:root {
      --c-dark: #0b0b0b;
      --c-brand: #ff2b2b;
      --c-brand-light: #ff4e4e;
      --c-body: #cfcfcf;
      --font-base: "Poppins", sans-serif;
      --transition: all 0.4s ease;
    }

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

    body {
      font-family: var(--font-base);
      background: radial-gradient(circle at top, #000, #0b0b0b);
      color: var(--c-body);
      overflow-x: hidden;
      position: relative;
    }

    /* Background music reactive effect */
    .music-bg {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: radial-gradient(circle at center, rgba(255, 50, 50, 0.15), transparent 70%);
      pointer-events: none;
      z-index: 0;
      transition: all 0.2s ease;
      filter: blur(50px);
    }

    /* Welcome Dialog */
    .dialog-overlay {
      position: fixed;
      top: 0; left: 0;
      width: 100%; height: 100%;
      background: rgba(0, 0, 0, 0.85);
      display: flex;
      justify-content: center;
      align-items: center;
      z-index: 9999;
      animation: fadeIn 1s ease;
    }

    @keyframes fadeIn {
      from { opacity: 0; }
      to { opacity: 1; }
    }

    .dialog-box {
      background: rgba(25, 25, 25, 0.9);
      padding: 2rem 3rem;
      border-radius: 20px;
      text-align: center;
      border: 1px solid var(--c-brand-light);
      box-shadow: 0 0 25px rgba(255, 50, 50, 0.7);
      animation: scaleIn 0.8s ease;
    }

    @keyframes scaleIn {
      from { transform: scale(0.8); opacity: 0; }
      to { transform: scale(1); opacity: 1; }
    }

    .dialog-box h2 {
      color: var(--c-brand);
      font-size: 2rem;
      margin-bottom: 1rem;
      text-shadow: 0 0 15px rgba(255, 40, 40, 0.8);
    }

    .dialog-box button {
      background: var(--c-brand);
      color: white;
      border: none;
      padding: 0.7rem 2rem;
      border-radius: 30px;
      font-size: 1rem;
      cursor: pointer;
      transition: 0.3s;
    }

    .dialog-box button:hover {
      background: var(--c-brand-light);
      transform: scale(1.05);
    }

    /* Section Title */
    .section-title {
      text-align: center;
      margin: 3rem 0;
      font-size: 2.5rem;
      color: var(--c-brand-light);
      text-shadow: 0 0 20px rgba(255, 0, 0, 0.8);
      font-weight: 700;
      letter-spacing: 1px;
    }

    /* Timeline */
    .timeline {
      position: relative;
      padding: 2rem 0;
      margin: 0 auto;
      max-width: 1000px;
    }

    .timeline::before {
      content: '';
      position: absolute;
      top: 0;
      left: 50%;
      width: 3px;
      height: 100%;
      background: linear-gradient(var(--c-brand-light), transparent);
      transform: translateX(-50%);
      animation: pulseLine 3s infinite alternate;
      z-index: 0;
    }

    @keyframes pulseLine {
      0% { opacity: 0.6; box-shadow: 0 0 10px rgba(255, 40, 40, 0.5); }
      100% { opacity: 1; box-shadow: 0 0 25px rgba(255, 0, 0, 1); }
    }

    .timeline-item {
      position: relative;
      margin: 2.5rem 0;
      cursor: pointer;
      transition: var(--transition);
    }

    .timeline-item:nth-child(even) { text-align: right; }

    .timeline-content {
      background: rgba(20, 20, 20, 0.9);
      border: 1px solid rgba(255, 60, 60, 0.8);
      border-radius: 20px;
      padding: 1.5rem;
      width: 45%;
      transition: var(--transition);
      position: relative;
      z-index: 2;
    }

    .timeline-item:nth-child(odd) .timeline-content { left: 55%; }
    .timeline-item:nth-child(even) .timeline-content { left: 0; }

    .timeline-item:hover .timeline-content {
      box-shadow: 0 0 20px rgba(255, 0, 0, 0.6);
      transform: scale(1.03);
    }

    .timeline-dot {
      position: absolute;
      top: 25px;
      left: 50%;
      width: 16px;
      height: 16px;
      background: var(--c-brand-light);
      border-radius: 50%;
      transform: translateX(-50%);
      box-shadow: 0 0 20px rgba(255, 50, 50, 0.8);
      z-index: 3;
    }

