:root {
    --clay: #C35A4E; --forest: #2D3D2E; --forest-dark: #1C271D;
    --cream: #F7F1E8; --cream-warm: #EFE5D2; --ink: #1A1A1A; --muted: #6B6258;
  }

  * { box-sizing: border-box; margin: 0; padding: 0; }

  body {
    font-family: 'Manrope', sans-serif;
    background: linear-gradient(180deg, #1a1a1a 0%, #2a2a2a 100%);
    min-height: 100vh;
    color: var(--cream);
    display: flex; flex-direction: column;
    padding: 2rem 1rem;
  }

  /* header container */

  .header {
    text-align: center;
    margin-bottom: 2rem;
    max-width: 500px;
    margin-left: auto; margin-right: auto;
  }


  .header h1 {
    font-family: 'Fraunces', serif;
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
  }

  .header p { color: rgba(247,241,232,0.6); font-size: 0.9rem; }
  
  /* layout container */
  
  .layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    max-width: 900px;
    margin: 0 auto;
    align-items: start;
  }


  @media (max-width: 760px) { .layout { grid-template-columns: 1fr; } }


  /*  phone */
  .phone-frame {
    background: #0f0f0f;
    border-radius: 36px;
    padding: 20px;
    box-shadow:
      0 0 0 2px #333,
      0 40px 80px -30px rgba(0,0,0,0.8),
      inset 0 0 30px rgba(0,0,0,0.5);
    width: 320px;
    margin: 0 auto;
    position: relative;
  }


  .phone-speaker {
    width: 60px; height: 6px;
    background: #333; border-radius: 3px;
    margin: 0 auto 16px;
  }


  .phone-screen {
    background: #C5D68E;
    background-image:
      repeating-linear-gradient(
        0deg,
        rgba(0,0,0,0.03),
        rgba(0,0,0,0.03) 1px,
        transparent 1px,
        transparent 2px
      );
    border-radius: 4px;
    padding: 1.2rem 1rem;
    min-height: 320px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: #1a2a0a;
    line-height: 1.4;
    white-space: pre-wrap;
    position: relative;
    box-shadow: inset 0 2px 6px rgba(0,0,0,0.15);
  }


  .phone-screen .status {
    display: flex;
    justify-content: space-between;
    font-size: 0.65rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px dashed rgba(0,0,0,0.3);
    opacity: 0.7;
  }


  .phone-screen .content {
    font-size: 0.82rem;
  }


  .phone-screen .input-area {
    position: absolute;
    bottom: 0.8rem; left: 1rem; right: 1rem;
    padding-top: 0.5rem;
    border-top: 1px dashed rgba(0,0,0,0.3);
    display: flex; justify-content: space-between;
    font-size: 0.7rem;
    opacity: 0.6;
  }


  .keypad {
    margin-top: 20px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
  }


  .key {
    aspect-ratio: 1.5 / 1;
    background: #1a1a1a;
    border: 1px solid #2a2a2a;
    border-radius: 8px;
    color: var(--cream);
    font-family: 'Fraunces', serif;
    font-size: 1.5rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.1s;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 0 #000;
  }


  .key:active {
    transform: translateY(2px);
    box-shadow: 0 0 0 #000;
  }

  .key.send {
    background: var(--forest);
    grid-column: 1; grid-row: 5;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
  }


  .key.clear {
    background: var(--clay);
    grid-column: 3; grid-row: 5;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
  }

  .key.hash, .key.star { font-family: monospace; font-size: 2rem; }


/* side panel  */
  .side {
    padding: 1rem;
  }

  .side h2 {
    font-family: 'Fraunces', serif;
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--cream);
  }

  .side p { color: rgba(247,241,232,0.7); margin-bottom: 1.5rem; line-height: 1.6; font-size: 0.92rem; }

  
  /* the quick dial section */
  .quick-dial {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 6px;
    padding: 1.2rem;
    margin-bottom: 1rem;
  }


  .quick-dial strong {
    display: block;
    font-family: 'JetBrains Mono', monospace;
    color: var(--clay);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
  }


  .quick-dial p { margin: 0; font-size: 0.85rem; color: rgba(247,241,232,0.6); }

  
  /*log section */
  .log {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: rgba(247,241,232,0.4);
    padding: 1rem;
    background: rgba(0,0,0,0.3);
    border-radius: 4px;
    max-height: 200px;
    overflow-y: auto;
    margin-top: 1rem;
  }


  .log div { margin-bottom: 0.3rem; }

  .log .req { color: #8bbbe8; }

  .log .res { color: #c5d68e; }