/* =========================================
   RESPONSIVE.CSS — Unified Mobile & Tablet Fixes
   ========================================= */

/* --- TABLET AND BELOW (Max 1023px) --- */
@media (max-width: 1023px) {

    /* Grids & Columns */
    .skills__grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .tools__grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .process__steps {
        display: flex;
        flex-wrap: nowrap;
        overflow-x: auto;
        gap: 16px;
        padding-bottom: 16px;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: thin;
    }

    .process__step {
        flex: 0 0 240px;
        min-width: 240px;
        scroll-snap-align: start;
    }

    .hero-z__desc {
        max-width: 90%;
        margin-left: auto;
        margin-right: auto;
        text-align: center;
    }

    .contact__grid {
        align-items: stretch;
        width: 100%;
    }

    .contact__info,
    .contact__form-wrap,
    .contact-form,
    .form-group,
    .form-input,
    .form-textarea {
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }
}

/* --- MOBILE ONLY (Max 767px) --- */
@media (max-width: 767px) {
    :root {
        --spacing-3xl: 64px;
        --spacing-2xl: 48px;
        --container-pad: 20px;
        --fs-hero: clamp(34px, 10vw, 42px);
        /* Fluid typography for hero */
    }

    /* Navigation */
    .nav__links {
        display: none;
    }

    .nav__toggle {
        display: flex;
    }

    /* Hero */
    .hero-z {
        min-height: calc(100vh - var(--nav-height, 70px));
        text-align: center;
    }

    .hero-z__container {
        grid-template-columns: 1fr;
        display: flex;
        flex-direction: column;
        gap: var(--spacing-xl);
        padding-top: 40px;
        align-items: center;
    }

    .hero-z__content {
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .hero-z__desc {
        margin: 0 auto 32px;
        font-size: 16px;
    }

    .hero-z__actions {
        display: flex;
        flex-direction: column;
        width: 100%;
        gap: 12px;
    }

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

    /* Hero Graphics - Make proportional to viewport */
    .hero-z__visual {
        width: 100%;
        display: flex;
        justify-content: center;
        align-items: center;
        min-height: 280px;
    }

    .hero-flower-wrap {
        width: 100%;
        max-width: 320px;
        margin: 0 auto;
    }

    .hero-flower-svg {
        width: 100%;
        height: auto;
    }

    /* Other Case Study Hero Graphics */
    .hero-intersection {
        width: 240px;
        height: 240px;
    }

    .hi-ring--outer {
        width: 230px;
        height: 230px;
    }

    .hi-ring--mid {
        width: 170px;
        height: 170px;
    }

    .hi-pill {
        display: none;
    }

    /* Interactive / Pointers */
    .hero__floaters,
    .cursor,
    .cursor-follower {
        display: none !important;
    }

    /* About Section */
    .about__grid {
        grid-template-columns: 1fr;
        display: flex;
        flex-direction: column;
        gap: var(--spacing-xl);
    }

    .about__visual {
        order: -1;
    }

    .about__photo-wrap {
        max-width: 250px;
        margin: 0 auto;
    }

    .about__photo {
        width: 100%;
        height: auto;
        aspect-ratio: 4/5;
    }

    .about__actions {
        display: flex;
        flex-direction: column;
        gap: 12px;
    }

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

    /* Grids to single column for mobile */
    .story-grid,
    .work__grid,
    .projects-grid,
    .highlight-cards,
    .social-proof__grid,
    .contact__grid,
    .footer__grid,
    .bento-grid,
    .snapshot-grid,
    .insight-cards,
    .goal-cards,
    .philosophy__grid,
    .timeline__card-header,
    .footer__bottom,
    .psil-grid {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .contact__grid {
        align-items: stretch !important;
        width: 100% !important;
    }

    .contact__info,
    .contact__form-wrap,
    .contact-form,
    .form-group,
    .form-input,
    .form-textarea {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
    }

    .v-step-content.b-a-grid {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .sp-card {
        border-right: none;
        border-bottom: 1px solid var(--color-border);
        padding: var(--spacing-md) 0;
    }

