/* ================================
   RESPONSIVE STYLES - A1
   Mobile-First Approach
   ================================ */

/* === LARGE TABLETS AND BELOW (1024px) === */
@media (max-width: 1024px) {
    :root {
        --font-size-6xl: 3rem;
        --font-size-5xl: 2.5rem;
        --font-size-4xl: 2rem;
        --spacing-3xl: 4rem;
    }

    .hero-title {
        font-size: var(--font-size-5xl);
    }

    .research-grid,
    .speaking-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-xl);
    }
}

/* === TABLETS (768px) === */
@media (max-width: 768px) {
    :root {
        --navbar-height: 64px;
        --font-size-6xl: 2.5rem;
        --font-size-5xl: 2rem;
        --font-size-4xl: 1.75rem;
        --spacing-3xl: 3rem;
        --spacing-2xl: 2rem;
    }

    /* Navigation */
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: var(--navbar-height);
        left: 0;
        right: 0;
        background: rgba(15, 20, 25, 0.98);
        backdrop-filter: blur(12px);
        flex-direction: column;
        gap: 0;
        padding: var(--spacing-md) 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        transform: translateY(-100%);
        opacity: 0;
        transition: transform var(--transition-base), opacity var(--transition-base);
        pointer-events: none;
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .nav-link {
        width: 100%;
        padding: var(--spacing-md) var(--spacing-lg);
        border-radius: 0;
    }

    /* Hero */
    .hero {
        min-height: auto;
        padding: calc(var(--navbar-height) + var(--spacing-xl)) 0 var(--spacing-xl);
    }

    .hero-title {
        font-size: var(--font-size-4xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-base);
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .hero-cta {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    /* Awards Ribbon */
    .awards-ribbon {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .award-item {
        justify-content: center;
    }

    /* Calculator */
    .checkbox-group {
        grid-template-columns: 1fr;
    }

    .results-actions {
        flex-direction: column;
    }

    /* Research & Speaking */
    .research-grid,
    .speaking-grid {
        grid-template-columns: 1fr;
    }

    /* CTA */
    .cta-title {
        font-size: var(--font-size-3xl);
    }

    .cta-buttons {
        flex-direction: column;
    }

    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

/* === MOBILE (480px) === */
@media (max-width: 480px) {
    :root {
        --spacing-xl: 2rem;
        --spacing-lg: 1.5rem;
    }

    .container {
        padding: 0 var(--spacing-md);
    }

    .hero-title {
        font-size: var(--font-size-3xl);
    }

    .section-title {
        font-size: var(--font-size-2xl);
    }

    .calculator-form,
    .risk-results {
        padding: var(--spacing-md);
    }

    .research-card,
    .speaking-card {
        padding: var(--spacing-md);
    }

    .score-circle {
        width: 120px;
        height: 120px;
    }

    #risk-score-number {
        font-size: var(--font-size-3xl);
    }
}

/* === LANDSCAPE ORIENTATION === */
@media (max-height: 600px) and (orientation: landscape) {
    .hero {
        min-height: auto;
        padding: calc(var(--navbar-height) + var(--spacing-lg)) 0 var(--spacing-lg);
    }

    .hero-stats {
        flex-direction: row;
        gap: var(--spacing-lg);
    }
}

/* === 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-line {
        animation: none;
    }

    .badge-dot {
        animation: none;
    }
}

/* === PRINT STYLES === */
@media print {
    .navbar,
    .hamburger,
    .scroll-indicator,
    .cta-section,
    .footer {
        display: none;
    }

    body {
        background: white;
        color: black;
    }

    .neural-background {
        display: none;
    }

    a[href]:after {
        content: " (" attr(href) ")";
    }
}