/* Presentation page — MECM Packaging Manager */
:root,
[data-bs-theme="light"] {
    --w-ink: #0c1220;
    --w-ink-soft: #151d2e;
    --w-paper: #f3f5f8;
    --w-paper-alt: #e8edf4;
    --w-text: #e8eef8;
    --w-muted: #9aabc4;
    --w-accent: #3d8bfd;
    --w-accent-deep: #245fd4;
    --w-amber: #d4a017;
    --w-section-text: #1a2332;
    --w-section-muted: #5a6578;
    --w-line: rgba(61, 139, 253, 0.35);
    --w-btn-ghost-border: rgba(232, 238, 248, 0.35);
    --w-btn-ghost-text: #e8eef8;
    --w-footer: #8b97a8;
}

[data-bs-theme="dark"] {
    --w-paper: #0b1017;
    --w-paper-alt: #121820;
    --w-section-text: #e8edf5;
    --w-section-muted: #9aa4b2;
    --w-footer: #7a8799;
    color-scheme: dark;
}

* { box-sizing: border-box; }

.welcome-body {
    margin: 0;
    min-height: 100vh;
    font-family: "IBM Plex Sans", sans-serif;
    color: var(--w-section-text);
    background: var(--w-paper);
    -webkit-font-smoothing: antialiased;
}

.welcome-theme {
    position: relative;
    top: auto;
    right: auto;
    z-index: 1;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    background: rgba(12, 18, 32, 0.55);
    color: #e8eef8;
    backdrop-filter: blur(8px);
    display: grid;
    place-items: center;
    cursor: pointer;
}

.welcome-top {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 40;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.welcome-lang {
    display: inline-flex;
    align-items: center;
    min-height: 2.5rem;
    padding: 0 0.85rem;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    background: rgba(12, 18, 32, 0.55);
    color: #e8eef8;
    backdrop-filter: blur(8px);
    font-family: "Sora", sans-serif;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-decoration: none;
    text-transform: uppercase;
}

.welcome-lang:hover {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.4);
}

[data-bs-theme="light"] .welcome-theme-sun,
[data-bs-theme="dark"] .welcome-theme-moon { display: none; }

/* —— Hero —— */
.welcome-hero {
    position: relative;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: flex-end;
    overflow: hidden;
    color: var(--w-text);
    background: var(--w-ink);
}

.welcome-hero-visual {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.welcome-pipeline {
    width: 100%;
    height: 100%;
    display: block;
    opacity: 0.95;
}

.welcome-hero-haze {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(105deg, rgba(12, 18, 32, 0.92) 0%, rgba(12, 18, 32, 0.72) 42%, rgba(12, 18, 32, 0.35) 70%, rgba(12, 18, 32, 0.55) 100%),
        radial-gradient(ellipse 70% 50% at 70% 40%, rgba(61, 139, 253, 0.22), transparent 60%);
    pointer-events: none;
}

.welcome-hero-inner {
    position: relative;
    z-index: 1;
    width: min(40rem, calc(100% - 2.5rem));
    margin: 0 0 clamp(2.5rem, 8vh, 5rem) clamp(1.25rem, 5vw, 4rem);
    animation: welcome-rise 0.9s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.welcome-brand {
    margin: 0 0 0.85rem;
}

.welcome-logo {
    display: block;
    width: min(28rem, 100%);
    height: auto;
    background: transparent;
}

.welcome-kicker {
    margin: 0 0 1rem;
    display: inline-block;
    padding: 0.2rem 0.65rem;
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #c9d8ff;
}

.welcome-headline {
    margin: 0 0 0.85rem;
    font-family: "Sora", sans-serif;
    font-weight: 600;
    font-size: clamp(1.35rem, 2.8vw, 1.85rem);
    line-height: 1.25;
    letter-spacing: -0.02em;
    color: #d7e4ff;
    max-width: 22ch;
}

.welcome-lead {
    margin: 0 0 1.75rem;
    font-size: 1.05rem;
    line-height: 1.55;
    color: var(--w-muted);
    max-width: 36ch;
}

.welcome-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem 1rem;
}

.welcome-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.75rem;
    padding: 0.65rem 1.25rem;
    border-radius: 0.4rem;
    font-family: "Sora", sans-serif;
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.welcome-btn:hover { transform: translateY(-1px); }

.welcome-btn-primary {
    background: var(--w-accent);
    color: #fff;
    border: 1px solid transparent;
}

.welcome-btn-primary:hover {
    background: var(--w-accent-deep);
    color: #fff;
}

