/* ============================================================
   FirstStep · Group 12 — Material 3 (Material You) reveal.js theme
   Mirrors the website: dark M3 surfaces, tonal elevation,
   large rounded shapes, expressive primary/secondary/tertiary.
   ============================================================ */

@import url("https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;700;900&family=Roboto+Flex:opsz,wght@8..144,400..900&display=swap");

:root {
    /* ---- M3 dark color tokens (key colors) ---- */
    --md-primary: #9de81c; /* primary (tonal, dark scheme) */
    --md-on-primary: #06305f;
    --md-primary-container: #244b7a;
    --md-on-primary-container: #d6e3ff;

    --md-secondary: #f5bd4f; /* warm amber */
    --md-secondary-container: #5b4300;
    --md-on-secondary-container: #ffdf9e;

    --md-tertiary: #e6e3ec; /* purple */
    --md-tertiary-container: #4a2d77;
    --md-on-tertiary-container: #ecdcff;

    --md-green: #7ddc94;

    /* Neutral surfaces with tonal elevation (dark) */
    --md-surface: #111318;
    --md-surface-dim: #111318;
    --md-surface-bright: #373a40;
    --md-sc-lowest: #0c0e13;
    --md-sc-low: #191c20;
    --md-sc: #1d2024;
    --md-sc-high: #282a2f;
    --md-sc-highest: #33353a;

    --md-on-surface: #e2e2e9;
    --md-on-surface-variant: #c4c6cf;
    --md-outline: #8e9099;
    --md-outline-variant: #44474e;

    /* M3 shape scale */
    --md-shape-sm: 12px;
    --md-shape-md: 16px;
    --md-shape-lg: 24px;
    --md-shape-xl: 28px;

    /* M3 elevation (dark uses shadow + tonal surface) */
    --md-elev-1: 0 1px 2px rgba(0, 0, 0, .5), 0 1px 3px 1px rgba(0, 0, 0, .30);
    --md-elev-2: 0 1px 2px rgba(0, 0, 0, .55), 0 2px 6px 2px rgba(0, 0, 0, .30);
    --md-elev-3: 0 4px 8px 3px rgba(0, 0, 0, .30), 0 1px 3px rgba(0, 0, 0, .55);
}

/* ---------------------------------------------------------- */
.reveal {
    font-family: "Roboto Flex", "Roboto", "Inter", system-ui, sans-serif;
    color: var(--md-on-surface);
    font-size: 30px;
    font-weight: 400;
}

.reveal .slides {
    text-align: left;
}

.reveal .slides section {
    height: 100%;
}

.reveal .backgrounds {
    background: var(--md-surface);
}

/* M3 type scale */
.reveal h1, .reveal h2, .reveal h3, .reveal h4 {
    color: #fff;
    text-transform: none;
    letter-spacing: 0;
    font-weight: 800;
    margin-bottom: 0.4em;
    line-height: 1.12;
}

.reveal h1 {
    font-size: 2.4em;
}

.reveal h2 {
    font-size: 1.65em;
    margin-bottom: 1.5em;
}

.reveal h3 {
    font-size: 1.2em;
}

/* Section title — M3 headline with tonal accent underline */
.reveal h2.title-bar {
    display: inline-block;
    padding-bottom: 0.1em;
    border-bottom: 4px solid var(--md-primary);
}

/* Lists */
.reveal ul {
    display: block;
    margin-left: 1.1em;
}

.reveal li {
    margin: 0.3em 0;
    line-height: 1.36;
    color: var(--md-on-surface);
}

.reveal strong {
    color: #fff;
    font-weight: 700;
}

.reveal .muted {
    color: var(--md-on-surface-variant);
}

.reveal code {
    color: var(--md-secondary);
    background: var(--md-sc-low);
    padding: 1px 7px;
    border-radius: 6px;
}

/* M3 "assist chip" eyebrow / kicker */
.reveal .kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.5em;
    font-weight: 600;
    letter-spacing: 1.2px;
    text-transform: uppercase;
    color: var(--md-primary);
    background: color-mix(in srgb, var(--md-primary) 14%, transparent);
    border: 1px solid color-mix(in srgb, var(--md-primary) 38%, transparent);
    border-radius: 999px;
    padding: 7px 16px;
    margin-bottom: 0.7em;
}

