:root {
  --bg-base: #f0f4f8;
  --text-core: #1e293b;
  --text-muted: #64748b;
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.4);
  --glass-shadow: rgba(0, 0, 0, 0.05);

  --blob-1: #3b82f6;
  --blob-2: #8b5cf6;
  --blob-3: #ec4899;

  --btn-primary: #3b82f6;
  --btn-primary-hover: #2563eb;
  --btn-primary-text: #ffffff;

  --skeleton-start: #e2e8f0;
  --skeleton-end: #f1f5f9;
}

[data-theme="dark"] {
  --bg-base: #0f172a;
  --text-core: #f8fafc;
  --text-muted: #94a3b8;
  --glass-bg: rgba(30, 41, 59, 0.6);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: rgba(0, 0, 0, 0.3);

  --blob-1: #2563eb;
  --blob-2: #7c3aed;
  --blob-3: #db2777;

  --btn-primary: #3b82f6;
  --btn-primary-hover: #60a5fa;
  --btn-primary-text: #ffffff;

  --skeleton-start: #1e293b;
  --skeleton-end: #334155;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Inter", sans-serif;
  transition:
    background-color 0.4s ease,
    color 0.4s ease;
}

body {
  background-color: var(--bg-base);
  color: var(--text-core);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  position: relative;
}

/* Background Animated Blobs */
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  z-index: 0;
  opacity: 0.6;
  animation: float 10s infinite alternate cubic-bezier(0.45, 0, 0.55, 1);
}

.blob-1 {
  width: 400px;
  height: 400px;
  background: var(--blob-1);
  top: -100px;
  left: -100px;
}

.blob-2 {
  width: 300px;
  height: 300px;
  background: var(--blob-2);
  bottom: -50px;
  right: -50px;
  animation-delay: -3s;
}

.blob-3 {
  width: 250px;
  height: 250px;
  background: var(--blob-3);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: -6s;
}

@keyframes float {
  0% {
    transform: scale(1) translate(0, 0) rotate(0deg);
  }
  100% {
    transform: scale(1.1) translate(30px, -30px) rotate(15deg);
  }
}

/* Glassmorphism Container */
.glass-container {
  background: var(--glass-bg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--glass-border);
  box-shadow: 0 25px 50px -12px var(--glass-shadow);
  border-radius: 24px;
  padding: 2.5rem;
  width: 90%;
  max-width: 540px;
  z-index: 10;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  animation: fadeUp 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header-actions {
  display: flex;
  gap: 0.5rem;
}

.logo-wrapper {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  color: var(--blob-1);
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.05em;
  background: linear-gradient(135deg, var(--blob-1), var(--blob-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.icon-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.icon-btn:hover {
  background: rgba(100, 116, 139, 0.1);
  color: var(--text-core);
}

.content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  text-align: center;
}

.subtitle {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
  color: var(--text-muted);
}

.ip-cards-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  width: 100%;
}

.ip-card {
  background: rgba(255, 255, 255, 0.4);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

[data-theme="dark"] .ip-card {
  background: rgba(30, 41, 59, 0.4);
}

.card-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.copy-icon-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.4rem;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.copy-icon-btn:hover {
  background: rgba(100, 116, 139, 0.1);
  color: var(--text-core);
}

.ip-display-wrapper {
  width: 100%;
  height: 50px;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.skeleton {
  width: 80%;
  height: 36px;
  border-radius: 12px;
  background: linear-gradient(
    90deg,
    var(--skeleton-start) 25%,
    var(--skeleton-end) 50%,
    var(--skeleton-start) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

.ip-address {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  opacity: 1;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition:
    opacity 0.4s ease,
    transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.ip-address.hidden {
  opacity: 0;
  transform: scale(0.95);
  pointer-events: none;
  position: absolute;
}

.skeleton.hidden {
  opacity: 0;
  position: absolute;
  pointer-events: none;
}

.actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  width: 100%;
}

.btn {
  padding: 0.875rem 1.5rem;
  border-radius: 14px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: none;
  transition: all 0.2s ease;
  flex: 1;
}

.btn-primary {
  background: var(--btn-primary);
  color: var(--btn-primary-text);
  box-shadow: 0 4px 14px 0 rgba(59, 130, 246, 0.39);
}

.btn-primary:hover {
  background: var(--btn-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.23);
}

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

.btn-secondary {
  flex: 0 0 auto;
  background: rgba(100, 116, 139, 0.1);
  color: var(--text-core);
  padding: 0.875rem;
}

.btn-secondary:hover {
  background: rgba(100, 116, 139, 0.2);
}

.refresh-icon {
  transition: transform 0.4s ease;
}

.btn-secondary:active .refresh-icon {
  transform: rotate(180deg);
}

.toast {
  position: absolute;
  bottom: -40px;
  background: var(--text-core);
  color: var(--bg-base);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  opacity: 1;
  transform: translateY(0);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 20;
}

.toast.hidden {
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
}

footer {
  display: flex;
  justify-content: center;
  border-top: 1px solid var(--glass-border);
  padding-top: 1.5rem;
}

.status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #f59e0b;
  box-shadow: 0 0 8px #f59e0b;
  animation: pulse 2s infinite;
}

.status-dot.active {
  background-color: #10b981;
  box-shadow: 0 0 8px #10b981;
  animation: none;
}

.status-dot.error {
  background-color: #ef4444;
  box-shadow: 0 0 8px #ef4444;
  animation: none;
}

@keyframes pulse {
  0% {
    opacity: 0.6;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 0.6;
  }
}

/* FAQ Overlay */
.faq-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 100;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 1;
  visibility: visible;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.faq-overlay.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.faq-modal {
  width: 90%;
  max-width: 600px;
  max-height: 85vh;
  overflow-y: auto;
  margin: auto;
  transform: translateY(0);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  padding: 2.5rem 2rem;
}

.faq-overlay.hidden .faq-modal {
  transform: translateY(30px);
}

.faq-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--glass-border);
}

.faq-header h2 {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-core);
}

.faq-content {
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
  text-align: left;
}

.faq-item h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-core);
}

.faq-item p {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-muted);
}