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

:root {
    --primary-color: #c41e3a;
    --primary-dark: #a01a2f;
    --secondary-color: #2c5530;
    --background: #f8f9fa;
    --text: #333;
    --text-light: #666;
    --border: #e0e0e0;
    --white: #ffffff;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-hover: rgba(0, 0, 0, 0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--text);
    line-height: 1.6;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
}

.page {
    display: none;
    min-height: 100vh;
    padding: 20px 0;
}

.page.active {
    display: block;
}

/* Home Page */
.home-content {
    background: var(--white);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 10px 40px var(--shadow);
    margin-top: 20px;
}

.home-content h1 {
    font-size: 28px;
    color: var(--primary-color);
    margin-bottom: 20px;
    line-height: 1.3;
}

.intro-text {
    font-size: 16px;
    color: var(--text-light);
    margin-bottom: 15px;
    text-align: left;
}

/* Buttons */
.btn {
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
    width: 100%;
    max-width: 300px;
    margin: 20px auto 0;
    display: block;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(196, 30, 58, 0.3);
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(196, 30, 58, 0.4);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

.btn-primary:disabled {
    background: #ccc;
    cursor: not-allowed;
    box-shadow: none;
}

.btn-secondary {
    background: var(--white);
    color: var(--text);
    border: 2px solid var(--border);
    box-shadow: none;
}

.btn-secondary:hover {
    background: var(--background);
    border-color: var(--text-light);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow);
}

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

/* Button Group */
.button-group {
    display: flex;
    gap: 12px;
    margin-top: 25px;
    flex-direction: column;
}

.button-group .btn {
    margin: 0;
    max-width: 100%;
}

@media (min-width: 768px) {
    .button-group {
        flex-direction: row;
        justify-content: center;
    }
    
    .button-group .btn {
        flex: 1;
        max-width: 200px;
    }
}

/* Form Container */
#form-container {
    background: var(--white);
    border-radius: 20px;
    padding: 30px 20px;
    box-shadow: 0 10px 40px var(--shadow);
    margin-top: 20px;
}

/* Progress Bar */
.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--border);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 4px;
    transition: width 0.3s ease;
    width: 20%;
}

.progress-text {
    text-align: center;
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 30px;
    font-weight: 500;
}

/* Form Steps */
.form-step {
    display: none;
    animation: fadeIn 0.3s ease;
}

.form-step.active {
    display: block;
}

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

.form-step h2 {
    font-size: 24px;
    color: var(--text);
    margin-bottom: 10px;
    text-align: center;
}

.step-description {
    font-size: 15px;
    color: var(--text-light);
    margin-bottom: 25px;
    text-align: center;
}

/* Options Grid */
.options-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    margin-bottom: 25px;
}

.option-btn {
    padding: 16px 20px;
    font-size: 16px;
    background: var(--white);
    border: 2px solid var(--border);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
    color: var(--text);
    font-weight: 500;
}

.option-btn:hover {
    border-color: var(--primary-color);
    background: rgba(196, 30, 58, 0.05);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow);
}

.option-btn.selected {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
    box-shadow: 0 4px 15px rgba(196, 30, 58, 0.3);
}

/* Form Groups */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
}

.text-input {
    width: 100%;
    padding: 14px 16px;
    font-size: 16px;
    border: 2px solid var(--border);
    border-radius: 12px;
    font-family: inherit;
    transition: all 0.3s ease;
    background: var(--white);
}

.text-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.1);
}

.text-input::placeholder {
    color: #999;
}

#greeting-who-container {
    margin-top: 20px;
    margin-bottom: 25px;
}

#greeting-who-container label {
    display: block;
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
}

.hidden {
    display: none;
}

/* Review Content */
.review-content {
    background: var(--background);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 25px;
}

.review-item {
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border);
}

.review-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.review-item strong {
    color: var(--primary-color);
    display: block;
    margin-bottom: 5px;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.review-item p {
    color: var(--text);
    font-size: 16px;
    margin: 0;
}

/* Thank You */
.thank-you-content {
    text-align: center;
    padding: 20px 0;
}

.thank-you-content h2 {
    font-size: 32px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.thank-you-content p {
    font-size: 16px;
    color: var(--text-light);
    margin-bottom: 30px;
    line-height: 1.8;
}

/* Tablet and Desktop */
@media (min-width: 768px) {
    .container {
        padding: 40px 20px;
    }

    .home-content {
        padding: 60px 50px;
    }

    .home-content h1 {
        font-size: 36px;
    }

    .intro-text {
        font-size: 18px;
    }

    .options-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    #form-container {
        padding: 40px 30px;
    }

    .form-step h2 {
        font-size: 28px;
    }
}

@media (min-width: 1024px) {
    .container {
        max-width: 700px;
    }
}