/* =========================================================
   THE CREATIVE STUDIO — PORTFOLIO PAGE
   Load after style.css:
   <link rel="stylesheet" href="style.css">
   <link rel="stylesheet" href="portfolio.css">
   ========================================================= */

:root {
    --portfolio-primary: var(--primary, #1F73E8);
    --portfolio-primary-light: var(--primary-light, #4EA6FF);
    --portfolio-accent: var(--accent, #7BC4FF);
    --portfolio-dark: var(--dark, #172033);
    --portfolio-gray: var(--gray, #667085);
    --portfolio-page: #f6faff;
    --portfolio-soft: #f8fbff;
    --portfolio-border: #dbe9ff;
    --portfolio-white: #fff;
    --portfolio-shadow: 0 16px 40px rgba(15, 38, 75, .09);
    --portfolio-shadow-hover: 0 24px 56px rgba(15, 38, 75, .14);
    --portfolio-radius: 18px;
    --portfolio-radius-lg: 23px;
    --portfolio-transition: .22s ease;
}

/* ---------- General page spacing ---------- */

#portfolio-work,
#portfolio-process,
#final-cta {
    scroll-margin-top: 110px;
}

#portfolio-work,
#portfolio-process {
    padding: 92px 0;
}

#portfolio-work {
    background: var(--portfolio-white);
}

#portfolio-process {
    background: var(--portfolio-page);
}

#portfolio-work .section-title,
#portfolio-process .section-title {
    max-width: 860px;
    margin: 0 auto 42px;
    text-align: center;
}

#portfolio-work .section-title h2,
#portfolio-process .section-title h2 {
    margin-bottom: 12px;
    color: var(--portfolio-primary);
}

/* ---------- Hero ---------- */

#portfolio-hero {
    position: relative;
    overflow: hidden;
    padding: 102px 0 96px;
    text-align: center;
    color: #fff;
    background:
        radial-gradient(circle at 86% 18%, rgba(255,255,255,.22), transparent 27%),
        radial-gradient(circle at 12% 88%, rgba(123,196,255,.30), transparent 32%),
        linear-gradient(135deg, var(--portfolio-primary), var(--portfolio-primary-light));
}

#portfolio-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        linear-gradient(120deg, transparent 0 62%, rgba(255,255,255,.07) 62% 64%, transparent 64%),
        linear-gradient(30deg, transparent 0 72%, rgba(255,255,255,.05) 72% 74%, transparent 74%);
}

#portfolio-hero .container {
    position: relative;
    z-index: 1;
}

#portfolio-hero h1 {
    max-width: 980px;
    margin: 0 auto 18px;
    color: #fff;
    font-size: clamp(2.5rem, 5.5vw, 4.45rem);
    line-height: 1.08;
}

#portfolio-hero p {
    max-width: 880px;
    margin: 0 auto;
    color: rgba(255,255,255,.95);
    font-size: clamp(1rem, 1.7vw, 1.16rem);
    line-height: 1.75;
}

#portfolio-hero .hero-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 13px;
    margin-top: 31px;
}

#portfolio-hero .btn {
    min-width: 180px;
}

#portfolio-hero .btn.secondary {
    border-color: rgba(255,255,255,.8);
    background: rgba(255,255,255,.10);
    color: #fff;
    backdrop-filter: blur(6px);
}

#portfolio-hero .btn.secondary:hover,
#portfolio-hero .btn.secondary:focus-visible {
    border-color: #fff;
    background: #fff;
    color: var(--portfolio-primary);
}

/* ---------- Filter controls ---------- */

.portfolio-filter {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 11px;
    margin: 30px 0 38px;
}

.filter-btn {
    min-height: 44px;
    padding: 10px 18px;
    border: 1px solid #cfe0f8;
    border-radius: 999px;
    background: #fff;
    color: #344054;
    cursor: pointer;
    font: inherit;
    font-weight: 750;
    transition:
        transform var(--portfolio-transition),
        border-color var(--portfolio-transition),
        background var(--portfolio-transition),
        color var(--portfolio-transition),
        box-shadow var(--portfolio-transition);
}

.filter-btn:hover,
.filter-btn:focus-visible {
    transform: translateY(-1px);
    border-color: var(--portfolio-primary);
    color: var(--portfolio-primary);
    outline: none;
    box-shadow: 0 0 0 4px rgba(31,115,232,.11);
}

.filter-btn.active,
.filter-btn[aria-pressed="true"] {
    border-color: var(--portfolio-primary);
    background: var(--portfolio-primary);
    color: #fff;
    box-shadow: 0 10px 24px rgba(31,115,232,.18);
}

