/* --------------------------------------------------------------------------------------------------------
 * specifically sijmmetry
 */
.sine .card {
  position: relative;
  background: var(--bg-card);
  padding: 2rem 1rem;
  /* padding-top: 32px; */
  border: 1px solid var(--border);
  border-radius: 20px;
  transition: var(--transition);
  box-shadow: var(--shadow-card);
}
.sine .card:hover {
    border-color: var(--border-card);
    transform: translateY(-2px);
}
.sine .card h2 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.sine .cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 10px;
  text-align: left;
  padding-top: 5px;
}

.sine_calibration,
.sine_calibration_with_instruction {
    line-height: 1.6;
}


.sine_calibration .cards,
.sine_calibration_with_instruction .cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 10px;
  text-align: left;
  padding-top: 5px;
}

.sine_calibration_with_instruction .card {
    min-width: 350px;
}

.sine_checkout .item-line {
    display: flex; 
    justify-content: space-between; 
    border-bottom: 1px solid var(--border); 
    padding: 15px 0;
    gap: 10px;
}
.sine_checkout .total {
    font-size: 1.5rem; 
    font-weight: bold; 
    color: var(--accent-color); 
    margin-top: 20px; 
    text-align: right;
}

.user_form .weblet_content {
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2rem 1rem;
  background: var(--bg-main);
  transition: var(--transition);
  box-shadow: var(--shadow-card);
}  
.gridtable { width: 100%; }
.gridtable tr {
  display: block;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  grid-gap: 0px;
  margin-bottom: 0px;
}
@media screen and (max-width:480px) { /* portrait smartphones */
    .gridtable tr {
      display: grid;
      grid-template-columns: repeat(1, minmax(0, 1fr));
      grid-gap: 0px;
      margin-bottom: 0px;
    }
    .nav-links {
      display: none;
    }
}
@media screen and (min-width:480px) and (max-width:720px) { /* landscape smartphones and tablets*/
    .gridtable tr {
      display: grid;
      grid-template-columns: repeat(1, minmax(0, 1fr));
      grid-gap: 0px;
      margin-bottom: 0px;
    }
    .nav-links {
      display: none;
    }
}
/* 
* 
*/

.sine_calibration {
}

.sine_calibration_with_instruction {
}


/* Slider color */
.studio-container {
    /* display: flex; */
    /* background: var(--studio-bg);*/
    /* padding: 40px; */
    /* border-radius: 16px;*/
    /* gap: 1rem; */
    max-width: 800px;
    /* margin: 20px auto; */
    /* border: 2px solid var(--studio-border); /* De border voor de functionaliteit */
    /* color: var(--studio-text); */
    transition: all 0.3s ease;
    flex: 1.5;
    /* padding: 40px; */
    /* background: var(--bg-studio);*/
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-top: 2rem;
    padding-bottom: 2rem;
}

/* --- DE UNIVERSELE SLIDER BASIS --- */
.sijmmetry-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 8px; /* Dikte van de track */
    background: var(--accent-color);
    border-radius: 5px;
    outline: none;
    border: none; /* Verwijdert browser-specifieke kaders */
    touch-action: none; /* Voorkomt dat de pagina scrollt terwijl je de slider bedient */
}
/* --- CHROME / SAFARI / EDGE --- */
.sijmmetry-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    height: 24px;
    width: 24px;
    border-radius: 50%;
    background: var(--bg-main);
    border: 2px solid var(--accent-color);
    cursor: pointer;
    /* CENTRERING: (Track 8px / 2) - (Thumb 24px / 2) = -8px */
    margin-top: -1px; 
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

/* --- MOZILLA FIREFOX --- */
.sijmmetry-slider::-moz-range-thumb {
    height: 24px; /* Exact gelijk aan Chrome */
    width: 24px;
    border-radius: 50%;
    background: var(--bg-main);
    /* FIX: Expliciete border en box-sizing voor Mozilla */
    border: 2px solid var(--accent-color); 
    box-sizing: border-box; 
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

