/* --- DESIGN SYSTEM (INDIGO PRO) --- */
:root {
    --bg: #0f172a;
    --accent: #4f46e5;
    --accent-light: #818cf8;
    --text: #f1f5f9;
    --glass: rgba(30, 41, 59, 0.7);
    --border: rgba(255, 255, 255, 0.1);
}

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

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background-color: var(--bg);
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(79, 70, 229, 0.1) 0%, transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(99, 102, 241, 0.1) 0%, transparent 40%);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
}

/* --- ANIMACJE --- */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- TOPBAR --- */
nav {
    width: 100%;
    padding: 20px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    position: fixed;
    top: 0;
    z-index: 100;
}

.logo { font-weight: 800; color: var(--accent-light); font-size: 1.2rem; text-decoration: none; }

/* --- MAIN CONTAINER --- */
.container {
    max-width: 1000px;
    width: 90%;
    margin-top: 150px;
    text-align: center;
    animation: fadeIn 0.8s ease-out;
}

h1 {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    font-weight: 900;
    background: linear-gradient(to right, #fff, var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 20px;
    letter-spacing: -2px;
}

.tagline {
    font-size: 1.2rem;
    color: #94a3b8;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* --- PROGRESS BAR --- */
.progress-container {
    background: var(--glass);
    border: 1px solid var(--border);
    padding: 30px;
    border-radius: 20px;
    margin-bottom: 60px;
}

.progress-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-weight: 600;
}

.bar-bg {
    width: 100%;
    height: 12px;
    background: rgba(255,255,255,0.05);
    border-radius: 10px;
    overflow: hidden;
}

.bar-fill {
    width: 85%; /* AKTUALNY POSTĘP */
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--accent-light));
    box-shadow: 0 0 20px rgba(79, 70, 229, 0.4);
    border-radius: 10px;
    transition: width 1s ease-in-out;
}

/* --- FEATURES GRID --- */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 80px;
}

.card {
    background: var(--glass);
    border: 1px solid var(--border);
    padding: 30px;
    border-radius: 16px;
    text-align: left;
    transition: transform 0.3s ease;
}

.card:hover { transform: translateY(-5px); border-color: var(--accent); }
.card h3 { color: var(--accent-light); margin-bottom: 10px; }
.card p { color: #94a3b8; font-size: 0.95rem; }

/* --- FOOTER / CTAs --- */
.cta-group { display: flex; gap: 15px; justify-content: center; margin-bottom: 100px; }

.btn {
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 700;
    text-decoration: none;
    transition: 0.2s;
    cursor: pointer;
}

.btn-main { background: var(--accent); color: white; border: none; }
.btn-main:hover { background: var(--accent-light); box-shadow: 0 0 15px rgba(99, 102, 241, 0.3); }
.btn-sec { background: transparent; color: white; border: 1px solid var(--border); }
.btn-sec:hover { background: rgba(255,255,255,0.05); }

footer { padding: 40px; color: #475569; font-size: 0.8rem; }

.btn-stripe {
    background: #4f46e5; /* Twój kolor wiodący */
    color: #ffffff;
    padding: 14px 28px;
    border-radius: 10px;
    text-decoration: none;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    display: inline-block;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  }

  .btn-stripe:hover {
    background: #6366f1;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
  }