/* ---------- Portfolio gallery ---------- */

.portfolio-gallery {
    display: grid !important;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 25px;
    column-count: initial !important;
}

.portfolio-item {
    min-width: 0;
    overflow: hidden;
    border: 1px solid var(--portfolio-border);
    border-radius: var(--portfolio-radius);
    background: var(--portfolio-white);
    box-shadow: var(--portfolio-shadow);
    break-inside: avoid;
    transition:
        transform var(--portfolio-transition),
        border-color var(--portfolio-transition),
        box-shadow var(--portfolio-transition);
}

.portfolio-item:hover {
    transform: translateY(-5px);
    border-color: #b6d2f6;
    box-shadow: var(--portfolio-shadow-hover);
}

.portfolio-item[hidden] {
    display: none !important;
}

.portfolio-item button {
    display: flex;
    width: 100%;
    height: 100%;
    padding: 0;
    border: 0;
    background: transparent;
    color: inherit;
    cursor: pointer;
    flex-direction: column;
    text-align: left;
}

.portfolio-item button:focus-visible {
    outline: 0;
    box-shadow: inset 0 0 0 4px rgba(31,115,232,.18);
}

.portfolio-item img {
    display: block;
    width: 100%;
    min-height: 0;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    background:
        linear-gradient(135deg, #eef6ff, #dcecff);
    transition: transform .35s ease;
}

.portfolio-item:hover img {
    transform: scale(1.025);
}

.portfolio-card-copy {
    display: flex;
    flex: 1;
    flex-direction: column;
    padding: 24px;
}

.portfolio-card-copy h3 {
    margin-bottom: 8px;
    color: var(--portfolio-primary);
    font-size: 1.25rem;
}

.portfolio-card-copy p {
    margin-bottom: 0;
    color: #536071;
    line-height: 1.65;
}

.portfolio-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: auto;
    padding-top: 17px;
}

.portfolio-meta span {
    padding: 6px 12px;
    border-radius: 999px;
    background: #eef6ff;
    color: var(--portfolio-primary);
    font-size: .82rem;
    font-weight: 750;
}

/* ---------- Empty state ---------- */

.portfolio-empty {
    display: none;
    max-width: 780px;
    margin: 32px auto 0;
    padding: 42px 28px;
    border: 1px solid var(--portfolio-border);
    border-radius: var(--portfolio-radius);
    background: #eef7ff;
    text-align: center;
}

.portfolio-empty.show {
    display: block;
}

.portfolio-empty h3 {
    margin-bottom: 8px;
    color: var(--portfolio-primary);
}

.portfolio-empty p {
    margin: 0;
}

/* ---------- Process section ---------- */

.portfolio-process-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
}

.portfolio-process-card {
    position: relative;
    min-width: 0;
    padding: 30px;
    border: 1px solid var(--portfolio-border);
    border-radius: var(--portfolio-radius);
    background: #fff;
    box-shadow: var(--portfolio-shadow);
    transition:
        transform var(--portfolio-transition),
        border-color var(--portfolio-transition),
        box-shadow var(--portfolio-transition);
}

.portfolio-process-card:hover {
    transform: translateY(-4px);
    border-color: #b7d2f4;
    box-shadow: var(--portfolio-shadow-hover);
}

.portfolio-process-card span {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    margin-bottom: 18px;
    border-radius: 50%;
    background:
        linear-gradient(135deg, var(--portfolio-primary), var(--portfolio-primary-light));
    color: #fff;
    box-shadow: 0 10px 24px rgba(31,115,232,.18);
    font-family: "Poppins", sans-serif;
    font-weight: 800;
}

.portfolio-process-card h3 {
    margin-bottom: 9px;
    color: var(--portfolio-primary);
}

.portfolio-process-card p {
    margin: 0;
    color: #536071;
    line-height: 1.65;
}

/* ---------- Modal ---------- */

.modal.hidden {
    display: none !important;
}

#portfolioModal:not(.hidden) {
    position: fixed;
    inset: 0;
    z-index: 3000;
    display: grid;
    place-items: center;
    overflow-y: auto;
    padding: 24px;
    background: rgba(9,18,32,.80);
    backdrop-filter: blur(7px);
}

#portfolioModal .modal-content {
    position: relative;
    width: min(920px, 100%);
    max-height: calc(100vh - 48px);
    overflow-y: auto;
    padding: 28px;
    border: 1px solid rgba(255,255,255,.45);
    border-radius: 22px;
    background: #fff;
    box-shadow: 0 32px 90px rgba(0,0,0,.34);
    animation: portfolioModalIn .22s ease;
}

