:root {
    --paper: #2f2e2e;
    --ink: #f5f2eb;
    --muted: rgba(245, 242, 235, .62);
    --gold: #a8894f;
    --font-main: "Roboto Slab", Georgia, serif;
}

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

html,
body {
    margin: 0;
    min-height: 100%;
}

body {
    overflow: hidden;
    color: var(--ink);
    background:
        linear-gradient(rgba(47, 46, 46, .18), rgba(47, 46, 46, .18)),
        url("assets/images/studio-vision-v2.png") center / cover no-repeat fixed;
    font-family: var(--font-main);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

a {
    color: inherit;
    text-decoration: none;
}

.intro-page {
    position: relative;
    display: flex;
    justify-content: center;
    min-height: 100svh;
    padding: clamp(4rem, 10vh, 7rem) 1.5rem 6rem;
    overflow: hidden;
    isolation: isolate;
    background: rgba(47, 46, 46, .78);
    -webkit-backdrop-filter: blur(4px) saturate(.72);
    backdrop-filter: blur(4px) saturate(.72);
}

.intro-network {
    position: absolute;
    z-index: 0;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: .7;
    pointer-events: none;
}

.network-line {
    fill: none;
    stroke: rgba(168, 137, 79, .22);
    stroke-width: .7;
    stroke-dasharray: 100;
    stroke-dashoffset: 100;
    animation: network-draw 2.8s cubic-bezier(.22, 1, .36, 1) forwards;
}

.line-two { animation-delay: .35s; }
.line-three { animation-delay: .7s; }

.network-point {
    fill: var(--gold);
    opacity: 0;
    filter: drop-shadow(0 0 9px rgba(168, 137, 79, .8));
    transform-box: fill-box;
    transform-origin: center;
    animation: network-point 2.2s ease 2.25s infinite;
}

.point-two { animation-delay: 2.65s; }
.point-three { animation-delay: 3.05s; }

.intro-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: min(100%, 760px);
    text-align: center;
}

.intro-logo-mark {
    position: relative;
    width: min(clamp(350px, 47vw, 620px), 60vh);
    opacity: 0;
    filter: blur(7px) drop-shadow(0 18px 32px rgba(0, 0, 0, .18));
    transform: translateY(16px) scale(.94);
    animation: logo-presence 2.4s cubic-bezier(.22, 1, .36, 1) .3s forwards;
}

.intro-logo-mark::after {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        105deg,
        transparent 42%,
        rgba(255, 238, 190, .22) 46%,
        #fff6d8 50%,
        rgba(255, 220, 125, .28) 54%,
        transparent 58%
    );
    background-position: 135% center;
    background-repeat: no-repeat;
    background-size: 280% 100%;
    content: "";
    opacity: 0;
    pointer-events: none;
    filter: drop-shadow(0 0 12px rgba(255, 225, 145, .75));
    -webkit-mask: url("assets/images/logo-rr-design-studio.png") center / contain no-repeat;
    mask: url("assets/images/logo-rr-design-studio.png") center / contain no-repeat;
    animation: logo-light-pass 2.15s cubic-bezier(.65, 0, .35, 1) 2.45s forwards;
}

.intro-logo {
    width: 100%;
    height: auto;
}

.intro-title {
    margin: clamp(1.2rem, 2.6vh, 2rem) 0 0;
    color: rgba(213, 178, 108, .88);
    font-size: clamp(.95rem, 1.25vw, 1.22rem);
    font-weight: 500;
    line-height: 1.4;
    letter-spacing: .25em;
    text-transform: uppercase;
    opacity: 1;
}

.intro-line {
    display: block;
}

.word {
    display: inline-block;
    opacity: 0;
    transform: translateY(18px);
    filter: blur(7px);
    animation:
        word-entry .95s cubic-bezier(.22, 1, .36, 1)
        calc(.6s + var(--i) * .18s) forwards,
        word-wave 1.15s cubic-bezier(.22, 1, .36, 1)
        calc(4.05s + var(--i) * .055s) both;
}

.intro-services {
    position: relative;
    display: grid;
    gap: .55rem;
    width: min(100%, 440px);
    margin-top: 1.3rem;
    padding-block: 1.15rem;
}

.intro-services::before {
    position: absolute;
    top: 0;
    left: 50%;
    width: 70px;
    height: 1px;
    background: var(--gold);
    content: "";
    transform: translateX(-50%) scaleX(0);
    animation: service-rule 1.2s cubic-bezier(.22, 1, .36, 1) 3.8s forwards;
}

