/* =========================================================
   PMAI LAB — RESOURCES PAGE
   resources.css
   Python, Mathematics & Artificial Intelligence Lab
   Version 2.0
========================================================= */


/* =========================================================
   GLOBAL RESOURCE CONTAINER
========================================================= */

.resources-container {

    width: min(1200px, calc(100% - 40px));

    margin: 0 auto;

}


/* =========================================================
   RESOURCE HERO
========================================================= */

.resources-hero {

    position: relative;

    padding: 120px 20px 95px;

    background: #ffffff;

    border-bottom: 1px solid #e5e7eb;

    overflow: hidden;

}


/* Background grid */

.resources-hero::before {

    content: "";

    position: absolute;

    inset: 0;

    background-image:

        linear-gradient(
            rgba(15, 23, 42, 0.035) 1px,
            transparent 1px
        ),

        linear-gradient(
            90deg,
            rgba(15, 23, 42, 0.035) 1px,
            transparent 1px
        );

    background-size: 40px 40px;

    pointer-events: none;

}


/* Decorative circle */

.resources-hero::after {

    content: "";

    position: absolute;

    width: 450px;

    height: 450px;

    right: -200px;

    top: -180px;

    border: 1px solid rgba(15, 23, 42, 0.07);

    border-radius: 50%;

    pointer-events: none;

}


/* =========================================================
   HERO CONTAINER
========================================================= */

.resources-hero-container {

    position: relative;

    z-index: 2;

    max-width: 900px;

    margin: 0 auto;

    text-align: center;

}


/* =========================================================
   HERO LABEL
========================================================= */

.resources-label {

    display: inline-block;

    margin-bottom: 20px;

    font-size: 0.78rem;

    font-weight: 800;

    letter-spacing: 0.16em;

    text-transform: uppercase;

    color: #475569;

}


/* =========================================================
   HERO TITLE
========================================================= */

.resources-hero h1 {

    margin: 0;

    font-size: clamp(2.8rem, 6vw, 5rem);

    font-weight: 800;

    line-height: 1.05;

    letter-spacing: -0.045em;

    color: #0f172a;

}


/* =========================================================
   HERO DESCRIPTION
========================================================= */

.resources-hero-description {

    max-width: 760px;

    margin: 28px auto 0;

    font-size: 1.08rem;

    line-height: 1.8;

    color: #64748b;

}


/* =========================================================
   RESOURCE SEARCH
========================================================= */

.resource-search {

    display: flex;

    max-width: 680px;

    margin: 38px auto 0;

    padding: 6px;

    background: #ffffff;

    border: 1px solid #dbe2ea;

    border-radius: 14px;

    box-shadow:
        0 12px 35px rgba(15, 23, 42, 0.07);

}


/* Search input */

.resource-search input {

    flex: 1;

    min-width: 0;

    padding: 14px 17px;

    border: none;

    outline: none;

    background: transparent;

    font-family: inherit;

    font-size: 0.95rem;

    color: #0f172a;

}


.resource-search input::placeholder {

    color: #94a3b8;

}


/* Search button */

.resource-search button {

    padding: 13px 23px;

    border: none;

    border-radius: 9px;

    background: #0f172a;

    color: #ffffff;

    font-family: inherit;

    font-size: 0.88rem;

    font-weight: 700;

    cursor: pointer;

    transition:
        transform 0.25s ease,
        background 0.25s ease;

}


.resource-search button:hover {

    background: #1e293b;

    transform: translateY(-1px);

}


/* =========================================================
   RESOURCE INTRO
========================================================= */

.resources-intro {

    padding: 85px 0 35px;

}


.resources-intro-grid {

    display: grid;

    grid-template-columns:
        minmax(0, 1.5fr)
        minmax(260px, 0.7fr);

    gap: 60px;

    align-items: center;

}


/* =========================================================
   SECTION LABEL
========================================================= */

.resources-section-label {

    margin: 0 0 11px;

    font-size: 0.75rem;

    font-weight: 800;

    letter-spacing: 0.14em;

    text-transform: uppercase;

    color: #64748b;

}


/* =========================================================
   INTRO HEADING
========================================================= */

.resources-intro h2 {

    margin: 0 0 20px;

    font-size: 2.25rem;

    line-height: 1.2;

    letter-spacing: -0.035em;

    color: #0f172a;

}


.resources-intro p {

    margin: 0;

    max-width: 760px;

    font-size: 1rem;

    line-height: 1.8;

    color: #64748b;

}


/* =========================================================
   RESOURCE STAT CARD
========================================================= */