@keyframes portfolioModalIn {
    from {
        opacity: 0;
        transform: translateY(12px) scale(.985);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

#portfolioModal .close-modal {
    position: absolute;
    top: 14px;
    right: 14px;
    z-index: 2;
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    padding: 0;
    border: 0;
    border-radius: 50%;
    background: #fff;
    color: #172033;
    box-shadow: 0 8px 22px rgba(0,0,0,.16);
    cursor: pointer;
    font-size: 1.5rem;
    line-height: 1;
    transition:
        transform var(--portfolio-transition),
        background var(--portfolio-transition),
        color var(--portfolio-transition);
}

#portfolioModal .close-modal:hover,
#portfolioModal .close-modal:focus-visible {
    transform: rotate(5deg) scale(1.04);
    background: var(--portfolio-primary);
    color: #fff;
    outline: none;
}

.portfolio-modal-image {
    display: block;
    width: 100%;
    max-height: 62vh;
    border-radius: 16px;
    object-fit: contain;
    background: #eef6ff;
}

.portfolio-modal-copy {
    padding-top: 25px;
}

.portfolio-modal-copy .badge {
    display: inline-flex;
    align-items: center;
    min-height: 31px;
    margin-bottom: 11px;
    padding: 5px 11px;
    border-radius: 999px;
    background: #eef6ff;
    color: var(--portfolio-primary);
    font-size: .78rem;
    font-weight: 800;
}

.portfolio-modal-copy h2 {
    margin-bottom: 11px;
    color: var(--portfolio-primary);
}

.portfolio-modal-copy p {
    color: #536071;
    line-height: 1.72;
}

/* ---------- Final CTA ---------- */

#final-cta {
    position: relative;
    overflow: hidden;
    padding: 88px 0;
    color: #fff;
    background:
        radial-gradient(circle at 84% 17%, rgba(255,255,255,.19), transparent 25%),
        linear-gradient(135deg, var(--portfolio-primary), var(--portfolio-primary-light));
    text-align: center;
}

#final-cta .container {
    position: relative;
    z-index: 1;
}

#final-cta .cta-logo {
    display: block;
    width: min(150px, 42vw);
    max-height: 95px;
    margin: 0 auto 18px;
    object-fit: contain;
}

#final-cta h2 {
    margin-bottom: 13px;
    color: #fff;
}

#final-cta p {
    max-width: 760px;
    margin: 0 auto;
    color: rgba(255,255,255,.93);
}

#final-cta .cta-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-top: 27px;
}

#final-cta .btn.secondary {
    border-color: rgba(255,255,255,.8);
    background: rgba(255,255,255,.10);
    color: #fff;
}

#final-cta .btn.secondary:hover,
#final-cta .btn.secondary:focus-visible {
    background: #fff;
    color: var(--portfolio-primary);
}

/* ---------- Header and mobile navigation ---------- */

#mobileMenuBtn,
#mobileMenuButton {
    display: none;
}

.nav-links .button-link {
    display: inline-block;
    padding: 11px 20px;
    border-radius: 999px;
    background: var(--portfolio-primary);
    color: #fff;
    font-weight: 700;
}

.nav-links .button-link:hover,
.nav-links .button-link:focus-visible {
    background: #1764cc;
    color: #fff;
}

/* ---------- Back to top ---------- */

#backToTop {
    position: fixed;
    right: 22px;
    bottom: 22px;
    z-index: 900;
    display: grid;
    place-items: center;
    width: 46px;
    height: 46px;
    border: 0;
    border-radius: 50%;
    background: var(--portfolio-primary);
    color: #fff;
    box-shadow: 0 12px 28px rgba(0,0,0,.18);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: var(--portfolio-transition);
}

#backToTop.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

#backToTop:hover,
#backToTop:focus-visible {
    background: #1764cc;
    outline: none;
    transform: translateY(-2px);
}

/* ---------- Footer matching index.html ---------- */

#site-footer,
#site-footer .container,
#site-footer .footer-grid,
#site-footer .footer-grid.footer-grid-five,
#site-footer .footer-bottom {
    background: #000 !important;
}

#site-footer {
    margin-top: 0;
    padding: 70px 0 25px;
    color: #fff;
}

#site-footer h3,
#site-footer p,
#site-footer a {
    color: #fff !important;
}

#site-footer p,
#site-footer a {
    opacity: .92;
}

#site-footer a:hover,
#site-footer a:focus-visible {
    color: var(--portfolio-accent) !important;
    opacity: 1;
}