.welcome-btn-ghost {
    background: transparent;
    color: var(--w-btn-ghost-text);
    border: 1px solid var(--w-btn-ghost-border);
}

.welcome-section .welcome-btn-ghost {
    --w-btn-ghost-border: rgba(26, 35, 50, 0.25);
    --w-btn-ghost-text: var(--w-section-text);
}

[data-bs-theme="dark"] .welcome-section .welcome-btn-ghost {
    --w-btn-ghost-border: rgba(232, 237, 245, 0.28);
    --w-btn-ghost-text: var(--w-section-text);
}

/* —— Sections —— */
.welcome-section {
    padding: clamp(3.5rem, 9vw, 6rem) clamp(1.25rem, 5vw, 4rem);
    background: var(--w-paper);
}

.welcome-section-alt { background: var(--w-paper-alt); }

.welcome-section-inner {
    max-width: 42rem;
}

.welcome-section-inner-wide {
    max-width: 52rem;
}

.welcome-section-inner-modules {
    max-width: 68rem;
}

.welcome-section-inner-demo {
    max-width: min(58rem, 100%);
}

.welcome-section h2 {
    margin: 0 0 1rem;
    font-family: "Sora", sans-serif;
    font-weight: 700;
    font-size: clamp(1.6rem, 3vw, 2.1rem);
    letter-spacing: -0.03em;
    color: var(--w-section-text);
}

.welcome-section p,
.welcome-steps p,
.welcome-modules p,
.welcome-highlights p {
    margin: 0;
    font-size: 1.05rem;
    line-height: 1.65;
    color: var(--w-section-muted);
}

.welcome-section strong { color: var(--w-section-text); font-weight: 600; }

.welcome-section-lead {
    margin-bottom: 2rem !important;
}

.welcome-cycle-block {
    margin-top: 2.75rem;
}

.welcome-cycle-block:first-of-type {
    margin-top: 0;
}

.welcome-cycle-block > h3 {
    margin: 0 0 0.4rem;
    font-family: "Sora", sans-serif;
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--w-section-text);
}

.welcome-cycle-lead {
    margin: 0 0 1.25rem;
    color: var(--w-section-muted);
    max-width: 44rem;
}

.welcome-cycle-diagram {
    margin: 0 0 2.5rem;
    padding: 0;
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid rgba(90, 101, 120, 0.22);
    background: #0c1220;
}

.welcome-cycle-diagram img {
    display: block;
    width: 100%;
    height: auto;
    vertical-align: middle;
}

.welcome-modules {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(16.5rem, 1fr));
    gap: 1rem;
}

.welcome-module {
    margin: 0;
    padding: 1.25rem 1.3rem 1.35rem;
    border: 1px solid rgba(90, 101, 120, 0.18);
    border-radius: 14px;
    background: var(--w-paper);
    box-shadow: none;
}

.welcome-modules h3 {
    margin: 0 0 0.5rem;
    font-family: "Sora", sans-serif;
    font-size: 1.08rem;
    font-weight: 600;
    color: var(--w-section-text);
}

.welcome-modules p {
    max-width: none;
}

.welcome-highlights {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
    gap: 1rem 1.25rem;
}

.welcome-highlights li {
    padding: 1.15rem 1.2rem;
    border: 1px solid rgba(90, 101, 120, 0.18);
    border-radius: 12px;
    background: var(--w-paper);
}

.welcome-highlights h3 {
    margin: 0 0 0.4rem;
    font-family: "Sora", sans-serif;
    font-size: 1.08rem;
    font-weight: 600;
    color: var(--w-section-text);
}

.welcome-rail {
    list-style: none;
    margin: 0;
    padding: 0;
    border-left: 2px solid var(--w-line);
}

.welcome-rail li {
    position: relative;
    padding: 0 0 1.75rem 1.5rem;
}

.welcome-rail li:last-child { padding-bottom: 0; }

.welcome-rail li::before {
    content: "";
    position: absolute;
    left: -0.4rem;
    top: 0.35rem;
    width: 0.65rem;
    height: 0.65rem;
    border-radius: 50%;
    background: var(--w-accent);
    box-shadow: 0 0 0 4px rgba(61, 139, 253, 0.15);
}

.welcome-rail-label {
    display: block;
    font-family: "Sora", sans-serif;
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--w-section-text);
    margin-bottom: 0.25rem;
}

.welcome-rail-text {
    display: block;
    color: var(--w-section-muted);
    line-height: 1.55;
}

.welcome-steps {
    list-style: none;
    margin: 0;
    padding: 0;
    counter-reset: wstep;
}

