:root{
  --bg:#f8f9fa; 
  --card:#ffffff; 
  --accent:#5b21b6; /* Deep Purple */
  --accent-light: #7c3aed;
  --text:#1e293b;
  --muted:#64748b;
  --radius:16px;
  --max-width:1000px;
}

*{box-sizing:border-box}

body{
  margin:0;
  font-family: "Inter", sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height: 1.6;
}

.wrap{max-width:var(--max-width);margin:40px auto;padding:0 24px} 

/* Typography */
h1 { font-weight: 900; letter-spacing: -0.02em; margin-bottom: 8px; }
h2 { font-weight: 700; letter-spacing: -0.01em; }
.lead{font-size:16px;color:var(--muted); margin-bottom: 24px;}
.muted{color:var(--muted); font-size: 14px;}

/* Cards */
.card{
  background:var(--card);
  border-radius:var(--radius);
  padding: 40px; /* Generous breathing space */
  box-shadow:0 4px 20px rgba(0,0,0,0.05); 
  margin-bottom:24px; 
  border: 1px solid #e2e8f0;
}

/* Inputs */
.form-row { display: flex; gap: 24px; margin-bottom: 32px; }
.form-group { flex: 1; }

label { display: block; font-weight: 600; margin-bottom: 8px; font-size: 14px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); }
input[type="text"], select {
  width: 100%; padding: 12px; border-radius: 8px; border: 1px solid #cbd5e1; font-size: 16px;
  font-family: inherit;
}

/* --- THE GRID SYSTEM --- */
.sliders-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); /* Responsive Columns */
  gap: 40px; /* Plenty of breathing space between cards */
  margin-bottom: 40px;
}

/* Slider Cards */
.slider-card {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 32px; /* Internal breathing space */
  display: flex;
  flex-direction: column;
  justify-content: center;
  transition: transform 0.2s ease;
}
.slider-card:hover { border-color: var(--accent-light); }

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.week-tag {
    font-size: 10px;
    background: #ede9fe;
    color: var(--accent);
    padding: 4px 8px;
    border-radius: 20px;
    font-weight: 700;
    text-transform: uppercase;
}

.slider-desc {
  font-size: 14px;
  color: var(--text);
  margin: 0 0 24px 0;
  line-height: 1.5;
  opacity: 0.8;
}

/* Range Sliders */
.range-wrap { margin-top: auto; }
input[type=range] {
  width: 100%;
  accent-color: var(--accent);
  cursor: pointer;
  margin-bottom: 12px;
}
.labels {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--muted);
  font-weight: 600;
}

/* Radio Buttons for Time */
.radio-group { display: flex; gap: 12px; margin-top: auto;}
.time-option { flex: 1; }
.time-option input { display: none; }
.time-option label {
  display: block; text-align: center; padding: 12px;
  background: #fff; border: 1px solid #cbd5e1; border-radius: 8px;
  cursor: pointer; font-weight: 500; color: var(--text);
  transition: all 0.2s; text-transform: none; font-size: 14px;
}
.time-option input:checked + label {
  background: var(--accent); color: white; border-color: var(--accent);
  box-shadow: 0 4px 12px rgba(91, 33, 182, 0.3);
}

/* Buttons */
.action-area { text-align: center; margin-top: 12px; }
.btn {
  padding: 16px 32px; border: none; border-radius: 50px;
  font-size: 16px; font-weight: 700; cursor: pointer;
  transition: transform 0.1s ease;
}
.btn-primary { background: var(--accent); color: white; box-shadow: 0 4px 15px rgba(91, 33, 182, 0.4); }
.btn-primary:hover { background: var(--accent-light); transform: translateY(-2px); }
.btn-secondary { background: white; border: 2px solid var(--accent); color: var(--accent); }

/* Result Area */
.advice-box {
  background: #f3e8ff;
  border-left: 4px solid var(--accent);
  padding: 24px;
  margin: 24px 0;
  border-radius: 4px;
  color: #4c1d95;
  font-weight: 500;
  line-height: 1.6;
}

.week-block {
    background: #fff;
    border: 1px solid #e2e8f0;
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 16px;
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .sliders-grid { grid-template-columns: 1fr; }
  .form-row { flex-direction: column; gap: 16px; margin-bottom: 24px;}
  .wrap { padding: 0 16px; margin: 20px auto; }
  .card { padding: 24px; }
}