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

    :root {
      --void:   #0A0F1E;
      --card:   #101828;
      --border: #1A2640;
      --cyan:   #00D4FF;
      --blue:   #112091;
      --text:   #EEF2FF;
      --muted:  #6B7A99;
      --faint:  #243050;

      /* Vivid paint wall colours */
      --s1: #FF2D55;   /* Signal Red     */
      --s2: #FF6B00;   /* Blaze Orange   */
      --s3: #FFD600;   /* Studio Yellow  */
      --s4: #00C853;   /* Neon Leaf      */
      --s5: #2979FF;   /* Royal Cobalt   */
      --s6: #D500F9;   /* Electric Violet*/
      --s7: #FF4081;   /* Hot Coral      */
      --s8: #00E5FF;   /* Aqua Spark     */
    }

    html, body {
      height: 100%;
      background: var(--void);
      font-family: 'Inter', sans-serif;
      color: var(--text);
      overflow: hidden;
    }

    /* ── BACKGROUND ── */
    .scene {
      position: fixed;
      inset: 0;
      z-index: 0;
    }
    .scene::before {
      content: '';
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(rgba(0,212,255,0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,212,255,0.035) 1px, transparent 1px);
      background-size: 48px 48px;
      animation: gridShift 22s linear infinite;
    }
    .scene::after {
      content: '';
      position: absolute;
      top: 50%; left: 50%;
      transform: translate(-50%,-50%);
      width: 1000px; height: 1000px;
      background: radial-gradient(ellipse at center,
        rgba(17,32,145,0.3) 0%,
        rgba(0,212,255,0.05) 40%,
        transparent 70%);
      animation: bgPulse 7s ease-in-out infinite alternate;
    }
    @keyframes gridShift { to { background-position: 48px 48px, 48px 48px; } }
    @keyframes bgPulse {
      from { transform: translate(-50%,-50%) scale(0.95); opacity: 0.7; }
      to   { transform: translate(-50%,-50%) scale(1.05); opacity: 1; }
    }

    .rings { position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); }
    .ring {
      position: absolute;
      border-radius: 50%;
      border: 1px solid rgba(0,212,255,0.07);
      top: 50%; left: 50%;
      transform: translate(-50%,-50%);
      animation: ringExpand 6s ease-out infinite;
    }
    .ring:nth-child(1) { width: 300px;  height: 300px;  animation-delay: 0s; }
    .ring:nth-child(2) { width: 520px;  height: 520px;  animation-delay: 1.5s; }
    .ring:nth-child(3) { width: 740px;  height: 740px;  animation-delay: 3s; }
    .ring:nth-child(4) { width: 960px;  height: 960px;  animation-delay: 4.5s; }
    @keyframes ringExpand {
      0%   { opacity: 0.45; transform: translate(-50%,-50%) scale(0.75); }
      100% { opacity: 0;    transform: translate(-50%,-50%) scale(1); }
    }

    .particles { position: absolute; inset: 0; pointer-events: none; }
    .particle {
      position: absolute;
      border-radius: 50%;
      opacity: 0;
      animation: floatUp linear infinite;
    }
    @keyframes floatUp {
      0%   { transform: translateY(100vh); opacity: 0; }
      10%  { opacity: 0.7; }
      90%  { opacity: 0.25; }
      100% { transform: translateY(-10vh) translateX(28px); opacity: 0; }
    }

    /* ── PAGE ── */
    .page {
      position: relative;
      z-index: 10;
      min-height: 100vh;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 24px;
    }

    /* ── CARD ── */
    .card {
      display: flex;
      width: 100%;
      max-width: 800px;
      min-height: 570px;
      border-radius: 20px;
      overflow: hidden;
      border: 1px solid rgba(0,212,255,0.09);
      box-shadow:
        0 0 0 1px rgba(255,255,255,0.03),
        0 32px 90px rgba(0,0,0,0.7),
        inset 0 1px 0 rgba(255,255,255,0.04);
      animation: cardIn 0.75s cubic-bezier(0.22,1,0.36,1) both;
      position: relative;
    }
    @keyframes cardIn {
      from { opacity: 0; transform: translateY(28px) scale(0.97); }
      to   { opacity: 1; transform: none; }
    }

