:root {
      --orange: #FF6B00;
      --orange-lt: #FF8C38;
      --orange-soft: rgba(255, 107, 0, .12);
      --dark: #0f172a;
      --text: #1a2236;
      --muted: #6b7a99;
      --border: rgba(0, 0, 0, .08);
      --bg: #f5f7fb;
      --dark2: #111827;
      --dark3: #1C2333;
      --muted-e: #8896AB;
      --radius: 14px;
      --radius-lg: 22px;
      --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: 'Poppins', sans-serif;
      color: var(--text);
      background: var(--bg);
      overflow-x: hidden;
      line-height: 1.7;
    }

    a {
      text-decoration: none;
      color: inherit;
    }

    ul {
      list-style: none;
    }

    img {
      display: block;
      max-width: 100%;
    }

    .container {
      width: min(1200px, 92%);
      margin: 0 auto;
    }

    ::-webkit-scrollbar {
      width: 6px;
    }

    ::-webkit-scrollbar-track {
      background: var(--bg);
    }

    ::-webkit-scrollbar-thumb {
      background: var(--orange);
      border-radius: 3px;
    }

    /* ── NAVBAR (exact match packages.html) ── */
    #navbar {
      position: fixed;
      left: 50%;
      transform: translateX(-50%);
      width: min(1340px, 100%);
      z-index: 9999;
      background: none;
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid var(--border);
      box-shadow: 0 10px 28px rgba(15, 23, 42, .10);
    }

    .nav-inner {
      height: 66px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 16px;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      text-decoration: none;
      color: inherit;
    }

    .brand-logo {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      overflow: hidden;
      background: #eef2ff;
    }

    .brand-logo img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .brand-text {
      font-family: 'Playfair Display', serif;
      font-size: 1.2rem;
      font-weight: 900;
    }

    .brand-text span {
      color: var(--orange);
    }

    .home-btn {
      text-decoration: none;
      color: #fff;
      border-radius: 999px;
      padding: 10px 16px;
      background: linear-gradient(135deg, var(--orange), var(--orange-lt));
      font-size: .84rem;
      font-weight: 600;
      box-shadow: 0 8px 20px rgba(255, 107, 0, .28);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    /* ── HERO (exact match packages.html structure & design) ── */
    .calc-hero {
      min-height: 88vh;
      display: flex;
      align-items: center;
      position: relative;
      padding: 120px 0 80px;
    }

    .hero-content {
      max-width: 760px;
      color: #fff;
      animation: fadeUp .8s ease both;
    }

    .hero-tag {
      display: inline-block;
      background: rgba(255, 255, 255, .14);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(255, 255, 255, .25);
      padding: 6px 14px;
      border-radius: 999px;
      font-size: .74rem;
      font-weight: 700;
      letter-spacing: .08em;
      text-transform: uppercase;
      margin-bottom: 14px;
    }

    .hero h1 {
      font-family: 'Playfair Display', serif;
      font-size: clamp(2rem, 5vw, 3.5rem);
      line-height: 1.18;
      margin-bottom: 16px;
    }

    .hero h1 span {
      color: #ffb27c;
    }

    .hero p {
      font-size: 1rem;
      opacity: .9;
      max-width: 620px;
      line-height: 1.8;
    }

    @keyframes fadeUp {
      from {
        opacity: 0;
        transform: translateY(24px);
      }

      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    /* ── CALCULATOR SECTION ── */
    .calc-section {
      padding: 60px 0 80px;
    }

    /* ── TOGGLE (pill style, horizontal always, square corners as requested) ── */
    .calc-toggle {
      display: flex;
      align-items: stretch;
      justify-content: center;
      background: #fff;
      border-radius: 10px;
      padding: 5px;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
      border: 1.5px solid var(--border);
      width: fit-content;
      margin: 0 auto 40px;
      gap: 4px;
    }

    .toggle-btn {
      padding: 11px 32px;
      border-radius: 7px;
      font-size: .88rem;
      font-weight: 600;
      background: transparent;
      color: var(--muted);
      border: none;
      cursor: pointer;
      transition: var(--transition);
      display: flex;
      align-items: center;
      gap: 8px;
      white-space: nowrap;
    }

    .toggle-btn.active {
      background: linear-gradient(135deg, var(--orange), var(--orange-lt));
      color: #fff;
      box-shadow: 0 4px 12px rgba(255, 107, 0, 0.3);
    }

    .toggle-btn i {
      font-size: .9rem;
    }

    /* Calculator Cards */
    .calc-container {
      max-width: 900px;
      margin: 0 auto;
      background: #fff;
      border-radius: var(--radius-lg);
      border: 1.5px solid var(--border);
      box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
      overflow: hidden;
      animation: cardIn .6s ease both;
    }

    @keyframes cardIn {
      from {
        opacity: 0;
        transform: translateY(20px);
      }

      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    .calc-header {
      background: linear-gradient(135deg, var(--dark2), var(--dark3));
      padding: 32px 28px;
      color: #fff;
      position: relative;
      overflow: hidden;
    }

