:root {
    --primary-color: #333333;
    --secondary-color: #FF3366; /* STUDIO X Pink */
    --accent-color: #FF3366;
    --background-color: #FFFFFF;
    --text-color: #333333;
    --card-background: #FFFFFF;
    --border-radius: 8px;
    --transition-speed: 0.3s;
    --border-color: #E5E5E5;
    --hover-color: #FF3366;
    --disabled-color: #E0E0E0;
    --progress-bar-bg: #F5F5F5;
    --safe-area-inset-top: env(safe-area-inset-top);
    --safe-area-inset-bottom: env(safe-area-inset-bottom);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    padding-top: calc(20px + var(--safe-area-inset-top));
    padding-bottom: calc(20px + var(--safe-area-inset-bottom));
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
}

.app-container {
    max-width: 100%;
    margin: 0 auto;
    padding: 1rem 1rem calc(4rem + var(--safe-area-inset-bottom)) 1rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header Styles */
.calculator-header {
    text-align: center;
    margin-bottom: 2rem;
    padding: 1rem;
    background: var(--background-color);
    z-index: 10;
}

.logo-container {
    margin-bottom: 2rem;
}

.logo-container h1 {
    font-size: 2rem;
    color: var(--primary-color);
    margin: 0;
    font-weight: 700;
    letter-spacing: -0.5px;
}

/* Progress Bar */
.progress-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 100%;
    margin: 2rem 0;
    position: relative;
    overflow-x: auto;
    padding: 0 1rem;
}

.progress-bar::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--border-color);
    transform: translateY(-50%);
    z-index: 0;
}

.progress-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 1;
    padding: 0 1rem;
    min-width: 80px;
}

.progress-step i {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: white;
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--border-color);
    margin-bottom: 0.5rem;
    transition: all var(--transition-speed) ease;
    font-size: 1rem;
}

.progress-step.active i {
    background: var(--secondary-color);
    border-color: var(--secondary-color);
    color: white;
}

.progress-step span {
    font-size: 0.8rem;
    color: #666;
    white-space: nowrap;
}

.progress-step.active span {
    color: var(--secondary-color);
    font-weight: 600;
}

/* Step Container */
.step-container {
    background: var(--card-background);
    border-radius: 16px;
    padding: 1.25rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    margin-bottom: 1rem;
    transition: all var(--transition-speed) ease;
    border: 1px solid var(--border-color);
}

.step-container.hidden {
    display: none;
}

.step-container h2 {
    font-size: 1.4rem;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

/* Options Grid */
.options-grid, .features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin-top: 1rem;
}

.option-card, .feature-card {
    background: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.25rem;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 12px 20px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.option-card:hover, .feature-card:hover {
    border-color: var(--hover-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 51, 102, 0.1);
}

.option-card.selected, .feature-card.selected {
    border-color: var(--secondary-color);
    background-color: rgba(255, 51, 102, 0.05);
}

.option-card i, .feature-card i {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-bottom: 0.75rem;
}

.option-card h3, .feature-card h3 {
    font-size: 1.1rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.option-card p, .feature-card p {
    font-size: 0.85rem;
    color: #666;
    margin-top: 0.5rem;
}

/* Result Card */
.result-card {
    background: var(--card-background);
    border-radius: var(--border-radius);
    padding: 1.25rem;
    text-align: center;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.price-range {
    font-size: 2rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin: 1rem 0;
    letter-spacing: -1px;
}

/* App Information Section */
.app-info-section {
    background: var(--card-background);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.app-info-section h3 {
    color: var(--secondary-color);
    font-size: 1.2rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.selection-summary {
    list-style: none;
    padding: 0;
    margin: 0;
}

.selection-summary li {
    display: flex;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
    color: #666;
    font-size: 0.9rem;
    line-height: 1.5;
    text-align: left;
}

.selection-summary li strong {
    color: var(--primary-color);
    min-width: 120px;
    margin-right: 1rem;
    text-align: left;
}

.selection-summary li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

/* Add text alignment for description */
.selection-summary li > *:not(strong) {
    text-align: left;
    flex: 1;
}

/* AI Analysis Section */
.ai-analysis-section {
    margin: 2rem 0;
    padding: 1.5rem;
    background: var(--card-background);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.analysis-item, .recommendation-item {
    background: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.25rem;
    margin-bottom: 1rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.analysis-item h4, .recommendation-item h4 {
    color: var(--secondary-color);
    font-size: 1rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.analysis-content, .recommendation-content {
    color: #666;
    font-size: 0.9rem;
    line-height: 1.5;
}

