/* ==========================================================================
   Mobile Portfolio Page Styles - Completely Independent
   ========================================================================== */

/* ---------------------------------- */
/* 1. Global Mobile Variables & Reset */
/* ---------------------------------- */
:root {
    --m-portfolio-color-background: #0a0a0a;
    --m-portfolio-color-background-secondary: #111111;
    --m-portfolio-color-text-primary: #ffffff;
    --m-portfolio-color-text-secondary: #a0aec0;
    --m-portfolio-color-border: #2d3748;
    --m-portfolio-font-main: 'Pretendard', sans-serif;
    --m-portfolio-transition-fast: all 0.3s ease;
}

/* Global reset for mobile portfolio pages */
.m-portfolio-page * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* Ensure no horizontal scroll on mobile */
html.m-portfolio-page,
body.m-portfolio-page {
    width: 100%;
    overflow-x: hidden;
}

body.m-portfolio-page {
    font-family: var(--m-portfolio-font-main);
    background-color: var(--m-portfolio-color-background);
    color: var(--m-portfolio-color-text-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

body.m-portfolio-nav-is-open {
    overflow: hidden;
}

.m-portfolio-page a {
    color: inherit;
    text-decoration: none;
}

.m-portfolio-page img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ---------------------------------- */
/* 2. Mobile Container                */
/* ---------------------------------- */
.m-portfolio-container {
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

/* ---------------------------------- */
/* 3. Animations & Effects            */
/* ---------------------------------- */
.m-portfolio-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.25, 1, 0.5, 1), transform 0.8s cubic-bezier(0.25, 1, 0.5, 1);
}

.m-portfolio-reveal.m-portfolio-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ---------------------------------- */
/* 4. Header & Navigation             */
/* ---------------------------------- */
.m-portfolio-page-header {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1.5rem;
    z-index: 1000;
}

.m-portfolio-page-header__container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.m-portfolio-page-header__logo {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    z-index: 1001;
}

.m-portfolio-nav-toggle {
    background: none;
    border: none;
    padding: 0.5rem;
    z-index: 1001;
    cursor: pointer;
}

.m-portfolio-nav-toggle__icon {
    width: 28px;
    height: 28px;
    color: var(--m-portfolio-color-text-primary);
}

.m-portfolio-mobile-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    height: 100vh;
    background-color: var(--m-portfolio-color-background);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1);
}

.m-portfolio-mobile-nav.m-portfolio-is-open {
    transform: translateX(0);
}

.m-portfolio-mobile-nav__close-button {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
}

.m-portfolio-mobile-nav__links {
    list-style: none;
    text-align: center;
    padding: 0;
}

.m-portfolio-mobile-nav__item {
    margin: 2rem 0;
}

.m-portfolio-mobile-nav__link {
    font-size: 2rem;
    font-weight: 500;
    color: var(--m-portfolio-color-text-secondary);
    transition: color 0.3s;
}

.m-portfolio-mobile-nav__link.m-portfolio-is-active {
    color: var(--m-portfolio-color-text-primary);
    font-weight: 600;
}

.m-portfolio-mobile-nav__link:hover {
    color: var(--m-portfolio-color-text-primary);
}

/* ---------------------------------- */
/* 5. Main Content                    */
/* ---------------------------------- */
.m-portfolio-main-content {
    padding-top: 100px;
}

/* ---------------------------------- */
/* 6. Section Headers                 */
/* ---------------------------------- */
.m-portfolio-section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.m-portfolio-section-header__title {
    font-size: 1.875rem;
    font-weight: 600;
    margin: 0;
}

.m-portfolio-section-header__description {
    margin-top: 1rem;
    color: var(--m-portfolio-color-text-secondary);
    max-width: 50ch;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
}

/* ---------------------------------- */
/* 7. Intro Section                   */
/* ---------------------------------- */
.m-portfolio-intro {
    text-align: center;
    padding: 2rem 0 3rem;
}

.m-portfolio-intro__title {
    font-size: 2.25rem;
    font-weight: 600;
    margin: 0;
}

.m-portfolio-intro__description {
    margin-top: 1rem;
    color: var(--m-portfolio-color-text-secondary);
    font-size: 1rem;
    max-width: 50ch;
    margin: 1rem auto 0;
}

/* ---------------------------------- */
/* 8. Filter Navigation               */
/* ---------------------------------- */
.m-portfolio-filter {
    text-align: center;
    padding-bottom: 3rem;
}

.m-portfolio-filter__nav {
    display: inline-flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem;
    border: 1px solid var(--m-portfolio-color-border);
    border-radius: 99px;
}

.m-portfolio-filter__button {
    background: none;
    border: none;
    color: var(--m-portfolio-color-text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    font-family: inherit;
    font-size: 0.875rem;
    transition: color 0.4s, background-color 0.4s;
    cursor: pointer;
}

.m-portfolio-filter__button.m-portfolio-is-active {
    color: var(--m-portfolio-color-text-primary);
    font-weight: 600;
    background-color: rgba(255,255,255,0.1);
}

/* ---------------------------------- */
/* 9. Gallery Mobile                  */
/* ---------------------------------- */
.m-portfolio-gallery-mobile {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.m-portfolio-gallery-mobile__item {
    position: relative;
    overflow: hidden;
    border-radius: 0.5rem;
    background-color: #1a202c;
    aspect-ratio: 4 / 3;
    display: none; /* Hidden by default for filtering */
}

