/* --- Basic Reset and Variables --- */
:root {
    --trezor-blue: #3498db;
    --dark-bg: #2c3e50;
    --light-text: #ecf0f1;
    --card-bg: #34495e;
    --cta-color: #2ecc71;
}

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

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    background-color: var(--dark-bg);
    color: var(--light-text);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* --- Header & Typography --- */
header {
    background-color: #1a242f;
    padding: 20px 0;
    text-align: center;
    border-bottom: 5px solid var(--trezor-blue);
}

h1 a {
    color: var(--light-text);
    text-decoration: none;
    font-size: 2.2em;
}

.tagline {
    font-size: 1.1em;
    color: #bdc3c7;
    margin-top: 5px;
}

h2 {
    color: var(--trezor-blue);
    text-align: center;
    margin-bottom: 30px;
    font-size: 1.8em;
}

/* --- Content Sections --- */
section {
    padding: 60px 0;
}

.content-box {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

/* --- Setup Grid --- */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.step-card {
    background-color: var(--dark-bg);
    padding: 25px;
    border-radius: 8px;
    text-align: center;
    border-left: 5px solid var(--trezor-blue);
    transition: transform 0.3s ease;
}

.step-card:hover {
    transform: translateY(-5px);
}

/* --- Security List --- */
#security-features ul {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

#security-features li {
    background-color: var(--dark-bg);
    padding: 15px 20px;
    border-radius: 5px;
    border-left: 4px solid var(--cta-color);
}

/* --- CTA Section --- */
#cta {
    text-align: center;
    padding: 50px 0;
    background-color: var(--trezor-blue);
}

.cta-box h3 {
    margin-bottom: 20px;
    color: var(--light-text);
    font-size: 1.5em;
}

.button-cta {
    display: inline-block;
    background-color: var(--cta-color);
    color: var(--dark-bg);
    padding: 15px 30px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    font-size: 1.1em;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.button-cta:hover {
    background-color: #27ae60;
    transform: scale(1.05);
}

/* --- Footer --- */
footer {
    text-align: center;
    padding: 20px 0;
    background-color: #1a242f;
    border-top: 1px solid #34495e;
    font-size: 0.9em;
    color: #95a5a6;
}

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

.animated-section {
    animation: fadeIn 1.2s ease-out;
    /* Delay different sections for a staggered look */
}

#security-features {
    animation-delay: 0.3s;
}

/* Optional: Stagger the step cards */
.step-card:nth-child(1) { animation-delay: 0.4s; }
.step-card:nth-child(2) { animation-delay: 0.6s; }
.step-card:nth-child(3) { animation-delay: 0.8s; }
.step-card:nth-child(4) { animation-delay: 1.0s; }