/* PAGE BACKGROUND */
body.index-page {
    min-height: 100vh;
    background: linear-gradient(
        135deg,
        #000000 0%,
        #2e2e2e 25%,
        #b5b5b5 50%,
        #2e2e2e 75%,
        #000000 100%
    );
    background-attachment: fixed;
}

/* HERO SECTION TRANSPARENT */
.hero.section {
    background: transparent;
}

/* CARD 3D EFFECT */
.card {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(12px);
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.15);
    box-shadow:
        0 15px 35px rgba(0,0,0,0.6),
        inset 0 1px 1px rgba(255,255,255,0.15);
    transform: perspective(1000px) translateZ(0);
}

/* FORM CONTROLS 3D LOOK */
.form-control {
    background: linear-gradient(145deg, #1c1c1c, #3a3a3a);
    border: 1px solid rgba(255,255,255,0.2);
    color: #fff;
    box-shadow:
        inset 2px 2px 6px rgba(0,0,0,0.8),
        inset -2px -2px 6px rgba(255,255,255,0.1),
        0 4px 10px rgba(0,0,0,0.6);
    border-radius: 10px;
    transition: all 0.3s ease;
}

/* PLACEHOLDER COLOR */
.form-control::placeholder {
    color: #ccc;
}

/* FORM CONTROL FOCUS */
.form-control:focus {
    background: linear-gradient(145deg, #222, #444);
    border-color: #c0c0c0;
    color: #fff;
    box-shadow:
        inset 2px 2px 6px rgba(0,0,0,0.9),
        inset -2px -2px 6px rgba(255,255,255,0.15),
        0 0 0 3px rgba(192,192,192,0.25);
}

/* LABEL COLOR */
label {
    color: #e0e0e0;
    font-weight: 500;
}

/* BUTTON STYLE */
.btn-primary {
    background: linear-gradient(145deg, #1f1f1f, #4f4f4f);
    border: 1px solid rgba(255,255,255,0.3);
    box-shadow:
        0 6px 15px rgba(0,0,0,0.8),
        inset 1px 1px 2px rgba(255,255,255,0.2);
    border-radius: 12px;
}

.btn-primary:hover {
    background: linear-gradient(145deg, #2a2a2a, #6a6a6a);
    transform: translateY(-2px);
}

/* TEXT COLORS */
h3 {
    color: #f0f0f0;
}

/* ERROR ALERT */
.alert-danger {
    background: rgba(255, 0, 0, 0.15);
    border: 1px solid rgba(255, 0, 0, 0.4);
    color: #ffdede;
}