/* Styles communs pour toutes les pages - Design moderne */
:root {
  --bg: #0a0e1a;
  --bg-soft: #0f172a;
  --bg-card: #151b2e;
  --muted: #94a3b8;
  --text: #f1f5f9;
  --white: #ffffff;
  --bdr: #1e293b;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --accent-2: #8b5cf6;
  --success: #10b981;
  --error: #ef4444;
  --warning: #f59e0b;
  --shadow: 0 20px 50px -12px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 25px 60px -12px rgba(0, 0, 0, 0.6);
  --radius: 16px;
  --radius-lg: 24px;
  --container: 1280px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.2s ease;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 15px;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
  font-family: inherit;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  color: var(--white);
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.5);
}

.btn-ghost {
  border: 1px solid var(--bdr);
  color: var(--text);
  background: transparent;
}

.btn-ghost:hover:not(:disabled) {
  border-color: var(--accent);
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

.input, .textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg);
  border: 1px solid var(--bdr);
  border-radius: 10px;
  color: var(--text);
  font-size: 15px;
  font-family: inherit;
  transition: all 0.2s ease;
  outline: none;
}

.input:focus, .textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.input:invalid:not(:placeholder-shown), .textarea:invalid:not(:placeholder-shown) {
  border-color: var(--error);
}

.textarea {
  min-height: 120px;
  resize: vertical;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--bdr);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(59, 130, 246, 0.4);
  box-shadow: var(--shadow-lg);
}

.alert {
  padding: 14px 16px;
  border-radius: 10px;
  margin-bottom: 16px;
  font-size: 14px;
}

.alert-success {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #6ee7b7;
}

.alert-error {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #fca5a5;
}

.alert-info {
  background: rgba(59, 130, 246, 0.15);
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: #93c5fd;
}

.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(59, 130, 246, 0.3);
  border-radius: 50%;
  border-top-color: var(--accent);
  animation: spin 1s ease-in-out infinite;
}

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

.icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.icon-lg {
  width: 24px;
  height: 24px;
}

@media (max-width: 768px) {
  .section {
    padding: 60px 0;
  }
}