/* RispondiTu.it - Style principale (Twitter/X inspired) */

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

:root {
  --primary-color: #667eea;
  --secondary-color: #764ba2;
  --text-primary: #0f1419;
  --text-secondary: #536471;
  --border-color: #eff3f4;
  --hover-bg: #f7f9f9;
  --success-color: #00ba7c;
  --error-color: #f4212e;
  --card-bg: #ffffff;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: #ffffff;
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.header {
  background: #ffffff;
  border-bottom: 1px solid var(--border-color);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.95);
}

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

.logo {
  font-size: 24px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

nav {
  display: flex;
  gap: 24px;
}

.nav-link {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 20px;
  transition: all 0.2s;
}

.nav-link:hover {
  background: var(--hover-bg);
}

.nav-link.active {
  background: var(--primary-color);
  color: white;
}

/* Main content */
main {
  flex: 1;
  padding: 40px 0;
}

/* Card stile Twitter */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 20px;
  transition: all 0.3s ease;
}

.card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

/* Bottoni */
.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 24px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-block;
  text-decoration: none;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

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

.btn-secondary {
  background: white;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 12px 24px;
  border-radius: 24px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-secondary:hover {
  background: var(--hover-bg);
}

/* Form */
input[type="text"],
input[type="email"],
input[type="password"],
textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
  transition: all 0.2s;
  margin-bottom: 16px;
}

input:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

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

/* Flash messages */
.flash {
  padding: 16px;
  border-radius: 12px;
  margin-bottom: 20px;
  font-weight: 500;
}

.flash.success {
  background: #d1f4e0;
  color: #00653c;
  border: 1px solid #00ba7c;
}

.flash.error {
  background: #fce8e8;
  color: #a61e1e;
  border: 1px solid #f4212e;
}

/* Link */
.view-link {
  display: inline-block;
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  margin-top: 16px;
  transition: all 0.2s;
}

.view-link:hover {
  color: var(--secondary-color);
  transform: translateX(4px);
}

/* Footer */
.footer {
  background: #f7f9f9;
  border-top: 1px solid var(--border-color);
  padding: 32px 0;
  text-align: center;
  color: var(--text-secondary);
  margin-top: auto;
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }
  
  .header .container {
    flex-direction: column;
    gap: 16px;
  }
  
  nav {
    width: 100%;
    justify-content: center;
  }
  
  .card {
    padding: 16px;
  }
}

/* Animazioni */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.5s ease-out;
}