@font-face {
    font-family: 'Altron';
    src: url('altron.ttf') format('truetype');
}
body {
    background-color: #0a0a0a;
    color: #e0e0e0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
}
#header {
    padding: 2rem;
    border-bottom: 1px solid #333;
    background: #111;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.brand-container {
    display: flex;
    align-items: center;
    gap: 15px;
}
.brand-name {
    font-family: 'Altron', sans-serif;
    font-size: 2rem;
    color: #ffffff;
    margin: 0;
    letter-spacing: 2px;
}
#main {
    max-width: 900px;
    margin: 4rem auto;
    padding: 0 2rem;
}
section {
    background: #151515;
    border: 1px solid #222;
    border-radius: 8px;
    padding: 2.5rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.5);
}
h2, h3 {
    color: #ffffff;
    margin-top: 0;
}
.button {
    display: inline-block;
    background: #2a2a2a;
    color: #fff;
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    border-radius: 4px;
    border: 1px solid #444;
    transition: all 0.2s ease;
}
.button:hover {
    background: #333;
    border-color: #666;
}
.row {
    display: flex;
    gap: 2rem;
}
.col-6 {
    flex: 1;
}
@media (max-width: 768px) {
    .row { flex-direction: column; gap: 1rem; }
    #header { flex-direction: column; align-items: flex-start; gap: 1rem; }
}

/* Vault Application Styles */
.vault-container {
    background: #111;
    border: 1px solid #333;
    border-radius: 8px;
    padding: 2rem;
    margin-top: 2rem;
}
.input-group {
    margin-bottom: 1.5rem;
}
.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #aaa;
    font-weight: bold;
}
.vault-input, .vault-textarea {
    width: 100%;
    background: #0a0a0a;
    border: 1px solid #444;
    color: #fff;
    padding: 1rem;
    border-radius: 4px;
    font-family: inherit;
    font-size: 1rem;
    box-sizing: border-box;
}
.vault-input:focus, .vault-textarea:focus {
    outline: none;
    border-color: #4a90e2;
}
.vault-textarea {
    min-height: 250px;
    resize: vertical;
}
.notes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}
.note-card {
    background: #1a1a1a;
    border: 1px solid #333;
    padding: 1.5rem;
    border-radius: 6px;
    cursor: pointer;
    transition: border-color 0.2s;
}
.note-card:hover {
    border-color: #666;
}
.note-card h4 {
    margin: 0 0 0.5rem 0;
    color: #fff;
}
.note-date {
    font-size: 0.85rem;
    color: #888;
}
.hidden {
    display: none !important;
}
.error-msg {
    color: #ff5555;
    margin-top: 1rem;
    font-size: 0.9rem;
}