/* CTA Buttons Container */
.cta-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
    align-items: stretch;
}

/* CTA Button Styles */
.cta-button {
    padding: 0.875rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-width: 200px;
}

.cta-button.primary {
    background: var(--secondary-color);
    color: white;
}

.cta-button.secondary {
    background: transparent;
    border: 2px solid var(--secondary-color);
    color: var(--secondary-color);
}

.cta-button.reset {
    background: #f5f5f5;
    border: 1px solid #ddd;
    color: #666;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.cta-button.reset:hover {
    background: #ebebeb;
    color: #333;
}

@media (min-width: 768px) {
    .cta-buttons {
        flex-direction: row;
        justify-content: center;
    }
    
    .cta-button {
        flex: 0 1 auto;
    }
}

/* Navigation Buttons */
.navigation-buttons {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 2rem;
    padding: 1rem;
    background: white;
    border-top: 1px solid var(--border-color);
}

.nav-button {
    padding: 0.875rem 1.5rem;
    border: none;
    border-radius: 8px;
    background: var(--secondary-color);
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    min-width: 120px;
}

.nav-button:disabled {
    background: var(--disabled-color);
    cursor: not-allowed;
    color: #999;
}

.nav-button:not(:disabled):hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 51, 102, 0.2);
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    max-width: 500px;
    width: 90%;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.modal.show {
    display: flex;
}

/* Input Styles */
.input-group input,
.input-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--card-background);
    color: var(--text-color);
    font-size: 0.95rem;
    transition: all var(--transition-speed) ease;
}

.input-group input:focus,
.input-group textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 2px rgba(255, 51, 102, 0.1);
}

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
    font-weight: 600;
}

/* Responsive Design */
@media (min-width: 768px) {
    .app-container {
        max-width: 768px;
        padding: 2rem 2rem calc(4rem + var(--safe-area-inset-bottom)) 2rem;
    }

    .navigation-buttons {
        max-width: 768px;
        left: 50%;
        transform: translateX(-50%);
        border-radius: var(--border-radius) var(--border-radius) 0 0;
    }

    .options-grid, .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

.hidden {
    display: none !important;
}

.app-calculator-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    background: #fff;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.app-calculator-container .calculator-header {
    text-align: center;
    margin-bottom: 2rem;
    padding: 1rem;
    background: #fff;
    border-radius: 12px;
    -webkit-box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.app-calculator-container .logo-container {
    margin-bottom: 1.5rem;
}

.app-calculator-container .logo-container h1 {
    font-size: 1.8rem;
    margin: 0;
    color: #333;
}

.app-calculator-container .progress-container {
    max-width: 800px;
    margin: 2rem auto;
    position: relative;
    padding: 0;
    -webkit-overflow-scrolling: touch;
}

.app-calculator-container .progress-steps {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: justify;
    -ms-flex-pack: justify;
    justify-content: space-between;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    position: relative;
    padding: 0 20px;
}

.app-calculator-container .progress-steps::before {
    content: '';
    position: absolute;
    top: 25px;
    left: 60px;
    right: 60px;
    height: 2px;
    background: #E5E5E5;
    z-index: 1;
}

.app-calculator-container .progress-step {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    position: relative;
    z-index: 2;
    background: #fff;
    padding: 0 10px;
    min-width: 100px;
}

.app-calculator-container .progress-step i {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid #E5E5E5;
    display: flex !important;
    align-items: center;
    justify-content: center;
    color: #666;
    margin-bottom: 8px;
    transition: all 0.3s ease;
    font-size: 24px;
    position: relative;
    z-index: 2;
}

.app-calculator-container .progress-step i {
    font-family: 'Material Icons' !important;
    font-weight: normal;
    font-style: normal;
    font-size: 24px;
    line-height: 1;
    letter-spacing: normal;
    text-transform: none;
    display: flex;
    white-space: nowrap;
    word-wrap: normal;
    direction: ltr;
    -webkit-font-smoothing: antialiased;
}

.app-calculator-container .progress-step span {
    font-size: 0.9rem;
    color: #666;
    white-space: nowrap;
    text-align: center;
    display: block;
    margin-top: 4px;
    font-weight: 500;
}

