/* =======================================
   CIRKEL CALCULATOR - MODERNE STIJL
   ======================================= */

/* Gebruik je algemene card styling */
.fraction-calculator-card {
    /* ... (Kopieer de basisstijl van .barcode-generator-card of .password-card-content) ... */
    max-width: 100%;
    margin: 0 auto;
    padding: 35px;
    background: linear-gradient(145deg, var(--card-bg) 0%, var(--secondary-bg) 100%);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    box-shadow: 
      0 20px 60px rgba(0, 0, 0, 0.5),
      0 0 0 1px rgba(255, 255, 255, 0.05) inset;
    color: var(--text-color);
    position: relative;
    overflow: hidden;
    box-sizing: border-box;
}

.fraction-calculator-card::before {
    /* ... (Kopieer de ::before styling en animatie van je wachtwoord generator) ... */
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-purple), var(--accent-blue), var(--accent-purple));
    background-size: 200% 100%;
    animation: fractionGradientShift 3s ease infinite; /* Unieke animatienaam */
}

@keyframes fractionGradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.fraction-calculator-card h1 {
    /* ... (Kopieer h1 styling) ... */
    color: var(--text-primary);
    font-size: 2rem;
    margin-bottom: 8px;
    text-align: center;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.fraction-intro {
    /* ... (Kopieer intro styling) ... */
    text-align: center;
    color: #8b92a8;
    font-size: 0.95rem;
    margin-bottom: 30px;
    line-height: 1.6;
    font-weight: 400;
}

.fraction-main-layout {
    display: flex;
    gap: 30px;
}

.fraction-input-column {
    flex: 1;
    min-width: 300px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.fraction-output-column {
    flex: 2;
    min-width: 400px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    position: sticky;
    top: 20px;
}

.fraction-input-section,
.fraction-operation-section,
.fraction-result-section,
.fraction-visualization-section {
    background: rgba(255, 255, 255, 0.05);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid rgba(45, 55, 72, 0.5);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.fraction-input-section:hover,
.fraction-operation-section:hover,
.fraction-result-section:hover,
.fraction-visualization-section:hover {
  border-color: rgba(147, 51, 234, 0.5);
  box-shadow: 0 0 20px rgba(147, 51, 234, 0.1);
}

.fraction-input-section label,
.fraction-operation-section label,
.fraction-result-section label,
.fraction-visualization-section label {
    font-weight: 600;
    color: #ffffff;
    font-size: 0.95rem;
    letter-spacing: 0.3px;
    margin-bottom: 8px;
    display: block;
}

.fraction-input-group {
    display: flex;
    align-items: center;
    gap: 5px;
}

.fraction-input-group input[type="number"] {
    width: 60px; /* Kleinere breedte voor breuk invoer */
    padding: 10px 8px;
    background: rgba(0, 0, 0, 0.2);
    color: #e8e8e8;
    border: 2px solid rgba(45, 55, 72, 0.5);
    border-radius: 8px;
    font-size: 0.95rem;
    text-align: center;
    font-family: inherit;
    transition: all 0.3s ease;
    box-sizing: border-box;
}

.fraction-input-group input[type="number"]:focus,
.fraction-operation-section select:focus {
    outline: none;
    border-color: #9333ea;
    box-shadow: 0 0 0 3px rgba(147, 51, 234, 0.2);
}

.fraction-divider {
    color: #ffffff;
    font-size: 1.2rem;
    font-weight: 700;
}

.fraction-operation-section select {
    width: 100%; /* Of een vaste breedte */
    padding: 10px 12px;
    background: rgba(0, 0, 0, 0.2);
    color: #e8e8e8;
    border: 2px solid rgba(45, 55, 72, 0.5);
    border-radius: 8px;
    font-size: 0.95rem;
    font-family: inherit;
    transition: all 0.3s ease;
    box-sizing: border-box;
    -webkit-appearance: none; /* Verberg standaard dropdown pijl */
    -moz-appearance: none;
    appearance: none;
    background-image: url('data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23e8e8e8%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13.2-6.4H18.8c-7.7%200-13.5%205.1-13.8%2012.8a17.6%2017.6%200%200%200%206%2013.8L139%20227.6c7.7%207.7%2020.2%207.7%2028%200l118-118c7.7-7.7%207.7-20.2%200-28z%22%2F%3E%3C%2Fsvg%3E');
    background-repeat: no-repeat;
    background-position: right 10px center;
    background-size: 10px;
}


/* Resultaat weergave */
.fraction-result-display {
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: "Roboto Mono", monospace;
    font-size: 2.2rem; /* Groter voor resultaat */
    font-weight: 700;
    color: #3b82f6; /* Accentkleur voor resultaat */
    padding: 10px 0;
}

.fraction-result-display .divider {
    margin: 0 5px;
}

.fraction-decimal {
    text-align: center;
    font-size: 0.95rem;
    color: #8b92a8;
    margin-top: 10px;
}

