/*
File: assets/css/theme.css
Purpose: Theme layer over Bootstrap 5 for the "Harbor" (cyan) template —
dark one-pager/multi-page kit: transparent hero nav, full-viewport
spotlight panels, feature/CTA wrappers, sidebar layouts, form and
table styling, footer, and the in-page theme switcher (data-theme
accent + spotlight-tone overrides plus swatch styles) that makes
this a self-describing tour of the whole template.
Loads after bootstrap.min.css.
Used by: index.html, elements.html, left-sidebar.html, right-sidebar.html,
no-sidebar.html
*/
/* Palette + metrics */
:root {
--accent: #55b8c4;
--accent-rgb: 85, 184, 196;
--accent-hover: #68c0cb;
--accent-active: #42b0bd;
--spotlight-b: #ce6a86;
--spotlight-c: #78c8b2;
--ink: #1c1d26;
--panel: #272833;
--panel-transparent: rgba(23, 24, 32, 0.95);
--panel-hairline: rgba(255, 255, 255, 0.035);
--fg-bold: #ffffff;
--fg: rgba(255, 255, 255, 0.75);
--fg-light: rgba(255, 255, 255, 0.5);
--fg-lighter: rgba(255, 255, 255, 0.15);
--border: rgba(255, 255, 255, 0.3);
--border-bg: rgba(255, 255, 255, 0.075);
--navbar-height: 3.5rem;
/* Bootstrap theme variables: several core components (.table,
.table-striped, form validation states, etc.) read --bs-body-bg /
--bs-emphasis-color / --bs-border-color directly rather than
inheriting the computed body background. Left at Bootstrap's
light-theme defaults, .table renders a white box on this dark page
regardless of the .table color rules below — override at the root
so every Bootstrap component that reads them stays dark by default. */
--bs-body-bg: var(--ink);
--bs-body-color: var(--fg);
--bs-emphasis-color: var(--fg-bold);
--bs-border-color: var(--border);
}
/* In-page theme preview: the navbar swatches set data-theme on so
all seven palettes can be compared without opening another build. Cyan
is the default (:root above); green and magenta mirror the two real
variant folders (bs5/harbor/green|magenta); amber, violet, crimson, and
slate are four additional palettes in the same dark-theme-compatible
family, added so the switcher offers seven choices like the orbit/blue
and apex/blue references. Each block overrides all six custom
properties the theme reads: the accent triad (used on buttons, links,
focus rings, and the tone-a spotlight border) plus the two secondary
spotlight-tone colors (tone-b, tone-c borders on spotlight panels two
and three). --ink/--panel/--fg-* stay fixed across every palette —
only the accent hues change, so contrast against the dark chrome
never has to be re-checked per theme. */
:root[data-theme="green"] {
--accent: #59b377;
--accent-rgb: 89, 179, 119;
--accent-hover: #6abb85;
--accent-active: #4ca66a;
--spotlight-b: #4ea5d2;
--spotlight-c: #d57dad;
}
:root[data-theme="magenta"] {
--accent: #e44c65;
--accent-rgb: 228, 76, 101;
--accent-hover: #e76278;
--accent-active: #e13652;
--spotlight-b: #5480f1;
--spotlight-c: #39c088;
}
:root[data-theme="amber"] {
--accent: #d69a44;
--accent-rgb: 214, 154, 68;
--accent-hover: #dda95c;
--accent-active: #c98d36;
--spotlight-b: #6a93d1;
--spotlight-c: #6bbf8e;
}
:root[data-theme="violet"] {
--accent: #9a7fd6;
--accent-hover: #a891dd;
--accent-active: #8a6bcf;
--accent-rgb: 154, 127, 214;
--spotlight-b: #d68f6a;
--spotlight-c: #5db2b0;
}
:root[data-theme="crimson"] {
--accent: #d64e6f;
--accent-hover: #dd657f;
--accent-active: #c93a5d;
--accent-rgb: 214, 78, 111;
--spotlight-b: #d6a24e;
--spotlight-c: #5f9fd6;
}
:root[data-theme="slate"] {
--accent: #6c93b8;
--accent-hover: #80a3c4;
--accent-active: #5a83a9;
--accent-rgb: 108, 147, 184;
--spotlight-b: #b87f6c;
--spotlight-c: #8bb86c;
}
/* Base typography */
html {
scroll-behavior: smooth;
scroll-padding-top: calc(var(--navbar-height) - 1px);
}
/* No overflow-x on body: it would flip computed overflow-y to auto and break
Bootstrap ScrollSpy's scroll-root detection. Sections clip their own reveals. */
