/* ============================================
   Responsive Styles
   ============================================ */

/* Extra Small Devices (phones, less than 576px) */
@media (max-width: 575.98px) {
    /* Typography */
    h1 { font-size: 1.8rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.3rem; }
    h4 { font-size: 1.1rem; }
    
    .hero-title { font-size: 1.8rem; }
    .hero-subtitle { font-size: 1rem; }
    
    /* Spacing */
    section {
        padding: 40px 0;
    }
    
    .hero {
        padding: 100px 0 50px;
    }
    
    .features-grid,
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    /* Navigation */
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
        z-index: 999;
    }
    
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .mobile-toggle {
        display: block;
    }
    
    /* Buttons */
    .hero-buttons,
    .support-buttons,
    .action-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    /* Header */
    .header {
        padding: 10px 0;
    }
    
    .logo-text {
        font-size: 0.9rem;
    }
    
    /* Footer */
    .footer {
        padding: 40px 0 20px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    /* Contact */
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    /* Steps */
    .steps {
        grid-template-columns: 1fr;
    }
    
    .step-number:after {
        display: none;
    }
    
    /* Amazon Banner */
    .banner-content {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
    
    /* Tools Tabs */
    .tab-buttons {
        flex-wrap: wrap;
    }
    
    .tab-btn {
        min-width: 120px;
        padding: 15px 10px;
        font-size: 0.9rem;
    }
    
    /* Certificate Builder */
    .builder-container {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr;
    }
    
    .sidebar {
        max-height: 400px;
    }
    
    /* Attendance Sheet */
    .participants-table-container {
        margin-left: -20px;
        margin-right: -20px;
        border-radius: 0;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    /* Social Share */
    .social-share-buttons {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Small Devices (phones, 576px and up) */
@media (min-width: 576px) and (max-width: 767.98px) {
    .container {
        max-width: 540px;
    }
    
    .features-grid,
    .tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .steps {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .step:nth-child(2) .step-number:after {
        display: none;
    }
    
    .hero-buttons {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .btn {
        min-width: 200px;
    }
}

/* Medium Devices (tablets, 768px and up) */
@media (min-width: 768px) and (max-width: 991.98px) {
    .container {
        max-width: 720px;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tools-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .steps {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .step:last-child .step-number:after {
        display: none;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .builder-container {
        grid-template-columns: 300px 1fr;
    }
}

/* Large Devices (desktops, 992px and up) */
@media (min-width: 992px) and (max-width: 1199.98px) {
    .container {
        max-width: 960px;
    }
    
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .tools-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .builder-container {
        grid-template-columns: 320px 1fr;
    }
}

/* Extra Large Devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {
    .container {
        max-width: 1140px;
    }
}

/* Landscape Orientation */
@media (max-height: 600px) and (orientation: landscape) {
    .hero {
        padding: 100px 0 50px;
        min-height: auto;
    }
    
    .hero-title {
        font-size: 1.8rem;
        margin-bottom: 15px;
    }
    
    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: 20px;
    }
    
    .sidebar {
        max-height: 400px;
        overflow-y: auto;
    }
}

/* High Resolution Screens */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    body {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .hero,
    .amazon-banner,
    .support-section,
    .social-sharing,
    .modal,
    .no-print {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
        font-size: 12pt !important;
    }
    
    .container {
        width: 100% !important;
        max-width: 100% !important;
        padding: 0 !important;
        margin: 0 !important;
    }
    
    section {
        padding: 0 !important;
        margin: 0 !important;
        page-break-inside: avoid;
    }
    
    h1, h2, h3, h4, h5, h6 {
        page-break-after: avoid;
    }
    
    p, ul, ol {
        page-break-inside: avoid;
    }
    
    a {
        color: black !important;
        text-decoration: underline !important;
    }
    
    .btn {
        display: none !important;
    }
    
    /* Certificate Print */
    .certificate-display {
        border: none !important;
        box-shadow: none !important;
        padding: 0 !important;
        margin: 0 !important;
    }
    
    /* Attendance Sheet Print */
    #attendanceSheetPreview {
        box-shadow: none !important;
        border: 1px solid #000 !important;
    }
}

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

/* Dark Mode (optional) */
@media (prefers-color-scheme: dark) {
    :root {
        --dark-color: #ecf0f1;
        --text-color: #bdc3c7;
        --light-color: #2c3e50;
        --white: #34495e;
        --border-color: #444;
    }
    
    body {
        background: var(--dark-color);
        color: var(--text-color);
    }
    
    .header,
    .feature-card,
    .contact-form,
    .tools-tabs,
    .support-card {
        background: var(--white);
    }
    
    .footer {
        background: #1a252f;
    }
}

/* Accessibility - Focus Styles */
@media (prefers-reduced-motion: no-preference) {
    :focus {
        outline: 3px solid var(--primary-color);
        outline-offset: 3px;
    }
    
    :focus:not(:focus-visible) {
        outline: none;
    }
    
    :focus-visible {
        outline: 3px solid var(--primary-color);
        outline-offset: 3px;
    }
}