/* ===========================================
   RESPONSIVE DESIGN FOR BMI CALCULATOR
   =========================================== */

/* Large Tablets and Small Desktops (1024px and below) */
@media screen and (max-width: 1024px) {
    main {
        padding: 20px;
        gap: 20px;
    }
    
    .main-container, 
    .categories, 
    .bmi-info {
        max-width: 450px;
    }
    
    .header h1 {
        font-size: 2.2rem;
    }
}

/* Tablets (768px and below) */
@media screen and (max-width: 768px) {
    main {
        flex-direction: column;
        align-items: center;
        padding: 15px;
        gap: 25px;
    }
    
    .main-container {
        width: 100%;
        max-width: 600px;
        margin-bottom: 0;
    }
    
    .right-box {
        width: 100%;
        max-width: 600px;
        gap: 20px;
    }
    
    .categories, 
    .bmi-info {
        width: 100%;
        max-width: 600px;
        min-width: unset;
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .header p {
        font-size: 1rem;
    }
    
    /* Adjust table for better mobile readability */
    table th, table td {
        padding: 12px 8px;
        font-size: 0.95rem;
    }
    
    .bmi-result2 {
        width: 70%;
        font-size: 1.1rem;
        padding: 16px;
    }
}

/* Small Tablets and Large Phones (600px and below) */
@media screen and (max-width: 600px) {
    body {
        min-height: 100vh;
    }
    
    main {
        padding: 10px;
        gap: 20px;
    }
    
    .box {
        width: 95%;
        padding: 0 10px;
    }
    
    .header {
        margin-bottom: 30px;
    }
    
    .header h1 {
        font-size: 1.8rem;
        margin-bottom: 8px;
    }
    
    .header p {
        font-size: 0.95rem;
    }
    
    /* Form adjustments */
    .input-group {
        margin-bottom: 20px;
    }
    
    .input-group input {
        padding: 12px 15px;
        font-size: 1rem;
    }
    
    .unit-toggle {
        margin-bottom: 20px;
    }
    
    .unit-toggle button {
        padding: 10px;
        font-size: 0.95rem;
    }
    
    .sub-button {
        padding: 15px;
        font-size: 1.1rem;
        margin-bottom: 20px;
    }
    
    /* Categories section */
    .categories {
        margin-bottom: 20px;
    }
    
    .category-header h1 {
        font-size: 1.3rem;
        padding: 8px 0;
    }
    
    table th, table td {
        padding: 10px 6px;
        font-size: 0.9rem;
    }
    
    .bmi-result2 {
        width: 80%;
        font-size: 1rem;
        padding: 14px;
    }
    
    /* BMI Info section */
    .bmi-info {
        padding: 15px;
        font-size: 0.95rem;
    }
    
    .bmi-info span {
        font-size: 1.3rem;
    }
}

/* Mobile Phones (480px and below) */
@media screen and (max-width: 480px) {
    /* Navigation adjustments */
    .navbar ul {
        gap: 15px;
        padding-top: 12px;
    }
    
    .navbar li {
        font-size: 1rem;
    }
    
    main {
        padding: 8px;
        padding-top: 15px;
    }

    .box {
        width: 100%;
        padding: 0 8px;
        border-radius: 15px;
    }
    
    .header h1 {
        font-size: 1.6rem;
    }
    
    .header p {
        font-size: 0.9rem;
    }
    
    /* Make form more touch-friendly */
    .input-group input {
        padding: 14px 12px;
        border-radius: 10px;
    }
    
    .unit-toggle {
        border-radius: 10px;
    }
    
    .unit-toggle button {
        padding: 12px 8px;
        border-radius: 6px;
        font-size: 0.9rem;
    }
    
    .sub-button {
        border-radius: 10px;
        font-size: 1rem;
    }
    
    /* Categories adjustments */
    .categories, .bmi-info {
        border-radius: 15px;
    }
    
    .category-header h1 {
        font-size: 1.2rem;
    }
    
    /* Make table more compact */
    table th, table td {
        padding: 8px 4px;
        font-size: 0.85rem;
    }
    
    table th {
        font-size: 0.8rem;
    }
    
    .bmi-result2 {
        width: 90%;
        font-size: 0.95rem;
        padding: 12px;
        border-radius: 10px;
    }
    
    .bmi-info {
        padding: 12px;
        font-size: 0.9rem;
    }
    
    .bmi-info span {
        font-size: 1.2rem;
    }
}

/* Extra Small Devices (320px and below) */
@media screen and (max-width: 320px) {
    .header h1 {
        font-size: 1.4rem;
    }
    
    .header p {
        font-size: 0.85rem;
    }
    
    .input-group input {
        font-size: 0.95rem;
    }
    
    .unit-toggle button {
        font-size: 0.85rem;
    }
    
    .sub-button {
        font-size: 0.95rem;
    }
    
    .category-header h1 {
        font-size: 1.1rem;
    }
    
    table th, table td {
        padding: 6px 2px;
        font-size: 0.8rem;
    }
    
    .bmi-result2 {
        font-size: 0.9rem;
        padding: 10px;
    }
    
    .bmi-info {
        font-size: 0.85rem;
    }
}

/* Landscape orientation adjustments for mobile */
@media screen and (max-width: 768px) and (orientation: landscape) {
    main {
        flex-direction: row;
        align-items: flex-start;
        overflow-x: auto;
    }
    
    .main-container {
        flex-shrink: 0;
        margin-right: 20px;
    }
    
    .right-box {
        flex-shrink: 0;
        max-width: 400px;
    }
}

/* Print styles */
@media print {
    nav {
        display: none;
    }
    
    main {
        flex-direction: column;
        padding: 0;
    }
    
    .main-container, .categories, .bmi-info {
        box-shadow: none;
        border: 1px solid #ddd;
        margin-bottom: 20px;
    }
}