.resources-stat-card {

    padding: 35px 25px;

    background: #f8fafc;

    border: 1px solid #e2e8f0;

    border-radius: 20px;

    text-align: center;

    transition:
        transform 0.3s ease,
        box-shadow 0.3s ease,
        border-color 0.3s ease;

}


.resources-stat-card:hover {

    transform: translateY(-5px);

    border-color: #cbd5e1;

    box-shadow:
        0 18px 45px rgba(15, 23, 42, 0.08);

}


.resources-stat-number {

    display: block;

    margin-bottom: 8px;

    font-size: 3rem;

    font-weight: 800;

    line-height: 1;

    letter-spacing: -0.05em;

    color: #0f172a;

}


.resources-stat-title {

    font-size: 0.78rem;

    font-weight: 800;

    letter-spacing: 0.12em;

    text-transform: uppercase;

    color: #64748b;

}


/* =========================================================
   RESOURCE SECTION
========================================================= */

.resources-section {

    padding: 75px 0;

}


/* =========================================================
   SECTION HEADER
========================================================= */

.resources-section-header {

    margin-bottom: 38px;

}


.resources-section-header h2 {

    margin: 0;

    font-size: 2.2rem;

    line-height: 1.2;

    letter-spacing: -0.035em;

    color: #0f172a;

}


.resources-section-header > p:last-child {

    max-width: 720px;

    margin: 16px 0 0;

    font-size: 1rem;

    line-height: 1.75;

    color: #64748b;

}


/* =========================================================
   RESOURCE GRID
========================================================= */

.resources-grid {

    display: grid;

    grid-template-columns:
        repeat(3, minmax(0, 1fr));

    gap: 24px;

}


/* =========================================================
   RESOURCE CARD
========================================================= */

.resources-card {

    position: relative;

    display: flex;

    flex-direction: column;

    min-height: 300px;

    padding: 30px;

    background: #ffffff;

    border: 1px solid #e2e8f0;

    border-radius: 18px;

    overflow: hidden;

    transition:
        transform 0.3s ease,
        box-shadow 0.3s ease,
        border-color 0.3s ease;

}


.resources-card::before {

    content: "";

    position: absolute;

    top: 0;

    left: 0;

    width: 100%;

    height: 3px;

    background: #0f172a;

    transform: scaleX(0);

    transform-origin: left;

    transition: transform 0.3s ease;

}


.resources-card:hover {

    transform: translateY(-7px);

    border-color: #cbd5e1;

    box-shadow:
        0 20px 50px rgba(15, 23, 42, 0.09);

}


.resources-card:hover::before {

    transform: scaleX(1);

}


/* =========================================================
   RESOURCE ICON
========================================================= */

.resources-icon {

    display: flex;

    align-items: center;

    justify-content: center;

    width: 58px;

    height: 58px;

    margin-bottom: 22px;

    border-radius: 14px;

    background: #0f172a;

    color: #ffffff;

    font-size: 0.82rem;

    font-weight: 800;

    letter-spacing: 0.04em;

}


/* =========================================================
   RESOURCE CARD TITLE
========================================================= */

.resources-card h3 {

    margin: 0 0 12px;

    font-size: 1.25rem;

    line-height: 1.35;

    color: #0f172a;

}


/* =========================================================
   RESOURCE CARD TEXT
========================================================= */

.resources-card p {

    margin: 0;

    font-size: 0.94rem;

    line-height: 1.7;

    color: #64748b;

}


/* =========================================================
   RESOURCE CARD LINK
========================================================= */

.resources-card-link {

    display: inline-flex;

    align-items: center;

    gap: 8px;

    margin-top: auto;

    padding-top: 25px;

    font-size: 0.88rem;

    font-weight: 700;

    text-decoration: none;

    color: #0f172a;

    transition:
        gap 0.25s ease,
        color 0.25s ease;

}


.resources-card-link:hover {

    gap: 13px;

    color: #475569;

}


.resources-card-link span {

    transition: transform 0.25s ease;

}


/* =========================================================
   FEATURED RESOURCE
========================================================= */

.resources-featured {

    position: relative;

    display: grid;

    grid-template-columns:
        minmax(0, 1.2fr)
        minmax(300px, 0.8fr);

    gap: 45px;

    padding: 50px;

    background: #0f172a;

    border-radius: 24px;

    color: #ffffff;

    overflow: hidden;

}


.resources-featured::after {

    content: "";

    position: absolute;

    width: 380px;

    height: 380px;

    right: -170px;

    bottom: -210px;

    border: 1px solid rgba(255, 255, 255, 0.08);

    border-radius: 50%;

}


/* =========================================================
   FEATURED CONTENT
========================================================= */