    .calc-header::after {
      content: '';
      position: absolute;
      bottom: -30px;
      right: -30px;
      width: 150px;
      height: 150px;
      border-radius: 50%;
      background: rgba(255, 107, 0, 0.08);
    }

    .calc-header h2 {
      font-family: 'Playfair Display', serif;
      font-size: 1.8rem;
      font-weight: 900;
      margin-bottom: 6px;
      position: relative;
      z-index: 2;
    }

    .calc-header p {
      color: var(--muted-e);
      font-size: .88rem;
      position: relative;
      z-index: 2;
    }

    .calc-body {
      padding: 32px 28px;
    }

    /* Unit Calculator */
    .unit-calc {
      display: block;
    }

    .unit-calc.hidden {
      display: none;
    }

    .input-group {
      margin-bottom: 24px;
    }

    .input-label {
      font-size: .88rem;
      font-weight: 600;
      color: var(--text);
      margin-bottom: 10px;
      display: block;
    }

    .input-wrapper {
      position: relative;
    }

    .input-field {
      width: 100%;
      padding: 14px 50px 14px 16px;
      border: 2px solid var(--border);
      border-radius: var(--radius);
      font-size: 1rem;
      font-family: 'Poppins', sans-serif;
      color: var(--text);
      background: #fff;
      transition: var(--transition);
    }

    .input-field:focus {
      outline: none;
      border-color: var(--orange);
      box-shadow: 0 0 0 3px var(--orange-soft);
    }

    .input-suffix {
      position: absolute;
      right: 16px;
      top: 50%;
      transform: translateY(-50%);
      font-size: .88rem;
      font-weight: 600;
      color: var(--orange);
      pointer-events: none;
    }

    /* Appliance Calculator */
    .appliance-calc {
      display: none;
    }

    .appliance-calc.active {
      display: block;
    }

    /* 
  10 appliance cards: use 2-col on desktop so all rows are even (5×2).
  No orphan / empty space.
*/
    .appliances-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-bottom: 28px;
    }

    .appliance-card {
      background: var(--bg);
      border-radius: var(--radius);
      padding: 16px;
      border: 2px solid var(--border);
      transition: var(--transition);
    }

    .appliance-card:hover {
      border-color: var(--orange-soft);
    }

    .appliance-card.active {
      border-color: var(--orange);
      background: var(--orange-soft);
    }

    .appliance-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 12px;
    }

    .appliance-icon {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--orange), var(--orange-lt));
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 1.1rem;
      flex-shrink: 0;
    }

    .appliance-info {
      flex: 1;
    }

    .appliance-name {
      font-size: .9rem;
      font-weight: 600;
      color: var(--text);
      line-height: 1.3;
    }

    .appliance-watt {
      font-size: .75rem;
      color: var(--muted);
      font-weight: 500;
    }

    .appliance-inputs {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
    }

    .appliance-input-group {
      position: relative;
    }

    .appliance-input-label {
      font-size: .72rem;
      font-weight: 600;
      color: var(--muted);
      margin-bottom: 4px;
      display: block;
      text-transform: uppercase;
      letter-spacing: .05em;
    }

    .appliance-input {
      width: 100%;
      padding: 8px 10px;
      border: 1.5px solid var(--border);
      border-radius: 8px;
      font-size: .88rem;
      font-family: 'Poppins', sans-serif;
      color: var(--text);
      background: #fff;
      transition: var(--transition);
    }

    .appliance-input:focus {
      outline: none;
      border-color: var(--orange);
      box-shadow: 0 0 0 2px var(--orange-soft);
    }

    /* Calculate Button */
    .calc-btn {
      width: 100%;
      padding: 16px;
      background: linear-gradient(135deg, var(--orange), var(--orange-lt));
      color: #fff;
      border: none;
      border-radius: var(--radius);
      font-size: 1rem;
      font-weight: 700;
      cursor: pointer;
      transition: var(--transition);
      box-shadow: 0 8px 20px rgba(255, 107, 0, 0.3);
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
    }

    .calc-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 28px rgba(255, 107, 0, 0.4);
    }

    .calc-btn:active {
      transform: translateY(0);
    }

    .calc-btn i {
      font-size: 1.1rem;
    }

    /* Results Section */
    .results-section {
      margin-top: 32px;
      padding-top: 32px;
      border-top: 2px dashed var(--border);
      display: none;
      animation: fadeIn .5s ease both;
    }

    .results-section.active {
      display: block;
    }

    @keyframes fadeIn {
      from {
        opacity: 0;
      }

      to {
        opacity: 1;
      }
    }

    .results-header {
      text-align: center;
      margin-bottom: 28px;
    }

    .results-icon {
      width: 60px;
      height: 60px;
      border-radius: 50%;
      background: linear-gradient(135deg, #10b981, #059669);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 1.8rem;
      margin: 0 auto 12px;
      box-shadow: 0 8px 20px rgba(16, 185, 129, 0.3);
    }

    .results-title {
      font-family: 'Playfair Display', serif;
      font-size: 1.6rem;
      font-weight: 900;
      color: var(--text);
      margin-bottom: 6px;
    }