/* Footer (M3 label-small) */
.reveal .footer {
    position: absolute;
    bottom: 14px;
    left: 26px;
    font-size: 0.46em;
    font-weight: 600;
    letter-spacing: 1px;
    color: var(--md-on-surface-variant);
}

.reveal .footer::before {
    content: "";
    display: inline-block;
    width: 9px;
    height: 9px;
    border-radius: 3px;
    background: var(--md-primary);
    margin-right: 8px;
    vertical-align: middle;
}

/* Two-column layout */
.cols {
    display: flex;
    gap: 36px;
    align-items: center;
}

.cols .col {
    flex: 1;
    min-width: 0;
}

.cols .col-shot {
    flex: 1.05;
}

/* ---- Screenshot frame: M3 large rounded surface ---- */
.shot {
    width: 100%;
    border-radius: var(--md-shape-lg);
    border: 1px solid var(--md-outline-variant);
    box-shadow: var(--md-elev-3);
}

.shot.tall {
    max-height: 600px;
    width: auto;
    display: block;
    margin: 0 auto;
}

/* Phone-ish framed device for theming pair */
.device {
    border-radius: var(--md-shape-lg);
    overflow: hidden;
    border: 1px solid var(--md-outline-variant);
    box-shadow: var(--md-elev-2);
}

.device img {
    display: block;
    width: 100%;
}

.device .cap {
    font-size: 0.5em;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--md-on-surface-variant);
    background: var(--md-sc);
    padding: 8px 14px;
}

/* ---- M3 chips ---- */
.chips {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 0.4em;
}

.chip {
    font-size: 0.58em;
    font-weight: 600;
    padding: 8px 16px;
    border-radius: 999px;
    background: var(--md-sc-high);
    border: 1px solid var(--md-outline-variant);
    color: var(--md-on-surface);
}

.chip.b {
    background: var(--md-primary-container);
    border-color: transparent;
    color: var(--md-on-primary-container);
}

.chip.a {
    background: var(--md-secondary-container);
    border-color: transparent;
    color: var(--md-on-secondary-container);
}

.chip.p {
    background: var(--md-tertiary-container);
    border-color: transparent;
    color: var(--md-on-tertiary-container);
}

.chip.g {
    background: #0f3d23;
    border-color: transparent;
    color: var(--md-green);
}

/* ---- M3 filled cards (with state layer on hover) ---- */
.grid3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.grid2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
}

.card {
    position: relative;
    background: var(--md-sc);
    border: 1px solid var(--md-outline-variant);
    border-radius: var(--md-shape-lg);
    padding: 20px 22px;
    transition: box-shadow .2s ease, transform .2s ease, background .2s ease;
    min-height: 4em;
}

.card:hover {
    box-shadow: var(--md-elev-2);
    background: var(--md-sc-high);
}

.card h3 {
    font-size: 0.92em;
    margin-bottom: 1.05em;
    color: #fff;
}

.card p, .card ul {
    font-size: 0.62em;
    color: var(--md-on-surface-variant);
    margin: 0;
}

.card .ico {
    font-size: 1.15em;
    margin-bottom: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: var(--md-shape-md);
    background: var(--md-primary-container);
    color: var(--md-on-primary-container);
}

.card.t .ico {
    background: var(--md-tertiary-container);
    color: var(--md-on-tertiary-container);
}

.card.s .ico {
    background: var(--md-secondary-container);
    color: var(--md-on-secondary-container);
}

.card.g .ico {
    background: #0f3d23;
    color: var(--md-green);
}

/* Title slide */
.title-slide {
    text-align: center;
}

.title-slide .brand {
    font-size: 3.7em;
    font-weight: 900;
    letter-spacing: -1px;
    background: var(--md-tertiary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.7em;
    margin-top: 0.7em;
}

.title-slide .tagline {
    color: var(--md-on-surface-variant);
    font-size: 1.0em;
    margin-top: 0.2em;
}