.intro-service {
    color: rgba(197, 164, 101, .78);
    font-size: clamp(.74rem, .9vw, .9rem);
    font-weight: 400;
    letter-spacing: .17em;
    line-height: 1.6;
    text-transform: uppercase;
    opacity: 0;
    filter: blur(7px);
    transform: translateY(14px);
    animation: service-entry 1s cubic-bezier(.22, 1, .36, 1) calc(2.2s + var(--i) * .38s) forwards;
}

.intro-languages {
    position: absolute;
    bottom: clamp(4.4rem, 7vh, 5.2rem);
    left: 50%;
    display: flex;
    align-items: center;
    gap: 2.5rem;
    font-size: .78rem;
    font-weight: 400;
    letter-spacing: .16em;
    text-transform: uppercase;
    opacity: 0;
    transform: translate(-50%, 10px);
    animation: languages-entry 1.1s ease 4.7s forwards;
}

.intro-languages a {
    position: relative;
    display: flex;
    align-items: baseline;
    gap: .55rem;
    padding: .8rem 1rem;
    border: 1px solid rgba(168, 137, 79, .38);
    color: var(--muted);
    transition: color 250ms ease, border-color 250ms ease, background 250ms ease, transform 250ms ease;
}

.language-flag {
    width: 22px;
    height: 15px;
    border-radius: 1px;
    box-shadow: 0 0 0 1px rgba(25, 25, 25, .12);
    object-fit: cover;
}

.intro-languages a::after {
    position: absolute;
    right: 0;
    bottom: .4rem;
    left: 0;
    height: 1px;
    background: var(--gold);
    content: "";
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 350ms cubic-bezier(.22, 1, .36, 1);
}

.intro-languages strong {
    color: var(--ink);
    font-weight: 500;
}

.intro-languages a:hover,
.intro-languages a:focus-visible {
    color: var(--gold);
    border-color: var(--gold);
    background: rgba(168, 137, 79, .09);
    transform: translateY(-2px);
}

.intro-languages a:hover::after,
.intro-languages a:focus-visible::after {
    transform: scaleX(1);
    transform-origin: left;
}

.intro-languages a:focus-visible {
    outline: 1px solid var(--gold);
    outline-offset: 5px;
}

.intro-footer {
    position: absolute;
    bottom: 1.7rem;
    left: 50%;
    opacity: 0;
    transform: translateX(-50%);
    animation: fade-in 1s ease 5s forwards;
    text-align: center;
    z-index: 1;
}

.intro-footer p {
    margin: 0;
    color: var(--muted);
    font-size: .62rem;
    letter-spacing: .16em;
    text-transform: uppercase;
    white-space: nowrap;
}

.intro-footer p + p {
    margin-top: .45rem;
    color: var(--gold);
}

@keyframes logo-presence {
    to {
        opacity: 1;
        filter: blur(0) drop-shadow(0 20px 38px rgba(0, 0, 0, .2));
        transform: none;
    }
}

@keyframes logo-light-pass {
    0% { opacity: 0; background-position: 135% center; }
    14%, 82% { opacity: 1; }
    100% { opacity: 0; background-position: -35% center; }
}

@keyframes network-draw {
    to { stroke-dashoffset: 0; }
}

@keyframes network-point {
    0%, 100% { opacity: .35; transform: scale(.75); }
    50% { opacity: 1; transform: scale(1.8); }
}

@keyframes service-entry {
    to { opacity: 1; filter: blur(0); transform: none; }
}

@keyframes service-rule {
    to { transform: translateX(-50%) scaleX(1); }
}

@keyframes word-entry {
    from {
        opacity: 0;
        transform: translateY(18px);
        filter: blur(7px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
        filter: blur(0);
    }
}

@keyframes word-wave {
    0%,
    100% {
        color: inherit;
        text-shadow: none;
        transform: translateY(0);
    }

    45% {
        color: var(--gold);
        text-shadow: 0 5px 22px rgba(168, 137, 79, .24);
        transform: translateY(-3px);
    }
}

@keyframes languages-entry {
    from {
        opacity: 0;
        transform: translate(-50%, 10px);
    }

    to {
        opacity: 1;
        transform: translate(-50%, 0);
    }
}

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

    to {
        opacity: 1;
    }
}

@media (max-width: 600px) {
    body {
        overflow: auto;
    }

    .intro-page {
        padding-top: clamp(4rem, 11vh, 6rem);
        padding-bottom: 9rem;
    }

    .intro-logo-mark {
        width: min(88vw, 440px);
    }

    .intro-title {
        font-size: .92rem;
    }

    .intro-services {
        width: min(88vw, 360px);
    }

    .intro-languages {
        position: fixed;
        bottom: 3.35rem;
        gap: 1rem;
    }

    .intro-languages a {
        padding: .7rem .85rem;
    }

    .intro-footer {
        bottom: .65rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        animation-duration: .01ms !important;
        animation-delay: 0ms !important;
    }
}