/*** General ***/
* {
    box-sizing: border-box;
  }
  
  body {
    min-height: 100vh;
    background: linear-gradient(135deg, #2d3e50 0%, #d4881e 40%, #2893c2 100%);
    font-family: 'Montserrat', 'Inter', Arial, sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    /* fallback colore per browser senza gradienti */
    background-color: #2d3e50;
  }
  
  /*** Header */
  h1 {
    background-color: #fff;
    box-shadow: 0 2px 2px 2px rgba(0, 0, 0, 0.05);
    color: #231f20;
    font-size: 2.5rem;
    font-weight: 200;
    margin-bottom: 3rem;
    padding: 3rem 0;
    text-align: center;
    text-transform: uppercase;
  }
  h1 strong {
    font-weight: 700;
    margin-right: 1rem;
    position: relative;
  }
  h1 strong sup {
    font-size: 1rem;
    position: absolute;
  }
  
  /*** Container */
  .container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
  }
  
  /*** Card */
  .card {
    perspective: 500;
    cursor: pointer;
    display: inline-block;
    margin: 1rem;
  }
  .card:hover .inner {
    transform: rotateY(180deg);
  }
  .card .inner {
    transition: 0.6s;
    transform-style: preserve-3d;
    position: relative;
  }
  
  /*** Card common */
  .card,
  .front,
  .back {
    height: 250px;
    width: 180px;
  }
  
  .front,
  .back {
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    box-shadow: 0 2px 0 rgba(0, 0, 0, 0.06);
    left: 0;
    position: absolute;
    top: 0;
  }
  
  .pantone-tm {
    color: #231f20;
    font-size: 1rem;
    font-weight: 700;
    margin: 0.5rem 0;
    position: relative;
    text-transform: uppercase;
  }
  .pantone-tm sup {
    font-size: 0.7rem;
    position: absolute;
  }
  
  .color-info {
    font-size: 0.8rem;
    margin: 0.5rem 0;
  }
  
  /*** Card front */
  .front {
    z-index: 2;
  }
  
  .details {
    background-color: #fff;
    bottom: 0;
    height: 90px;
    padding: 10px;
    position: absolute;
    width: 100%;
  }
  
  .year {
    color: #fff;
    font-size: 2rem;
    font-weight: 700;
    position: absolute;
    right: 0;
    top: -28px;
  }
  
  /*** Card back */
  .back {
    transform: rotateY(180deg);
    background-color: #fff;
    padding: 1.5rem 1.5rem 0;
    text-align: center;
  }
  .back ul {
    margin-top: 1rem;
  }
  .back li {
    transition: color 0.3s;
    color: #888;
    font-weight: 700;
    font-size: 0.8rem;
    padding: 10px 5px;
    text-align: left;
  }
  .back li:hover {
    color: #231f20;
  }
  .back li:not(:last-child) {
    border-bottom: 1px solid #f0f0f0;
  }
  .back li span {
    font-weight: normal;
    float: right;
  }
  
  /*** Card colors */
  .pt-2023 .front {
    background-color: #be3455;
  }
  
  .pt-2022 .front {
    background-color: #6667ab;
  }
  
  .pt-2021a .front {
    background-color: #f5df4d;
  }
  
  .pt-2021b .front {
    background-color: #939597;
  }
  
  .pt-2020 .front {
    background-color: #0f4c81;
  }
  
  .pt-2019 .front {
    background-color: #ff6f61;
  }
  
  .pt-2018 .front {
    background-color: #5f4b8b;
  }
  
  .pt-2017 .front {
    background-color: #88b04b;
  }
  
  .pt-2016-a .front {
    background-color: #f7cac9;
  }
  
  .pt-2016-b .front {
    background-color: #8ca4cf;
  }
  
  .pt-2015 .front {
    background-color: #955251;
  }
  
  .pt-2014 .front {
    background-color: #b565a7;
  }
  
  .pt-2013 .front {
    background-color: #169c78;
  }
  
  .pt-2012 .front {
    background-color: #f05442;
  }
  
  .pt-2011 .front {
    background-color: #da4f70;
  }
  
  .pt-2010 .front {
    background-color: #41b6ab;
  }
  
  .pt-2009 .front {
    background-color: #f0bf59;
  }
  
  .pt-2008 .front {
    background-color: #595ca1;
  }
  
  .pt-2007 .front {
    background-color: #9c1b31;
  }
  
  .pt-2006 .front {
    background-color: #decdbf;
  }
  
  .pt-2005 .front {
    background-color: #4fb0ae;
  }
  
  .pt-2004 .front {
    background-color: #e4583e;
  }
  
  .pt-2003 .front {
    background-color: #7ac5c5;
  }
  
  .pt-2002 .front {
    background-color: #c02034;
  }
  
  .pt-2001 .front {
    background-color: #c94476;
  }
  
  .pt-2000 .front {
    background-color: #9bb7d6;
  }
  
  /*** Modernizzazione grafica ***/
  .glass-bg {
    position: fixed;
    left: 0; top: 0; right: 0; bottom: 0;
    z-index: 1;
    pointer-events: none;
    background: radial-gradient(ellipse at 60% 20%, rgba(40,147,194,0.25) 0%, rgba(45,62,80,0.42) 50%, rgba(45,62,80,0.62) 100%);
    filter: blur(24px) saturate(1.1);
  }
  