    .sp-card:last-child {
        border-bottom: none;
    }

    .timeline {
        padding-left: 0;
        border-left: none;
    }

    .timeline::before,
    .timeline__dot {
        display: none !important;
    }

    .timeline__item {
        padding-left: 0 !important;
        margin-left: 0 !important;
    }

    .skills__tabs {
        flex-wrap: wrap;
        justify-content: center;
    }

    .skills__grid {
        grid-template-columns: 1fr 1fr;
    }

    .tools__grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .testimonials__wrapper {
        padding: 0;
    }

    .testimonial-card {
        padding: 24px 20px;
        font-size: 15px;
    }

    .footer__brand {
        text-align: center;
    }

    .footer__social-icons {
        display: flex;
        flex-wrap: nowrap;
        overflow-x: auto;
        padding-bottom: 8px;
        scrollbar-width: none;
        gap: 12px;
    }

    .footer__social-icons::-webkit-scrollbar {
        display: none;
    }

    /* Fix Horizontal Overflows globally */
    img,
    svg,
    video,
    iframe,
    canvas {
        max-width: 100%;
        height: auto;
    }

    .postcard-card__notch {
        top: 108px;
    }

    .screen-slide {
        aspect-ratio: 4/5 !important;
        min-width: 90% !important;
        max-width: 90% !important;
    }

    .flow-diagram {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
        overflow-x: visible;
    }

    .flow-diagram .flow-arrow {
        transform: rotate(90deg);
        font-size: 16px;
        opacity: 0.5;
    }
}

/* --- ACCESSIBILITY / MOTION / PRINT --- */
@media print {

    .nav,
    .cursor,
    .cursor-follower,
    .back-to-top,
    .hero__bg,
    .loader {
        display: none !important;
    }

    .hero {
        min-height: auto;
        padding: 40px 0;
    }

    a {
        text-decoration: underline;
    }
}

@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation: none !important;
        transition: none !important;
    }
}

@media (max-height: 500px) and (orientation: landscape) {
    .hero-z {
        min-height: auto;
        padding: 100px 0;
    }

    .hero__floaters,
    .hero-z__visual {
        display: none;
    }
}

/* ==========================================================================
   DESKTOP BASE STYLES FOR TRACEABILITY & PROCESS TRACKS (Min 768px)
   ========================================================================== */
@media (min-width: 768px) {
    .traceability-cards-wrapper {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-xl);
    }
    .challenge-outcome-card {
        background: var(--color-surface);
        border-radius: var(--radius-lg);
        padding: var(--spacing-xl);
        border: 1px solid var(--color-border);
    }
    .co-track {
        display: flex;
        gap: var(--spacing-xl);
        align-items: stretch;
    }
    .co-col {
        flex: 1;
    }
    .co-col--outcome {
        border-left: 2px solid var(--color-border);
        padding-left: var(--spacing-xl);
        text-align: center;
    }
    .co-title {
        font-size: 18px;
        font-weight: 600;
        margin-bottom: 8px;
    }
    .co-title--problem { color: #EF4444; }
    .co-title--solution { color: #10B981; }
    .co-title--outcome { color: var(--color-text); }

    .ux-components-track {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-2xl);
    }

    .swipe-hint-badge {
        display: none !important;
    }
}

/* ==========================================================================
   MOBILE HORIZONTAL SWIPE TRACKS & LAYOUT ENHANCEMENTS (Max 767px)
   ========================================================================== */
@media (max-width: 767px) {
    /* Swipe Signifier Badge */
    .swipe-hint-badge {
        display: inline-flex !important;
        align-items: center;
        gap: 8px;
        font-size: 11px;
        font-weight: 600;
        letter-spacing: 0.05em;
        text-transform: uppercase;
        color: #A5B4FC;
        background: rgba(99, 102, 241, 0.12);
        border: 1px solid rgba(99, 102, 241, 0.28);
        padding: 5px 14px;
        border-radius: 20px;
        margin-bottom: 14px;
        box-shadow: 0 2px 8px rgba(99, 102, 241, 0.15);
    }

    .swipe-hint-badge .swipe-arrow {
        display: inline-block;
        font-size: 13px;
        color: #C084FC;
        animation: swipeHintPulse 1.6s ease-in-out infinite;
    }