    /* HUD corners */
    .corner {
      position: absolute;
      width: 56px; height: 56px;
      pointer-events: none;
      z-index: 20;
    }
    .corner-tl {
      top: -1px; left: -1px;
      border-top: 2px solid var(--cyan);
      border-left: 2px solid var(--cyan);
      border-radius: 20px 0 0 0;
      opacity: 0.5;
    }
    .corner-br {
      bottom: -1px; right: -1px;
      border-bottom: 2px solid var(--cyan);
      border-right: 2px solid var(--cyan);
      border-radius: 0 0 20px 0;
      opacity: 0.5;
    }

    /* ── SWATCH PANEL ── */
    .swatch-panel {
      width: 168px;
      flex-shrink: 0;
      display: flex;
      flex-direction: column;
      position: relative;
      overflow: hidden;
    }

    /* Spectrum stripe across the very top */
    .swatch-panel::before {
      content: '';
      position: absolute;
      top: 0; left: 0; right: 0;
      height: 3px;
      background: linear-gradient(90deg,
        var(--s1), var(--s2), var(--s3), var(--s4),
        var(--s5), var(--s6), var(--s7), var(--s8));
      z-index: 3;
    }

    /* Vertical label */
    .swatch-brand {
      position: absolute;
      top: 50%; left: 50%;
      transform: translate(-50%,-50%) rotate(-90deg);
      font-family: 'Manrope', sans-serif;
      font-size: 10px;
      font-weight: 800;
      color: rgba(255,255,255,0.1);
      letter-spacing: 5px;
      text-transform: uppercase;
      white-space: nowrap;
      pointer-events: none;
      z-index: 1;
    }

    .swatch {
      flex: 1;
      position: relative;
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      padding: 8px 12px;
      transition: flex 0.38s cubic-bezier(0.22,1,0.36,1);
      cursor: default;
      overflow: hidden;
    }
    .swatch:hover { flex: 2.6; }

    /* Gradient fade to black at bottom */
    .swatch::after {
      content: '';
      position: absolute;
      bottom: 0; left: 0; right: 0;
      height: 50%;
      background: linear-gradient(to bottom, transparent, rgba(0,0,0,0.45));
      pointer-events: none;
    }

    /* Shine sweep on hover */
    .swatch::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg,
        rgba(255,255,255,0.18) 0%,
        rgba(255,255,255,0) 60%);
      opacity: 0;
      transition: opacity 0.3s;
      z-index: 1;
    }
    .swatch:hover::before { opacity: 1; }

    .s1 { background: var(--s1); }
    .s2 { background: var(--s2); }
    .s3 { background: var(--s3); }
    .s4 { background: var(--s4); }
    .s5 { background: var(--s5); }
    .s6 { background: var(--s6); }
    .s7 { background: var(--s7); }
    .s8 { background: var(--s8); }

    .swatch-chip {
      background: rgba(0,0,0,0.4);
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: 5px;
      padding: 5px 9px;
      display: inline-flex;
      flex-direction: column;
      gap: 2px;
      opacity: 0;
      transform: translateY(8px);
      transition: opacity 0.22s, transform 0.22s;
      max-width: fit-content;
      position: relative;
      z-index: 2;
    }
    .swatch:hover .swatch-chip { opacity: 1; transform: none; }

    .chip-name {
      font-size: 10px;
      font-weight: 700;
      color: rgba(255,255,255,0.95);
      letter-spacing: 0.2px;
      white-space: nowrap;
      font-family: 'Manrope', sans-serif;
    }
    .chip-code {
      font-size: 9px;
      color: rgba(255,255,255,0.5);
      letter-spacing: 1px;
    }

    /* Yellow swatch — use dark text */
    .s3 .chip-name { color: rgba(0,0,0,0.85); }
    .s3 .chip-code { color: rgba(0,0,0,0.45); }
    .s3 .swatch-chip { background: rgba(0,0,0,0.2); border-color: rgba(0,0,0,0.1); }

    /* ── FORM PANEL ── */
    .form-panel {
      flex: 1;
      background: var(--card);
      padding: 50px 46px 42px;
      display: flex;
      flex-direction: column;
      position: relative;
      border-left: 1px solid rgba(255,255,255,0.04);
    }
    /* Cyan top stripe */
    .form-panel::before {
      content: '';
      position: absolute;
      top: 0; left: 0; right: 0;
      height: 2px;
      background: linear-gradient(90deg, transparent, var(--cyan), var(--blue), transparent);
    }

