/* Look and feel of delinge.net: the colours of the original site and logo, in a modern responsive layout. */

:root {
    --blue: #336799;
    --blue-dark: #23476b;
    --blue-light: #eaf1f8;
    --olive: #a3a83a;
    --olive-dark: #858a22;
    --text: #3d4650;
    --muted: #6b7682;
    --border: #dbe3eb;
    --background: #eef2f6;
    --surface: #fff;
    --radius: 10px;
    --shadow: 0 1px 3px rgba(20, 40, 60, .08), 0 6px 20px rgba(20, 40, 60, .06);
}

*, *::before, *::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    color: var(--text);
    font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--background);
    -webkit-font-smoothing: antialiased;
    overflow-wrap: break-word;
}

a {
    color: var(--blue);
    text-underline-offset: 2px;
}

a:hover {
    color: var(--blue-dark);
}

h1, h2 {
    color: var(--blue-dark);
    line-height: 1.25;
}

h1 {
    font-size: 1.75rem;
    margin: 0 0 1rem;
}

h2 {
    font-size: 1.1rem;
    margin: 0 0 .5rem;
}

.page-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin: 0 0 1.25rem;
}

.page-title::after {
    content: "";
    display: block;
    width: 48px;
    height: 4px;
    margin-top: .6rem;
    border-radius: 2px;
    background: var(--olive);
}

.center .page-title::after {
    margin-left: auto;
    margin-right: auto;
}

.container {
    max-width: 1040px;
    margin: 24px auto;
}

#page {
    overflow: hidden;
    background: var(--surface);
    border-radius: 14px;
    box-shadow: var(--shadow);
}

#header img {
    display: block;
    width: 100%;
    height: auto;
}

/* Main menu */

#mainmenu {
    position: sticky;
    top: 0;
    z-index: 10;
    background: var(--blue);
    box-shadow: 0 2px 8px rgba(0, 0, 0, .12);
}

#mainmenu ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0 6px;
    list-style: none;
    margin: 0;
    padding: 0 12px;
}

#mainmenu a,
#mainmenu .link-button {
    position: relative;
    display: inline-block;
    padding: 16px 18px;
    font-family: inherit;
    font-size: 16px;
    font-weight: 600;
    line-height: 1;
    letter-spacing: .02em;
    color: #fff;
    text-decoration: none;
    opacity: .88;
    transition: opacity .15s;
}

#mainmenu a::after,
#mainmenu .link-button::after {
    content: "";
    position: absolute;
    left: 18px;
    right: 18px;
    bottom: 8px;
    height: 3px;
    border-radius: 2px;
    background: var(--olive);
    transform: scaleX(0);
    transition: transform .2s;
}

#mainmenu a:hover,
#mainmenu li.active a,
#mainmenu .link-button:hover {
    opacity: 1;
}

#mainmenu a:hover::after,
#mainmenu li.active a::after,
#mainmenu .link-button:hover::after {
    transform: scaleX(1);
}

.inline-form {
    display: inline;
    margin: 0;
}

.link-button {
    background: none;
    border: 0;
    cursor: pointer;
}

/* Portfolio category menu */

#categorymenu {
    background: var(--blue-light);
    border-bottom: 1px solid var(--border);
}

#categorymenu ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    list-style: none;
    margin: 0;
    padding: 12px;
}

#categorymenu a {
    display: inline-block;
    padding: 6px 16px;
    font-size: .9rem;
    font-weight: 500;
    color: var(--blue-dark);
    text-decoration: none;
    border-radius: 999px;
    transition: background-color .15s, color .15s;
}

#categorymenu a:hover {
    background: #fff;
}

#categorymenu li.active a {
    background: var(--blue);
    color: #fff;
}

/* Content */

#content {
    padding: 44px 64px 56px;
}

#content::after {
    content: "";
    display: block;
    clear: both;
}

.lead {
    font-size: 1.15rem;
    color: var(--blue-dark);
}

.small-print {
    max-width: 760px;
    margin: 3rem auto 0;
    font-size: .78rem;
    line-height: 1.6;
    color: var(--muted);
    text-align: center;
}

