/* ===== COLORES UNIFICADOS CON LANDING ===== */
:root {
  --bg-primary: #0a0a0b;
  --bg-secondary: #111113;
  --bg-card: #16161a;
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  --text-muted: #52525b;
  --accent: #6366f1;
  --accent-glow: rgba(99, 102, 241, 0.4);
  --accent-secondary: #8b5cf6;
  --success: #10b981;
  --warning: #f59e0b;
  --border: rgba(255, 255, 255, 0.08);
  --radius: 16px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
}

/* ===== HEADER CON LOGO Y SLOGAN ===== */
.header {
  text-align: center;
  margin-bottom: 2rem;
  padding: 2rem 0;
}

.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-size: 2.5rem;
  font-weight: 700;
}

.logo-icon {
  font-size: 2.5rem;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  overflow: hidden;
}
.logo-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 12px;
}

.logo-text {
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-slogan {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 400;
  font-style: italic;
  display: block;
  margin-top: 0.25rem;
}

.subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-top: 0.5rem;
}

/* ===== NAV ===== */
.nav-links {
  display: flex;
  gap: 24px;
  justify-content: center;
  margin-top: 1rem;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--accent);
}

/* ===== CARDS ===== */
.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border);
  transition: border-color 0.2s;
}

.card:hover {
  border-color: rgba(99, 102, 241, 0.3);
}

.card-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.step-number {
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 600;
  color: white;
}

/* ===== SKILLS GRID ===== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 12px;
}

.skill-option {
  background: var(--bg-secondary);
  border: 2px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}

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

.skill-option.selected {
  border-color: var(--accent);
  background: rgba(99, 102, 241, 0.1);
  box-shadow: 0 0 20px var(--accent-glow);
}

.skill-name {
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.skill-price {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent);
}

/* ===== INPUTS ===== */
.input, .textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text-primary);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.2s;
}

.input:focus, .textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.textarea {
  min-height: 100px;
  resize: vertical;
}

/* ===== BUTTONS ===== */
.btn {
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  margin-top: 1rem;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ===== WALLET ADDRESS ===== */
.wallet-address {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
  font-family: monospace;
  font-size: 0.85rem;
  color: var(--text-secondary);
  word-break: break-all;
  margin: 1rem 0;
}

/* ===== PAYMENT INFO ===== */
.payment-info {
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid var(--accent);
  border-radius: 12px;
  padding: 1rem;
  margin: 1rem 0;
}

.amount-display {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
}

/* ===== FILE UPLOAD ===== */
.file-upload {
  margin-top: 1rem;
  padding: 1.5rem;
  border: 2px dashed var(--border);
  border-radius: 12px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
}

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

.file-upload input {
  display: none;
}

.file-upload-hint {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ===== FEEDBACK ===== */
.feedback-section {
  margin-top: 2rem;
  padding: 1.5rem;
  background: var(--bg-secondary);
  border-radius: 12px;
  border: 1px solid var(--border);
}

.feedback-buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.feedback-btn {
  padding: 10px 20px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
}

.feedback-btn:hover {
  border-color: var(--accent);
}

.feedback-btn.success {
  border-color: var(--success);
  color: var(--success);
}

.feedback-btn.changes {
  border-color: var(--warning);
  color: var(--warning);
}

.feedback-btn.refund {
  border-color: #ef4444;
  color: #ef4444;
}

.feedback-form {
  margin-top: 1rem;
  display: none;
}

.feedback-form.active {
  display: block;
}

/* ===== RESULT BOX ===== */
.result-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  margin-top: 1rem;
  max-height: 400px;
  overflow-y: auto;
}

/* ===== FOOTER ===== */
.footer {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
  margin-top: 2rem;
}

.footer-slogan {
  font-style: italic;
  color: var(--text-secondary);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 600px) {
  .container {
    padding: 1rem;
  }
  
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .logo {
    font-size: 2rem;
  }
  
  .nav-links {
    flex-wrap: wrap;
    gap: 12px;
  }
}

/* ===== ANIMATIONS ===== */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.loading {
  animation: pulse 1.5s ease-in-out infinite;
}

/* ===== SUCCESS/ERROR STATES ===== */
.status-success {
  color: var(--success);
}

.status-error {
  color: #ef4444;
}

.status-warning {
  color: var(--warning);
}