(--primary-color);
}

body {
  background: linear-gradient(135deg, 
    var(--background-dark) 0%,
    #0A0A0A 25%,
    #1A1A1A 50%,
    #0A0A0A 75%,
    var(--background-dark) 100%
  );
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 2rem;
  position: relative;
  overflow-x: hidden;
  animation: pageFadeIn 1s ease-out;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 20%, rgba(124, 156, 191, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(81, 207, 102, 0.05) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
  animation: gradientShift 15s ease-in-out infinite alternate;
}

.container {
  background-color: var(--surface-dark);
  padding: 3rem;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
  border-left: 2px solid var(--primary-color);
  border-right: 2px solid var(--primary-color);
  min-height: auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  box-shadow: var(--shadow-lg), var(--glow-primary);
  background: linear-gradient(180deg,
    rgba(10, 10, 10, 0.95) 0%,
    rgba(0, 0, 0, 0.98) 100%
  );
  backdrop-filter: blur(10px);
  border-radius: var(--border-radius);
  animation: containerFadeIn 1s ease-out 0.2s both;
  margin-top: 2rem;
}

.content-container {
  background-color: rgba(255, 255, 255, 0.02);
  padding: 2rem;
  border-radius: var(--border-radius);
  border: 1px solid rgba(255, 255, 255, 0.05);
  margin: 0 auto;
  width: 100%;
  max-width: 800px;
  position: relative;
  transition: all var(--transition-speed);
  animation: contentFadeIn 1s ease-out 0.4s both;
}

.content-container:hover {
  border-color: rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: 2rem;
  position: relative;
  animation: fadeInUp 0.8s ease-out 0.6s both;
  transition: opacity 1s ease;
}

.form-group.fade-out {
  animation: fadeOutContainer 2s ease-in forwards;
}

.form-group.fade-in {
  animation: fadeInContainer 2s ease-out forwards;
}

label {
  display: block;
  margin-bottom: 0.75rem;
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: color var(--transition-speed);
}

input[type="file"], 
input[type="number"] {
  width: 100%;
  padding: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background-color: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
  font-size: 1rem;
  transition: all var(--transition-speed);
  border-radius: var(--border-radius);
}

input[type="file"]:focus, 
input[type="number"]:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(124, 156, 191, 0.2);
  background-color: rgba(255, 255, 255, 0.05);
}

button {
  width: 100%;
  padding: 1.25rem;
  border: none;
  background-color: var(--primary-color);
  color: white;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-speed) cubic-bezier(0.4, 0, 0.2, 1);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  position: relative;
  overflow: hidden;
  z-index: 1;
  border-radius: var(--border-radius);
}

button.fade-out {
  animation: fadeOutContainer 2s ease-in forwards;
}

button.fade-in {
  animation: fadeInContainer 2s ease-out forwards;
}

button::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #E64980;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: -1;
}

button::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
  z-index: 1;
}

button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md), var(--glow-primary);
}

button:hover::before {
  transform: scaleX(1);
  transform-origin: left;
}

button:hover::after {
  transform: translateX(100%);
}

button:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.progress {
  margin-top: 2rem;
  display: none;
  animation: fadeInUp 0.8s ease-out 0.6s both;
  opacity: 1;
}

.progress.fade-out-progress {
  animation: fadeOutProgress 0.5s ease-in forwards !important;
}

.progress.fade-in-progress {
  animation: fadeInProgress 0.5s ease-out forwards !important;
  opacity: 0;
}

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

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

/* Custom Scrollbar Styles */








#progress-bar {
  width: 100%;
  background-color: rgba(255, 255, 255, 0.05);
  padding: 2px;
  border-radius: var(--border-radius);
  overflow: hidden;
}

#progress-bar-fill {
  display: block;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--primary-hover));
  border-radius: var(--border-radius);
  transition: width 100ms ease-out;
  width: 0%;
  position: relative;
}

#progress-bar-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  animation: progressShine 1.5s linear infinite;
}

#progress-status {
  text-align: left;
  margin-top: 1rem;
  color: var(--text-secondary);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.success-message {
  margin-top: 2rem;
  padding: 1.5rem;
  background-color: rgba(81, 207, 102, 0.1);
  border: 1px solid var(--success-color);
  color: var(--success-color);
  border-radius: var(--border-radius);
  animation: fadeInUp 0.5s ease-out;
}

.success-message a {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background-color: var(--primary-color);
  color: white;
  text-decoration: none;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: all var(--transition-speed);
  margin-top: 1rem;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.success-message a::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #E64980;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: -1;
}

.success-message a::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
  z-index: 1;
}

.success-message a:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md), var(--glow-primary);
}

.success-message a:hover::before {
  transform: scaleX(1);
  transform-origin: left;
}

.success-message a:hover::after {
  transform: translateX(100%);
}

.success-message a:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.error-message {
  margin-top: 2rem;
  padding: 1.5rem;
  background-color: rgba(230, 73, 128, 0.1);
  border: 1px solid var(--error-color);
  color: var(--error-color);
  border-radius: var(--border-radius);
  animation: fadeInUp 0.5s ease-out;
}

