:root {
      --dark-gray: #1a1a1a;
      --light-gray: #f5f5f7;
      --accent: #000000;
      --border-color: rgba(0, 0, 0, 0.1);
      --success: #22c55e;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: white;
    color: var(--dark-gray);
    scroll-behavior: smooth;
}

h1, h2, h3, .nav-logo {
    font-family: 'Space Grotesk', sans-serif;
    letter-spacing: -0.02em;
}

.section-dark {
    background-color: var(--dark-gray);
    color: white;
}

.section-light {
    background-color: var(--light-gray);
    color: var(--dark-gray);
}

.glass-nav {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--border-color);
}

.btn-primary {
    background-color: var(--accent);
    color: white;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--accent);
    border-color: var(--accent);
}

.line-accent {
    width: 40px;
    height: 2px;
    background-color: var(--accent);
    margin-bottom: 1.5rem;
}

.line-accent-white {
    width: 40px;
    height: 2px;
    background-color: white;
    margin-bottom: 1.5rem;
}

/* --- ANIMACJA REGENERACJI Z REAKTYWNYMI DANYMI I PASKIEM --- */

@keyframes battery-charge {
    0%, 5% { height: 15%; background: linear-gradient(180deg,rgba(25, 175, 236, 1) 0%, rgba(185, 243, 105, 1) 100%);}
    45% { height: 95%; background: linear-gradient(180deg,rgba(25, 175, 236, 1) 0%, rgba(185, 243, 105, 1) 100%); }
    50%, 90% { height: 100%; background: linear-gradient(180deg,rgba(25, 175, 236, 1) 0%, rgba(185, 243, 105, 1) 100%); box-shadow: 0 0 20px rgba(0,0,0,0.1); }
    100% { height: 15%; background-color: #333; }
}

@keyframes liquid-flow {
    0% { transform: translateX(-50%) skewX(0deg); }
    50% { transform: translateX(-30%) skewX(5deg); }
    100% { transform: translateX(-50%) skewX(0deg); }
}

@keyframes scan-glow {
    0% { top: 0%; opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { top: 100%; opacity: 0; }
}

@keyframes text-success-fade {
    0%, 49% { opacity: 0; transform: translateY(5px); }
    50%, 89% { opacity: 1; transform: translateY(0); }
    90%, 100% { opacity: 0; transform: translateY(-5px); }
}

@keyframes status-diagnostic-fade {
    0%, 49% { opacity: 1; }
    50%, 89% { opacity: 0; }
    90%, 100% { opacity: 1; }
}

.battery-fill {
    animation: battery-charge 10s infinite cubic-bezier(0.65, 0, 0.35, 1);
}

.liquid {
    position: absolute;
    top: -5px;
    left: 50%;
    width: 150%;
    height: 20px;
    background: rgba(255,255,255,0.1);
    border-radius: 40%;
    animation: liquid-flow 3s infinite linear;
}

.scanner {
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: rgba(0,0,0,0.15);
    z-index: 30;
    animation: scan-glow 4s infinite ease-in-out;
}

.battery-glass {
    background: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(0,0,0,0.05);
}

.success-label {
    animation: text-success-fade 10s infinite;
}

.diagnostic-label {
    animation: status-diagnostic-fade 10s infinite;
}
canvas#comparisonChart {
    height: 200px !important;
}
/* Reaktywne liczby i paski postępu */
@keyframes volt-counter {
    0%, 5% { content: "38.2V"; }
    15% { content: "42.1V"; }
    30% { content: "48.5V"; }
    45% { content: "53.9V"; }
    50%, 90% { content: "54.4V"; }
    100% { content: "38.2V"; }
}

@keyframes soh-counter {
    0%, 49% { content: "OBLICZANIE..."; color: #999; }
    50%, 90% { content: "98.4% (ODZYSKANO)"; color: var(--accent); }
    100% { content: "OBLICZANIE..."; }
}

/* Animacja kreseczek postępu */
@keyframes bar-counter {
    0%, 5% { content: "[|---------]"; }
    10% { content: "[||--------]"; }
    20% { content: "[|||-------]"; }
    30% { content: "[|||||-----]"; }
    40% { content: "[||||||||--]"; }
    50%, 90% { content: "[||||||||||]"; color: var(--accent); }
    100% { content: "[|---------]"; }
}

.volt-value::after { content: "38.2V"; animation: volt-counter 10s infinite step-end; }
.soh-value::after { content: "---"; animation: soh-counter 10s infinite step-end; }
.bar-visual::after { content: "[----------]"; animation: bar-counter 10s infinite step-end; }

@media (max-width: 1024px) {
  .mob-h2 {
    align-items: flex-start !important;
  }
  canvas#comparisonChart {
    max-width: 100%;
  }
  .mob-h2-2{
    text-align: left;
  }
  .line-accent-mob {
    margin-left: 0 !important;
    text-align: left !important; 
  }
  .nav-logo img {
    width: 94px;
    height: auto !important;
    padding: 15px 0 !important;
  }
  .mob-footer{
    text-align: center;
  }
}