#site-footer .footer-grid.footer-grid-five {
    display: grid;
    grid-template-columns: 1.35fr repeat(4, minmax(0, 1fr));
    gap: 32px;
    align-items: start;
}

#site-footer .footer-column {
    min-width: 0;
}

#site-footer .footer-logo {
    width: 150px;
    max-height: 90px;
    margin-bottom: 18px;
    object-fit: contain;
}

#site-footer .footer-column ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

#site-footer .footer-column li + li {
    margin-top: 8px;
}

#site-footer .social-icons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 14px;
    margin-top: 15px;
}

#site-footer hr {
    margin: 42px 0 24px;
    border: 0;
    border-top: 1px solid rgba(255,255,255,.18);
}

#site-footer .footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 0;
    border: 0 !important;
    box-shadow: none !important;
}

#site-footer .footer-bottom p {
    margin: 0;
}

#site-footer .footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 10px 18px;
}

/* ---------- Responsive ---------- */

@media (max-width: 1180px) {
    .portfolio-gallery {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .portfolio-process-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    #site-footer .footer-grid.footer-grid-five {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 900px) {
    #mobileMenuBtn,
    #mobileMenuButton {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 46px;
        height: 46px;
        padding: 0;
        border: 1px solid #d7e4f7;
        border-radius: 12px;
        background: #fff;
        color: var(--portfolio-primary);
        cursor: pointer;
        font-size: 1.55rem;
        line-height: 1;
    }

    .navbar {
        position: relative;
    }

    .nav-links.active {
        position: absolute;
        top: calc(100% + 1px);
        right: 0;
        left: 0;
        z-index: 1100;
        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        padding: 14px;
        border: 1px solid var(--portfolio-border);
        border-radius: 0 0 16px 16px;
        background: rgba(255,255,255,.99);
        box-shadow: 0 18px 38px rgba(0,0,0,.12);
    }

    .nav-links.active li,
    .nav-links.active a {
        width: 100%;
    }

    .nav-links.active a {
        display: block;
        padding: 11px 13px;
        border-radius: 10px;
    }
}

@media (max-width: 760px) {
    #portfolio-hero {
        padding: 75px 0 72px;
    }

    #portfolio-work,
    #portfolio-process {
        padding: 64px 0;
    }

    .portfolio-gallery,
    .portfolio-process-grid {
        grid-template-columns: 1fr;
    }

    .portfolio-filter {
        align-items: stretch;
        flex-direction: column;
    }

    .filter-btn {
        width: 100%;
    }

    #portfolio-hero .hero-buttons,
    #final-cta .cta-buttons {
        align-items: stretch;
        flex-direction: column;
    }

    #portfolio-hero .btn,
    #final-cta .btn {
        width: 100%;
    }

    #portfolioModal {
        padding: 12px !important;
    }

    #portfolioModal .modal-content {
        max-height: calc(100vh - 24px);
        padding: 20px;
    }

    #site-footer {
        padding: 54px 0 22px;
    }

    #site-footer .footer-grid.footer-grid-five {
        grid-template-columns: 1fr;
        gap: 26px;
    }

    #site-footer .footer-bottom {
        align-items: flex-start;
        flex-direction: column;
    }

    #site-footer .footer-links {
        justify-content: flex-start;
    }
}

@media (max-width: 520px) {
    .portfolio-card-copy,
    .portfolio-process-card {
        padding: 20px;
    }

    .portfolio-modal-copy {
        padding-top: 20px;
    }

    #portfolioModal .close-modal {
        top: 10px;
        right: 10px;
        width: 39px;
        height: 39px;
    }
}

/* ---------- Accessibility and print ---------- */

@media (prefers-reduced-motion: reduce) {
    .portfolio-item,
    .portfolio-item img,
    .portfolio-process-card,
    .filter-btn,
    #backToTop,
    #portfolioModal .modal-content,
    #portfolioModal .close-modal {
        animation: none !important;
        transition: none !important;
    }
}

@media print {
    .site-header,
    #site-footer,
    #portfolio-hero .hero-buttons,
    #portfolio-work .portfolio-filter,
    #portfolioModal,
    #final-cta,
    #backToTop {
        display: none !important;
    }

    #portfolio-work,
    #portfolio-process {
        padding: 24px 0;
        background: #fff;
    }

    .portfolio-gallery,
    .portfolio-process-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .portfolio-item,
    .portfolio-process-card {
        break-inside: avoid;
        box-shadow: none;
    }
}