.welcome-steps li {
    counter-increment: wstep;
    padding: 1.25rem 0 1.25rem 3.25rem;
    position: relative;
    border-top: 1px solid rgba(90, 101, 120, 0.18);
}

.welcome-steps li:last-child { border-bottom: 1px solid rgba(90, 101, 120, 0.18); }

.welcome-steps li::before {
    content: counter(wstep, decimal-leading-zero);
    position: absolute;
    left: 0;
    top: 1.35rem;
    font-family: "Sora", sans-serif;
    font-weight: 700;
    font-size: 1rem;
    color: var(--w-accent);
    letter-spacing: 0.04em;
}

.welcome-steps h3,
.welcome-steps h4 {
    margin: 0 0 0.35rem;
    font-family: "Sora", sans-serif;
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--w-section-text);
}

.welcome-steps em { font-style: normal; color: var(--w-section-text); font-weight: 500; }

.welcome-section .welcome-cta { margin-top: 1.75rem; }

.welcome-demo {
    padding: 1.35rem 1.4rem;
    border: 1px solid rgba(90, 101, 120, 0.22);
    border-radius: 12px;
    background: var(--w-paper);
}

.welcome-demo-grid {
    display: grid;
    gap: 1rem 2rem;
    margin: 0;
}

@media (min-width: 720px) {
    .welcome-demo-grid {
        grid-template-columns: 1fr 1fr;
    }

    .welcome-demo-grid > div:first-child {
        grid-column: 1 / -1;
    }
}

.welcome-demo-grid dt {
    margin: 0 0 0.35rem;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--w-section-muted);
}

.welcome-demo-grid dd {
    margin: 0;
    font-size: 1rem;
    line-height: 1.45;
    color: var(--w-section-text);
}

.welcome-demo-grid code {
    display: inline-block;
    max-width: 100%;
    padding: 0.15rem 0.4rem;
    border-radius: 0.35rem;
    background: rgba(61, 139, 253, 0.1);
    font-family: "IBM Plex Mono", "Consolas", monospace;
    font-size: 0.88em;
    white-space: nowrap;
}

.welcome-demo-grid a {
    display: inline-block;
    max-width: 100%;
    color: var(--w-accent-deep);
    text-decoration: underline;
    text-underline-offset: 0.15em;
    white-space: nowrap;
}

.welcome-demo-note {
    margin: 1rem 0 0;
    font-size: 0.92rem;
    color: var(--w-section-muted);
}

.welcome-footer {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem 0.5rem;
    align-items: center;
    padding: 1.5rem clamp(1.25rem, 5vw, 4rem) 2.5rem;
    font-size: 0.85rem;
    color: var(--w-footer);
    background: var(--w-paper);
}

.welcome-footer-mark {
    width: 1.35rem;
    height: 1.35rem;
    border-radius: 0.28rem;
    object-fit: cover;
}

.welcome-footer-sep { opacity: 0.5; }

.welcome-footer a {
    color: inherit;
    text-decoration: underline;
    text-underline-offset: 0.15em;
}

.welcome-footer a:hover { opacity: 0.85; }

/* —— Motion —— */
@keyframes welcome-rise {
    from { opacity: 0; transform: translateY(1.25rem); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes welcome-dash {
    to { stroke-dashoffset: -240; }
}

@keyframes welcome-pulse {
    0%, 100% { opacity: 0.35; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.35); }
}

.welcome-pipeline-flow {
    stroke-dasharray: 12 16;
    animation: welcome-dash 4.5s linear infinite;
}

.welcome-pipeline-flow-b {
    animation-duration: 7s;
    animation-direction: reverse;
}

.welcome-pulse circle {
    transform-box: fill-box;
    transform-origin: center;
    animation: welcome-pulse 2.4s ease-in-out infinite;
}

.welcome-pulse circle:nth-child(2) { animation-delay: 0.4s; }
.welcome-pulse circle:nth-child(3) { animation-delay: 0.8s; }
.welcome-pulse circle:nth-child(4) { animation-delay: 1.2s; }

.welcome-reveal {
    opacity: 0;
    transform: translateY(1.5rem);
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.welcome-reveal.is-in {
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: reduce) {
    .welcome-hero-inner,
    .welcome-pipeline-flow,
    .welcome-pulse circle,
    .welcome-reveal {
        animation: none !important;
        transition: none !important;
        opacity: 1 !important;
        transform: none !important;
    }
}

@media (max-width: 640px) {
    .welcome-hero-inner {
        margin-left: 1.25rem;
        margin-right: 1.25rem;
        width: auto;
    }

    .welcome-btn { width: 100%; }
}