html{
    background-color: #000;
}

* {
    box-sizing: border-box;
}

/* Base Page Styling with a beautiful background to refract */
body { 
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; 
    max-width: 100vw;
    padding-left: 30vw;
    padding-right: 30vw;
    padding-top: 5vh;
    padding-bottom: 5vh;
    margin: 40px auto;
    color: #fff;
    background: linear-gradient(rgb(0, 0, 0), rgb(35, 30, 39));

    /* A colorful, high-contrast background is REQUIRED to see clear glass properly */
    background-image: linear-gradient(rgb(0, 0, 0), rgb(35, 30, 39));
}

/* -------------------------------------- */
/* CLEAR LIQUID GLASS BOX EFFECT          */
/* -------------------------------------- */

/* 1. The Container */
.liquid-glass-box {
    position: relative;
    border-radius: 32px; 
    padding: 35px;
    margin-bottom: 25px;
    z-index: 1; 
    
    /* CRITICAL: This clips the stretched glass layer so it stays perfectly inside the borders */
    overflow: hidden;
    
    /* Specular Highlights (Borders acting as light reflections) */
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-top: 1.5px solid rgba(255, 255, 255, 0.5);
    border-left: 1.5px solid rgba(255, 255, 255, 0.3);
    
    /* Shadows for Depth */
    box-shadow: 
        0 25px 45px rgba(0, 0, 0, 0.2), 
        inset 0 0 20px rgba(255, 255, 255, 0.2), 
        inset 2px 2px 5px rgba(255, 255, 255, 0.3);
}

/* 2. The Glass Background */
.liquid-glass-box::before {
    content: '';
    position: absolute;
    /* Stretch outside the box so the heavy distortion doesn't show ugly cut-off edges */
    top: -40px; left: -40px; right: -40px; bottom: -40px; 
    z-index: -1; 
    
    /* A subtle tint so the glass feels physical */
    background: rgba(255, 255, 255, 0.03); 
    
    /* STEP A: Pull the background image into the box and blur it slightly */
    backdrop-filter: blur(22px) saturate(180%);
    -webkit-backdrop-filter: blur(22px) saturate(180%);
    
    /* STEP B: Apply the SVG liquid waves to that captured background! */
    filter: url('#liquid-glass');
}
/* -------------------------------------- */
/* Form Elements Styling                  */
/* -------------------------------------- */
.row { 
    margin-bottom: 15px; 
    display: flex; 
    gap: 10px; 
    align-items: center; 
    width: 100%; /* FIXED: This lets the row stretch across the whole box */
}

/* ADD THIS NEW BLOCK: Tells the inputs to share all the empty space evenly */
.row input[type="text"],
.row input[type="number"],
.row select {
    flex: 1;
    min-width: 0;
}

/* Make inputs look like carved glass */
input, select { 
    padding: 12px; 
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-top: 1px solid rgba(0, 0, 0, 0.2);
    border-left: 1px solid rgba(0, 0, 0, 0.2);
    background: rgba(0, 0, 0, 0.15); 
    color: #fff;
    outline: none;
    font-size: 14px;
    transition: all 0.3s ease;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
}

input::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

input:focus, select:focus {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.4);
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.2), 0 0 8px rgba(255,255,255,0.2);
}

/* -------------------------------------- */
/* CUSTOM DROPDOWN STYLING                */
/* -------------------------------------- */

/* 1. Style the Select Box */
select {
    /* Hide the ugly default browser arrow */
    appearance: none; 
    -webkit-appearance: none;
    -moz-appearance: none;
        border-radius: 15px;

    /* Add a clean, custom white SVG arrow */
    background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23FFFFFF%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E");
    background-repeat: no-repeat;
    background-position: right 12px top 50%; /* Position the arrow on the right */
    background-size: 10px auto; /* Size of the arrow */
    padding-right: 35px; /* Make room for the new arrow so text doesn't overlap it */
    cursor: pointer;
}

/* 2. Style the Options Menu */
select option {
    /* Gives the opened menu a dark background so white text is readable */
    background: #2e2b3d; 
    color: white;
    padding: 10px;
    font-size: 14px;
        border-radius: 15px;

}


/* Glassy Buttons */
.btn-add { 
    padding: 10px 15px; 
    cursor: pointer; 
    background: rgba(255, 255, 255, 0.1); 
    border: 1px solid rgba(255, 255, 255, 0.3); 
    color: #fff;
    border-radius: 12px; 
    font-weight: 500;
    transition: all 0.2s;
    backdrop-filter: blur(10px);
}

.btn-add:hover {
    background: rgba(255, 255, 255, 0.2); 
    transform: translateY(-1px);
}

.btn-submit { 
    padding: 15px 20px; 
    cursor: pointer; 
    background: linear-gradient(135deg, rgba(0, 162, 255, 0.9), rgba(0, 129, 204, 0.9));
    color: white; 
    border: 1px solid rgba(255, 255, 255, 0.4); 
    font-size: 16px; 
    font-weight: bold;
    border-radius: 16px; 
    width: 100%; 
    margin-top: 15px; 
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2), inset 0 1px 2px rgba(255,255,255,0.5);
    text-shadow: 0 1px 2px rgba(0,0,0,0.3);
    transition: transform 0.2s;
}

.btn-submit:hover {
    transform: translateY(-2px);
}

/* Remove Button Styling */
.btn-remove {
    background: rgba(255, 59, 48, 0.3); 
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 10px;
    width: 40px;
    height: 40px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    flex-shrink: 0; 
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.btn-remove:hover {
    background: rgba(255, 59, 48, 0.7);
    transform: scale(1.05);
}

hr { 
    border: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.3), transparent);
    margin: 30px 0; 
}

h2, h3, h4, p, label {
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    letter-spacing: 0.5px;
}

/* -------------------------------------- */
/* MOBILE RESPONSIVENESS                  */
/* -------------------------------------- */
@media (max-width: 600px) {
    /* 1. Reduce the massive body margins */
    body {
        margin: 0;
        padding: 15px;
    }

    /* 2. Shrink the glass box padding so it fits the screen */
    .liquid-glass-box {
        padding: 20px;
        border-radius: 24px; 
    }

    /* 3. Reduce the hidden background stretch */
    .liquid-glass-box::before {
        top: -20px; left: -20px; right: -20px; bottom: -20px; 
    }

    /* 4. Allow the rows to wrap onto multiple lines */
    .row {
        flex-wrap: wrap;
        gap: 8px;
        margin-bottom: 20px; /* Extra space between people */
    }

    /* 5. Force the Name inputs to take up the whole top line */
    .row input[type="text"] {
        flex: 1 1 100%;
    }

    /* 6. Make the Cost and Dropdowns share the bottom line */
    .row input[type="number"], 
    .row select {
        flex: 1 1 40%;
    }

    /* 7. Keep the remove button perfectly square on the right */
    .btn-remove {
        flex: 0 0 40px; 
    }

    /* 8. Tweak font sizes for smaller screens */
    h2 { font-size: 22px; }
    h3 { font-size: 18px; }
}
/* Overwrites the browser's default white/blue autofill background */
input:-webkit-autofill,
input:-webkit-autofill:hover, 
input:-webkit-autofill:focus {
    -webkit-text-fill-color: white !important;
    -webkit-box-shadow: 0 0 0px 1000px rgba(0, 0, 0, 0.3) inset !important;
    transition: background-color 5000s ease-in-out 0s;
}