.resources-featured-content {

    position: relative;

    z-index: 2;

}


.resources-featured-label {

    margin: 0 0 15px;

    font-size: 0.75rem;

    font-weight: 800;

    letter-spacing: 0.14em;

    text-transform: uppercase;

    color: #cbd5e1;

}


.resources-featured h2 {

    margin: 0 0 18px;

    font-size: 2.3rem;

    line-height: 1.2;

    letter-spacing: -0.035em;

    color: #ffffff;

}


.resources-featured p {

    margin: 0;

    max-width: 650px;

    line-height: 1.8;

    color: #cbd5e1;

}


/* =========================================================
   FEATURED LIST
========================================================= */

.resources-featured-list {

    position: relative;

    z-index: 2;

    display: flex;

    flex-direction: column;

    gap: 12px;

}


.resources-featured-item {

    display: flex;

    align-items: center;

    gap: 15px;

    padding: 16px 18px;

    background: rgba(255, 255, 255, 0.06);

    border: 1px solid rgba(255, 255, 255, 0.08);

    border-radius: 12px;

    color: #ffffff;

    text-decoration: none;

    transition:
        background 0.25s ease,
        transform 0.25s ease;

}


.resources-featured-item:hover {

    background: rgba(255, 255, 255, 0.11);

    transform: translateX(5px);

}


/* Featured icon */

.resources-featured-item-icon {

    display: flex;

    align-items: center;

    justify-content: center;

    width: 40px;

    height: 40px;

    flex-shrink: 0;

    border-radius: 9px;

    background: rgba(255, 255, 255, 0.1);

    font-size: 0.72rem;

    font-weight: 800;

}


.resources-featured-item-text {

    font-size: 0.9rem;

    font-weight: 600;

}


/* =========================================================
   RESOURCE LIBRARY
========================================================= */

.resource-library {

    padding: 35px 0 85px;

}


/* =========================================================
   LIBRARY SECTION
========================================================= */

.resource-library-section {

    display: grid;

    grid-template-columns: 100px minmax(0, 1fr);

    gap: 35px;

    padding: 42px 0;

    border-top: 1px solid #e2e8f0;

}


.resource-library-section:last-child {

    border-bottom: 1px solid #e2e8f0;

}


/* =========================================================
   LIBRARY NUMBER
========================================================= */

.library-number {

    font-size: 2rem;

    font-weight: 800;

    letter-spacing: -0.04em;

    color: #cbd5e1;

}


/* =========================================================
   LIBRARY CONTENT
========================================================= */

.library-content h3 {

    margin: 0 0 13px;

    font-size: 1.55rem;

    line-height: 1.3;

    letter-spacing: -0.025em;

    color: #0f172a;

}


.library-content > p:not(.resources-section-label) {

    max-width: 760px;

    margin: 0;

    font-size: 0.97rem;

    line-height: 1.75;

    color: #64748b;

}


/* =========================================================
   LIBRARY LINKS
========================================================= */

.library-links {

    display: flex;

    flex-wrap: wrap;

    gap: 10px;

    margin-top: 22px;

}


.library-links a {

    display: inline-flex;

    align-items: center;

    padding: 9px 14px;

    background: #f8fafc;

    border: 1px solid #e2e8f0;

    border-radius: 8px;

    font-size: 0.82rem;

    font-weight: 600;

    color: #334155;

    text-decoration: none;

    transition:
        background 0.25s ease,
        border-color 0.25s ease,
        transform 0.25s ease;

}


.library-links a:hover {

    background: #ffffff;

    border-color: #cbd5e1;

    transform: translateY(-2px);

}


/* =========================================================
   FACULTY CONTRIBUTION
========================================================= */

.resource-contribution {

    padding: 20px 0 30px;

}


.contribution-box {

    padding: 55px;

    background: #f8fafc;

    border: 1px solid #e2e8f0;

    border-radius: 24px;

    text-align: center;

}


.contribution-box h2 {

    margin: 0 0 16px;

    font-size: 2.1rem;

    line-height: 1.2;

    letter-spacing: -0.035em;

    color: #0f172a;

}


.contribution-box p:not(.resources-section-label) {

    max-width: 700px;

    margin: 0 auto 28px;

    line-height: 1.75;

    color: #64748b;

}


/* =========================================================
   ACTION BUTTON
========================================================= */

.resources-action-btn {

    display: inline-flex;

    align-items: center;

    justify-content: center;

    padding: 13px 24px;

    border: 1px solid #0f172a;

    border-radius: 10px;

    background: #0f172a;

    color: #ffffff;

    font-size: 0.88rem;

    font-weight: 700;

    text-decoration: none;

    transition:
        transform 0.25s ease,
        box-shadow 0.25s ease,
        background 0.25s ease;