.back-link {
    display: inline-block;
    margin-bottom: 1.5rem;
    font-weight: 500;
    text-decoration: none;
}

/* Buttons */

.button-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 1.75rem;
}

.btn,
.form button[type="submit"] {
    display: inline-block;
    padding: 12px 24px;
    font-family: inherit;
    font-size: 15px;
    font-weight: 600;
    line-height: 1.2;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color .15s, color .15s, border-color .15s, transform .15s;
}

.btn:hover,
.form button[type="submit"]:hover {
    transform: translateY(-1px);
}

.btn-primary,
.form button[type="submit"] {
    background: var(--olive);
    color: #fff;
}

.btn-primary:hover,
.form button[type="submit"]:hover {
    background: var(--olive-dark);
    color: #fff;
}

.btn-outline {
    border-color: var(--blue);
    color: var(--blue);
}

.btn-outline:hover {
    background: var(--blue);
    color: #fff;
}

/* Home */

.intro {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 48px;
    align-items: center;
}

.intro p {
    margin: 0 0 1rem;
}

.home-image {
    display: block;
    width: 100%;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transform: rotate(1.5deg);
}

.features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 56px;
}

.feature {
    padding: 24px;
    background: var(--blue-light);
    border-top: 4px solid var(--olive);
    border-radius: var(--radius);
}

.feature p {
    margin: 0;
    font-size: .95rem;
}

/* Contact */

.contact {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    gap: 32px 56px;
}

.contact-details {
    flex: 0 0 280px;
    padding: 24px;
    line-height: 1.8;
    background: var(--blue-light);
    border-left: 4px solid var(--olive);
    border-radius: var(--radius);
}

.contact .form {
    flex: 1 1 360px;
}

/* Portfolio */

.center {
    text-align: center;
}

.category-tiles,
.gallery {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 24px;
    margin: 1.5rem 0 2rem;
}

.category-tiles a {
    display: block;
    width: 200px;
    padding: 28px 16px 20px;
    font-weight: 600;
    color: var(--blue-dark);
    text-align: center;
    text-decoration: none;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: transform .2s, box-shadow .2s, border-color .2s;
}

.category-tiles a:hover,
.gallery-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
    border-color: var(--olive);
}

.category-tiles img {
    display: block;
    height: 72px;
    width: auto;
    margin: 0 auto 12px;
}

.gallery-item {
    width: 200px;
    padding: 8px 8px 12px;
    font-size: .9rem;
    font-weight: 500;
    text-align: center;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: transform .2s, box-shadow .2s, border-color .2s;
}

.gallery-item a {
    text-decoration: none;
}

.gallery-item img {
    display: block;
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    margin-bottom: 10px;
    border-radius: 6px;
    background: var(--blue-light);
}

.album-description {
    max-width: 760px;
    margin: 1rem auto;
    text-align: left;
}

.admin-actions {
    margin: 0 0 1.5rem;
    padding: 12px 16px;
    font-size: .9rem;
    border: 1px dashed var(--blue);
    border-radius: 8px;
    background: var(--blue-light);
}

.admin-actions form {
    display: inline;
}

.admin-actions a,
.admin-actions .link-button,
.gallery-item .link-button {
    margin-right: 1.5em;
    color: var(--blue);
    font: inherit;
    text-decoration: underline;
    padding: 0;
}

.gallery-item .link-button {
    margin: 6px 0 0;
    font-size: .85rem;
}

.danger {
    color: #c0392b !important;
}

/* Lightbox */

.lightbox {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: rgba(15, 25, 35, .88);
    cursor: zoom-out;
    animation: fade-in .2s ease-out;
}

.lightbox img {
    max-width: 100%;
    max-height: 100%;
    border-radius: 6px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, .5);
    background: #fff;
}