    /* Scroll-driven progress line (grows as you scroll the timeline) */
    .timeline-progress {
      position: absolute;
      top: 0;
      left: 50%;
      transform: translateX(-50%);
      width: 3px;
      height: 0%;
      background: linear-gradient(180deg, var(--c-brand-light), var(--c-brand));
      border-radius: 2px;
      transition: height 220ms linear;
      z-index: 1;
      box-shadow: 0 0 12px rgba(255, 60, 60, 0.5);
    }

    /* Advanced full-screen preloader (motivational) */
    .preloader-overlay {
      position: fixed;
      inset: 0;
      display: flex;
      align-items: center;
      justify-content: center;
      background: linear-gradient(180deg, rgba(8,8,10,0.95), rgba(4,4,6,0.98));
      z-index: 100000;
      color: #fff;
      flex-direction: column;
      gap: 1rem;
      transition: opacity 0.5s ease, visibility 0.5s ease;
      backdrop-filter: blur(6px) saturate(120%);
      overflow: hidden;
    }

    /* animated ambient gradient */
    .preloader-overlay::before {
      content: '';
      position: absolute;
      inset: -20% -10%;
      background: radial-gradient(circle at 20% 30%, rgba(255,40,40,0.06), transparent 10%), radial-gradient(circle at 80% 70%, rgba(255,80,80,0.04), transparent 12%);
      filter: blur(40px);
      animation: slowMove 12s linear infinite;
      z-index: 0;
      pointer-events: none;
    }

    @keyframes slowMove {
      0% { transform: translateY(0) translateX(0) rotate(0deg); }
      50% { transform: translateY(-6%) translateX(3%) rotate(3deg); }
      100% { transform: translateY(0) translateX(0) rotate(0deg); }
    }

    .preloader-box {
      position: relative;
      z-index: 2;
      width: min(1000px, 88%);
      max-width: 1100px;
      text-align: center;
      padding: 2rem 2.4rem;
      border-radius: 14px;
      background: linear-gradient(180deg, rgba(10,10,12,0.55), rgba(6,6,8,0.5));
      border: 1px solid rgba(255,40,40,0.06);
      box-shadow: 0 30px 80px rgba(0,0,0,0.7);
      display: grid;
      grid-template-columns: 1fr 360px;
      gap: 1.2rem;
      align-items: center;
    }

    .preloader-left {
      text-align: left;
      padding-left: 1rem;
    }

    .preloader-headline {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--c-brand-light);
      margin-bottom: 0.25rem;
      text-shadow: 0 6px 28px rgba(255,40,40,0.08);
    }

    .preloader-sub {
      color: var(--c-body);
      margin-bottom: 0.6rem;
      font-size: 1rem;
    }

    .preloader-quote {
      font-size: 1.05rem;
      color: #ffdede;
      opacity: 0.95;
      min-height: 1.6em;
      transition: opacity 400ms ease;
    }

    .preloader-right {
      display: flex;
      flex-direction: column;
      gap: 0.8rem;
      align-items: center;
      justify-content: center;
    }

    .preloader-percent {
      font-size: 2.6rem;
      font-weight: 800;
      letter-spacing: 0.6px;
      color: var(--c-brand);
    }

    .preloader-bar {
      background: rgba(255,255,255,0.04);
      height: 12px;
      border-radius: 999px;
      overflow: hidden;
      margin-top: 12px;
      width: 100%;
    }

    .preloader-bar-fill {
      width: 0%;
      height: 100%;
      background: linear-gradient(90deg, var(--c-brand-light), var(--c-brand));
      transition: width 350ms cubic-bezier(.2,.9,.3,1);
      box-shadow: 0 6px 22px rgba(255,40,40,0.12) inset;
    }

    .preloader-skip {
      margin-top: 10px;
      background: transparent;
      border: 1px solid rgba(255,255,255,0.06);
      color: var(--c-body);
      padding: 8px 12px;
      border-radius: 8px;
      cursor: pointer;
      font-size: 0.92rem;
    }

    .preloader-mini {
      font-size: 0.82rem;
      color: rgba(255,255,255,0.6);
      margin-top: 6px;
    }