}


.resources-action-btn:hover {

    transform: translateY(-2px);

    box-shadow:
        0 10px 25px rgba(15, 23, 42, 0.15);

}


/* =========================================================
   RESOURCES CTA
========================================================= */

.resources-cta {

    margin: 55px auto 90px;

    padding: 70px 40px;

    background: #ffffff;

    border: 1px solid #e2e8f0;

    border-radius: 24px;

    text-align: center;

}


.resources-cta h2 {

    margin: 0 0 16px;

    font-size: 2.25rem;

    line-height: 1.2;

    letter-spacing: -0.035em;

    color: #0f172a;

}


.resources-cta p:not(.resources-section-label) {

    max-width: 650px;

    margin: 0 auto 30px;

    line-height: 1.75;

    color: #64748b;

}


/* CTA buttons */

.cta-buttons {

    display: flex;

    justify-content: center;

    flex-wrap: wrap;

    gap: 12px;

}


.resources-action-btn.secondary {

    background: #ffffff;

    color: #0f172a;

}


.resources-action-btn.secondary:hover {

    background: #f8fafc;

}


/* =========================================================
   FOCUS ACCESSIBILITY
========================================================= */

.resources-card-link:focus-visible,
.resources-featured-item:focus-visible,
.library-links a:focus-visible,
.resources-action-btn:focus-visible,
.resource-search input:focus-visible,
.resource-search button:focus-visible {

    outline: 3px solid #94a3b8;

    outline-offset: 3px;

}


/* =========================================================
   REDUCED MOTION
========================================================= */

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

    .resources-card,
    .resources-card-link,
    .resources-stat-card,
    .resources-featured-item,
    .library-links a,
    .resources-action-btn,
    .resource-search button {

        transition: none;

    }

}


/* =========================================================
   TABLET
========================================================= */

@media (max-width: 1000px) {

    .resources-grid {

        grid-template-columns:
            repeat(2, minmax(0, 1fr));

    }


    .resources-featured {

        grid-template-columns: 1fr;

    }

}


/* =========================================================
   SMALL TABLET
========================================================= */

@media (max-width: 800px) {

    .resources-hero {

        padding: 90px 20px 75px;

    }


    .resources-intro-grid {

        grid-template-columns: 1fr;

        gap: 35px;

    }


    .resources-intro {

        padding-top: 65px;

    }


    .resources-section {

        padding: 60px 0;

    }


    .resource-library-section {

        grid-template-columns: 70px minmax(0, 1fr);

        gap: 25px;

    }

}


/* =========================================================
   MOBILE
========================================================= */

@media (max-width: 600px) {

    .resources-container {

        width: min(100% - 30px, 1200px);

    }


    .resources-hero {

        padding: 80px 15px 65px;

    }


    .resources-hero h1 {

        font-size: 2.7rem;

    }


    .resources-hero-description {

        font-size: 0.95rem;

    }


    .resource-search {

        flex-direction: column;

        padding: 7px;

    }


    .resource-search input {

        padding: 13px;

    }


    .resource-search button {

        width: 100%;

    }


    .resources-intro h2 {

        font-size: 1.85rem;

    }


    .resources-section-header h2 {

        font-size: 1.85rem;

    }


    .resources-grid {

        grid-template-columns: 1fr;

    }


    .resources-card {

        min-height: 275px;

        padding: 27px;

    }


    .resources-featured {

        padding: 32px 25px;

        border-radius: 18px;

    }


    .resources-featured h2 {

        font-size: 1.85rem;

    }


    .resource-library {

        padding-bottom: 60px;

    }


    .resource-library-section {

        grid-template-columns: 1fr;

        gap: 10px;

        padding: 32px 0;

    }


    .library-number {

        font-size: 1.5rem;

    }


    .library-content h3 {

        font-size: 1.35rem;

    }


    .library-links {

        flex-direction: column;

        align-items: stretch;

    }


    .library-links a {

        justify-content: space-between;

    }


    .contribution-box {

        padding: 40px 25px;

        border-radius: 18px;

    }


    .contribution-box h2 {

        font-size: 1.8rem;

    }


    .resources-cta {

        margin-bottom: 60px;

        padding: 48px 25px;

        border-radius: 18px;

    }


    .resources-cta h2 {

        font-size: 1.8rem;

    }


    .cta-buttons {

        flex-direction: column;

    }


    .cta-buttons .resources-action-btn {

        width: 100%;

    }

}