:root {
    --primary: #5865F2;
    --primary-hover: #4752C4;
    --bg: #23272a;
    --card: #2c2f33;
    --text: #ffffff;
    --text-muted: #b9bbbe;
    --input-bg: #1e1f22;
    --danger: #ed4245;
    --success: #3ba55c;
}

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: 'Whitney', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 20px;
}

.form-container {
    background: var(--card);
    padding: 30px;
    border-radius: 8px;
    width: 100%;
    max-width: 650px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.5);
}

header h1 {
    margin-top: 0;
    text-align: center;
    font-size: 24px;
}

.progress-bar {
    background: #4e5058;
    height: 8px;
    border-radius: 10px;
    margin: 20px 0 30px;
    overflow: hidden;
}

#progress {
    background: var(--primary);
    height: 100%;
    width: 16.66%; 
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.step { display: none; }
.step.active { display: block; animation: fadeIn 0.3s ease-in-out; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.warning-box {
    background: rgba(237, 66, 69, 0.1);
    border: 1px solid var(--danger);
    color: var(--danger);
    padding: 15px;
    border-radius: 5px;
    font-weight: bold;
    text-align: center;
    margin-bottom: 20px;
}

.prerequisites {
    background: rgba(0, 0, 0, 0.2);
    padding: 15px;
    border-radius: 8px;
    margin: 20px 0;
}

.prerequisites ul {
    list-style: none;
    padding: 0;
}

.prerequisites li {
    margin: 8px 0;
    padding-left: 25px;
    position: relative;
    color: var(--text-muted);
}

.prerequisites li::before {
    content: "🔸";
    position: absolute;
    left: 0;
}

label {
    display: block;
    margin: 20px 0 8px;
    font-weight: 600;
    font-size: 14px;
    text-transform: uppercase;
    color: var(--text-muted);
}

input, textarea, select {
    width: 100%;
    padding: 12px;
    background: var(--input-bg);
    border: 1px solid transparent;
    color: white;
    border-radius: 4px;
    font-size: 16px;
    transition: border 0.2s;
}

input:focus, textarea:focus {
    border-color: var(--primary);
    outline: none;
}

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

.binary-choice {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255,255,255,0.05);
    padding: 10px;
    margin-bottom: 8px;
    border-radius: 4px;
}

.binary-choice label { margin: 0; text-transform: none; }
.binary-choice select { width: auto; min-width: 80px; padding: 5px; }

.nav-buttons {
    margin-top: 40px;
    display: flex;
    justify-content: space-between;
    gap: 15px;
}

button {
    flex: 1;
    padding: 14px;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.2s, opacity 0.2s;
}

#prevBtn { background: #4e5058; color: white; }
#prevBtn:hover { background: #6d6f78; }

#nextBtn, #submitBtn { background: var(--primary); color: white; }
#nextBtn:hover, #submitBtn:hover { background: var(--primary-hover); }

button:disabled { opacity: 0.3; cursor: not-allowed; }