* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    background: white;
    border-radius: 20px;
    padding: 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.logo {
    text-align: center;
    font-size: 24px;
    font-weight: 700;
    color: #667eea;
    margin-bottom: 30px;
}

/* Progress bar */
.progress-bar {
    height: 4px;
    background: #e2e8f0;
    border-radius: 2px;
    margin-bottom: 15px;
    overflow: hidden;
}

.progress {
    height: 100%;
    background: linear-gradient(90deg, #667eea, #764ba2);
    width: 0%;
    transition: width 0.5s ease;
}

/* Step indicators */
.steps-indicator {
    display: flex;
    justify-content: space-between;
    margin-bottom: 30px;
}

.step-dot {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: #e2e8f0;
    color: #94a3b8;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.step-dot.active {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    transform: scale(1.1);
}

.step-dot.completed {
    background: #10b981;
    color: white;
}

/* Form container */
.form-container {
    position: relative;
    min-height: 250px;
}

.step {
    position: absolute;
    width: 100%;
    opacity: 0;
    transform: translateX(30px);
    pointer-events: none;
    transition: all 0.4s ease;
}

.step.active {
    position: relative;
    opacity: 1;
    transform: translateX(0);
    pointer-events: auto;
}

.greeting {
    text-align: center;
    color: #64748b;
    font-size: 14px;
    margin-bottom: 5px;
}

.greeting .user-name-display {
    color: #667eea;
    font-weight: 600;
}

.step h2 {
    font-size: 24px;
    color: #1e293b;
    margin-bottom: 10px;
    text-align: center;
}

.step .subtitle {
    color: #64748b;
    text-align: center;
    margin-bottom: 25px;
    font-size: 14px;
}

/* Input styles */
.input-group {
    margin-bottom: 20px;
}

.input-group input {
    width: 100%;
    padding: 16px 20px;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-size: 16px;
    transition: all 0.3s ease;
    outline: none;
}

.input-group input:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.input-group input::placeholder {
    color: #94a3b8;
}

/* Buttons */
.btn {
    display: block;
    width: 100%;
    padding: 16px 24px;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn.primary {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
}

.btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -10px rgba(102, 126, 234, 0.5);
}

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

.btn.primary:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.4);
}

.btn.choice:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}

.btn.link:focus {
    outline: none;
    text-decoration: underline;
}

/* Choice buttons */
.button-group {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
}

.btn.choice {
    flex: 1;
    background: #f8fafc;
    border: 2px solid #e2e8f0;
    color: #475569;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 24px 16px;
}

.btn.choice:hover {
    border-color: #667eea;
    background: #f0f4ff;
}

.btn.choice .icon {
    font-size: 32px;
    margin-bottom: 10px;
}

/* Link buttons */
.btn.link {
    background: none;
    color: #667eea;
    font-size: 14px;
    padding: 10px;
    width: auto;
    display: inline-block;
}

.btn.link:hover {
    text-decoration: underline;
}

.resend-options {
    text-align: center;
    margin-top: 20px;
}

/* Success state */
.success-icon {
    width: 80px;
    height: 80px;
    background: #10b981;
    border-radius: 50%;
    color: white;
    font-size: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    animation: scaleIn 0.5s ease;
}

@keyframes scaleIn {
    0% {
        transform: scale(0);
        opacity: 0;
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Error message */
.error-message {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: #ef4444;
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 500;
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 100;
}

.error-message.visible {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* Mobile adjustments */
@media (max-width: 480px) {
    .container {
        padding: 30px 20px;
    }

    .step h2 {
        font-size: 20px;
    }

    .button-group {
        flex-direction: column;
    }
}

/* Back button */
.btn.back {
    position: absolute;
    top: -50px;
    left: 0;
    width: 36px;
    height: 36px;
    padding: 0;
    background: #f1f5f9;
    border: none;
    border-radius: 50%;
    color: #64748b;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn.back:hover,
.btn.back:focus {
    background: #e2e8f0;
    color: #475569;
    outline: none;
}

.btn.back:focus {
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.3);
}

/* Form container needs relative positioning for back button */
.form-container {
    position: relative;
    padding-top: 10px;
}

/* Data link */
.data-link {
    display: block;
    text-align: center;
    margin-top: 30px;
    color: #94a3b8;
    font-size: 12px;
    text-decoration: none;
}

.data-link:hover {
    color: #667eea;
}