/* ===================================
   TDEE & PFC Calculator - Responsive Design
   =================================== */

/* Large Desktop (1440px and up) */
@media (min-width: 1440px) {
    .container {
        max-width: 1320px;
    }
    
    h1 {
        font-size: 3.5rem;
    }
    
    .tdee-number {
        font-size: 3.5rem;
    }
}

/* Desktop (1024px to 1439px) */
@media (max-width: 1439px) and (min-width: 1024px) {
    .container {
        max-width: 1200px;
    }
}

/* Tablet Landscape (768px to 1023px) */
@media (max-width: 1023px) and (min-width: 768px) {
    .container {
        max-width: 720px;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 1.6rem;
    }
    
    .goal-cards {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }
    
    .pfc-breakdown {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
}

/* Mobile Landscape & Tablet Portrait (576px to 767px) */
@media (max-width: 767px) and (min-width: 576px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .site-header {
        padding: var(--spacing-xl) 0;
    }
    
    .glass-card {
        padding: var(--spacing-lg);
    }
    
    .gender-selection {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-sm);
    }
    
    .goal-cards {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .pfc-breakdown {
        grid-template-columns: 1fr;
        max-width: 350px;
        margin: 0 auto;
    }
    
    .tdee-number {
        font-size: 2.5rem;
    }
    
    .nutrient-number {
        font-size: 2rem;
    }
}

/* Monetization Features Responsive Design */

/* Large Desktop (1440px and up) */
@media (min-width: 1440px) {
    .product-card {
        max-width: 800px;
        margin: 0 auto;
    }
    
    .benefits-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Desktop (1024px to 1439px) */
@media (max-width: 1439px) and (min-width: 1024px) {
    .benefits-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Tablet Landscape (768px to 1023px) */
@media (max-width: 1023px) and (min-width: 768px) {
    .product-card {
        max-width: 600px;
        margin: 0 auto;
    }
    
    .product-image {
        width: 180px;
        height: 180px;
    }
    
    .banner-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .channel-info {
        justify-content: center;
    }
    
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile Landscape & Tablet Portrait (576px to 767px) */
@media (max-width: 767px) and (min-width: 576px) {
    .protein-recommendation {
        padding: var(--spacing-lg);
    }
    
    .product-card {
        flex-direction: column;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .product-image {
        width: 100%;
        height: 200px;
    }
    
    .youtube-banner {
        padding: var(--spacing-lg);
    }
    
    .banner-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .channel-info {
        flex-direction: column;
        text-align: center;
    }
    
    .taronii-photo {
        width: 70px;
        height: 70px;
    }
    
    .youtube-icon {
        font-size: 1.6rem;
        bottom: -4px;
        right: -4px;
    }
    
    .channel-name {
        font-size: 1.1rem;
    }
    
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile Portrait (320px to 575px) */
@media (max-width: 575px) {
    /* Base adjustments */
    html {
        font-size: 14px;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    /* Typography adjustments */
    h1 {
        font-size: 1.75rem;
        line-height: 1.3;
    }
    
    h2 {
        font-size: 1.3rem;
    }
    
    h3 {
        font-size: 1.1rem;
    }
    
    /* Header adjustments */
    .site-header {
        padding: var(--spacing-lg) 0;
    }
    
    .site-subtitle {
        font-size: 1rem;
    }
    
    /* Card adjustments */
    .glass-card {
        padding: var(--spacing-md);
        border-radius: var(--radius-lg);
    }
    
    /* Form adjustments */
    .form-group {
        margin-bottom: var(--spacing-md);
    }
    
    .gender-selection {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-xs);
    }
    
    .gender-card {
        padding: var(--spacing-md);
    }
    
    .gender-icon {
        font-size: 1.5rem;
    }
    
    input[type="number"],
    select {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 16px; /* Prevents zoom on iOS */
    }
    
    .calculate-btn {
        width: 100%;
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: 1rem;
    }
    