    @keyframes swipeHintPulse {
        0%, 100% { transform: translateX(0); opacity: 0.7; }
        50% { transform: translateX(4px); opacity: 1; }
    }

    /* Horizontal Swipe Containers */
    .research-findings,
    .cs-outcomes,
    .cs-insights,
    .cs-learnings,
    .target-needs,
    .goal-cards,
    .insight-cards,
    .ux-components-track,
    .takeaways {
        display: flex !important;
        flex-direction: row !important;
        overflow-x: auto !important;
        scroll-snap-type: x mandatory !important;
        -webkit-overflow-scrolling: touch;
        gap: 16px !important;
        padding-bottom: 16px !important;
        margin-left: calc(-1 * var(--container-pad, 20px));
        margin-right: calc(-1 * var(--container-pad, 20px));
        padding-left: var(--container-pad, 20px) !important;
        padding-right: var(--container-pad, 20px) !important;
        scrollbar-width: thin !important;
        scrollbar-color: rgba(168, 85, 247, 0.5) rgba(255, 255, 255, 0.06) !important;
    }

    /* Visible Custom Smooth Scrollbars as Horizontal Signifier */
    .research-findings::-webkit-scrollbar,
    .cs-outcomes::-webkit-scrollbar,
    .cs-insights::-webkit-scrollbar,
    .cs-learnings::-webkit-scrollbar,
    .target-needs::-webkit-scrollbar,
    .goal-cards::-webkit-scrollbar,
    .insight-cards::-webkit-scrollbar,
    .ux-components-track::-webkit-scrollbar,
    .takeaways::-webkit-scrollbar,
    .co-track::-webkit-scrollbar {
        display: block !important;
        height: 5px !important;
    }

    .research-findings::-webkit-scrollbar-track,
    .cs-outcomes::-webkit-scrollbar-track,
    .cs-insights::-webkit-scrollbar-track,
    .cs-learnings::-webkit-scrollbar-track,
    .target-needs::-webkit-scrollbar-track,
    .goal-cards::-webkit-scrollbar-track,
    .insight-cards::-webkit-scrollbar-track,
    .ux-components-track::-webkit-scrollbar-track,
    .takeaways::-webkit-scrollbar-track,
    .co-track::-webkit-scrollbar-track {
        background: rgba(255, 255, 255, 0.08) !important;
        border-radius: 4px !important;
    }

    .research-findings::-webkit-scrollbar-thumb,
    .cs-outcomes::-webkit-scrollbar-thumb,
    .cs-insights::-webkit-scrollbar-thumb,
    .cs-learnings::-webkit-scrollbar-thumb,
    .target-needs::-webkit-scrollbar-thumb,
    .goal-cards::-webkit-scrollbar-thumb,
    .insight-cards::-webkit-scrollbar-thumb,
    .ux-components-track::-webkit-scrollbar-thumb,
    .takeaways::-webkit-scrollbar-thumb,
    .co-track::-webkit-scrollbar-thumb {
        background: linear-gradient(90deg, #6366F1, #A855F7) !important;
        border-radius: 4px !important;
    }

    /* CENTERED SWIPEABLE CARDS FOR RESEARCH KEY FINDINGS IN PROJECT1DETAIL.HTML */
    .research-findings {
        padding-left: max(20px, calc(50vw - 145px)) !important;
        padding-right: max(20px, calc(50vw - 145px)) !important;
        scroll-padding-inline: calc(50vw - 145px) !important;
    }

    .research-findings .research-finding {
        flex: 0 0 290px !important;
        width: 290px !important;
        min-width: 270px !important;
        max-width: 320px !important;
        scroll-snap-align: center !important;
        box-sizing: border-box !important;
    }

    /* Swipe Track Item Cards (Standard Left Align) */
    .cs-outcome,
    .cs-insight,
    .target-need,
    .goal-card,
    .insight-card,
    .takeaway-card {
        flex: 0 0 85% !important;
        min-width: 260px !important;
        max-width: 320px !important;
        scroll-snap-align: start !important;
        box-sizing: border-box !important;
    }

    .ux-components-track .ux-component {
        flex: 0 0 90% !important;
        min-width: 280px !important;
        scroll-snap-align: start !important;
        margin-bottom: 0 !important;
    }