.warning-message {
  border: 2px solid var(--error-color);
  background-color: rgba(230, 73, 128, 0.1);
  padding: 1.5rem;
  margin: 2rem 0;
  color: var(--error-color);
  border-radius: var(--border-radius);
  animation: fadeInUp 0.5s ease-out;
}

.warning-message a {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background-color: var(--primary-color);
  color: white;
  text-decoration: none;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: all var(--transition-speed);
  margin-top: 1rem;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.warning-message a::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #E64980;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: -1;
}

.warning-message a::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
  z-index: 1;
}

.warning-message a:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md), var(--glow-primary);
}

.warning-message a:hover::before {
  transform: scaleX(1);
  transform-origin: left;
}

.warning-message a:hover::after {
  transform: translateX(100%);
}

.warning-message a:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.warning-text {
  color: var(--error-color);
  font-weight: bold;
}

/* Drag and Drop Styles */
.drop-zone {
  width: 100%;
  min-height: 200px;
  padding: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 1rem;
  cursor: pointer;
  color: var(--text-secondary);
  border: 2px dashed rgba(255, 255, 255, 0.1);
  transition: min-height 0.5s cubic-bezier(0.4, 0, 0.2, 1), 
              padding 0.5s cubic-bezier(0.4, 0, 0.2, 1),
              border-color 0.3s ease,
              background-color 0.3s ease,
              box-shadow 0.3s ease;
  background-color: rgba(255, 255, 255, 0.02);
  margin-bottom: 2rem;
  border-radius: var(--border-radius);
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.8s ease-out 1s both;
}

.drop-zone::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.03), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.drop-zone:hover::before {
  transform: translateX(100%);
}

.drop-zone.highlight {
  border-color: var(--primary-color);
  color: var(--primary-color);
  background-color: rgba(124, 156, 191, 0.1);
  box-shadow: var(--shadow-sm), var(--glow-primary);
}

.drop-zone.fade-out {
  animation: fadeOutContainer 2s ease-in forwards;
}

.drop-zone.fade-in {
  animation: fadeInContainer 2s ease-out forwards;
}

.drop-zone.has-file {
  border-color: var(--success-color);
  color: var(--success-color);
  background-color: rgba(81, 207, 102, 0.1);
  box-shadow: var(--shadow-sm);
  padding: 1.5rem 2rem;
  min-height: auto;
}

@keyframes fadeOutContainer {
  from {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
  to {
    opacity: 0;
    transform: scale(0.95) translateY(-10px);
  }
}

@keyframes fadeInContainer {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.drop-zone-content {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: opacity 0.3s ease 0.2s;
}

.drop-zone.has-file .drop-zone-content {
  animation: fadeInContent 0.5s ease-out forwards;
}

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

.drop-zone input[type="file"] {
  display: none;
}

.drop-zone p {
  margin: 0.5rem 0;
  transition: color var(--transition-speed);
}

.drop-zone:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
  background-color: rgba(124, 156, 191, 0.1);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.drop-zone .file-name {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  word-break: break-all;
  animation: fadeInUp 0.4s ease-out 0.1s both;
}

.drop-zone .file-size {
  color: var(--text-secondary);
  font-size: 0.9em;
  margin-bottom: 0.5rem;
  animation: fadeInUp 0.4s ease-out 0.2s both;
}

.drop-zone .click-to-change {
  color: var(--text-secondary);
  font-size: 0.8em;
  font-style: italic;
  animation: fadeInUp 0.4s ease-out 0.3s both;
}

.drop-zone .upload-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 1rem;
  stroke: var(--text-secondary);
  transition: all var(--transition-speed);
}

.drop-zone:hover .upload-icon,
.drop-zone.highlight .upload-icon {
  stroke: var(--primary-color);
  transform: translateY(-4px);
}

.drop-zone.has-file .upload-icon {
  stroke: var(--success-color);
}

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

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

@keyframes progressShine {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

@keyframes pageFadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

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

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

/* Responsive design */
@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
  }

  h1::after {
    width: 80px;
  }

  body {
    padding: 1rem;
  }

  .container {
    padding: 1.5rem;
    border-left: none;
    border-right: none;
    margin-top: 1rem;
  }
  
  .content-container {
    padding: 1.5rem;
  }
  
  .drop-zone {
    min-height: 150px;
    padding: 1.5rem;
  }
  
  button {
    padding: 1rem;
  }

  .home {
    top: 1rem;
    right: 1rem;
  }
}

.home {
  position: fixed;
  top: 2rem;
  right: 2rem;
  background-color: transparent;
  width: 48px;
  height: 48px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-speed);
  z-index: 2;
  border: none;
  cursor: pointer;
}

.home:hover {
  transform: scale(1.1);
}

.home svg {
  width: 24px;
  height: 24px;
  stroke: var(--text-primary);
  transition: stroke var(--transition-speed);
}

.home:hover svg {
  stroke: var(--primary-color);
}