    /* ── LOGO ── */
    .logo-row {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 32px;
    }
    .logo-icon {
      width: 44px; height: 44px;
      background: linear-gradient(135deg, var(--blue), #1565C0);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 0 20px rgba(0,212,255,0.2);
      flex-shrink: 0;
      position: relative;
      overflow: hidden;
    }
    /* Rainbow bottom bar on logo icon */
    .logo-icon::after {
      content: '';
      position: absolute;
      bottom: 0; left: 0; right: 0;
      height: 3px;
      background: linear-gradient(90deg, var(--s1), var(--s3), var(--s4), var(--s5), var(--s6));
    }
    .logo-icon svg { width: 22px; height: 22px; }

    .logo-text { display: flex; flex-direction: column; }
    .logo-name {
      font-family: 'Manrope', sans-serif;
      font-size: 16px;
      font-weight: 800;
      letter-spacing: -0.3px;
      color: var(--text);
      line-height: 1;
    }
    .logo-name span { color: var(--cyan); }
    .logo-sub {
      font-size: 10px;
      font-weight: 500;
      color: var(--muted);
      letter-spacing: 1.3px;
      text-transform: uppercase;
      margin-top: 3px;
    }

    /* ── SPECTRUM DIVIDER under logo ── */
    .spectrum-bar {
      height: 3px;
      border-radius: 2px;
      background: linear-gradient(90deg,
        var(--s1), var(--s2), var(--s3), var(--s4),
        var(--s5), var(--s6), var(--s7), var(--s8));
      width: 56px;
      margin-bottom: 26px;
    }

    /* ── STATUS ── */
    .status {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(0,212,255,0.06);
      border: 1px solid rgba(0,212,255,0.16);
      border-radius: 20px;
      padding: 4px 12px 4px 8px;
      font-size: 11px;
      font-weight: 600;
      color: var(--cyan);
      letter-spacing: 0.4px;
      margin-bottom: 24px;
    }
    .status-dot {
      width: 7px; height: 7px;
      background: var(--cyan);
      border-radius: 50%;
      box-shadow: 0 0 6px var(--cyan);
      animation: blink 1.4s ease-in-out infinite;
    }
    @keyframes blink {
      0%,100% { opacity: 1; }
      50%      { opacity: 0.2; }
    }

    /* ── HEADINGS ── */
    .heading {
      font-family: 'Manrope', sans-serif;
      font-size: 27px;
      font-weight: 800;
      letter-spacing: -0.5px;
      line-height: 1.2;
      margin-bottom: 6px;
      color: var(--text);
    }
    .subheading {
      font-size: 13px;
      color: var(--muted);
      line-height: 1.5;
      margin-bottom: 28px;
    }

    /* ── NOTIFICATION ── */
    .notification {
      display: none;
      align-items: flex-start;
      gap: 10px;
      background: rgba(255,45,85,0.08);
      border: 1px solid rgba(255,45,85,0.22);
      border-radius: 8px;
      padding: 12px 14px;
      margin-bottom: 16px;
      font-size: 13px;
      color: #FF6B8A;
      line-height: 1.4;
    }
    .notification.visible { display: flex; }
    .notification.success {
      background: rgba(0,200,83,0.08);
      border-color: rgba(0,200,83,0.22);
      color: #5DFFB0;
    }
    .notification svg { flex-shrink: 0; margin-top: 1px; }

    .auth-back {
      margin-top: auto;
      padding-top: 16px;
    }
    .auth-back a {
      font-size: 13px;
      color: var(--cyan);
      text-decoration: none;
      font-weight: 500;
    }
    .auth-back a:hover { opacity: 0.65; }

    /* ── FORM ── */
    .form-group { margin-bottom: 16px; }
    label {
      display: block;
      font-size: 11px;
      font-weight: 600;
      color: var(--muted);
      letter-spacing: 0.9px;
      text-transform: uppercase;
      margin-bottom: 7px;
    }
    .input-wrap { position: relative; }
    .input-icon {
      position: absolute;
      left: 14px; top: 50%;
      transform: translateY(-50%);
      color: var(--faint);
      display: flex;
      align-items: center;
      pointer-events: none;
      transition: color 0.2s;
    }
    .input-wrap:focus-within .input-icon { color: var(--cyan); }

    input[type="email"],
    input[type="password"],
    input[type="text"] {
      width: 100%;
      background: rgba(10,15,30,0.65);
      border: 1px solid var(--border);
      border-radius: 10px;
      padding: 13px 44px 13px 40px;
      font-size: 14px;
      font-family: 'Inter', sans-serif;
      color: var(--text);
      outline: none;
      transition: border-color 0.2s, box-shadow 0.2s;
    }
    input::placeholder { color: #283550; }
    input:focus {
      border-color: var(--cyan);
      box-shadow: 0 0 0 3px rgba(0,212,255,0.1);
    }