    /* Key Learning cards in reflection */
    .cs-learnings .cs-learning {
        flex: 0 0 85% !important;
        min-width: 260px !important;
        scroll-snap-align: start !important;
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-lg);
        padding: 20px !important;
    }

    /* Design for Traceability section on mobile */
    .traceability-cards-wrapper {
        display: flex;
        flex-direction: column;
        gap: 16px;
    }
    .challenge-outcome-card {
        background: var(--color-surface);
        border-radius: var(--radius-lg);
        padding: 16px;
        border: 1px solid var(--color-border);
    }
    .co-track {
        display: flex !important;
        flex-direction: row !important;
        overflow-x: auto !important;
        scroll-snap-type: x mandatory !important;
        gap: 12px !important;
        padding-bottom: 8px !important;
        scrollbar-width: thin !important;
    }
    .co-col {
        flex: 0 0 82% !important;
        min-width: 230px !important;
        scroll-snap-align: start !important;
        background: var(--color-surface-2, rgba(255,255,255,0.03));
        border-radius: 12px;
        padding: 16px !important;
        box-sizing: border-box !important;
    }
    .co-title {
        font-size: 16px;
        font-weight: 600;
        margin-bottom: 8px;
    }
    .co-title--problem { color: #EF4444; }
    .co-title--solution { color: #10B981; }
    .co-title--outcome { color: var(--color-text); }

    /* Project 2 Tree Diagram Arrow Mobile Fix (Downward ↓) */
    .tree-diagram .flow-arrow {
        transform: none !important;
    }

    /* Project 2 Detail Mobile Horizontal Swipe Tracks */
    .research-insights,
    .research-findings-grid,
    .cs-flow,
    .design-decisions,
    .validation-grid,
    .ps-transform-track,
    .tc-list {
        display: flex !important;
        flex-direction: row !important;
        flex-wrap: nowrap !important;
        overflow-x: auto !important;
        scroll-snap-type: x mandatory !important;
        -webkit-overflow-scrolling: touch !important;
        gap: 16px !important;
        width: 100vw !important;
        position: relative !important;
        left: 50% !important;
        right: 50% !important;
        margin-left: -50vw !important;
        margin-right: -50vw !important;
        padding-left: var(--container-pad, 20px) !important;
        padding-right: var(--container-pad, 20px) !important;
        padding-bottom: 12px !important;
        box-sizing: border-box !important;
        scrollbar-width: thin !important;
        scrollbar-color: rgba(168, 85, 247, 0.5) rgba(255, 255, 255, 0.06) !important;
    }

    .research-insight,
    .research-findings-grid .research-finding,
    .cs-flow__step,
    .design-decisions .design-decision,
    .validation-grid .validation-item,
    .ps-transform-track .ps-transform,
    .tc-list .tc-item {
        flex: 0 0 85% !important;
        min-width: 270px !important;
        max-width: 320px !important;
        scroll-snap-align: start !important;
        box-sizing: border-box !important;
        margin-bottom: 0 !important;
    }

    .research-insights::-webkit-scrollbar,
    .research-findings-grid::-webkit-scrollbar,
    .cs-flow::-webkit-scrollbar,
    .design-decisions::-webkit-scrollbar,
    .validation-grid::-webkit-scrollbar,
    .ps-transform-track::-webkit-scrollbar,
    .tc-list::-webkit-scrollbar {
        display: block !important;
        height: 5px !important;
    }

    .research-insights::-webkit-scrollbar-track,
    .research-findings-grid::-webkit-scrollbar-track,
    .cs-flow::-webkit-scrollbar-track,
    .design-decisions::-webkit-scrollbar-track,
    .validation-grid::-webkit-scrollbar-track,
    .ps-transform-track::-webkit-scrollbar-track,
    .tc-list::-webkit-scrollbar-track {
        background: rgba(255, 255, 255, 0.08) !important;
        border-radius: 4px !important;
    }

    .research-insights::-webkit-scrollbar-thumb,
    .research-findings-grid::-webkit-scrollbar-thumb,
    .cs-flow::-webkit-scrollbar-thumb,
    .design-decisions::-webkit-scrollbar-thumb,
    .validation-grid::-webkit-scrollbar-thumb,
    .ps-transform-track::-webkit-scrollbar-thumb,
    .tc-list::-webkit-scrollbar-thumb {
        background: linear-gradient(90deg, #6366F1, #A855F7) !important;
        border-radius: 4px !important;
    }
}

