/* style.css - Premium Modern Design System for Artifact Download SPA */

:root {
  --bg-main: #0a0c10;
  --bg-card: rgba(18, 22, 32, 0.65);
  --border-card: rgba(255, 255, 255, 0.06);
  --border-card-hover: rgba(255, 255, 255, 0.15);
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  --accent-primary: #6366f1; /* Indigo */
  --accent-primary-hover: #4f46e5;
  --accent-secondary: #a855f7; /* Purple */
  --accent-glow: rgba(99, 102, 241, 0.3);
  
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  
  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', SFMono-Regular, Consolas, monospace;
}

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

body {
  background-color: var(--bg-main);
  background-image: 
    radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.1) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(168, 85, 247, 0.1) 0px, transparent 50%),
    radial-gradient(at 50% 50%, rgba(10, 12, 16, 1) 0px, rgba(16, 20, 30, 0.8) 100%);
  color: var(--text-primary);
  font-family: var(--font-sans);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.5;
  overflow-x: hidden;
}

header {
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background-color: rgba(10, 12, 16, 0.5);
  border-bottom: 1px solid var(--border-card);
  padding: 1.25rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.logo-icon {
  width: 2.25rem;
  height: 2.25rem;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 15px var(--accent-glow);
}

.logo-text {
  font-weight: 700;
  font-size: 1.25rem;
  background: linear-gradient(to right, #ffffff, #d1d5db);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.025em;
}

.auth-panel {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: rgba(255, 255, 255, 0.03);
  padding: 0.375rem 0.875rem 0.375rem 0.5rem;
  border-radius: 50px;
  border: 1px solid var(--border-card);
}

.user-avatar {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.user-name {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
}

/* Base button styles */
.btn {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.875rem;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  border: 1px solid transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.2);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

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

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border-color: var(--border-card);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--border-card-hover);
}

.btn-danger {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.btn-danger:hover {
  background: var(--danger);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.2);
}

.main-content {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem 1.5rem;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
}

/* Card container */
.artifact-card {
  width: 100%;
  max-width: 760px;
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-card);
  border-radius: 1.25rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s;
}

.artifact-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(to right, var(--accent-primary), var(--accent-secondary));
}

.artifact-card:hover {
  border-color: rgba(255, 255, 255, 0.12);
}

/* Hero Info Header within Card */
.artifact-header {
  margin-bottom: 2rem;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
}

.artifact-title-area {
  flex: 1;
}

.repo-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  background: rgba(99, 102, 241, 0.1);
  color: #c7d2fe;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  padding: 0.25rem 0.75rem;
  border-radius: 50px;
  border: 1px solid rgba(99, 102, 241, 0.2);
  margin-bottom: 0.75rem;
}

.artifact-filename {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.25;
  color: #ffffff;
  word-break: break-all;
}

.badge-status {
  padding: 0.25rem 0.75rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-active {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.badge-expired {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

/* Grid Layout for details */
.metadata-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 2.5rem;
}

@media (max-width: 600px) {
  .metadata-grid {
    grid-template-columns: 1fr;
  }
  .artifact-header {
    flex-direction: column;
    align-items: stretch;
  }
}

.meta-item {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-card);
  padding: 1rem;
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: all 0.2s;
}

.meta-item:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--border-card-hover);
  transform: translateY(-1px);
}

.meta-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 0.5rem;
  color: var(--text-secondary);
}

.meta-content {
  flex: 1;
  min-width: 0;
}

.meta-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.125rem;
}

.meta-value {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.meta-value.code {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: #e5e7eb;
}

.copy-container {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  max-width: 100%;
}

.btn-copy {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem;
  border-radius: 0.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.btn-copy:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.08);
}

.meta-link {
  color: var(--accent-primary);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

.meta-link:hover {
  text-decoration: underline;
  color: #818cf8;
}

/* Large Action Section */
.action-box {
  background: rgba(99, 102, 241, 0.03);
  border: 1px dashed rgba(99, 102, 241, 0.25);
  border-radius: 1rem;
  padding: 2rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.download-large-btn {
  padding: 0.875rem 2.5rem;
  font-size: 1.0625rem;
  width: 100%;
  max-width: 320px;
  border-radius: 0.75rem;
  height: 3.25rem;
}

.download-info-text {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

/* Skeleton Loading Elements */
.skeleton-title {
  height: 2.25rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 0.5rem;
  margin-bottom: 0.75rem;
  width: 70%;
  animation: pulse 1.5s infinite ease-in-out;
}

.skeleton-badge {
  height: 1.5rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50px;
  width: 100px;
  margin-bottom: 0.75rem;
  animation: pulse 1.5s infinite ease-in-out;
}

.skeleton-meta-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.skeleton-meta-item {
  height: 4.625rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-card);
  border-radius: 0.75rem;
  animation: pulse 1.5s infinite ease-in-out;
}

.skeleton-action {
  height: 7.25rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-card);
  border-radius: 1rem;
  animation: pulse 1.5s infinite ease-in-out;
}

@keyframes pulse {
  0% {
    opacity: 0.6;
  }
  50% {
    opacity: 0.3;
  }
  100% {
    opacity: 0.6;
  }
}

/* Error States */
.error-card {
  text-align: center;
  padding: 3rem 2rem;
  background: rgba(18, 22, 32, 0.8);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.error-card::before {
  background: linear-gradient(to right, var(--danger), #f87171);
}

.error-icon {
  font-size: 3rem;
  color: var(--danger);
  margin-bottom: 1.5rem;
}

.error-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: #ffffff;
}

.error-desc {
  color: var(--text-secondary);
  max-width: 440px;
  margin: 0 auto 2rem auto;
  font-size: 0.9375rem;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  z-index: 1000;
}

.toast {
  background: rgba(18, 22, 32, 0.95);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-card);
  border-radius: 0.5rem;
  padding: 0.75rem 1.25rem;
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  transform: translateY(100px);
  opacity: 0;
  animation: slideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.toast-success {
  border-left: 3px solid var(--success);
}

.toast-error {
  border-left: 3px solid var(--danger);
}

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

/* Spinner Loader */
.spinner {
  width: 1.25rem;
  height: 1.25rem;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: #ffffff;
  animation: spin 0.8s linear infinite;
}

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

/* Utilities */
.hidden {
  display: none !important;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Footer rules */
footer {
  text-align: center;
  padding: 2rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  border-top: 1px solid rgba(255, 255, 255, 0.03);
  margin-top: auto;
}