.lightbox[hidden] {
    display: none;
}

@keyframes fade-in {
    from {
        opacity: 0;
    }
}

/* Flash messages */

.flash-error,
.flash-success {
    padding: 14px 18px;
    margin-bottom: 1.5rem;
    border: 1px solid;
    border-left-width: 4px;
    border-radius: 8px;
}

.flash-error {
    background: #fdecea;
    color: #8a1f11;
    border-color: #f5b7b1;
}

.flash-success {
    background: #eef5dc;
    color: #3d4d0f;
    border-color: var(--olive);
}

/* Forms */

.form {
    max-width: 480px;
}

.form .row {
    margin: 0 0 16px;
}

.form label {
    display: block;
    margin-bottom: 4px;
    font-weight: 600;
    font-size: .9rem;
    color: var(--blue-dark);
}

.form input[type="text"],
.form input[type="email"],
.form input[type="tel"],
.form input[type="password"],
.form input[type="file"],
.form select,
.form textarea {
    width: 100%;
    max-width: 100%;
    padding: 10px 12px;
    font: inherit;
    font-size: .95rem;
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 8px;
    background: #fbfcfd;
    transition: border-color .15s, box-shadow .15s;
}

.form input:focus,
.form select:focus,
.form textarea:focus {
    outline: none;
    border-color: var(--blue);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(51, 103, 153, .18);
}

.form textarea {
    min-height: 8em;
    resize: vertical;
}

.form input.error,
.form textarea.error,
.form select.error {
    background: #fff6f5;
    border-color: #c0392b;
}

.form .errorMessage {
    margin-top: 4px;
    color: #c0392b;
    font-size: .85rem;
}

.form .errorSummary {
    padding: 12px 16px;
    margin: 0 0 20px;
    font-size: .9rem;
    color: #8a1f11;
    border: 1px solid #f5b7b1;
    border-left-width: 4px;
    border-radius: 8px;
    background: #fdecea;
}

.form .errorSummary ul {
    margin: 0;
    padding: 0 0 0 20px;
}

.form .hint {
    margin-top: 4px;
    color: var(--muted);
    font-size: .85rem;
}

/* Footer */

#footer {
    padding: 36px 64px 20px;
    font-size: .9rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, .8);
    background: var(--blue-dark);
}

#footer strong {
    color: #fff;
}

#footer a {
    color: #fff;
    text-decoration: none;
}

#footer a:hover {
    text-decoration: underline;
}

.footer-columns {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.footer-linkedin img {
    vertical-align: -3px;
    border-radius: 3px;
}

.footer-bottom {
    margin-top: 28px;
    padding-top: 16px;
    font-size: .8rem;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, .15);
}

/* Small screens */

@media (max-width: 860px) {
    .intro {
        grid-template-columns: minmax(0, 1fr);
    }

    .home-image {
        max-width: 340px;
        margin: 0 auto;
    }

    .features {
        grid-template-columns: minmax(0, 1fr);
    }
}

@media (max-width: 700px) {
    .container {
        margin: 0;
    }

    #page {
        border-radius: 0;
    }

    #content {
        padding: 28px 16px 40px;
    }

    #footer {
        padding: 28px 16px 16px;
    }

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

    #mainmenu ul {
        gap: 0;
        padding: 0 4px;
    }

    #mainmenu a,
    #mainmenu .link-button {
        padding: 13px 10px;
        font-size: 15px;
    }

    #mainmenu a::after,
    #mainmenu .link-button::after {
        left: 10px;
        right: 10px;
        bottom: 6px;
    }

    h1,
    .page-title {
        font-size: 1.45rem;
    }

    .contact-details {
        flex-basis: 100%;
    }

    .gallery,
    .category-tiles {
        gap: 12px;
    }

    .gallery-item,
    .category-tiles a {
        width: calc(50% - 6px);
    }
}