    .eye-btn {
      position: absolute;
      right: 14px; top: 50%;
      transform: translateY(-50%);
      background: none; border: none;
      cursor: pointer;
      color: var(--faint);
      display: flex; padding: 0;
      transition: color 0.2s;
    }
    .eye-btn:hover { color: var(--cyan); }

    /* ── OPTIONS ── */
    .options {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 24px;
    }
    .remember {
      display: flex;
      align-items: center;
      gap: 8px;
      cursor: pointer;
      font-size: 13px;
      color: var(--muted);
      user-select: none;
    }
    .remember input[type="checkbox"] {
      appearance: none;
      -webkit-appearance: none;
      width: 16px; height: 16px;
      border: 1.5px solid var(--border);
      border-radius: 4px;
      background: rgba(10,15,30,0.65);
      cursor: pointer;
      padding: 0;
      transition: background 0.2s, border-color 0.2s;
      position: relative;
      flex-shrink: 0;
    }
    .remember input[type="checkbox"]:checked {
      background: var(--cyan);
      border-color: var(--cyan);
    }
    .remember input[type="checkbox"]:checked::after {
      content: '';
      position: absolute;
      left: 3px; top: 1px;
      width: 5px; height: 8px;
      border: 2px solid #0A0F1E;
      border-top: none; border-left: none;
      transform: rotate(45deg);
    }
    .forgot {
      font-size: 13px;
      color: var(--cyan);
      text-decoration: none;
      font-weight: 500;
      transition: opacity 0.2s;
    }
    .forgot:hover { opacity: 0.65; }

    /* ── CTA BUTTON ── */
    .btn-primary {
      width: 100%;
      padding: 14px;
      background: linear-gradient(135deg, #112091, #1A35C0);
      border: 1px solid rgba(0,212,255,0.2);
      border-radius: 10px;
      color: #fff;
      font-family: 'Manrope', sans-serif;
      font-size: 15px;
      font-weight: 700;
      letter-spacing: 0.2px;
      cursor: pointer;
      position: relative;
      overflow: hidden;
      transition: transform 0.15s, box-shadow 0.2s;
      box-shadow: 0 4px 24px rgba(17,32,145,0.5);
    }
    .btn-primary::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(0,212,255,0.15), transparent);
      opacity: 0;
      transition: opacity 0.2s;
    }
    /* Spectrum underline on button */
    .btn-primary::before {
      content: '';
      position: absolute;
      bottom: 0; left: 0; right: 0;
      height: 2px;
      background: linear-gradient(90deg,
        var(--s1), var(--s3), var(--s4), var(--s5), var(--s6));
      opacity: 0.7;
    }
    .btn-primary:hover { transform: translateY(-1px); box-shadow: 0 8px 32px rgba(17,32,145,0.65); }
    .btn-primary:hover::after { opacity: 1; }
    .btn-primary:active { transform: translateY(0); }
    .btn-primary:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

    .btn-label {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      position: relative;
      z-index: 1;
    }

    .spinner {
      width: 18px; height: 18px;
      border: 2px solid rgba(255,255,255,0.25);
      border-top-color: #fff;
      border-radius: 50%;
      animation: spin 0.7s linear infinite;
      display: none;
    }
    @keyframes spin { to { transform: rotate(360deg); } }

    /* ── SSO ── */
    .divider {
      display: flex;
      align-items: center;
      gap: 12px;
      margin: 18px 0;
    }
    .divider-line { flex: 1; height: 1px; background: var(--border); }
    .divider-text { font-size: 11px; color: var(--muted); letter-spacing: 0.8px; }

    .btn-sso {
      width: 100%;
      padding: 12px;
      background: transparent;
      border: 1px solid var(--border);
      border-radius: 10px;
      color: var(--text);
      font-family: 'Inter', sans-serif;
      font-size: 14px;
      font-weight: 500;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      transition: border-color 0.2s, background 0.2s;
    }
    .btn-sso:hover {
      border-color: rgba(0,212,255,0.3);
      background: rgba(0,212,255,0.04);
    }

    /* ── FOOTER ── */
    .card-footer {
      margin-top: auto;
      padding-top: 20px;
      border-top: 1px solid var(--border);
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .security-tag {
      display: flex;
      align-items: center;
      gap: 6px;
      font-size: 11px;
      color: var(--muted);
    }
    .version-tag { font-size: 11px; color: var(--faint); font-weight: 500; }