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

:root {
  --bg-color: #050505;
  --text-main: #ffffff;
  --text-muted: #a1a1aa;
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-hover: rgba(255, 255, 255, 0.05);
  --glow-color: rgba(99, 102, 241, 0.15); /* Soft indigo glow */
  --accent: #6366f1;
  --accent-hover: #4f46e5;
  --danger: #ef4444;
  --success: #10b981;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', sans-serif;
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  position: relative;
}

.hidden { display: none !important; }

.login-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.82);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 999;
}

.login-panel {
  width: min(400px, calc(100% - 2rem));
  padding: 2rem;
  border-radius: 16px;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 10px 35px rgba(0, 0, 0, 0.5);
}

.login-panel h2 {
  margin-bottom: 0.75rem;
}

.login-panel p {
  margin-bottom: 1rem;
  color: var(--text-muted);
}

.login-panel label {
  display: block;
  margin-top: 0.75rem;
  margin-bottom: 0.25rem;
  font-size: 0.9rem;
  text-align: left;
}

.login-panel input {
  width: 100%;
  margin-bottom: 0.75rem;
  padding: 0.8rem 0.9rem;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.login-error {
  color: var(--danger);
  margin-top: 0.75rem;
  font-size: 0.9rem;
  min-height: 1.2rem;
}

/* Animated Dark Gradient Background */
body::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 50% 0%, var(--glow-color), transparent 50%);
  pointer-events: none;
  z-index: -1;
  animation: pulseGlow 8s ease-in-out infinite alternate;
}

@keyframes pulseGlow {
  0% { opacity: 0.5; transform: scale(1); }
  100% { opacity: 0.8; transform: scale(1.1); }
}

/* Layout */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.center-all {
  justify-content: center;
  align-items: center;
}

/* Typography */
h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.05em;
  margin-bottom: 1rem;
  text-align: center;
  background: linear-gradient(180deg, #fff, #a1a1aa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

p.subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 4rem;
  font-weight: 400;
}

/* Glassmorphism Classes */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

/* Cards Grid (Homepage) */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  width: 100%;
}

.card {
  padding: 2rem;
  text-decoration: none;
  color: inherit;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  position: relative;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-8px);
  background: var(--glass-hover);
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: 0 10px 40px var(--glow-color);
}

.card h2 {
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.card p {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.5;
}

/* Inner Glow Effect */
.card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background: radial-gradient(circle at center, rgba(255,255,255,0.05) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}
.card:hover::after {
  opacity: 1;
}

/* Header for Tools Pages */
.tool-header {
  width: 100%;
  margin-bottom: 3rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s ease;
}

.back-link:hover {
  color: var(--text-main);
}

.tool-title {
  text-align: center;
  margin-bottom: 1rem;
  font-size: 2.5rem;
}

/* Tool Workspace */
.tool-workspace {
  padding: 2rem;
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
}

/* Form Elements */
textarea, input[type="text"], input[type="file"] {
  width: 100%;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  border-radius: 12px;
  padding: 1rem;
  font-size: 1rem;
  transition: all 0.3s ease;
  outline: none;
}

textarea:focus, input[type="text"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 15px rgba(99, 102, 241, 0.3);
  background: rgba(0, 0, 0, 0.4);
}

textarea {
  min-height: 250px;
  resize: vertical;
  margin-bottom: 1.5rem;
}

/* Buttons */
.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.btn {
  background: linear-gradient(135deg, rgba(255,255,255,0.05), rgba(255,255,255,0.01));
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  backdrop-filter: blur(5px);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn:hover {
  background: var(--glass-hover);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  border: none;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--accent-hover), var(--accent));
  box-shadow: 0 5px 20px rgba(99, 102, 241, 0.4);
}

/* Stats / Results Area */
.results-area {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--glass-border);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.stat-box {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-value {
  font-size: 1.25rem;
  font-weight: 600;
}

/* Image Compressor specific */
.upload-area {
  border: 2px dashed var(--glass-border);
  border-radius: 12px;
  padding: 3rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-bottom: 2rem;
}

.upload-area:hover, .upload-area.dragover {
  border-color: var(--accent);
  background: rgba(99, 102, 241, 0.05);
}

.upload-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.7;
}

#imagePreviewContainer {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

#compressedPreview {
  max-width: 100%;
  max-height: 400px;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
}

/* Link Cleaner specific */
.result-box {
  display: none;
  margin-top: 1.5rem;
  padding: 1.5rem;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: 12px;
  word-break: break-all;
}

.result-box.active {
  display: block;
}

.result-link {
  color: var(--success);
  margin-bottom: 1rem;
  display: block;
}

/* Animations */
.fade-in {
  opacity: 0;
  animation: fadeIn 0.6s ease forwards;
}

.slide-up {
  opacity: 0;
  transform: translateY(30px);
  animation: slideUp 0.6s ease forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }

@keyframes fadeIn {
  to { opacity: 1; }
}

@keyframes slideUp {
  to { opacity: 1; transform: translateY(0); }
}

/* Loader */
.loader {
  display: none;
  width: 24px;
  height: 24px;
  border: 3px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spin 1s ease-in-out infinite;
  margin: 0 auto;
}

.loader.active {
  display: inline-block;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  padding: 1rem 1.5rem;
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  pointer-events: none;
  z-index: 1000;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 1rem;
  }
  
  .cards-grid {
    grid-template-columns: 1fr;
  }
  
  .btn-group {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
  }
  
  textarea {
    min-height: 200px;
  }
  
  .results-area {
    flex-direction: column;
    align-items: flex-start;
  }
}