.m-portfolio-gallery-mobile__item.m-portfolio-is-visible {
    display: block; /* Shown by filter JS */
}

.m-portfolio-gallery-mobile__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.m-portfolio-gallery-mobile__overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1.5rem;
    background: linear-gradient(to top, rgba(0,0,0,0.7), transparent 70%);
    color: white;
}

.m-portfolio-gallery-mobile__title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
}

.m-portfolio-gallery-mobile__category {
    margin-top: 0.25rem;
    color: var(--m-portfolio-color-text-secondary);
    font-size: 0.875rem;
}

/* ---------------------------------- */
/* 10. Detail Section                 */
/* ---------------------------------- */
.m-portfolio-detail {
    padding: 5rem 0;
}

.m-portfolio-detail__title {
    font-size: 1.75rem;
    font-weight: 600;
}

.m-portfolio-detail__description {
    margin: 1rem auto 3rem;
    color: var(--m-portfolio-color-text-secondary);
    max-width: 50ch;
}

.m-portfolio-detail__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.m-portfolio-detail__item {
    position: relative;
    overflow: hidden;
    border-radius: 0.5rem;
    aspect-ratio: 1 / 1;
    background-color: #1a202c;
}

.m-portfolio-detail__item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ---------------------------------- */
/* 11. Before & After Section         */
/* ---------------------------------- */
.m-portfolio-ba-section {
    padding: 5rem 0;
    background-color: var(--m-portfolio-color-background-secondary);
}

.m-portfolio-ba-container {
    position: relative;
    width: 100%;
    max-width: 1000px;
    margin: 0 auto;
    aspect-ratio: 16 / 9;
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0,0,0,0.3);
}

.m-portfolio-ba-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    pointer-events: none;
}

.m-portfolio-ba-image--before {
    z-index: 1;
}

.m-portfolio-ba-image--after {
    z-index: 2;
    clip-path: polygon(0 0, 50% 0, 50% 100%, 0 100%);
}

.m-portfolio-ba-slider {
    position: absolute;
    z-index: 3;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.2);
    cursor: ew-resize;
}

.m-portfolio-ba-slider::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1px;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.8);
}

.m-portfolio-ba-handle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 54px;
    border-radius: 99px;
    background-color: var(--m-portfolio-color-text-primary);
    border: 2px solid var(--m-portfolio-color-background-secondary);
    box-shadow: 0 0 15px rgba(0,0,0,0.5);
}

/* ---------------------------------- */
/* 12. Anatomy Section                */
/* ---------------------------------- */
.m-portfolio-anatomy-section {
    padding: 5rem 0;
}

.m-portfolio-anatomy-container {
    position: relative;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

.m-portfolio-anatomy-image {
    border-radius: 0.5rem;
    width: 100%;
}

.m-portfolio-anatomy-hotspot {
    position: absolute;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: transform 0.3s, background-color 0.3s;
    cursor: pointer;
}

.m-portfolio-anatomy-hotspot::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    background-color: var(--m-portfolio-color-text-primary);
    border-radius: 50%;
    transition: transform 0.3s;
}

.m-portfolio-anatomy-hotspot.m-portfolio-is-active {
    transform: scale(1.2);
    background-color: rgba(255, 255, 255, 0.4);
}

.m-portfolio-anatomy-hotspot.m-portfolio-is-active::after {
    transform: translate(-50%, -50%) scale(1.5);
}

.m-portfolio-anatomy-hotspot .m-portfolio-anatomy-tooltip {
    position: absolute;
    bottom: 140%;
    left: 50%;
    transform: translateX(-50%);
    background-color: #111;
    color: white;
    padding: 0.75rem 1.25rem;
    border-radius: 0.375rem;
    width: 250px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s, bottom 0.3s;
    pointer-events: none;
}

.m-portfolio-anatomy-hotspot.m-portfolio-is-active .m-portfolio-anatomy-tooltip {
    opacity: 1;
    visibility: visible;
    bottom: 150%;
}

.m-portfolio-anatomy-tooltip__title {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.m-portfolio-anatomy-tooltip__text {
    font-size: 0.875rem;
    color: var(--m-portfolio-color-text-secondary);
    line-height: 1.5;
}

.m-portfolio-hotspot-1 {
    top: 35%;
    left: 25%;
}

.m-portfolio-hotspot-2 {
    top: 60%;
    left: 55%;
}

.m-portfolio-hotspot-3 {
    top: 75%;
    left: 15%;
}

/* ---------------------------------- */
/* 13. Footer                         */
/* ---------------------------------- */
.m-portfolio-page-footer {
    padding: 5rem 0 2rem;
}

.m-portfolio-page-footer__container {
    text-align: center;
}

.m-portfolio-page-footer__email-link {
    display: inline-block;
    margin-top: 2rem;
    font-size: 1.25rem;
    border-bottom: 1px solid var(--m-portfolio-color-text-secondary);
    color: var(--m-portfolio-color-text-primary);
    text-decoration: none;
    transition: all 0.3s;
}

.m-portfolio-page-footer__email-link:hover {
    border-color: var(--m-portfolio-color-text-primary);
}

.m-portfolio-page-footer__bottom {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid #1a202c;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
}

.m-portfolio-page-footer__socials {
    display: flex;
    gap: 1rem;
    color: var(--m-portfolio-color-text-secondary);
}

.m-portfolio-page-footer__socials a {
    transition: color 0.3s;
}

.m-portfolio-page-footer__socials a:hover {
    color: var(--m-portfolio-color-text-primary);
}