    /* floating motif circles for visual interest */
    .float-circle {
      position: absolute;
      border-radius: 50%;
      filter: blur(20px);
      opacity: 0.12;
      pointer-events: none;
    }

    .float-circle.c1 { width: 220px; height: 220px; background: radial-gradient(circle,#ff4e4e,#ff2b2b); top: 6%; left: 8%; }
    .float-circle.c2 { width: 180px; height: 180px; background: radial-gradient(circle,#ff7b7b,#ff4e4e); bottom: 6%; right: 6%; }

    @media (max-width: 860px) {
      .preloader-box { grid-template-columns: 1fr; }
      .preloader-left { text-align: center; padding-left: 0; }
      .preloader-right { flex-direction: row; gap: 1rem; }
      .preloader-percent { font-size: 2rem; }
    }

    .timeline-content img {
      width: 100%;
      border-radius: 15px;
      margin-bottom: 1rem;
    }

    .timeline-content h4 {
      color: var(--c-brand-light);
      font-size: 1.2rem;
      margin-bottom: 0.5rem;
    }

    .timeline-content p {
      color: var(--c-body);
      margin-bottom: 0.3rem;
      font-size: 0.95rem;
    }

    footer {
      background: #090909;
      color: #999;
      text-align: center;
      padding: 2rem 0;
      font-size: 0.9rem;
      border-top: 1px solid rgba(255, 0, 0, 0.2);
    }

    /* Image viewer modal */
    .modal {
      position: fixed;
      top: 0; left: 0;
      width: 100%; height: 100%;
      background: rgba(0, 0, 0, 0.9);
      display: none;
      justify-content: center;
      align-items: center;
      z-index: 10000;
      animation: fadeIn 0.5s ease;
    }

    .modal img {
      max-width: 90%;
      max-height: 80%;
      border-radius: 10px;
      box-shadow: 0 0 25px rgba(255, 50, 50, 0.7);
      animation: zoomIn 0.5s ease;
    }

    @keyframes zoomIn {
      from { transform: scale(0.7); opacity: 0; }
      to { transform: scale(1); opacity: 1; }
    }

    @media (max-width: 768px) {
      .timeline-content {
        width: 80% !important;
        left: 10% !important;
        text-align: left !important;
      }
      .timeline::before {
        left: 5%;
      }
      .timeline-dot {
        left: 5%;
        top: 20px;
        width: 14px;
        height: 14px;
        transform: none;
      }
      /* make the progress line follow the left-aligned center line on small screens */
      .timeline-progress {
        left: 5%;
        transform: none;
      }
    }

    /* Feedback modal styles */
    .feedback-modal {
      position: fixed;
      inset: 0;
      display: none;
      align-items: center;
      justify-content: center;
      background: rgba(2,2,2,0.75);
      z-index: 110000;
      padding: 1.2rem;
    }

    .feedback-box {
      width: 720px;
      max-width: 98%;
      background: linear-gradient(180deg, rgba(10,10,10,0.95), rgba(6,6,6,0.95));
      border-radius: 12px;
      padding: 1.2rem 1.4rem;
      box-shadow: 0 20px 60px rgba(0,0,0,0.7);
      border: 1px solid rgba(255,40,40,0.05);
      color: var(--c-body);
    }

    .feedback-box h3 { margin-bottom: 0.4rem; color: var(--c-brand-light); }
    .feedback-row { display:flex; gap:0.6rem; margin-bottom:0.6rem; }
    .feedback-row .col { flex:1; }
    .feedback-box input, .feedback-box textarea { width:100%; padding:0.6rem 0.75rem; border-radius:8px; border:1px solid rgba(255,255,255,0.06); background: rgba(0,0,0,0.45); color:var(--c-body); }
    .feedback-box textarea { min-height:110px; resize:vertical; }
    .feedback-actions { display:flex; gap:0.6rem; justify-content:flex-end; margin-top:0.6rem; }
    .btn-feedback { background:var(--c-brand); color:white; border:none; padding:0.6rem 1rem; border-radius:8px; cursor:pointer; }
    .btn-secondary { background:transparent; border:1px solid rgba(255,255,255,0.06); color:var(--c-body); padding:0.55rem 0.9rem; border-radius:8px; cursor:pointer; }
    .feedback-note { font-size:0.85rem; color:rgba(255,255,255,0.6); margin-top:0.4rem; }