/* Stat numbers (M3 display) */
.stats {
    display: flex;
    gap: 40px;
}

.stat .num {
    font-size: 1.8em;
    font-weight: 900;
    color: var(--md-primary);
}

.stat .lbl {
    font-size: 0.5em;
    color: var(--md-on-surface-variant);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* code blocks */
.reveal pre {
    width: 100%;
    box-shadow: none;
    font-size: 0.5em;
}

.reveal pre code {
    border-radius: var(--md-shape-md);
    padding: 18px;
    max-height: 520px;
    background: var(--md-sc-lowest);
    border: 1px solid var(--md-outline-variant);
}

/* helpers */
.reveal .small {
    font-size: 0.68em;
}

.reveal .center {
    text-align: center;
}

.reveal em.note {
    color: var(--md-secondary);
    font-style: normal;
}

/* M3 progress bar + controls tint */
.reveal .progress {
    color: var(--md-primary);
    height: 5px;
}

.reveal .controls {
    color: var(--md-primary);
}

.reveal .slide-number {
    background: color-mix(in srgb, var(--md-sc) 75%, transparent);
    color: var(--md-on-surface-variant);
    border-radius: 8px;
}

/* M3 segmented buttons (used on theming slide) */
.segmented {
    display: inline-flex;
    border: 1px solid var(--md-outline);
    border-radius: 999px;
    overflow: hidden;
}

.segmented span {
    font-size: 0.55em;
    font-weight: 600;
    padding: 8px 18px;
    color: var(--md-on-surface-variant);
}

.segmented span.on {
    background: var(--md-primary-container);
    color: var(--md-on-primary-container);
}

/* ---- Architecture diagram (How It Fits Together) ---- */
.arch {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin-top: 1.1em;
}

.arch-col {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* A node: filled tonal pill card with a leading accent dot */
.arch-node {
    position: relative;
    display: flex;
    align-items: center;
    gap: 14px;
    --accent: var(--md-outline);
    background: var(--accent);
    border: 1px solid color-mix(in srgb, var(--accent) 70%, #000);
    border-radius: var(--md-shape-md);
    padding: 14px 20px;
    min-width: 230px;
    box-shadow: var(--md-elev-1);
    transition: box-shadow .2s ease, transform .2s ease, background .2s ease;
}

.arch-node:hover {
    box-shadow: var(--md-elev-3);
    transform: translateY(-2px);
    background: color-mix(in srgb, var(--accent) 88%, #fff);
}

.arch-node .dot {
    flex: 0 0 auto;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(0, 0, 0, .35);
    box-shadow: 0 0 0 5px rgba(0, 0, 0, .12);
}

.arch-node .nt h3 {
    font-size: 0.78em;
    margin: 0 0 0.15em;
    color: #0a0a0a;
    line-height: 1.1;
}

.arch-node .nt p {
    font-size: 0.52em;
    margin: 0;
    color: rgba(0, 0, 0, .7);
}

/* Accent colors per tier (fills the whole node) */
.arch-node.primary { --accent: var(--md-primary); }
.arch-node.blue    { --accent: #6aa6ff; }
.arch-node.green   { --accent: var(--md-green); }
.arch-node.amber   { --accent: var(--md-secondary); }
.arch-node.purple  { --accent: #c79dff; }

/* Connector with label + arrow line */
.arch-link {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 110px;
    padding: 0 4px;
}

.arch-link .lbl {
    font-size: 0.42em;
    font-weight: 600;
    letter-spacing: .8px;
    text-transform: uppercase;
    color: var(--md-on-surface-variant);
    margin-bottom: 6px;
    white-space: nowrap;
}

.arch-link .line {
    position: relative;
    width: 100%;
    height: 2px;
    background: var(--md-outline);
}

.arch-link .line::after {
    content: "";
    position: absolute;
    right: -1px;
    top: 50%;
    transform: translateY(-50%);
    border-style: solid;
    border-width: 5px 0 5px 8px;
    border-color: transparent transparent transparent var(--md-outline);
}

/* Fan-out connector (one source → three services) */
.arch-link.fan .line {
    background: linear-gradient(90deg, var(--md-outline), var(--md-outline-variant));
}