/* Visualisatie container */
.visualization-container {
    min-height: 250px;
    background: radial-gradient(circle at top left, rgba(147, 51, 234, 0.05) 0%, rgba(0, 0, 0, 0.3) 100%);
    border: 2px solid rgba(45, 55, 72, 0.5);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden; /* Belangrijk voor SVG */
    position: relative;
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
}

.visualization-container .placeholder {
    color: #6b7280;
    text-align: center;
    font-size: 1rem;
    font-weight: 500;
    padding: 20px;
}

.fraction-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 20px;
}

/* Gebruik bestaande button stijlen */
.generate-btn { /* Hoofdkleur paars */
    background: linear-gradient(135deg, #9333ea 0%, #7c3aed 100%);
    color: white;
    padding: 14px 20px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.95rem;
    /* ... (Rest van de generate-btn styling) ... */
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(147, 51, 234, 0.4);
}

.generate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(147, 51, 234, 0.6);
}

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

.button.secondary { /* Secundaire kleur groen */
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    padding: 14px 20px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.95rem;
    /* ... (Rest van de secondary button styling) ... */
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
}

.button.secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.6);
}

.button.secondary:active {
    transform: translateY(0);
}


/* SVG Styling voor visualisatie */
.fraction-svg-container {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-around;
    flex-wrap: wrap; /* Zodat ze naast elkaar staan en wrappen indien nodig */
    gap: 20px;
}

.fraction-shape-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    min-width: 150px; /* Zorg dat ze niet te klein worden */
    max-width: 45%; /* Max breedte van 2 vormen naast elkaar */
}

.fraction-shape-group svg {
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px; /* Optioneel */
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

/* Voor cirkels */
.fraction-circle-segment {
    fill: #3b82f6; /* Blauwe kleur voor gevulde delen */
    stroke: rgba(0, 0, 0, 0.5);
    stroke-width: 1px;
    transition: fill 0.3s ease;
}

.fraction-circle-segment.unfilled {
    fill: #1a1a2e; /* Donkere achtergrond voor ongevulde delen */
    stroke: rgba(0, 0, 0, 0.5);
}

/* Voor vierkanten */
.fraction-square-grid {
    display: grid;
    /* grid-template-columns wordt via JS gezet */
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    width: 150px; /* Vaste breedte voor voorbeeld */
    height: 150px; /* Vaste hoogte voor voorbeeld */
}

.grid-cell {
    width: 100%;
    height: 100%;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background-color: #1a1a2e; /* Standaard ongevuld */
    transition: background-color 0.3s ease;
}

.grid-cell.filled {
    background-color: #3b82f6; /* Gevulde kleur */
}


/* Responsive Design - Afgestemd op je algemene aanpak */
@media (max-width: 1024px) {
  .fraction-main-layout {
    flex-direction: column;
    gap: 20px;
  }
  .fraction-input-column,
  .fraction-output-column {
    flex: none;
    min-width: unset;
  }
}

@media (max-width: 768px) {
  .fraction-calculator-card {
    padding: 20px 12px;
    border-radius: 16px;
    margin: 0 auto !important;
    width: 100% !important;
    max-width: 100% !important;
    overflow: hidden !important;
  }

  .fraction-calculator-card * {
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  .fraction-calculator-card h1 {
    font-size: 1.5rem;
    margin-bottom: 8px;
  }

  .fraction-intro {
    font-size: 0.88rem;
    margin-bottom: 20px;
  }

  .fraction-input-section,
  .fraction-operation-section,
  .fraction-result-section,
  .fraction-visualization-section {
    padding: 16px;
    gap: 15px;
  }

  .fraction-input-group input[type="number"] {
    width: 50px;
    padding: 8px 6px;
    font-size: 0.9rem;
  }

  .fraction-divider {
    font-size: 1.1rem;
  }

  .fraction-operation-section select {
    padding: 8px 10px;
    font-size: 0.9rem;
  }

  .fraction-result-display {
    font-size: 1.8rem;
  }

  .fraction-decimal {
    font-size: 0.88rem;
  }

  .visualization-container {
    min-height: 200px;
  }

  .fraction-svg-container {
    flex-direction: column; /* Stapel visualisaties op mobiel */
    gap: 15px;
  }

  .fraction-shape-group {
    max-width: 90%; /* Geef ze meer ruimte op mobiel als gestapeld */
  }

  .generate-btn,
  .button.secondary {
    padding: 12px 16px;
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .fraction-calculator-card {
    padding: 16px 10px;
  }

  .fraction-calculator-card h1 {
    font-size: 1.3rem;
  }

  .fraction-intro {
    font-size: 0.85rem;
  }

  .fraction-input-section,
  .fraction-operation-section,
  .fraction-result-section,
  .fraction-visualization-section {
    padding: 14px;
  }

  .fraction-input-group input[type="number"] {
    width: 45px;
    font-size: 0.85rem;
  }

  .fraction-result-display {
    font-size: 1.5rem;
  }

  .generate-btn,
  .button.secondary {
    padding: 11px 14px;
    font-size: 0.88rem;
  }
}