/* ============================================
   NEXAVEC Repurposer — Base Styles
   ============================================ */

@import url('./variables.css');

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-regular);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  line-height: 1.6;
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  color: var(--color-text-primary);
}

h1 { font-size: var(--font-size-h1); font-weight: var(--font-weight-bold); }
h2 { font-size: var(--font-size-h2); font-weight: var(--font-weight-semibold); }
h3 { font-size: var(--font-size-h3); font-weight: var(--font-weight-semibold); }

a {
  color: var(--color-accent-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

img {
  max-width: 100%;
  height: auto;
}

/* ---- Layout Utilities ---- */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container--narrow {
  max-width: var(--max-width-narrow);
}

.section {
  padding: var(--space-4xl) 0;
}

.section--sm {
  padding: var(--space-2xl) 0;
}

/* ---- Buttons ---- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 28px;
  font-family: var(--font-family);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  line-height: 1.4;
}

.btn--primary {
  background: var(--color-accent-primary);
  color: #fff;
  box-shadow: var(--shadow-glow);
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 0 30px rgba(59, 130, 246, 0.25);
}

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

.btn--secondary:hover {
  background: var(--color-bg-surface);
  border-color: var(--color-accent-primary);
}

.btn--ghost {
  background: transparent;
  color: var(--color-accent-primary);
  padding: 8px 16px;
}

.btn--ghost:hover {
  background: rgba(59, 130, 246, 0.1);
}

.btn--lg {
  padding: 16px 36px;
  font-size: 18px;
}

.btn--sm {
  padding: 8px 18px;
  font-size: var(--font-size-small);
}

.btn--full {
  width: 100%;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* ---- Form Elements ---- */

.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 12px 16px;
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-family: var(--font-family);
  font-size: var(--font-size-body);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-accent-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.form-input.error,
.form-textarea.error,
.form-select.error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.form-input.valid,
.form-textarea.valid,
.form-select.valid {
  border-color: var(--color-success);
}

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

.form-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
}

.form-error {
  font-size: var(--font-size-xs);
  color: var(--color-error);
  margin-top: var(--space-xs);
  display: none;
}

.form-error.visible {
  display: block;
}

/* ---- Card ---- */

.card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--transition-base);
}

.card:hover {
  border-color: var(--color-accent-primary);
  box-shadow: var(--shadow-glow);
}

.card--surface {
  background: var(--color-bg-surface);
}

/* ---- Badge ---- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-full);
  background: rgba(59, 130, 246, 0.1);
  color: var(--color-accent-primary);
  border: 1px solid rgba(59, 130, 246, 0.2);
}

.badge--ai {
  background: rgba(139, 92, 246, 0.1);
  color: var(--color-ai-highlight);
  border-color: rgba(139, 92, 246, 0.2);
}

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

/* ---- Text Utilities ---- */

.text-secondary { color: var(--color-text-secondary); }
.text-accent { color: var(--color-accent-primary); }
.text-ai { color: var(--color-ai-highlight); }
.text-success { color: var(--color-success); }
.text-center { text-align: center; }
.text-small { font-size: var(--font-size-small); }

/* ---- Flex Utilities ---- */

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }

/* ---- Visibility ---- */

.hidden { display: none !important; }

/* ---- Divider ---- */

.divider {
  height: 1px;
  background: var(--color-border);
  border: none;
  margin: var(--space-2xl) 0;
}

/* ---- Navigation (shared) ---- */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  padding: 0 var(--space-lg);
}
.nav__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav__logo {
  font-size: 20px;
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.nav__logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--color-accent-primary), var(--color-ai-highlight));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}
.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  list-style: none;
}
.nav__links a {
  color: var(--color-text-secondary);
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast);
}
.nav__links a:hover {
  color: var(--color-text-primary);
}

/* ---- Footer (shared) ---- */

.footer {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--color-border);
  text-align: center;
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
}

/* ---- Responsive ---- */

@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-md);
  }
  .section {
    padding: var(--space-2xl) 0;
  }
  .hide-mobile { display: none !important; }
}

@media (max-width: 480px) {
  .btn--lg {
    padding: 14px 28px;
    font-size: 16px;
  }
}