  main {
    position: relative;
    z-index: 10;
    background: rgba(255,255,255,0.13);
    border-radius: 32px;
    box-shadow: 0 12px 48px 0 rgba(31, 38, 135, 0.20), 0 2px 12px 0 rgba(40,147,194,0.08) inset;
    backdrop-filter: blur(28px) saturate(1.6);
    -webkit-backdrop-filter: blur(28px) saturate(1.6);
    border: 2.5px solid rgba(255,255,255,0.38);
    border-top: 2.5px solid rgba(255,255,255,0.7);
    border-bottom: 2.5px solid rgba(40,147,194,0.12);
    overflow: hidden;
    padding: 3.2rem 2.5rem 2.5rem 2.5rem;
    margin: 0 auto;
    max-width: 440px;
    width: 100%;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: box-shadow 0.3s, background 0.3s, border 0.3s;
    opacity: 0;
    transform: translateY(40px) scale(0.99);
    animation: glass-in 1.1s cubic-bezier(.26,.82,.57,1.01) 0.2s forwards;
  }
  @keyframes glass-in {
    0% { opacity: 0; transform: translateY(40px) scale(0.99); }
    80% { opacity: 1; transform: translateY(-6px) scale(1.03); }
    100% { opacity: 1; transform: translateY(0) scale(1); }
  }
  
  main::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 60px;
    border-radius: 32px 32px 0 0;
    background: linear-gradient(180deg, rgba(255,255,255,0.65) 0%, rgba(255,255,255,0.08) 100%);
    pointer-events: none;
    z-index: 2;
  }
  main::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 32px;
    box-shadow: 0 0 0 1.5px rgba(255,255,255,0.14) inset;
    pointer-events: none;
    z-index: 1;
  }
  .logo-bg {
    position: absolute;
    left: 50%;
    top: 44px;
    transform: translateX(-50%);
    width: 138px;
    height: 68px;
    background: radial-gradient(ellipse at 60% 40%, rgba(255,255,255,0.92) 0%, rgba(255,255,255,0.38) 70%, rgba(255,255,255,0.01) 100%);
    filter: blur(8px);
    border-radius: 50% 50% 40% 40% / 60% 60% 40% 40%;
    z-index: 5;
    pointer-events: none;
  }
  header { position: relative; z-index: 10; }
  message {
    display: block;
    margin: 1.5rem 0 2.5rem 0;
    padding: 1.2rem 2rem;
    background: rgba(40,147,194,0.12);
    border-radius: 16px;
    color: #1a2a33;
    font-family: 'Montserrat', 'Inter', Arial, sans-serif;
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    box-shadow: 0 2px 16px 0 rgba(40,147,194,0.06);
    border: 1px solid rgba(40,147,194,0.18);
  }
  
  #btn-options {
    margin: 0 auto;
    padding: 0.75rem 2.5rem;
    border-radius: 24px;
    border: none;
    background: linear-gradient(90deg, #2893c2 0%, #d4881e 100%);
    color: #fff;
    font-family: 'Montserrat', 'Inter', Arial, sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    box-shadow: 0 2px 8px 0 rgba(40,147,194,0.13);
    cursor: pointer;
    transition: background 0.3s, transform 0.2s, box-shadow 0.2s;
    outline: none;
    margin-bottom: 0.5rem;
  }
  #btn-options:hover, #btn-options:focus {
    background: linear-gradient(90deg, #d4881e 0%, #2893c2 100%);
    transform: translateY(-2px) scale(1.04);
    box-shadow: 0 6px 24px 0 rgba(40,147,194,0.18);
  }
  
  @media (hover: hover) and (pointer: fine) {
    main:hover {
      box-shadow: 0 18px 60px 0 rgba(31,38,135,0.28), 0 6px 24px 0 rgba(40,147,194,0.14) inset;
      transform: scale(1.017) translateY(-3px);
      border-color: rgba(255,255,255,0.5);
    }
    main:hover::before {
      background: linear-gradient(90deg, rgba(255,255,255,0.80) 0%, rgba(255,255,255,0.08) 100%);
    }
  }
  
  main .glass-reflection {
    position: absolute;
    top: 8px; left: 16px;
    width: 70%;
    height: 32px;
    background: linear-gradient(120deg, rgba(255,255,255,0.23) 0%, rgba(255,255,255,0.05) 80%);
    filter: blur(3px);
    border-radius: 24px 44px 24px 44px;
    opacity: 0.78;
    pointer-events: none;
    z-index: 3;
    animation: reflection-move 3.2s ease-in-out infinite alternate;
  }
  @keyframes reflection-move {
    0% { left: 16px; top: 8px; opacity: 0.68; }
    60% { left: 32%; top: 24px; opacity: 0.92; }
    100% { left: 52%; top: 18px; opacity: 0.65; }
  }
  
  @media (max-width: 600px) {
    main {
      padding: 1.5rem 0.5rem;
      max-width: 98vw;
      font-size: 1.06rem;
    }
    message {
      font-size: 0.98rem;
      padding: 0.8rem 0.5rem;
    }
    #btn-options {
      font-size: 0.95rem;
      padding: 0.7rem 1.3rem;
    }
    .description, .subtitle, message {
      font-size: 1.09em;
    }
  }