/* Feature row with leading M3 icon */
.frow {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    margin: 0.5em 0;
}

.frow .fic {
    flex: 0 0 auto;
    width: 44px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--md-shape-md);
    background: var(--md-sc-high);
    font-size: 0.8em;
}

.frow .ft {
    font-size: 0.72em;
    line-height: 1.3;
}

.frow .ft b {
    color: #fff;
}

/* ---- Meet the Team: members with distinct Material 3 shapes ---- */
.members {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 26px 34px;
    margin-top: 0.9em;
}

.member {
    margin: 0;
    width: 150px;
    text-align: center;
    --accent: var(--md-primary);
}

/* Photo holder — also the placeholder when no image is set */
.member .m-photo {
    position: relative;
    width: 150px;
    height: 150px;
    margin: 0 auto 1.5em 0;
    background: var(--md-sc-high);
    box-shadow: var(--md-elev-2);
    transition: transform .2s ease, box-shadow .2s ease;
    /* some radius on the holder + clip the image to it */
    border-radius: var(--md-shape-lg);
    overflow: hidden;
    /* tonal accent ring drawn behind via outline */
    /*outline: 4px solid color-mix(in srgb, var(--accent) 70%, transparent);*/
    outline-offset: 4px;
}

.member:hover .m-photo {
    transform: translateY(-4px);
    box-shadow: var(--md-elev-3);
}

.member .m-photo img {
    scale: 1.5;
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

/* Material 3 expressive shapes — one per member (corners softened with some radius) */
.shape-circle   { border-radius: 50%; }
.shape-rounded  { border-radius: var(--md-shape-xl); }
.shape-blob     { border-radius: 62% 38% 47% 53% / 55% 47% 53% 45%; }
.shape-hexagon  { clip-path: polygon(20.5% 12.3%, 34% 4%, 66% 4%, 79.5% 12.3%, 95.5% 41.7%, 95.5% 58.3%, 79.5% 87.7%, 66% 96%, 34% 96%, 20.5% 87.7%, 4.5% 58.3%, 4.5% 41.7%); outline: none; }
.shape-diamond  { clip-path: polygon(41% 9%, 59% 9%, 91% 41%, 91% 59%, 59% 91%, 41% 91%, 9% 59%, 9% 41%); outline: none; }
.shape-pentagon { clip-path: polygon(41% 6.8%, 59% 6.8%, 91% 31.2%, 96.8% 49.2%, 85.2% 88.8%, 70.5% 100%, 29.5% 100%, 14.8% 88.8%, 3.2% 49.2%, 9% 31.2%); outline: none; }
.shape-octagon  { clip-path: polygon(24.6% 5.4%, 37.2% 0%, 62.8% 0%, 75.4% 5.4%, 94.6% 24.6%, 100% 37.2%, 100% 62.8%, 94.6% 75.4%, 75.4% 94.6%, 62.8% 100%, 37.2% 100%, 24.6% 94.6%, 5.4% 75.4%, 0% 62.8%, 0% 37.2%, 5.4% 24.6%); outline: none; }

/* Clipped shapes: drop the inset so the image fills the whole shape */
.member .m-photo.shape-hexagon,
.member .m-photo.shape-diamond,
.member .m-photo.shape-pentagon,
.member .m-photo.shape-octagon {
    background: color-mix(in srgb, var(--accent) 28%, var(--md-sc-high));
    padding: 0;
}

.member figcaption {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.member .m-name {
    color: #fff;
    font-weight: 700;
    font-size: 0.62em;
}

.member .m-role {
    color: var(--md-on-surface-variant);
    font-size: 0.46em;
    letter-spacing: .6px;
    text-transform: uppercase;
    margin-top: 2px;
}

/* Accent rotation across the 7 members */
.member:nth-child(1) { --accent: var(--md-primary); }
.member:nth-child(2) { --accent: #6aa6ff; }
.member:nth-child(3) { --accent: var(--md-green); }
.member:nth-child(4) { --accent: var(--md-secondary); }
.member:nth-child(5) { --accent: #c79dff; }
.member:nth-child(6) { --accent: var(--md-tertiary); }
.member:nth-child(7) { --accent: #ff8a65; }