/* =========================================
   REUSABLE COMPONENTS INFINITE MARQUEE (ALL SCREEN SIZES)
   ========================================= */
.elements-showcase-container {
    overflow: hidden;
    width: 100%;
    position: relative;
    padding: 10px 0;
}

.elements-marquee-row {
    display: flex;
    gap: 20px;
    width: max-content;
    margin-bottom: 20px;
    will-change: transform;
}

.elements-marquee-row--1 {
    animation: marqueeScrollLeft 35s linear infinite;
}

.elements-marquee-row--2 {
    animation: marqueeScrollRight 40s linear infinite;
}

.elements-marquee-row:hover,
.elements-marquee-row:active,
.elements-marquee-row *:hover,
.elements-marquee-row *:active,
.elements-showcase-container:hover .elements-marquee-row {
    animation-play-state: paused !important;
}

.elements-marquee-row .element-card {
    flex: 0 0 240px;
    min-width: 240px;
    box-sizing: border-box;
    cursor: pointer;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.elements-marquee-row .element-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-accent, #6366F1);
}

@keyframes marqueeScrollLeft {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

@keyframes marqueeScrollRight {
    0% { transform: translateX(-50%); }
    100% { transform: translateX(0); }
}

/* =========================================
   READ MORE CTA TOGGLE & SWIPE BADGE UTILITIES
   ========================================= */
.swipe-hint-badge {
    display: none;
}

@media (max-width: 767px) {
    .swipe-hint-badge {
        display: inline-flex !important;
        align-items: center;
        gap: 6px;
        font-size: 11px;
        font-weight: 600;
        letter-spacing: 0.05em;
        color: var(--color-accent, #6366F1);
        background: rgba(99, 102, 241, 0.1);
        border: 1px solid rgba(99, 102, 241, 0.25);
        padding: 4px 12px;
        border-radius: 20px;
        margin-bottom: 12px;
        text-transform: uppercase;
    }

    /* Default collapsed state for mobile content */
    .mobile-read-more:not(.expanded):not(.is-expanded) .read-more-content,
    .learning-card:not(.expanded):not(.is-expanded) .learning-description:not(.is-visible) {
        display: none !important;
        max-height: 0 !important;
        opacity: 0 !important;
        visibility: hidden !important;
        overflow: hidden !important;
    }

    /* Expanded state for mobile content */
    .mobile-read-more.expanded .read-more-content,
    .mobile-read-more.is-expanded .read-more-content,
    .mobile-read-more .read-more-content.is-visible,
    .mobile-read-more .read-more-content.expanded,
    .learning-card.expanded .learning-description,
    .learning-card .learning-description.is-visible {
        display: block !important;
        max-height: 5000px !important;
        opacity: 1 !important;
        visibility: visible !important;
        margin-top: 12px !important;
        overflow: visible !important;
        transition: opacity 0.3s ease, margin-top 0.3s ease;
    }

    .mobile-read-more .read-more-btn,
    .learning-read-more {
        display: inline-flex !important;
        align-items: center;
        justify-content: center;
        margin-top: 12px;
        background: transparent;
        border: 1px solid var(--color-accent, #6366F1);
        color: var(--color-accent, #6366F1);
        padding: 8px 18px;
        border-radius: 20px;
        font-size: 13px;
        font-weight: 600;
        cursor: pointer;
        transition: all 0.2s ease;
    }

    .mobile-read-more .read-more-btn:hover,
    .learning-read-more:hover {
        background: var(--color-accent, #6366F1);
        color: #ffffff;
    }
}

/* Desktop / Large Screens: Always expand content, hide toggle buttons */
@media (min-width: 768px) {
    .mobile-read-more .read-more-content,
    .learning-card .learning-description {
        display: block !important;
        max-height: none !important;
        opacity: 1 !important;
        visibility: visible !important;
        margin-top: var(--spacing-sm, 12px) !important;
    }
    .mobile-read-more .read-more-btn,
    .learning-read-more {
        display: none !important;
    }
}