/* Verwijdert de stippellijn in Firefox bij klikken */
.sijmmetry-slider::-moz-focus-outer {
    border: 0;
}

.studio-header {
    text-align: center;
    margin-bottom: 40px;
}

#freqDisplay { 
    font-size: 5rem; 
    font-weight: bold; 
    margin-bottom: 10px; 
    color: var(--accent-color);
}

#freqDisplay span { 
    font-size: 3rem; 
    color: var(--accent-color); 
    margin-left: 5px; 
}

.studio-controls {
    display: flex;
    flex-direction: row; /* Naast elkaar */
    align-items: center;
    justify-content: space-around;
    gap: 1rem;
    width: 100%;}

/* --- VOLUME SPECIFIEK (VERTICAAL) --- */
.fader-wrapper {
    height: 200px;
    width: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.vertical-fader {
    width: 160px !important; 
    transform: rotate(-90deg);
    background: var(--accent-color);
}

/* --- FREQUENTIE SPECIFIEK (HORIZONTAAL) --- */
#freqSlider {
    /* min-width: 300px;*/
    width: 100%; 
    margin: 3em 0;
}

.loudness-col {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-right: 2rem;
    border-right: 1px solid var(--border-color); /* Verticale scheidingslijn op desktop */
}

#volDisplay {
    font-size: 1.4em;
    font-weight: 600;
    color: var(--accent-color);
}

/* Horizontale Frequency Slider */
.frequency-col {
    flex: 1;
    /* width: 100%; */
    max-width: 400px;
}

/* Frequentie Specifiek (Horizontaal) */
.frequency-panel { 
    flex: 1;
    max-width: 500px;
    text-align: center; 
}

.action-buttons {
    margin-top: 40px;
    display: contents;
    gap: 15px;
}

.btn-lock {
    display: inline-block;
    padding: 16px 30px;
    background-color: var(--bg-button-lock);
    border: 1px solid var(--border-button-lock);
    color: var(--text-button-lock);
    border-radius: 12px;
    text-decoration: none;
    font-size: inherit;
    font-weight: 600;
    letter-spacing: inherit;
    margin: 0.5em;
    cursor: pointer;
    line-height: inherit;
    transition: all 0.3s ease;
}
.btn-lock.is-locked {
    border: 0px;
    background-color: var(--bg-button-locked);
    color: var(--text-button-locked);
}

/* MOBIEL (Schermen kleiner dan 768px): Sliders stapelen */
@media (max-width: 900px) {
    .sine_calibration_with_instruction .studio-controls {
        flex-direction: column; /* Volume BOVEN frequentie */
        gap: 30px;
    }

    .sine_calibration_with_instruction .loudness-col {
        padding-right: 0;
        padding-bottom: 30px;
        border-right: none; /* Verwijder verticale lijn */
        border-bottom: 1px solid var(--border-color); /* Horizontale lijn tussen de twee */
        width: 100%;
    }

    .sine_calibration_with_instruction .frequency-panel {
        width: 100%;
    }

    /* Maak de knoppen groter voor duimen op mobiel */
    .sine_calibration_with_instruction .action-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .sine_calibration_with_instruction .btn-primary, .btn-lock {
        /* width: 100%; */
        margin-bottom: 10px;
    }
}

@media (max-width: 500px) {
    .sine_calibration .studio-controls {
        flex-direction: column; /* Volume BOVEN frequentie */
        gap: 30px;
    }

    .sine_calibration .loudness-col {
        padding-right: 0;
        padding-bottom: 30px;
        border-right: none; /* Verwijder verticale lijn */
        border-bottom: 1px solid var(--border-color); /* Horizontale lijn tussen de twee */
        width: 100%;
    }

    .sine_calibration .frequency-panel {
        width: 100%;
    }

    /* Maak de knoppen groter voor duimen op mobiel */
    .sine_calibration .action-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .sine_calibration .btn-primary, .btn-lock {
        /* width: 100%; */
        margin-bottom: 10px;
    }
}