09Lock-on button, scan input

The button's corner brackets snap inward and lock on press, and the input grows an amber underline glow that spreads like a scan on focus.

Best forForm submit buttons, email inputs

브래킷 스냅스캔 포커스 글로우깜빡이는 캐럿

<main class="stage">
  <form class="formhud is-demo">
    <button class="formhud__btn" type="button">
      <span class="formhud__corner formhud__corner--tl" aria-hidden="true"></span>
      <span class="formhud__corner formhud__corner--tr" aria-hidden="true"></span>
      <span class="formhud__corner formhud__corner--bl" aria-hidden="true"></span>
      <span class="formhud__corner formhud__corner--br" aria-hidden="true"></span>
      Lock on
    </button>
    <label class="formhud__field">
      <input class="formhud__input" type="email" placeholder="Email address" readonly>
      <span class="formhud__caret" aria-hidden="true"></span>
    </label>
  </form>
</main>

@use "../../../../site/static/demo-tokens" as *;

$duration: $dur-loop;     // 버튼 스냅 + 입력창 포커스 글로우 한 주기
$easing: $ease-pop;       // 스냅이 튕기는 곡선
$color: $stage-yellow;    // 호박색 터미널 강조색

@include stage($stage-ink);

.formhud {
  display: flex;
  flex-direction: column;
  gap: $sp-4;
  width: clamp(220px, 78vw, 300px);
}

.formhud__btn {
  position: relative;
  box-sizing: border-box;
  border: 1px solid $color;
  border-radius: $r-control;
  background: rgba($color, .14);
  color: $color;
  padding: $sp-3 $sp-5;
  font-weight: 700;
  font-size: clamp(12px, 2.8vw, 13px);
  line-height: 1;
  font-family: inherit;
  letter-spacing: .02em;
  animation: btnSnap $duration $easing infinite;
}
@keyframes btnSnap {
  0%, 55%, 100% { transform: scale(1); }
  75%           { transform: scale(.97); }
}

.formhud__corner {
  position: absolute;
  width: 10px;
  height: 10px;
  pointer-events: none;
  border-color: $color;
  border-style: solid;
  border-width: 0;
}
.formhud__corner--tl { top: $sp-1; left: $sp-1; border-top-width: 2px; border-left-width: 2px; animation: snapTl $duration $easing infinite; }
.formhud__corner--tr { top: $sp-1; right: $sp-1; border-top-width: 2px; border-right-width: 2px; animation: snapTr $duration $easing infinite; }
.formhud__corner--bl { bottom: $sp-1; left: $sp-1; border-bottom-width: 2px; border-left-width: 2px; animation: snapBl $duration $easing infinite; }
.formhud__corner--br { bottom: $sp-1; right: $sp-1; border-bottom-width: 2px; border-right-width: 2px; animation: snapBr $duration $easing infinite; }
@keyframes snapTl { 0%, 55%, 100% { transform: translate(0, 0); } 75% { transform: translate(3px, 3px); } }
@keyframes snapTr { 0%, 55%, 100% { transform: translate(0, 0); } 75% { transform: translate(-3px, 3px); } }
@keyframes snapBl { 0%, 55%, 100% { transform: translate(0, 0); } 75% { transform: translate(3px, -3px); } }
@keyframes snapBr { 0%, 55%, 100% { transform: translate(0, 0); } 75% { transform: translate(-3px, -3px); } }

.formhud__field {
  position: relative;
  display: block;
  border-radius: $r-sm;
  background: $subject-ink;
  box-shadow: 0 1px 0 0 rgba($color, .4);
  animation: focusGlow $duration $easing infinite;
}
@keyframes focusGlow {
  0%, 55%, 100% { box-shadow: 0 1px 0 0 rgba($color, .4); }
  75%           { box-shadow: 0 1px 0 0 rgba($color, .9), 0 0 0 3px rgba($color, .25), 0 0 20px rgba($color, .35); }
}
.formhud__input {
  box-sizing: border-box;
  width: 100%;
  border: 0;
  background: transparent;
  padding: $sp-3 $sp-4;
  color: $subject-cream;
  font-weight: 500;
  font-size: clamp(12px, 2.8vw, 13px);
  line-height: 1;
  font-family: inherit;
  outline: none;
}
.formhud__input::placeholder {
  color: rgba($subject-cream, .45);
}
.formhud__caret {
  position: absolute;
  left: $sp-4;
  top: 50%;
  width: 2px;
  height: 14px;
  transform: translateY(-50%);
  background: $color;
  animation: blink $dur-loop steps(1) infinite;
}
@keyframes blink {
  0%, 49%   { opacity: 1; }
  50%, 100% { opacity: .2; }
}

@media (prefers-reduced-motion: reduce) {
  .formhud__btn, .formhud__corner, .formhud__field, .formhud__caret {
    animation: none !important;
  }
  .formhud__btn { transform: scale(1); }
  .formhud__corner { transform: translate(0, 0); }
  .formhud__field { box-shadow: 0 1px 0 0 rgba($color, .4); }
  .formhud__caret { opacity: 1; }
}

html, body {
  margin: 0;
  overflow: hidden;
}

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #17141a;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.formhud {
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: clamp(220px, 78vw, 300px);
}

.formhud__btn {
  position: relative;
  box-sizing: border-box;
  border: 1px solid #ffd23f;
  border-radius: 12px;
  background: rgba(255, 210, 63, 0.14);
  color: #ffd23f;
  padding: 12px 20px;
  font-weight: 700;
  font-size: clamp(12px, 2.8vw, 13px);
  line-height: 1;
  font-family: inherit;
  letter-spacing: 0.02em;
  animation: btnSnap 2s cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
}