body {
background: var(--ink);
font-family: 'Roboto', Helvetica, sans-serif;
font-weight: 100;
font-size: 1.25rem;
line-height: 1.75;
color: var(--fg);
}
body.has-fixed-navbar {
padding-top: var(--navbar-height);
}
h1, h2, h3, h4, h5, h6 {
font-weight: 300;
color: var(--fg-bold);
line-height: 1.25;
margin: 0 0 1em 0;
}
h2 { font-size: 2em; letter-spacing: -0.025em; }
h3 { font-size: 1.35em; }
h4 { font-size: 1.1em; }
p { margin: 0 0 1.5em 0; }
a {
color: var(--accent);
text-decoration: none;
border-bottom: dotted 1px;
transition: border-color 0.2s ease-in-out, color 0.2s ease-in-out;
}
a:hover {
border-bottom-color: transparent;
}
strong, b { color: var(--fg-bold); font-weight: 300; }
blockquote {
border-left: solid 0.5em var(--border-bg);
padding: 0.5em 0 0.5em 2em;
font-style: italic;
}
code {
background: var(--border-bg);
border-radius: 4px;
font-family: 'Courier New', monospace;
padding: 0.15em 0.5em;
}
pre {
background: var(--border-bg);
border-radius: 4px;
font-family: 'Courier New', monospace;
padding: 1em 1.5em;
overflow-x: auto;
}
pre code { padding: 0; }
.section-heading {
text-align: center;
margin: 0 0 4em 0;
position: relative;
}
.section-heading:after {
content: '';
display: inline-block;
height: 0.2em;
max-width: 20em;
width: 75%;
background: var(--accent);
}
@media (max-width: 1680px) {
body { font-size: 1.1rem; }
}
@media (max-width: 1280px) {
body { font-size: 0.95rem; }
}
/* Navbar */
.site-navbar {
min-height: var(--navbar-height);
background: var(--panel-transparent);
box-shadow: 0 0 0.25em 0 rgba(0, 0, 0, 0.25);
font-size: 0.9rem;
}
.site-navbar.site-navbar-transparent {
position: absolute;
top: 0;
left: 0;
width: 100%;
background: transparent;
box-shadow: none;
z-index: 30;
}
.site-navbar .site-logo {
font-weight: 300;
color: var(--fg-bold);
}
.site-navbar .nav-link {
color: var(--fg);
}
.site-navbar .nav-link:hover,
.site-navbar .nav-link.active {
color: var(--accent);
}
/* Theme picker — seven accent swatches, reachable at every width: inline
in the navbar-collapse on desktop (lg and up, where the collapse is
always open), inside the collapsed panel on phones/tablets (below the
navbar-toggler breakpoint). The active swatch gets a white ring; each
swatch's fill is a static hex (not var(--accent)) so all seven stay
visible regardless of which theme is currently applied. */
.theme-picker {
display: flex;
flex-wrap: wrap;
align-items: center;
gap: 0.6em;
margin: 0;
padding: 0.6em 0 0.6em 1em;
list-style: none;
}
.theme-picker .theme-swatch {
width: 1.15em;
height: 1.15em;
padding: 0;
border: solid 2px var(--fg-lighter);
border-radius: 50%;
cursor: pointer;
transition: border-color 0.25s ease-in-out, transform 0.25s ease-in-out;
}
.theme-picker .theme-swatch:hover,
.theme-picker .theme-swatch:focus {
border-color: var(--fg-light);
}
.theme-picker .theme-swatch.is-active {
border-color: var(--fg-bold);
transform: scale(1.15);
}
.theme-swatch[data-theme-choice="cyan"] { background-color: #55b8c4; }
.theme-swatch[data-theme-choice="green"] { background-color: #59b377; }
.theme-swatch[data-theme-choice="magenta"] { background-color: #e44c65; }
.theme-swatch[data-theme-choice="amber"] { background-color: #d69a44; }
.theme-swatch[data-theme-choice="violet"] { background-color: #9a7fd6; }
.theme-swatch[data-theme-choice="crimson"] { background-color: #d64e6f; }
.theme-swatch[data-theme-choice="slate"] { background-color: #6c93b8; }
@media (max-width: 991.98px) {
.site-navbar .navbar-collapse {
background: var(--panel-transparent);
margin-top: 0.5rem;
border-radius: 4px;
padding: 0.5rem 1rem;
}
.theme-picker {
padding-left: 0;
border-top: solid 1px var(--panel-hairline);
margin-top: 0.5em;
padding-top: 0.75em;
}
}
/* Nested dropdown (Layouts > Submenu) */
.site-navbar .dropdown-menu {
background: var(--panel-transparent);
border: 0;
border-radius: 4px;
