body {
    font-family: 'Inter', sans-serif;
    background-color: #111827;
    color: #F9FAFB;
    overflow-x: hidden;
}
#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
}
#main-header {
    transition: background-color 0.5s ease, backdrop-filter 0.5s ease, border-color 0.5s ease;
}
#main-header.scrolled {
    background-color: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.content-section {
    position: relative;
    z-index: 1;
    padding: 10vh 2rem;
    max-width: 800px;
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
#home.content-section {
    min-height: 100vh;
}
#end.content-section {
    min-height: 70vh;
}
.brand-card {
    background-color: rgba(255, 255, 255, 0.05); /* Highly transparent white */
    backdrop-filter: blur(16px); /* Increased blur for glass effect */
    border-radius: 1.5rem; /* Adjusted rounded corners */
    padding: 2rem; /* Shortened padding */
    margin-bottom: 5rem;
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
    border: 1px solid rgba(255, 255, 255, 0.1); /* Simple white border */
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37); /* Refined shadow for depth */
}
.brand-card.visible {
    opacity: 1;
    transform: translateY(0);
}
#inquiry .brand-card {
    background-color: rgba(255, 255, 255, 0.1); /* More distinct transparent white */
    border-color: rgba(255, 255, 255, 0.2);
}
.brand-title {
    display: inline-block;
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    background: linear-gradient(to right, #ffffff, #38bdf8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
}
.brand-description {
    font-size: 1.125rem;
    line-height: 1.75;
    color: #d1d5db;
}
.form-input {
    background-color: rgba(255, 255, 255, 0.05) !important;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.form-input:focus {
    border-color: rgba(56, 189, 248, 0.5) !important;
    box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.3) !important;
    outline: none;
}
.submit-button {
    background-image: linear-gradient(to right, #38bdf8, #818cf8, #a78bfa);
    background-size: 200% auto;
    transition: background-position 0.5s ease;
}
.submit-button:hover {
    background-position: right center;
}