@keyframes btnSnap {
  0%, 55%, 100% {
    transform: scale(1);
  }
  75% {
    transform: scale(0.97);
  }
}
.formhud__corner {
  position: absolute;
  width: 10px;
  height: 10px;
  pointer-events: none;
  border-color: #ffd23f;
  border-style: solid;
  border-width: 0;
}

.formhud__corner--tl {
  top: 4px;
  left: 4px;
  border-top-width: 2px;
  border-left-width: 2px;
  animation: snapTl 2s cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
}

.formhud__corner--tr {
  top: 4px;
  right: 4px;
  border-top-width: 2px;
  border-right-width: 2px;
  animation: snapTr 2s cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
}

.formhud__corner--bl {
  bottom: 4px;
  left: 4px;
  border-bottom-width: 2px;
  border-left-width: 2px;
  animation: snapBl 2s cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
}

.formhud__corner--br {
  bottom: 4px;
  right: 4px;
  border-bottom-width: 2px;
  border-right-width: 2px;
  animation: snapBr 2s cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
}

@keyframes snapTl {
  0%, 55%, 100% {
    transform: translate(0, 0);
  }
  75% {
    transform: translate(3px, 3px);
  }
}
@keyframes snapTr {
  0%, 55%, 100% {
    transform: translate(0, 0);
  }
  75% {
    transform: translate(-3px, 3px);
  }
}
@keyframes snapBl {
  0%, 55%, 100% {
    transform: translate(0, 0);
  }
  75% {
    transform: translate(3px, -3px);
  }
}
@keyframes snapBr {
  0%, 55%, 100% {
    transform: translate(0, 0);
  }
  75% {
    transform: translate(-3px, -3px);
  }
}
.formhud__field {
  position: relative;
  display: block;
  border-radius: 8px;
  background: #17141a;
  box-shadow: 0 1px 0 0 rgba(255, 210, 63, 0.4);
  animation: focusGlow 2s cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
}

@keyframes focusGlow {
  0%, 55%, 100% {
    box-shadow: 0 1px 0 0 rgba(255, 210, 63, 0.4);
  }
  75% {
    box-shadow: 0 1px 0 0 rgba(255, 210, 63, 0.9), 0 0 0 3px rgba(255, 210, 63, 0.25), 0 0 20px rgba(255, 210, 63, 0.35);
  }
}
.formhud__input {
  box-sizing: border-box;
  width: 100%;
  border: 0;
  background: transparent;
  padding: 12px 16px;
  color: #fff7e6;
  font-weight: 500;
  font-size: clamp(12px, 2.8vw, 13px);
  line-height: 1;
  font-family: inherit;
  outline: none;
}

.formhud__input::placeholder {
  color: rgba(255, 247, 230, 0.45);
}

.formhud__caret {
  position: absolute;
  left: 16px;
  top: 50%;
  width: 2px;
  height: 14px;
  transform: translateY(-50%);
  background: #ffd23f;
  animation: blink 2s steps(1) infinite;
}

@keyframes blink {
  0%, 49% {
    opacity: 1;
  }
  50%, 100% {
    opacity: 0.2;
  }
}
@media (prefers-reduced-motion: reduce) {
  .formhud__btn, .formhud__corner, .formhud__field, .formhud__caret {
    animation: none !important;
  }
  .formhud__btn {
    transform: scale(1);
  }
  .formhud__corner {
    transform: translate(0, 0);
  }
  .formhud__field {
    box-shadow: 0 1px 0 0 rgba(255, 210, 63, 0.4);
  }
  .formhud__caret {
    opacity: 1;
  }
}

import type { CSSProperties } from "react";
import styles from "./ButtonsInputsHud.module.scss";

export type ButtonsInputsHudProps = {
  buttonLabel?: string;
  placeholder?: string;
  duration?: number;
  easing?: string;
  color?: string;
};

type Vars = CSSProperties & { "--duration"?: string; "--easing"?: string; "--color"?: string };

export default function ButtonsInputsHud({
  buttonLabel = "락온 시작",
  placeholder = "이메일 주소",
  duration = 2000,
  easing = "cubic-bezier(.2,1.4,.4,1)",
  color = "#ffd23f",
}: ButtonsInputsHudProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };

  return (
    <form className={styles.form} style={vars}>
      <button type="button" className={styles.btn}>
        <span className={`${styles.corner} ${styles.cornerTl}`} aria-hidden="true" />
        <span className={`${styles.corner} ${styles.cornerTr}`} aria-hidden="true" />
        <span className={`${styles.corner} ${styles.cornerBl}`} aria-hidden="true" />
        <span className={`${styles.corner} ${styles.cornerBr}`} aria-hidden="true" />
        {buttonLabel}
      </button>
      <label className={styles.field}>
        <input className={styles.input} type="email" placeholder={placeholder} readOnly />
        <span className={styles.caret} aria-hidden="true" />
      </label>
    </form>
  );
}

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09 Lock-on button, scan input — Measured area 7.12% · moving frames 11/23Original by GODRICH · SCSS and React ship in the zip · HUD Interface Design: 9 UIs That Watch You Back

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HUD Interface Design: 9 UIs That Watch You Back - preview of all 9 demos

HUD Interface Design: 9 UIs That Watch You BackHUD interface design borrows the targeting reticles and radar overlays from sci-fi movies and games, laying corner brack See all demos in this post

09Lock-on button, scan input

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