box-shadow: 0 0.075em 0.35em 0 rgba(0, 0, 0, 0.125);
padding: 0.25em 0;
}
.site-navbar .dropdown-item {
color: var(--fg);
padding: 0.5em 1.25em;
}
.site-navbar .dropdown-item:hover,
.site-navbar .dropdown-item:focus {
background: var(--panel-hairline);
color: var(--accent);
}
/* Current-page item: override Bootstrap's default blue
.dropdown-item.active fill with the theme accent instead. */
.site-navbar .dropdown-item.active,
.site-navbar .dropdown-item:active {
background: var(--panel-hairline);
color: var(--accent);
}
.nav-submenu {
position: relative;
}
.nav-submenu > .dropdown-menu {
display: none;
position: absolute;
top: 0;
left: 100%;
margin-left: 0.25em;
}
.nav-submenu > .dropdown-menu.show {
display: block;
}
.nav-submenu > .nav-submenu-toggle:after {
content: '\f105';
font-family: 'Font Awesome 7 Free';
font-weight: 900;
float: right;
margin-left: 1em;
}
@media (min-width: 992px) {
/* Desktop convenience: hover also reveals the submenu. Click-toggle
(main.js) covers keyboard/touch and stays in sync via the .show class. */
.nav-submenu:hover > .dropdown-menu {
display: block;
}
}
@media (max-width: 991.98px) {
.nav-submenu > .dropdown-menu {
position: static;
left: auto;
margin-left: 0;
padding-left: 1em;
}
}
/* Banner (hero, index.html only) */
.hero-banner {
background-color: var(--panel);
background-image: url("../../images/hero-banner.jpg");
background-position: center center;
background-size: cover;
background-attachment: fixed;
box-shadow: 0 0.25em 0.5em 0 rgba(0, 0, 0, 0.25);
min-height: 100vh;
position: relative;
}
.hero-banner:before {
content: '';
position: absolute;
inset: 0;
background-image: linear-gradient(var(--panel-transparent), var(--panel-transparent)), url("images/overlay.png");
}
.hero-banner .hero-content {
position: relative;
z-index: 1;
max-width: 60em;
}
.hero-banner .hero-avatar {
border-radius: 100%;
overflow: hidden;
width: 12em;
height: 12em;
}
.hero-banner .hero-avatar img {
width: 100%;
height: 100%;
object-fit: cover;
}
@media (hover: none), (max-width: 767.98px) {
.hero-banner { background-attachment: scroll; }
}
/* Goto-next arrow */
.goto-next {
position: absolute;
left: 50%;
bottom: 1.5em;
transform: translateX(-50%);
width: 3em;
height: 3em;
z-index: 2;
}
.goto-next:before {
content: '';
display: block;
width: 100%;
height: 100%;
background-image: url("images/arrow.svg");
background-position: center center;
background-repeat: no-repeat;
background-size: contain;
}
/* Spotlight panels */
/* display:flex lets the inner .container stretch to the section's full
min-height-driven height — a bare .h-100 cannot resolve against min-height,
which collapsed the dock-left/right boxes to content height. */
.spotlight-section {
display: flex;
position: relative;
overflow: hidden;
min-height: 100vh;
background-color: var(--panel);
background-position: center center;
background-size: cover;
background-attachment: fixed;
box-shadow: 0 0.25em 0.5em 0 rgba(0, 0, 0, 0.25);
}
.spotlight-section:before {
content: '';
position: absolute;
inset: 0;
background-image: url("images/overlay.png");
}
@media (hover: none), (max-width: 767.98px) {
.spotlight-section { background-attachment: scroll; }
}
/* Desktop background art per panel — original set this via JS from the
inline ![]()
's src; a static rule is simpler and needs no inline style. */
.spotlight-panel-1 { background-image: url("../../images/spotlight-panel-01.jpg"); }
.spotlight-panel-2 { background-image: url("../../images/spotlight-panel-02.jpg"); }
.spotlight-panel-3 { background-image: url("../../images/spotlight-panel-03.jpg"); }
/* Mobile source image — hidden on desktop (CSS background carries the
photo instead), shown stacked above the content card on mobile. */
.spotlight-source-image {
display: none;
}
.spotlight-content {
position: relative;
z-index: 1;
background: var(--panel-transparent);
border-style: solid;
