/* ========================================
   Design System - Self Host Godot Game
   ======================================== */

:root {
  /* Colors - Deep purple/blue palette */
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --bg-glass: rgba(255, 255, 255, 0.05);
  --bg-glass-border: rgba(255, 255, 255, 0.08);

  --text-primary: #e8e8ed;
  --text-secondary: #8b8b9e;
  --text-muted: #555568;

  --accent-primary: #667eea;
  --accent-secondary: #764ba2;
  --accent-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --accent-glow: rgba(102, 126, 234, 0.3);

  --success: #34d399;
  --warning: #fbbf24;
  --danger: #f87171;
  --danger-bg: rgba(248, 113, 113, 0.1);

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

/* ========================================
   Reset & Base
   ======================================== */

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

html, body {
  height: 100%;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ========================================
   Screen Management
   ======================================== */

.screen {
  display: none;
  min-height: 100vh;
}

.screen.active {
  display: block;
  animation: fadeIn 0.4s ease;
}

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

/* ========================================
   Login Screen
   ======================================== */

#login-screen {
  display: none;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  position: relative;
  overflow: hidden;
}

#login-screen.active {
  display: flex;
}

.login-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  animation: orbFloat 20s ease-in-out infinite;
}

.orb-1 {
  width: 500px;
  height: 500px;
  background: rgba(102, 126, 234, 0.15);
  top: -150px;
  right: -100px;
  animation-delay: 0s;
}

.orb-2 {
  width: 400px;
  height: 400px;
  background: rgba(118, 75, 162, 0.12);
  bottom: -100px;
  left: -100px;
  animation-delay: -7s;
}

.orb-3 {
  width: 300px;
  height: 300px;
  background: rgba(102, 126, 234, 0.08);
  top: 50%;
  left: 50%;
  animation-delay: -14s;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(50px, -30px) scale(1.1); }
  50% { transform: translate(-30px, 50px) scale(0.95); }
  75% { transform: translate(20px, 20px) scale(1.05); }
}

.login-container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 420px;
  padding: var(--space-lg);
}

.login-card {
  background: var(--bg-glass);
  backdrop-filter: blur(40px);
  -webkit-backdrop-filter: blur(40px);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  text-align: center;
  animation: cardSlideUp 0.6s ease;
}

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

.login-logo {
  margin-bottom: var(--space-lg);
}

.login-logo svg {
  filter: drop-shadow(0 4px 20px var(--accent-glow));
}

.login-title {
  font-size: 1.75rem;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-xs);
}

.login-subtitle {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-bottom: var(--space-xl);
}

/* ========================================
   Form Elements
   ======================================== */

.input-group {
  text-align: left;
  margin-bottom: var(--space-md);
}

.input-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.input-group input,
.input-group select,
.input-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.input-group input::placeholder,
.input-group textarea::placeholder {
  color: var(--text-muted);
}

.input-group input:focus,
.input-group select:focus,
.input-group textarea:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.input-group select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%238b8b9e' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

.input-group select option {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.input-group textarea {
  resize: vertical;
  min-height: 80px;
}

.input-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

/* ========================================
   Buttons
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.65rem 1.25rem;
  border: none;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: 0 2px 12px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--accent-glow);
}

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

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

.btn-danger {
  background: var(--danger);
  color: #fff;
}

.btn-danger:hover {
  background: #ef4444;
  transform: translateY(-1px);
}

.btn-sm {
  padding: 0.4rem 0.85rem;
  font-size: 0.8rem;
}

.btn-full {
  width: 100%;
}

.btn-icon {
  font-size: 1.1rem;
  line-height: 1;
}

.btn-icon-sm {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 1.2rem;
  padding: 2px 6px;
  border-radius: 4px;
  transition: all var(--transition-fast);
}

.btn-icon-sm:hover {
  color: var(--danger);
  background: var(--danger-bg);
}

.btn-loader {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

.error-msg {
  color: var(--danger);
  font-size: 0.85rem;
  padding: var(--space-sm) 0;
  text-align: center;
}

/* ========================================
   Header
   ======================================== */

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-xl);
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.header-title {
  font-size: 1.1rem;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.admin-badge {
  font-size: 0.8rem;
  color: var(--text-secondary);
  padding: 0.25rem 0.75rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 100px;
}