.app-calculator-container .progress-step.active span {
    color: #FF3366;
    font-weight: 600;
}

.app-calculator-container .step-container {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 4rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.app-calculator-container .step-container.hidden {
    display: none;
}

.app-calculator-container .navigation-buttons {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 2rem;
    padding: 1rem;
    background: white;
    border-top: 1px solid #E5E5E5;
    position: relative;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 10;
}

.app-calculator-container .nav-button {
    padding: 0.875rem 1.5rem;
    border: none;
    border-radius: 8px;
    background: #FF3366;
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    min-width: 120px;
}

.app-calculator-container .nav-button:disabled {
    background: #E0E0E0;
    cursor: not-allowed;
    color: #999;
}

.app-calculator-container .nav-button:not(:disabled):hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 51, 102, 0.2);
}

@media (max-width: 768px) {
    .app-calculator-container {
        padding: 1rem;
        border-radius: 0;
        margin: 0;
        width: 100%;
    }

    .app-calculator-container .calculator-header {
        padding: 1rem 0;
    }

    .app-calculator-container .logo-container h1 {
        font-size: 1.5rem;
    }

    .app-calculator-container .navigation-buttons {
        padding: 1rem;
        margin-top: 1rem;
        position: relative;
    }

    .app-calculator-container .progress-container {
        margin: 1rem -1rem;
        overflow-x: auto;
        padding: 0 1rem;
        -webkit-overflow-scrolling: touch;
        overflow-scrolling: touch;
    }

    .app-calculator-container .progress-steps {
        min-width: 600px;
        padding: 0 20px;
    }

    .app-calculator-container .progress-steps::before {
        left: 45px;
        right: 45px;
    }

    .app-calculator-container .progress-step {
        min-width: 80px;
        max-width: none;
    }

    .app-calculator-container .progress-step i {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .app-calculator-container .progress-step span {
        font-size: 0.8rem;
    }
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    max-width: 500px;
    width: 90%;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.modal.show {
    display: flex;
}

.modal-buttons {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 2rem;
}

.modal-buttons .cta-button {
    flex: 1;
    min-width: 120px;
}

@media (max-width: 480px) {
    .modal-buttons {
        flex-direction: column;
    }
    
    .modal-buttons .cta-button {
        width: 100%;
    }
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin: 2rem 0;
    width: 100%;
}

.feature-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 160px;
}

.feature-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 51, 102, 0.1);
    border-color: var(--secondary-color);
}

.feature-card.selected {
    background-color: rgba(255, 51, 102, 0.05);
    border-color: var(--secondary-color);
}

.feature-card i {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.feature-card p {
    font-size: 0.85rem;
    color: #666;
    line-height: 1.4;
}

.feature-description {
    text-align: center;
    color: #666;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 0.75rem;
        margin: 1rem 0;
    }

    .feature-card {
        padding: 1rem;
        min-height: 140px;
    }

    .feature-card h3 {
        font-size: 0.9rem;
    }

    .feature-card p {
        font-size: 0.8rem;
    }
}

/* Safari-specific fixes */
@media not all and (min-resolution:.001dpcm) { 
    @supports (-webkit-appearance:none) {
        .app-calculator-container .progress-step i,
        .feature-card i,
        .option-card i {
            display: flex !important;
            font-family: 'Material Icons' !important;
        }
    }
}

/* Force icon display for all browsers */
.feature-card i,
.option-card i {
    display: flex !important;
    align-items: center;
    justify-content: center;
    font-family: 'Material Icons' !important;
    font-weight: normal;
    font-style: normal;
    font-size: 24px;
    line-height: 1;
    color: var(--secondary-color);
    margin-bottom: 0.75rem;
}

.modal-buttons {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 2rem;
}

.modal-buttons button {
    flex: 1;
    min-width: 120px;
    padding: 12px 24px;
    border-radius: var(--border-radius);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
}

.modal-buttons .cta-button.primary {
    background: var(--secondary-color);
    color: white;
    border: none;
}

.modal-buttons .cta-button.secondary {
    background: transparent;
    border: 2px solid var(--secondary-color);
    color: var(--secondary-color);
}

.modal-buttons button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 51, 102, 0.2);
}

@media (max-width: 480px) {
    .modal-buttons {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .modal-buttons button {
        width: 100%;
    }
}