/* ========================================
   IDEOLY DESIGN SYSTEM
   Minimal, professional, accessible
   ======================================== */

/* ----------------------------------------
   CUSTOM PROPERTIES (CSS Variables)
   ---------------------------------------- */
:root {
  /* Colors - Professional palette */
  --color-primary: #3a6b76;
  --color-primary-dark: #4338ca;
  --color-accent: #f59e0b;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-muted: #6b7280;

  /* Neutrals */
  --color-bg: #ffffff;
  --color-bg-menu: #fffbf1;
  --color-bg-subtle: #f9fafb;
  --color-bg-muted: #f3f4f6;
  --color-text: #111827;
  --color-text-muted: #6b7280;
  --color-border: #e5e7eb;

  /* Spacing scale (consistent rhythm) */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --text-xs: 0.75rem;     /* 12px */
  --text-sm: 0.875rem;    /* 14px */
  --text-base: 1rem;      /* 16px */
  --text-lg: 1.125rem;    /* 18px */
  --text-xl: 1.25rem;     /* 20px */
  --text-2xl: 1.5rem;     /* 24px */
  --text-3xl: 1.875rem;   /* 30px */
  --text-4xl: 2.25rem;    /* 36px */

  --line-tight: 1.25;
  --line-normal: 1.5;
  --line-relaxed: 1.75;

  /* Border radius */
  --radius-sm: 0.375rem;  /* 6px */
  --radius: 0.5rem;       /* 8px */
  --radius-lg: 0.75rem;   /* 12px */
  --radius-xl: 1rem;      /* 16px */

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ----------------------------------------
   RESET & BASE STYLES
   ---------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--line-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
}

/* ----------------------------------------
   TYPOGRAPHY
   ---------------------------------------- */
.h1, .h2, .h3, .h4 {
  font-weight: 700;
  line-height: var(--line-tight);
  color: var(--color-text);
}

.h1 { font-size: var(--text-4xl); margin-block-end: var(--space-4); }
.h2 { font-size: var(--text-3xl); margin-block-end: var(--space-3); }
.h3 { font-size: var(--text-2xl); margin-block-end: var(--space-3); }
.h4 { font-size: var(--text-xl); margin-block-end: var(--space-2); }

.lead {
  font-size: var(--text-lg);
  line-height: var(--line-relaxed);
  color: var(--color-text);
}

.small {
  font-size: var(--text-sm);
}

.muted {
  color: var(--color-text-muted);
}

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

a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

/* ----------------------------------------
   LAYOUT PRIMITIVES
   ---------------------------------------- */
.container {
  width: 100%;
  max-width: 75rem; /* 1200px */
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.container--sm { max-width: 42rem; }   /* 672px */
.container--md { max-width: 56rem; }   /* 896px */
.container--lg { max-width: 90rem; }   /* 1440px */

/* Stack: vertical rhythm */
.stack > * + * {
  margin-block-start: var(--space-4);
}

/* Cluster: horizontal grouping */
.cluster {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}

/* Grid: responsive columns */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 20rem), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr)); }

/* ----------------------------------------
   CARD COMPONENT - REDUCED PADDING
   ---------------------------------------- */
.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card--interactive {
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-base);
}

.card--interactive:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.card.pad-0 {
  padding: 0;
}

/* Accent cards with solid blended colors instead of gradients */
.card.accent-bloom {
  background: #fef3f2;
  border-color: #fecaca;
}

.card.accent-sky {
  background: #f0f9ff;
  border-color: #bae6fd;
}

.card.accent-mint {
  background: #f0fdf4;
  border-color: #bbf7d0;
}

/* ----------------------------------------
   BUTTONS
   ---------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-base);
  font-weight: 500;
  line-height: 1;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn--primary {
  background-color: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.btn--primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: white;
  text-decoration: none;
}

.btn--secondary {
  background-color: var(--color-bg-muted);
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn--secondary:hover {
  background-color: var(--color-bg-subtle);
  color: var(--color-text);
  text-decoration: none;
}

.btn--accent {
  background-color: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}

.btn--accent:hover {
  background-color: #d97706;
  color: white;
  text-decoration: none;
}