/* ========================================
   Main Content
   ======================================== */

.main {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-xl);
}

/* Stats Bar */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.stat-card {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.stat-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.stat-icon {
  font-size: 1.8rem;
}

.stat-value {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* Section Header */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
}

.section-header h3 {
  font-size: 1.25rem;
  font-weight: 600;
}

/* ========================================
   Game Cards
   ======================================== */

.games-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-lg);
}

.game-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.game-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent-gradient);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.game-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.game-card:hover::before {
  opacity: 1;
}

.game-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--space-md);
}

.game-title {
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.3;
}

.game-badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

.game-badge.public {
  background: rgba(52, 211, 153, 0.15);
  color: var(--success);
}

.game-badge.private {
  background: rgba(251, 191, 36, 0.15);
  color: var(--warning);
}

.game-desc {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-bottom: var(--space-md);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.game-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
  flex-wrap: wrap;
}

.game-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}

.game-actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.game-actions .btn {
  flex: 1 1 auto;
  white-space: nowrap;
}

/* ========================================
   Empty State
   ======================================== */

.empty-state {
  text-align: center;
  padding: var(--space-2xl) var(--space-xl);
}

.empty-icon {
  font-size: 3rem;
  margin-bottom: var(--space-md);
  animation: rocketBounce 2s ease-in-out infinite;
}

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

.empty-state h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

.empty-state p {
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

/* ========================================
   Modal
   ======================================== */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: var(--space-lg);
  animation: overlayFadeIn 0.2s ease;
}

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

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  padding: var(--space-xl);
  animation: modalSlideUp 0.3s ease;
}

@keyframes modalSlideUp {
  from { opacity: 0; transform: translateY(20px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-sm {
  max-width: 400px;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
}

.modal-header h3 {
  font-size: 1.15rem;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0 4px;
  line-height: 1;
  transition: color var(--transition-fast);
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-body-text {
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

.modal-actions {
  display: flex;
  gap: var(--space-sm);
  justify-content: flex-end;
  margin-top: var(--space-lg);
}

/* ========================================
   Drop Zone
   ======================================== */

.drop-zone {
  position: relative;
  border: 2px dashed rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
}

.drop-zone:hover,
.drop-zone.dragover {
  border-color: var(--accent-primary);
  background: rgba(102, 126, 234, 0.05);
}

.drop-zone.dragover {
  transform: scale(1.02);
}

.drop-input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.drop-icon {
  font-size: 2rem;
  display: block;
  margin-bottom: var(--space-sm);
}

.drop-text {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.drop-hint {
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-top: var(--space-xs);
}

.file-info {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  margin-top: var(--space-sm);
}

.file-name {
  font-size: 0.85rem;
  font-weight: 500;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-size {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* ========================================
   Progress Bar
   ======================================== */

.progress-container {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.progress-bar {
  flex: 1;
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 3px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--accent-gradient);
  border-radius: 3px;
  width: 0%;
  transition: width 0.3s ease;
}

.progress-text {
  font-size: 0.8rem;
  color: var(--text-secondary);
  min-width: 40px;
  text-align: right;
}

/* ========================================
   Toast Notifications
   ======================================== */

.toast-container {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.toast {
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-secondary);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
  animation: toastSlideIn 0.3s ease;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  max-width: 380px;
}

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

@keyframes toastSlideIn {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}

.toast-exit {
  animation: toastSlideOut 0.3s ease forwards;
}

@keyframes toastSlideOut {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(40px); }
}

/* ========================================
   Utilities
   ======================================== */

.hidden {
  display: none !important;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* ========================================
   Responsive
   ======================================== */

@media (max-width: 768px) {
  .main {
    padding: var(--space-md);
  }

  .games-grid {
    grid-template-columns: 1fr;
  }

  .section-header {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-md);
  }

  .input-row {
    grid-template-columns: 1fr;
  }

  .stats-bar {
    grid-template-columns: 1fr;
  }

  .header {
    padding: var(--space-md);
  }

  .modal {
    padding: var(--space-lg);
  }
}

@media (max-width: 480px) {
  .game-actions {
    flex-direction: column;
  }

  .game-actions .btn {
    width: 100%;
  }
}