    /* Results adjustments */
    .tdee-number {
        font-size: 2rem;
    }
    
    .result-unit {
        font-size: 1.2rem;
    }
    
    .goal-cards {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .goal-card {
        padding: var(--spacing-md);
    }
    
    .goal-icon {
        font-size: 2rem;
    }
    
    .goal-card h4 {
        font-size: 1.1rem;
    }
    
    /* PFC Details adjustments */
    .target-calories {
        font-size: 1.1rem;
    }
    
    .calories-value {
        font-size: 1.3rem;
    }
    
    .pfc-breakdown {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .nutrient-card {
        padding: var(--spacing-md);
    }
    
    .nutrient-number {
        font-size: 1.8rem;
    }
    
    .nutrient-unit {
        font-size: 1.1rem;
    }
    
    /* Footer adjustments */
    .site-footer {
        padding: var(--spacing-lg) 0;
    }
    
    .footer-nav {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .footer-nav a {
        margin: 0;
    }
    
    /* Monetization Features Mobile Adjustments */
    .protein-recommendation {
        padding: var(--spacing-md);
        margin-top: var(--spacing-lg);
    }
    
    .recommendation-title {
        font-size: 1.3rem;
    }
    
    .product-card {
        flex-direction: column;
    }
    
    .product-image {
        width: 100%;
        height: 180px;
    }
    
    .product-info {
        padding: var(--spacing-md);
    }
    
    .product-name {
        font-size: 1.1rem;
    }
    
    .feature-item {
        font-size: 0.85rem;
    }
    
    .youtube-morning-section {
        margin-top: var(--spacing-lg);
    }
    
    .morning-title {
        font-size: 1.5rem;
    }
    
    .youtube-banner {
        padding: var(--spacing-md);
    }
    
    .banner-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .channel-info {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
    }
    
    .taronii-photo {
        width: 60px;
        height: 60px;
    }
    
    .youtube-icon {
        font-size: 1.4rem;
        bottom: -3px;
        right: -3px;
    }
    
    .channel-name {
        font-size: 1rem;
    }
    
    .channel-schedule {
        font-size: 0.9rem;
    }
    
    .live-badge {
        font-size: 0.8rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .cta-text {
        font-size: 1rem;
    }
    
    .youtube-cta {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.9rem;
    }
    
    .benefits-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-sm);
    }
    
    .benefit-item {
        padding: var(--spacing-sm);
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-xs);
    }
    
    .benefit-icon {
        font-size: 1.2rem;
    }
    
    .benefit-text {
        font-size: 0.85rem;
    }
}

/* Extra Small Mobile (below 320px) */
@media (max-width: 319px) {
    html {
        font-size: 12px;
    }
    
    h1 {
        font-size: 1.5rem;
    }
    
    .gender-selection {
        grid-template-columns: 1fr;
    }
    
    .goal-icon {
        font-size: 1.5rem;
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    /* Increase touch targets */
    input[type="number"],
    select,
    button {
        min-height: 44px;
    }
    
    .gender-card {
        min-height: 80px;
    }
    
    .goal-card {
        min-height: 120px;
    }
    
    /* Remove hover effects on touch devices */
    .goal-card:hover,
    .gender-card:hover,
    .nutrient-card:hover {
        transform: none;
    }
}

/* Landscape orientation adjustments */
@media (max-height: 600px) and (orientation: landscape) {
    .site-header {
        padding: var(--spacing-md) 0;
    }
    
    h1 {
        font-size: 1.5rem;
    }
    
    .glass-card {
        padding: var(--spacing-md);
    }
    
    .section-title {
        margin-bottom: var(--spacing-md);
    }
}

/* Print styles */
@media print {
    body {
        background: white;
    }
    
    .glass-card {
        box-shadow: none;
        border: 1px solid #ddd;
        page-break-inside: avoid;
    }
    
    .calculate-btn,
    .goal-card {
        display: none;
    }
    
    .site-header,
    .site-footer {
        background: none;
    }
}