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

.btn--ghost:hover {
  background-color: var(--color-bg-subtle);
  color: var(--color-text);
  text-decoration: none;
}

.btn--soft {
  background-color: var(--color-bg-subtle);
  color: var(--color-primary);
  border-color: transparent;
}

.btn--soft:hover {
  background-color: var(--color-bg-muted);
  color: var(--color-primary);
  text-decoration: none;
}

.btn--icon {
  padding: var(--space-2);
}

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

/* ----------------------------------------
   FORMS
   ---------------------------------------- */
.label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  margin-block-end: var(--space-2);
}

.input,
.textarea,
.select {
  width: 100%;
  padding: var(--space-3);
  font-size: var(--text-base);
  font-family: inherit;
  color: var(--color-text);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input:focus,
.textarea:focus,
.select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.input--invalid,
.textarea--invalid,
.select--invalid {
  border-color: var(--color-error);
}

.input--invalid:focus,
.textarea--invalid:focus,
.select--invalid:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.textarea {
  min-height: 8rem;
  resize: vertical;
}

.select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
  background-position: right var(--space-3) center;
  background-repeat: no-repeat;
  background-size: 1.5em 1.5em;
  padding-right: var(--space-10);
}

.help {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-block-start: var(--space-2);
}

.error {
  color: var(--color-error);
  font-size: var(--text-sm);
}

/* ----------------------------------------
   BADGES
   ---------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 500;
  border-radius: var(--radius-sm);
  background-color: var(--color-bg-muted);
  color: var(--color-text);
}

.badge--success {
  background-color: #d1fae5;
  color: #065f46;
}

.badge--warning {
  background-color: #fef3c7;
  color: #92400e;
}

.badge--error {
  background-color: #fee2e2;
  color: #991b1b;
}

/* ----------------------------------------
   NAVIGATION
   ---------------------------------------- */
.nav {
  background: var(--color-bg-menu);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(8px);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-4);
}

.nav__brand {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.nav__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.nav__link:hover,
.nav__link[aria-current="page"] {
  color: var(--color-primary);
  text-decoration: none;
}

/* ----------------------------------------
   UTILITIES
   ---------------------------------------- */
.border { border: 1px solid var(--color-border); }
.round { border-radius: var(--radius); }
.pad-4 { padding: var(--space-4); }

/* Toast/Notice */
.notice {
  padding: var(--space-4);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  background: var(--color-bg-subtle);
}

.toast {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  z-index: 9999;
}

.toast__item {
  padding: var(--space-4);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

/* Idea card (for voting UI) */
.idea {
  display: flex;
  gap: var(--space-4);
}

.idea__vote {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}

.vote-btn {
  appearance: none;
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-2);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: var(--text-lg);
}

.vote-btn:hover:not(:disabled) {
  background: var(--color-primary);
  color: white;
  transform: scale(1.1);
}

.vote-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.vote-count {
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.idea__body {
  flex: 1;
}

.idea__title {
  font-weight: 600;
  font-size: var(--text-lg);
  margin-block-end: var(--space-2);
}

.idea__meta {
  margin-block-end: var(--space-3);
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .nav__inner {
    flex-direction: column;
    gap: var(--space-4);
  }

  .nav__links {
    flex-wrap: wrap;
    justify-content: center;
  }

  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }
}
```

**Belangrijkste wijziging:**

In alle `.btn` hover states heb ik expliciet `color: white;` (of de juiste tekstkleur) toegevoegd en `text-decoration: none;` om te voorkomen dat de algemene `a:hover` regel de button styling overschrijft. Dit lost het probleem op waarbij de tekst onzichtbaar werd bij hover op submit buttons.

De specifieke wijzigingen zijn:
- `.btn--primary:hover` → toegevoegd `color: white;`
- `.btn--secondary:hover` → toegevoegd `color: var(--color-text);`
- `.btn--accent:hover` → toegevoegd `color: white;`
- `.btn--ghost:hover` → toegevoegd `color: var(--color-text);`
- `.btn--soft:hover` → toegevoegd `color: var(--color-primary);`

Alle button hover states hebben nu ook expliciet `text-decoration: none;` om te voorkomen dat de onderstreping verschijnt.