* {
    box-sizing: border-box;
  }
  
  :root {
    --bg-black: #050507;
    --bg-deep: #090714;
    --panel: rgba(12, 10, 24, 0.72);
    --panel-bright: rgba(255, 255, 255, 0.08);
    --text-main: #f7f2ff;
    --text-muted: rgba(247, 242, 255, 0.72);
    --cyan: #9eefff;
    --violet: #cda7ff;
    --green: #72ffb6;
    --danger-pink: #ff5fb7;
  }
  
  body {
    margin: 0;
    min-height: 100vh;
    font-family: Arial, Helvetica, sans-serif;
    color: var(--text-main);
    background: var(--bg-black);
    overflow-x: hidden;
  }
  
  .page-shell {
    position: relative;
    min-height: 100vh;
    display: grid;
    grid-template-columns: minmax(280px, 1fr) minmax(340px, 470px);
    align-items: center;
    gap: 48px;
    padding: 64px;
    isolation: isolate;
  }
  
  /* 
    IMAGE CUSTOMIZATION ZONE
  
    Later, when you add real files, you can use:
  
    background-image: url("assets/background.jpg");
  
    For left/right transparent PNGs, look for:
    .image-frame-left::before
    .image-frame-right::before
  */
  
  .background-image-layer {
    position: fixed;
    inset: 0;
    z-index: -5;
    background:
      radial-gradient(circle at 20% 20%, rgba(167, 93, 255, 0.30), transparent 34%),
      radial-gradient(circle at 80% 70%, rgba(0, 229, 255, 0.20), transparent 36%),
      linear-gradient(135deg, #070711 0%, #151022 45%, #050507 100%);
    background-size: cover;
    background-position: center;
  }
  
  .background-noise-layer {
    position: fixed;
    inset: 0;
    z-index: -4;
    opacity: 0.20;
    background-image:
      linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 38px 38px;
    mask-image: radial-gradient(circle at center, black, transparent 78%);
  }
  
  .background-vignette-layer {
    position: fixed;
    inset: 0;
    z-index: -3;
    background:
      radial-gradient(circle at center, transparent 0%, rgba(0, 0, 0, 0.18) 48%, rgba(0, 0, 0, 0.76) 100%);
  }
  
  .hero-text {
    max-width: 760px;
    z-index: 3;
  }
  
  .eyebrow,
  .small-label {
    margin: 0 0 12px;
    color: var(--cyan);
    text-transform: uppercase;
    letter-spacing: 0.22em;
    font-size: 0.78rem;
  }
  
  h1 {
    margin: 0;
    font-size: clamp(4rem, 10vw, 9rem);
    line-height: 0.85;
    letter-spacing: -0.08em;
    text-transform: uppercase;
    text-shadow:
      0 0 18px rgba(158, 239, 255, 0.12),
      0 20px 70px rgba(0, 0, 0, 0.55);
  }
  
  .tagline {
    max-width: 620px;
    margin-top: 28px;
    font-size: 1.25rem;
    line-height: 1.65;
    color: var(--text-muted);
  }
  
  .idea-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 28px;
  }
  
  .idea-strip span {
    padding: 9px 13px;
    border: 1px solid rgba(158, 239, 255, 0.18);
    border-radius: 999px;
    color: rgba(247, 242, 255, 0.78);
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(14px);
    font-size: 0.88rem;
  }
  
  .chat-card {
    position: relative;
    z-index: 4;
    min-height: 640px;
    display: flex;
    flex-direction: column;
    padding: 24px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 32px;
    background: var(--panel);
    box-shadow:
      0 30px 100px rgba(0, 0, 0, 0.50),
      inset 0 1px 0 rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(24px);
  }
  
  .chat-card::before {
    content: "";
    position: absolute;
    inset: -1px;
    z-index: -1;
    border-radius: inherit;
    background: linear-gradient(135deg, rgba(158, 239, 255, 0.35), transparent 28%, rgba(205, 167, 255, 0.28));
    opacity: 0.7;
    mask:
      linear-gradient(#000 0 0) content-box,
      linear-gradient(#000 0 0);
    padding: 1px;
    mask-composite: exclude;
  }
  
  .chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding-bottom: 18px;
  }
  
  .chat-header h2 {
    margin: 0;
    font-size: 1.4rem;
  }
  
  .status-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 11px;
    border-radius: 999px;
    color: rgba(247, 242, 255, 0.72);
    background: rgba(255, 255, 255, 0.07);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
  }
  
