body {
    font-family: 'Segoe UI', Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #f4f4f9 0%, #e8e8f0 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow-y: auto;
}

/* Background Animation */
.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

.particles {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle, rgba(40, 167, 69, 0.1) 1px, transparent 1px);
    background-size: 20px 20px;
    animation: particles 20s linear infinite;
}

@keyframes particles {
    from {
        background-position: 0 0;
    }
    to {
        background-position: 20px 20px;
    }
}

.circle {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(40, 167, 69, 0.1) 0%, rgba(32, 201, 151, 0.1) 100%);
    animation: float 15s infinite ease-in-out;
    filter: blur(40px);
}

.circle-1 {
    width: 300px;
    height: 300px;
    top: -50px;
    left: -50px;
    animation-delay: 0s;
}

.circle-2 {
    width: 200px;
    height: 200px;
    bottom: -20px;
    right: -20px;
    animation-delay: -5s;
}

.circle-3 {
    width: 150px;
    height: 150px;
    top: 50%;
    left: 50%;
    animation-delay: -10s;
}

@keyframes float {
    0% {
        transform: translate(0, 0) rotate(0deg);
    }
    50% {
        transform: translate(50px, 50px) rotate(180deg);
    }
    100% {
        transform: translate(0, 0) rotate(360deg);
    }
}

/* Container Styles */
.auth-container {
    width: 100%;
    max-width: 450px;
    padding: 20px;
    animation: fadeIn 0.5s ease-out;
    perspective: 1000px;
    margin: 40px auto;
    position: relative;
    z-index: 1;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px) rotateX(10deg);
    }
    to {
        opacity: 1;
        transform: translateY(0) rotateX(0);
    }
}

/* Auth Box Styles */
.auth-box {
    background: rgba(255, 255, 255, 0.95);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    transform-style: preserve-3d;
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    z-index: 2;
    overflow-y: auto;
    max-height: 90vh;
}

.auth-box:hover {
    transform: translateY(-5px) rotateX(2deg);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

/* Logo Container */
.logo-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 30px;
    padding: 20px;
    background: linear-gradient(135deg, rgba(40, 167, 69, 0.1) 0%, rgba(32, 201, 151, 0.1) 100%);
    border-radius: 15px;
    border: 1px solid rgba(40, 167, 69, 0.2);
}

.logo-container i {
    font-size: 2.5em;
    color: #28a745;
    background: white;
    padding: 15px;
    border-radius: 50%;
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.2);
}

.logo-container span {
    font-size: 1.8em;
    font-weight: bold;
    color: #2c3e50;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Auth Header Styles */
.auth-header {
    text-align: center;
    margin-bottom: 40px;
}

.auth-header h2 {
    color: #2c3e50;
    margin: 10px 0;
    font-size: 2em;
    position: relative;
    display: inline-block;
}

.auth-header h2::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background: linear-gradient(90deg, #28a745, #20c997);
    border-radius: 3px;
}

.auth-header p {
    color: #6c757d;
    margin: 0;
    font-size: 1.1em;
}

/* Form Styles */
.form-group {
    margin-bottom: 25px;
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    color: #2c3e50;
    font-weight: 600;
    font-size: 1.1em;
    transition: all 0.3s ease;
}

.input-with-icon {
    position: relative;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 12px;
    overflow: hidden;
    border: 2px solid #e9ecef;
    transition: all 0.3s ease;
}

.input-with-icon:hover {
    border-color: #28a745;
    box-shadow: 0 0 0 4px rgba(40, 167, 69, 0.1);
}

.input-with-icon i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #6c757d;
    transition: all 0.3s ease;
    font-size: 1.2em;
}

.input-with-icon input {
    width: 100%;
    padding: 15px 15px 15px 50px;
    border: none;
    border-radius: 12px;
    font-size: 1.1em;
    transition: all 0.3s ease;
    background: transparent;
}

.input-with-icon input:focus {
    outline: none;
}

.input-with-icon input:focus + i {
    color: #28a745;
}

/* Button Styles */
.btn-submit {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.2em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    overflow: hidden;
    position: relative;
    margin-top: 30px;
}

.btn-submit::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    animation: buttonShine 3s infinite;
}

@keyframes buttonShine {
    0% {
        left: -100%;
    }
    20%, 100% {
        left: 100%;
    }
}

.btn-submit span {
    position: relative;
    z-index: 1;
}

.btn-submit i {
    position: relative;
    z-index: 1;
    transition: transform 0.3s ease;
}

.btn-submit:hover {
    background: linear-gradient(135deg, #218838 0%, #1ba87a 100%);
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.btn-submit:hover i {
    transform: translateX(5px);
}

/* Divider Styles */
.divider {
    display: flex;
    align-items: center;
    margin: 30px 0;
    color: #6c757d;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, transparent, #e9ecef, transparent);
}

.divider span {
    padding: 5px 15px;
    font-size: 1em;
    background: white;
    border-radius: 20px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Switch Form Styles */
.switch-form {
    text-align: center;
    margin-top: 20px;
    color: #6c757d;
    font-size: 1.1em;
}

.switch-form a {
    color: #28a745;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
    padding: 5px 10px;
    border-radius: 20px;
    background: rgba(40, 167, 69, 0.1);
}

.switch-form a:hover {
    color: #218838;
    background: rgba(40, 167, 69, 0.2);
}

.switch-form a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, #28a745, #20c997);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.switch-form a:hover::after {
    transform: scaleX(1);
}

/* Toast Notifications */
.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 15px 25px;
    background: #28a745;
    color: white;
    border-radius: 12px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    z-index: 1000;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Responsive Design */
@media (max-width: 480px) {
    body {
        padding: 20px 0;
    }

    .auth-container {
        padding: 10px;
        margin: 20px auto;
    }
    
    .auth-box {
        padding: 20px;
        max-height: 85vh;
    }
    
    .circle {
        display: none;
    }

    .logo-container {
        padding: 15px;
    }

    .logo-container i {
        font-size: 2em;
        padding: 10px;
    }

    .logo-container span {
        font-size: 1.5em;
    }

    .input-with-icon input {
        padding: 12px 12px 12px 40px;
        font-size: 1em;
    }

    .btn-submit {
        padding: 14px;
        font-size: 1.1em;
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: rgba(40, 167, 69, 0.5);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(40, 167, 69, 0.7);
}