:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(to right, #4facfe 0%, #00f2fe 100%);
    --glass-bg: rgba(255, 255, 255, 0.75);
    --glass-border: rgba(255, 255, 255, 0.4);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    --input-bg: rgba(255, 255, 255, 0.9);
    --primary-color: #4a90e2; 
    --text-color: #2d3748;
}

/* Background Wrapper */
#modern-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: #fdfbfb;
    background-image: linear-gradient(120deg, #fdfbfb 0%, #ebedee 100%);
    overflow: hidden;
}

/* Decorative Orbs */
.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.6;
    animation: float 20s infinite ease-in-out;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: #a18cd1;
    top: -100px;
    left: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 300px;
    height: 300px;
    background: #fbc2eb;
    bottom: -50px;
    right: -50px;
    animation-delay: -5s;
}

.orb-3 {
    width: 200px;
    height: 200px;
    background: #8fd3f4;
    top: 40%;
    right: 20%;
    animation-delay: -10s;
}

@keyframes float {
    0% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(30px, 50px) rotate(10deg); }
    100% { transform: translate(0, 0) rotate(0deg); }
}

/* Glassmorphism Card */
.glass-card {
    background: var(--glass-bg) !important;
    backdrop-filter: blur(12px) !important;
    -webkit-backdrop-filter: blur(12px) !important;
    border: 1px solid var(--glass-border) !important;
    box-shadow: var(--glass-shadow) !important;
    border-radius: 20px !important;
}

/* Typography Overrides */
.card-title {
    font-weight: 700 !important;
    letter-spacing: -0.5px;
    color: #4a5568 !important;
}

/* Form Controls */
.form-control {
    background: var(--input-bg) !important;
    border: 1px solid rgba(0,0,0,0.05) !important;
    border-radius: 12px !important;
    padding: 12px 15px !important;
    transition: all 0.3s ease;
}

.form-control:focus {
    box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.2) !important;
    border-color: #4299e1 !important;
    transform: translateY(-1px);
}

/* Buttons */
.btn-primary {
    background-image: var(--primary-gradient) !important;
    border: none !important;
    border-radius: 12px !important;
    padding: 12px !important;
    font-weight: 600;
    letter-spacing: 0.5px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.btn-primary:active {
    transform: translateY(0);
}

/* Links */
a {
    color: var(--primary-color) !important;
    text-decoration: none !important;
    transition: color 0.2s;
}

a:hover {
    color: #2b6cb0 !important;
    text-decoration: underline !important;
}

/* Checkbox */
.form-check-input:checked {
    background-color: var(--primary-color) !important;
    border-color: var(--primary-color) !important;
}

/* Utility to ensure full height centering matches the new background */
.h-100vh {
    min-height: 100vh;
}