border-color: var(--accent);
padding: 3em 2em;
}
.spotlight-section.tone-b .spotlight-content { border-color: var(--spotlight-b); }
.spotlight-section.tone-c .spotlight-content { border-color: var(--spotlight-c); }
.spotlight-content.dock-bottom {
position: absolute;
left: 0;
bottom: 0;
border-top-width: 0.35em;
width: 100%;
}
.spotlight-content.dock-left,
.spotlight-content.dock-right {
position: absolute;
top: 0;
height: 100%;
max-width: 28em;
display: flex;
flex-direction: column;
justify-content: center;
}
.spotlight-content.dock-left { left: 0; border-right-width: 0.35em; }
.spotlight-content.dock-right { right: 0; border-left-width: 0.35em; }
.spotlight-section .goto-next {
transition: opacity 0.75s ease-in;
}
/* Below the "spotlight" desktop treatment: drop the fixed full-bleed
background, show the real ![]()
stacked above a static content card
(matches the original's medium-breakpoint fallback). */
@media (max-width: 991.98px) {
.spotlight-section {
min-height: 0;
background-image: none !important;
}
.spotlight-section .goto-next {
display: none;
}
.spotlight-source-image {
display: block;
width: 100%;
max-height: 40vh;
object-fit: cover;
}
.spotlight-content,
.spotlight-content.dock-bottom,
.spotlight-content.dock-left,
.spotlight-content.dock-right {
position: static;
display: block;
width: 100%;
max-width: none;
height: auto;
text-align: center;
border-width: 0 !important;
border-top-width: 0.35em !important;
}
}
/* Feature + CTA wrappers */
.feature-wrapper {
padding: 6em 0;
overflow: hidden;
}
.cta-wrapper {
padding: 6em 0;
background: var(--accent);
overflow: hidden;
}
.cta-wrapper .form-control {
border-color: rgba(255, 255, 255, 0.3);
color: var(--fg-bold);
}
.cta-wrapper .form-control:focus {
border-color: rgba(255, 255, 255, 0.5);
box-shadow: none;
}
.cta-wrapper .form-control::placeholder {
color: rgba(255, 255, 255, 0.6);
}
.cta-wrapper .btn-accent {
background: var(--fg-bold);
color: var(--accent);
}
.cta-wrapper .btn-accent:hover {
background: rgba(255, 255, 255, 0.075);
box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.5);
color: var(--fg-bold);
}
.feature-icon {
display: inline-flex;
align-items: center;
justify-content: center;
width: 4em;
height: 4em;
border-radius: 100%;
background: var(--panel);
font-size: 1.75rem;
color: var(--fg);
margin-bottom: 0.75em;
}
/* Buttons */
.btn-accent,
.btn-ghost {
border-radius: 4px;
height: 3em;
line-height: 3em;
padding: 0 2.25em;
font-weight: 300;
display: inline-block;
text-align: center;
white-space: nowrap;
text-decoration: none;
transition: background-color 0.2s ease-in-out, color 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}
.btn-accent {
background-color: var(--accent);
border: 0;
color: #fff;
}
.btn-accent:hover {
background-color: var(--accent-hover);
color: #fff;
}
.btn-accent:active {
background-color: var(--accent-active);
color: #fff;
}
.btn-ghost {
background-color: transparent;
box-shadow: inset 0 0 0 1px var(--border);
color: var(--fg-bold);
}
.btn-ghost:hover {
box-shadow: inset 0 0 0 1px var(--accent);
color: var(--accent);
}
.btn-ghost:active {
background-color: rgba(var(--accent-rgb), 0.15);
}
.btn-accent.disabled,
.btn-ghost.disabled {
background-color: var(--border);
box-shadow: none;
color: var(--fg-bold);
cursor: default;
opacity: 0.25;
}
.btn-sm-custom {
height: 2.4em;
line-height: 2.4em;
padding: 0 1.5em;
font-size: 0.8em;
}
.btn-lg-custom {
font-size: 1.35em;
}
.action-list {
list-style: none;
margin: 0 0 1.5em 0;
padding: 0;
display: flex;
flex-wrap: wrap;
align-items: flex-start;
gap: 0.75em;
}
.action-list.action-list-vertical {
flex-direction: column;
}
/* Horizontal "fit": buttons share the row width equally. */
.action-list.action-list-fit:not(.action-list-vertical) .btn-accent,
.action-list.action-list-fit:not(.action-list-vertical) .btn-ghost {
flex: 1 1 0;
}
/* Vertical "fit": buttons stretch to the full column width. */
.action-list.action-list-vertical.action-list-fit {
align-items: stretch;
}
/* Forms */
label { color: var(--fg-bold); font-size: 0.9em; margin: 0 0 0.5em 0; display: block; }
.form-control,
.form-select {
background: transparent;
border-radius: 4px;
border: solid 1px var(--border);
color: var(--fg);
}
.form-control:focus,
.form-select:focus {
background: transparent;
border-color: var(--accent);
box-shadow: 0 0 0 0.25rem rgba(var(--accent-rgb), 0.25);
color: var(--fg);
}
.form-control::placeholder {
color: var(--fg-light);
}
.form-select option {
background-color: var(--ink);
color: var(--fg-bold);
}
.form-check-input {
background-color: transparent;
border-color: var(--border);
}
.form-check-input:checked {
background-color: var(--fg-lighter);
border-color: var(--border);
}
.form-check-input:focus {
border-color: var(--accent);
box-shadow: 0 0 0 0.25rem rgba(var(--accent-rgb), 0.25);
}
.form-check-label {
color: var(--fg);
font-weight: 100;
}
/* Tables */
.table {
color: var(--fg);
}
.table > thead {
border-bottom-color: var(--border);
}
.table > thead > tr > th {
color: var(--fg-bold);
font-weight: 300;
}
.table > tbody > tr {
border-color: var(--border-bg);
}
.table-striped > tbody > tr:nth-of-type(odd) > * {
background-color: var(--border-bg);
color: var(--fg);
}
.table-bordered,
.table-bordered > :not(caption) > * > * {
border-color: var(--border);
}
/* Images */
.textured-image {
position: relative;
display: inline-block;
border-radius: 4px;
overflow: hidden;
}
.textured-image:before {
content: '';
position: absolute;
inset: 0;
background-image: url("images/overlay.png");
z-index: 1;
}
.textured-image img {
display: block;
border-radius: 4px;
}
/* Social/utility icon rows (elements page + footer) */
.icon-row {
list-style: none;
margin: 0 0 1.5em 0;
padding: 0;
display: flex;
gap: 0.5em;
}
.icon-row .icon-link {
display: inline-flex;
align-items: center;
justify-content: center;
width: 2.5em;
height: 2.5em;
border-radius: 100%;
color: var(--fg);
border-bottom: 0;
}
.icon-row .icon-link:hover {
color: var(--accent);
}
.icon-row.icon-row-outline .icon-link {
box-shadow: inset 0 0 0 1px var(--fg-light);
color: var(--fg-bold);
}
.icon-row.icon-row-outline .icon-link:hover {
box-shadow: inset 0 0 0 1px var(--accent);
color: var(--accent);
}
/* Sidebar layouts (left-sidebar / right-sidebar / no-sidebar) */
.page-content-section {
padding: 6em 0 4em 0;
}
.sidebar-block + .sidebar-block {
margin-top: 2em;
padding-top: 2em;
border-top: solid 1px var(--border-bg);
}
.article-body ul {
list-style: disc;
padding-left: 1.5em;
margin: 0 0 1.5em 0;
}
/* Footer */
.site-footer {
background: var(--panel);
color: var(--fg-light);
padding: 4em 0;
text-align: center;
}
.site-footer .icon-row {
justify-content: center;
margin-bottom: 2em;
}
.site-footer .copyright-list {
list-style: none;
margin: 0;
padding: 0;
font-size: 0.8em;
}
.site-footer .copyright-list li {
display: inline-block;
border-left: solid 1px var(--border);
margin-left: 1.5em;
padding-left: 1.5em;
}
.site-footer .copyright-list li:first-child {
border-left: 0;
margin-left: 0;
padding-left: 0;
}
.site-footer .copyright-list a {
color: inherit;
}
/* Reveal-on-scroll (scrollex replacement; JS toggles .is-visible) */
@media (prefers-reduced-motion: no-preference) {
[data-reveal] {
transition: opacity 1s ease, transform 1s ease;
}
[data-reveal]:not(.is-visible) {
opacity: 0;
}
[data-reveal="from-top"]:not(.is-visible) { transform: translateY(-5em); }
[data-reveal="from-bottom"]:not(.is-visible) { transform: translateY(5em); }
[data-reveal="from-left"]:not(.is-visible) { transform: translateX(-5em); }
[data-reveal="from-right"]:not(.is-visible) { transform: translateX(5em); }
[data-reveal="fade-up"]:not(.is-visible) { transform: translateY(1em); }
[data-reveal="fade"]:not(.is-visible) { transform: none; }
}