/* CPIVH Style Sheet */

@font-face {
    font-family: "baskerville";
    font-weight: 100 1000;
    src:
        url("../assets/fonts/librebaskerville-variablefont_wght-webfont.woff2")
            format("woff2"),
        url("../assets/fonts/librebaskerville-variablefont_wght-webfont.woff")
            format("woff2");
    font-display: swap;
}

@font-face {
    font-family: "d-din-bold";
    font-weight: 800;
    src:
        url("../assets/fonts/d-dincondensed-bold-webfont.woff2") format("woff2"),
        url("../assets/fonts/d-dincondensed-bold-webfont.woff") format("woff2");
    font-display: swap;
}

@font-face {
    font-family: "d-din";
    font-weight: 400;
    src:
        url("../assets/fonts/d-dincondensed-webfont.woff2") format("woff2"),
        url("../assets/fonts/d-dincondensed-webfont.woff") format("woff2");
    font-display: swap;
}
/*
# Font info:
- Original font TTF font files converted to WOFF(2) via fontsquirrel.com/tools/webfont-generator
- Fonts used have free commercial use licenses
- DIN alternative: DIN 1451 from https://fontsarena.com/blog/free-din-font-and-alternatives/
- Baskerville alternative: Libre Baskerville (variable) from Google Fonts
*/

:root {
    /* Brand base palette */
    --blue: oklch(0.2682 0.1139 260.72); /* #00205c */
    --red: oklch(0.5239 0.2046 17.29); /*#c40d3c*/
    --tan: oklch(0.894 0.0067 96.71); /*#d6d2c4*/
    --teal: oklch(0.615 0.0267 230.73); /*#758892*/

    /* Brand color scales (2 steps light 2 steps dark) */
    --blue-l1: oklch(from var(--blue) calc(l * 1.5) c h);
    --blue-l2: oklch(from var(--blue) calc(l * 2) c h);
    --blue-d1: oklch(from var(--blue) calc(l * 0.625) c h);
    --blue-d2: oklch(from var(--blue) calc(l * 0.25) c h);
    --red-l1: oklch(from var(--red) calc(l * 1.55) c h);
    --red-l2: oklch(from var(--red) calc(l * 1.75) c h);
    --red-d1: oklch(from var(--red) calc(l * 0.625) c h);
    --red-d2: oklch(from var(--red) calc(l * 0.3875) c h);
    --tan-l1: oklch(from var(--tan) calc(l * 1.0375) c h);
    --tan-l2: oklch(from var(--tan) calc(l * 1.08) c h);
    --tan-d1: oklch(from var(--tan) calc(l * 0.875) c h);
    --tan-d2: oklch(from var(--tan) calc(l * 0.75) c h);
    --teal-l1: oklch(from var(--teal) calc(l * 1.125) c h);
    --teal-l2: oklch(from var(--teal) calc(l * 1.25) c h);
    --teal-d1: oklch(from var(--teal) calc(l * 0.675) c h);
    --teal-d2: oklch(from var(--teal) calc(l * 0.5) c h);

    /* Ensure WCAG AA contrast */
    --text-on-light: oklch(0.3 0 0); /* L=0.3 for dark text */
    --text-on-dark: oklch(0.9 0 0); /* L=0.9 for light text */

    /* Consistent perceived brightness */
    --success: oklch(0.7 0.15 140); /* Green */
    --warning: oklch(0.7 0.15 90); /* Yellow */
    --error: oklch(0.7 0.15 30); /* Red */

    /* Layout units: Full */
    --u1: 8px;
    --u2: calc(var(--u1) * 2);
    --u3: calc(var(--u1) * 3);
    --u4: calc(var(--u1) * 4);
    --u5: calc(var(--u1) * 5);
    --u6: calc(var(--u1) * 6);
    --u7: calc(var(--u1) * 7);
    --u8: calc(var(--u1) * 8);
    --u9: calc(var(--u1) * 9);
    --u10: calc(var(--u1) * 10);
    /* Layout units: Fractional */
    --uf2: calc(var(--u1) / 2);
    --uf4: calc(var(--u1) / 4);

    /* Standard font sizing based on defined units */
    font-size: 14px;
    line-height: var(--u3);
}

@media (prefers-color-scheme: light) {
    :root {
        background-color: var(--blue-d2);
        color: var(--text-on-dark);
    }
}
@media (prefers-color-scheme: light) {
    :root {
        background-color: var(--tan-l2);
        color: var(--text-on-light);
    }
}