    .results-subtitle {
      font-size: .88rem;
      color: var(--muted);
    }

    .results-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 16px;
      margin-bottom: 24px;
    }

    .result-card {
      background: var(--bg);
      border-radius: var(--radius);
      padding: 20px;
      text-align: center;
      border: 2px solid var(--border);
      transition: var(--transition);
    }

    .result-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
      border-color: var(--orange-soft);
    }

    .result-label {
      font-size: .75rem;
      font-weight: 700;
      color: var(--muted);
      text-transform: uppercase;
      letter-spacing: .08em;
      margin-bottom: 8px;
    }

    .result-value {
      font-family: 'Playfair Display', serif;
      font-size: 2rem;
      font-weight: 900;
      color: var(--orange);
      line-height: 1;
    }

    .result-value span {
      font-size: 1rem;
      font-weight: 600;
      color: var(--text);
    }

    .result-subtext {
      font-size: .8rem;
      color: var(--muted);
      margin-top: 6px;
    }

    /* Load Summary */
    .load-summary {
      background: linear-gradient(135deg, rgba(16, 185, 129, 0.08), rgba(5, 150, 105, 0.08));
      border: 2px solid rgba(16, 185, 129, 0.2);
      border-radius: var(--radius);
      padding: 20px;
      margin-bottom: 24px;
    }

    .load-summary-title {
      font-size: .88rem;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .load-summary-title i {
      color: #10b981;
    }

    .load-summary-stats {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-bottom: 12px;
    }

    .load-stat {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 10px 14px;
      background: rgba(255, 255, 255, 0.7);
      border-radius: 8px;
    }

    .load-stat-label {
      font-size: .82rem;
      color: var(--muted);
      font-weight: 500;
    }

    .load-stat-value {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text);
    }

    .load-stat-value span {
      font-size: .8rem;
      font-weight: 600;
      color: var(--orange);
    }

    .load-message {
      font-size: .85rem;
      color: #059669;
      line-height: 1.6;
      padding: 12px;
      background: rgba(255, 255, 255, 0.6);
      border-radius: 8px;
      border-left: 3px solid #10b981;
    }

    .load-message i {
      margin-right: 6px;
    }

    /* Warning */
    .warning-box {
      background: rgba(239, 68, 68, 0.08);
      border: 2px solid rgba(239, 68, 68, 0.2);
      border-radius: var(--radius);
      padding: 16px;
      margin-bottom: 24px;
      display: none;
    }

    .warning-box.active {
      display: block;
    }

    .warning-box i {
      color: #ef4444;
      margin-right: 8px;
    }

    .warning-text {
      font-size: .88rem;
      color: #991b1b;
      line-height: 1.6;
    }

    /* CTA Buttons */
    .cta-buttons {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }

    .cta-btn {
      padding: 14px 20px;
      border-radius: var(--radius);
      font-size: .88rem;
      font-weight: 600;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      cursor: pointer;
      transition: var(--transition);
      text-decoration: none;
    }

    .cta-btn-primary {
      background: linear-gradient(135deg, var(--orange), var(--orange-lt));
      color: #fff;
      border: none;
      box-shadow: 0 6px 18px rgba(255, 107, 0, 0.3);
    }

    .cta-btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(255, 107, 0, 0.4);
    }

    .cta-btn-secondary {
      background: #25D366;
      color: #fff;
      border: none;
      box-shadow: 0 6px 18px rgba(37, 211, 102, 0.3);
    }

    .cta-btn-secondary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(37, 211, 102, 0.4);
      background: #1fb855;
    }

    /* ── FOOTER (exact match packages.html) ── */
    footer {
      background: #0b1222;
      color: #d0d8ea;
      border-top: 1px solid rgba(255, 255, 255, .1);
      padding: 26px 0;
      text-align: center;
      font-size: .88rem;
    }

    footer strong {
      color: #fff;
    }

    /* ── RESPONSIVE ── */
    @media(max-width:680px) {
      #navbar {
        width: 100%;
      }

      .nav-inner {
        height: 58px;
        padding: 0 12px;
      }

      .home-btn {
        padding: 9px 12px;
      }

      .home-btn span {
        display: none;
      }

      .calc-hero {
        min-height: 78vh;
        padding-top: 96px;
      }

      /* Toggle: keep horizontal row, fill width nicely */
      .calc-toggle {
        width: 90%;
        flex-direction: row;
        justify-content: stretch;
      }

      .toggle-btn {
        flex: 1;
        justify-content: center;
        padding: 10px 10px;
        font-size: .8rem;
      }

      /* Appliances: 1 col on mobile */
      .appliances-grid {
        grid-template-columns: 1fr;
      }

      .results-grid {
        grid-template-columns: 1fr;
      }

      .cta-buttons {
        grid-template-columns: 1fr;
      }

      .load-summary-stats {
        grid-template-columns: 1fr;
      }
    }

    @media(min-width:681px) and (max-width:900px) {

      /* On tablet keep 2-col for appliances — still even */
      .appliances-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }