:root {
    --primary-color: #096B68;
    --primary-hover: #096B68;
    --secondary-color: #6C757D;
    --background-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    --default-font: "Roboto", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
    --heading-font: "Nunito", sans-serif;
    --nav-font: "Poppins", sans-serif;
}

body {
    font-family: var(--default-font);
    background: var(--background-gradient);
    background-size: 300% 300%;
    animation: gradientShift 8s ease infinite;
    min-height: 100vh;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.container-xxl {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.authentication-wrapper {
    width: 100%;
    max-width: 500px;
    padding: 20px;
}

.card {
    border: none;
    border-radius: 20px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
    backdrop-filter: blur(20px);
    background: rgba(255, 255, 255, 0.95);
    animation: slideUp 0.8s ease forwards;
    transform: translateY(30px);
    opacity: 0;
}

@keyframes slideUp {
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.card-body {
    padding: 40px;
}

.app-brand img {
    transition: transform 0.3s ease;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

.app-brand a:hover img {
    transform: scale(1.05);
}

.brand-text {
    font-size: 28px;
    font-family: var(--heading-font);
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -0.5px;
    transition: color 0.3s ease;
}

.app-brand a:hover .brand-text {
    color: var(--primary-color);
}

h4 {
    color: #2c3e50;
    font-family: var(--heading-font);
    font-weight: 700;
    margin-bottom: 8px;
}

.mb-2 p {
    color: var(--secondary-color);
    font-size: 15px;
    font-family: var(--default-font);
}

.form-label {
    color: #495057;
    font-family: var(--nav-font);
    font-weight: 600;
    margin-bottom: 8px;
}

.form-control {
    border: 2px solid #e9ecef;
    border-radius: 12px;
    padding: 12px 16px;
    font-size: 15px;
    transition: all 0.3s ease;
    background: #f8f9fa;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.15);
    background: white;
    transform: translateY(-2px);
}

.input-group-merge {
    position: relative;
}

.input-group-text {
    border: 2px solid #e9ecef;
    border-left: none;
    border-radius: 0 12px 12px 0;
    background: #f8f9fa;
    transition: all 0.3s ease;
}

.form-control:focus + .input-group-text {
    border-color: var(--primary-color);
    background: white;
}

.cursor-pointer {
    cursor: pointer;
}

.cursor-pointer:hover {
    color: var(--primary-color);
}

.fc-color {
    color: var(--primary-color) !important;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.fc-color:hover {
    color: var(--primary-hover) !important;
}

.btn-success {
    background: linear-gradient(135deg, var(--primary-color), #34ce57);
    border: none;
    border-radius: 12px;
    padding: 12px 24px;
    font-family: var(--nav-font);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-success::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 30px rgba(40, 167, 69, 0.3);
}

.btn-success:hover::before {
    left: 100%;
}

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

.btn-outline-dark {
    border: 2px solid #dee2e6;
    border-radius: 12px;
    padding: 10px 20px;
    color: #495057;
    font-family: var(--nav-font);
    font-weight: 500;
    transition: all 0.3s ease;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-outline-dark:hover {
    background: #f8f9fa;
    border-color: #adb5bd;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    color: #495057;
}

.btn-outline-dark img {
    transition: transform 0.3s ease;
}

.btn-outline-dark:hover img {
    transform: scale(1.1);
}

.list-group-horizontal {
    border: none;
}

.list-group-item {
    border: none;
    background: transparent;
    padding: 0;
}

.text-center.my-1 {
    color: var(--secondary-color);
    font-size: 14px;
    margin: 15px 0 !important;
    position: relative;
}

.mb-3:last-child {
    text-align: center;
    color: var(--secondary-color);
    font-size: 14px;
    margin-top: 20px;
}

.text-underline {
    text-decoration: underline;
}

/* Responsive adjustments */
@media (max-width: 576px) {
    .card-body {
        padding: 30px 25px;
    }
    
    .authentication-wrapper {
        padding: 15px;
    }
}

/* Loading animation for form submission */
.btn-loading {
    position: relative;
    color: transparent !important;
}

.btn-loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid #ffffff;
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}