* {
    margin: 0;
    padding: 0;
    border: 0;
    box-sizing: border-box;
    vertical-align: baseline;
    font-size: 100%;
    font: inherit;
    font-family: "baskerville", "Georgia", "Times New Roman", serif;
}

html {
    scroll-behavior: smooth;
}

/* Base layout (small screens at 320-480px) */
body {
    position: relative;
    display: flex;
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    height: 100%;
    min-height: 100vh;
    margin: 0;
    padding: 0;
}

body.waves {
    background-color: var(--tan);
    background:
        linear-gradient(
            to bottom,
            rgba(214, 210, 196, 0) 0%,
            rgba(214, 210, 196, 0) 18%,
            rgba(214, 210, 196, 0.68) 50%,
            rgba(214, 210, 196, 1) 75%,
            rgba(214, 210, 196, 1) 100%
        ),
        url("../img/cpivh-bg-pattern-wave-blue.png"),
        linear-gradient(
            to bottom,
            rgba(214, 210, 196, 1) 0%,
            rgba(214, 210, 196, 1) 100%
        );
    background-repeat: repeat;
    background-size: var(--u2);
}

body.horizon {
    background-color: #ffffff;
    background:
        linear-gradient(
            to bottom,
            rgba(198, 213, 255, 1) 0%,
            rgba(245, 245, 255, 1) 316px,
            rgba(117, 113, 146, 1) 317px,
            rgba(117, 113, 146, 0.7) 50%,
            rgba(117, 113, 146, 0.5) 75%,
            rgba(117, 113, 146, 0) 100%
        ),
        url("../img/cpivh-bg-pattern-wave-teal.png"),
        linear-gradient(
            to bottom,
            rgba(255, 255, 255, 1) 0%,
            rgba(255, 255, 255, 1) 100%
        );
    background-repeat: repeat;
    background-size: var(--u2);
}

body.chart {
    background-color: #ffffff;
    background:
        linear-gradient(
            to bottom,
            rgba(255, 255, 255, 0) 45%,
            rgba(255, 255, 255, 0.65) 60%,
            rgba(255, 255, 255, 1) 80%
        ),
        url("../img/cpivh-bg-stars-1.png"), url("../img/cpivh-bg-stars-2.png"),
        url("../img/cpivh-bg-current-chart-r-sm-teal.svg"),
        url("../img/cpivh-bg-current-chart-l-sm-teal.svg"),
        radial-gradient(
            ellipse at bottom,
            var(--blue-l1) 20%,
            var(--blue) 60%,
            var(--blue-d1) 100%
        );
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-position:
        left 80%,
        center 0%,
        center 20%,
        right 80%;
    background-size:
        cover,
        100% auto,
        100% auto,
        60% auto,
        60% auto,
        cover;
}

body.basic {
    background:
        url("../img/cpivh-pattern-1v-tan.svg"),
        url("../img/cpivh-pattern-1v-tan.svg");
    background-position:
        0 0,
        100% 0;
    background-repeat: repeat-y, repeat-y;
    background-size:
        32px auto,
        32px auto;
}

header,
main {
    width: 90%;
    min-width: 300px;
    max-width: 600px;
    margin: 0 auto;
}
footer {
    width: 100%;
    min-width: 300px;
    /*max-width: 600px;*/
    margin: 0 auto;
}

header {
    display: flex;
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: center;
    gap: var(--u2);
    margin-top: var(--u2);
    padding: 0 0 var(--u3) 0;
}

main {
    flex-grow: 1;
}

.waves header,
.chart header {
    border-radius: var(--u3) var(--u3) 0 0;
    background-color: #fff;
}
.horizon header {
    height: 320px;
    max-height: 320px;
    margin: 0;
    padding-bottom: var(--u5);
    background-image: url("../img/bg-island.svg");
    background-repeat: no-repeat;
    background-position: bottom center;
    background-size: 100% auto;
}
.chart header {
    background: linear-gradient(
        to bottom,
        var(--tan) 20%,
        var(--tan-l2) 80%,
        rgba(255, 255, 255, 1) 95%
    );
}

.waves main,
.chart main {
    border-radius: 0 0 0 0;
    background-color: #fff;
}