  .status-dot {
    width: 10px;
    height: 10px;
    border-radius: 999px;
    background: var(--green);
    box-shadow: 0 0 22px var(--green);
  }
  
  .chat-window {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 20px;
    border-radius: 24px;
    background:
      linear-gradient(180deg, rgba(255, 255, 255, 0.075), rgba(255, 255, 255, 0.035));
    overflow-y: auto;
  }
  
  .message {
    max-width: 85%;
    padding: 14px 16px;
    border-radius: 18px;
    line-height: 1.45;
  }
  
  .message.bot {
    align-self: flex-start;
    background: rgba(255, 255, 255, 0.13);
  }
  
  .message.user {
    align-self: flex-end;
    background: rgba(158, 239, 255, 0.18);
    border: 1px solid rgba(158, 239, 255, 0.32);
  }
  
  .chat-form {
    display: flex;
    gap: 12px;
    margin-top: 18px;
  }
  
  .chat-form input {
    flex: 1;
    min-width: 0;
    padding: 16px 18px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 999px;
    color: #fff;
    background: rgba(255, 255, 255, 0.08);
    outline: none;
  }
  
  .chat-form input:focus {
    border-color: rgba(158, 239, 255, 0.55);
    box-shadow: 0 0 0 4px rgba(158, 239, 255, 0.08);
  }
  
  .chat-form input::placeholder {
    color: rgba(255, 255, 255, 0.48);
  }
  
  .chat-form button {
    padding: 0 22px;
    border: none;
    border-radius: 999px;
    color: #080711;
    font-weight: 800;
    cursor: pointer;
    background: linear-gradient(135deg, var(--cyan), var(--violet));
    transition: transform 160ms ease, filter 160ms ease;
  }
  
  .chat-form button:hover {
    transform: translateY(-1px);
    filter: brightness(1.08);
  }
  
  /* Side image slots */
  
  .image-frame {
    position: fixed;
    z-index: 2;
    width: min(24vw, 280px);
    aspect-ratio: 3 / 5;
    pointer-events: none;
  }
  
  .image-frame-left {
    left: 20px;
    bottom: 30px;
  }
  
  .image-frame-right {
    right: 22px;
    top: 40px;
  }
  
  .image-placeholder {
    width: 100%;
    height: 100%;
    display: grid;
    place-items: center;
    border: 1px dashed rgba(255, 255, 255, 0.24);
    border-radius: 32px;
    color: rgba(255, 255, 255, 0.35);
    background:
      linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
    backdrop-filter: blur(12px);
    transform: rotate(-3deg);
  }
  
  .image-frame-right .image-placeholder {
    transform: rotate(4deg);
  }
  
  .image-placeholder span {
    font-size: 0.72rem;
    letter-spacing: 0.22em;
  }
  
  /* Later real-image version:
  
  .image-frame-left {
    background: url("assets/left-character.png") center / contain no-repeat;
  }
  
  .image-frame-right {
    background: url("assets/right-character.png") center / contain no-repeat;
  }
  
  .image-frame-left .image-placeholder,
  .image-frame-right .image-placeholder {
    display: none;
  }
  
  */
  
  .visual-orb {
    position: absolute;
    border-radius: 999px;
    filter: blur(10px);
    opacity: 0.7;
    z-index: 1;
    pointer-events: none;
  }
  
  .orb-one {
    width: 260px;
    height: 260px;
    left: -80px;
    bottom: 80px;
    background: rgba(205, 167, 255, 0.25);
  }
  
  .orb-two {
    width: 180px;
    height: 180px;
    right: 80px;
    top: 80px;
    background: rgba(158, 239, 255, 0.20);
  }
  
  .orb-three {
    width: 220px;
    height: 220px;
    left: 50%;
    top: 12%;
    background: rgba(255, 95, 183, 0.12);
  }
  
  .corner-mark {
    position: fixed;
    right: 24px;
    bottom: 20px;
    color: rgba(255, 255, 255, 0.22);
    letter-spacing: 0.4em;
    font-size: 0.72rem;
    z-index: 5;
  }
  
  @media (max-width: 1100px) {
    .image-frame {
      opacity: 0.35;
    }
  }
  
  @media (max-width: 900px) {
    .page-shell {
      grid-template-columns: 1fr;
      padding: 32px 18px;
    }
  
    .chat-card {
      min-height: 560px;
    }
  
    h1 {
      font-size: clamp(3.5rem, 18vw, 6rem);
    }
  
    .image-frame {
      display: none;
    }
  }