.horizon main {
    background-color: var(--tan-l2);
    margin-bottom: var(--u2);
    border-radius: 0 0 var(--u3) var(--u3);
}

.waves footer {
    width: 90%;
    max-width: 600px;
    border-radius: 0 0 var(--u3) var(--u3);
    margin-bottom: var(--u2);
}

section {
    display: flex;
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: center;
    gap: var(--u2);
    padding: var(--u3);
    text-align: center;
}

footer {
    display: flex;
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: center;
    gap: var(--u2);
    margin: 0 auto;
    padding: var(--u1);
    text-align: center;
    font-size: 0.75rem;
    line-height: 1rem;
    background-color: #fff;
}

h1,
h2,
h3,
h4,
h5,
h6,
[class^="btn-"] {
    font-family: "d-din-bold", "Arial Narrow", sans-serif;
    font-weight: 800;
    font-style: normal;
}

h1 {
    padding: 0 var(--u1);
    font-size: 3rem;
    line-height: var(--u5);
    text-align: center;
    color: var(--blue);
}

.logo {
    width: 300px;
    height: auto;
}

[class^="btn-"] {
    display: flex;
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: center;
    padding: var(--u1) var(--u2);
    border-radius: var(--u1);
    background-color: var(--blue);
    color: #fff;
    font-size: 1.25rem;
    line-height: 1.125rem;
    font-weight: 400;
    text-align: center;
    text-decoration: none;
    transition-property: background-color;
    transition-duration: 0.25s;
}

[class^="btn-"]:hover {
    background-color: var(--blue-l1);
}

section.links {
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: stretch;
    justify-content: space-evenly;
}

section.links a {
    flex-basis: 50%;
    flex-grow: 1;
    flex-shrink: 2;
}

section.links a img {
    max-width: 50%;
    min-width: 100px;
    height: auto;
}

section.links.vcl {
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
section.links.social {
    justify-content: space-evenly;
}

section.va a {
    flex-basis: auto;
    flex-grow: 0;
    flex-shrink: 1;
}
section.links.social a[class^="btn-"] {
    max-width: var(--u5);
    max-height: var(--u5);
    padding: 0px;
    flex-basis: var(--u5);
    flex-grow: 0;
    flex-shrink: 3;
    background-color: unset;
}

section.social a img {
    width: 100%;
    height: auto;
    max-width: var(--u5);
    min-width: var(--u4);
    max-height: var(--u5);
    min-height: var(--u4);
    object-fit: cover;
}

section.links a#vcl {
    border-radius: var(--u1);
    background-color: #fff;
    text-decoration: none;
}

section.links.vcl a img {
    max-width: 200px;
    min-width: 100px;
}

.btn-icon svg {
    flex-basis: 100%;
    flex-grow: 0;
    flex-shrink: 0;
    fill: var(--teal);
    transition: fill 0.25s;
}
.btn-icon:hover svg {
    fill: var(--teal-d1);
}

.btn-icon span {
    display: inline-block;
    visibility: hidden;
    width: 0;
    height: 0;
    overflow: hidden;
}

@media screen and (min-width: 481px) {
    .logo {
        width: 400px;
        height: auto;
    }

    h1 {
        font-size: 3.5rem;
        line-height: 3rem;
        padding: 0 var(--u2);
    }
}

@media screen and (min-width: 769px) {
}

@media screen and (min-width: 1025px) {
}

#opsnav {
    position: fixed;
    bottom: calc(0% + 60px);
    left: 0;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: var(--u1);
    width: 40px;
    padding: var(--u1);
    background-color: #fff;
    border-radius: 0 16px 16px 0;
    box-shadow: #00000033 4px 0px 8px;
}

#opsnav a {
    flex: 30px 0 0;
    width: 30px;
    height: 30px;
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: center;
    padding: var(--u1);
    border-radius: 50%;
    background-color: var(--red);
    color: #fff;
    font-size: 1rem;
    line-height: 1rem;
    font-weight: 800;
    text-decoration: none;
    transition: background-color border color 0.25s;
}
#opsnav a:hover {
    background-color: var(--red-d1);
}

#opsnav a.active {
    border: 4px solid var(--red);
    border-radius: 50% 0 50% 50%;
    background-color: #fff;
    color: var(--red);
}
#opsnav a.active:hover {
    border: 4px solid var(--red-d1);
    background-color: var(--tan);
    color: var(--red-d1);
}