* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: #fff;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    overflow-x: hidden;
}

.login-container {
    width: 100%;
    max-width: 450px;
    position: relative;
    z-index: 1;
}

.login-box {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 40px 30px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.login-box:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.nav-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.nav-logo img {
    width: 100px;
    height: 100px;
    object-fit: contain;
    border-radius: 6px;
}

.circle-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.circle-logo img {
    width: 100px;
    height: 100px;
    border-radius: 50%; 
    object-fit: cover; 
    border: 2px solid #ddd; /* Optional border */
}



h2 {
    text-align: center;
    margin-bottom: 30px;
    font-weight: 600;
    color: #fff;
    position: relative;
    padding-bottom: 15px;
}

h2:after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 50%;
    transform: translateX(50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(to right, #4cc9f0, #4361ee);
    border-radius: 3px;
}

.form-group {
    margin-bottom: 25px;
    position: relative;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #e0e0e0;
    transition: color 0.3s ease;
}

.input-container {
    position: relative;
}

input {
    width: 100%;
    padding: 15px 45px 15px 15px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    color: #fff;
    font-size: 16px;
    transition: all 0.3s ease;
    outline: none;
}

input:focus {
    background: rgba(255, 255, 255, 0.12);
    border-color: #4cc9f0;
    box-shadow: 0 0 0 2px rgba(76, 201, 240, 0.3);
}

input:focus + .input-icon {
    color: #4cc9f0;
}

.input-icon {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: rgba(255, 255, 255, 0.5);
    transition: color 0.3s ease;
}

.password-toggle {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: color 0.3s ease;
}

.password-toggle:hover {
    color: #4cc9f0;
}

.btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(to right, #4361ee, #4cc9f0);
    border: none;
    border-radius: 10px;
    color: white;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 7px 15px rgba(76, 201, 240, 0.4);
}

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

.btn:after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 5px;
    height: 5px;
    background: rgba(255, 255, 255, 0.5);
    opacity: 0;
    border-radius: 100%;
    transform: scale(1, 1) translate(-50%);
    transform-origin: 50% 50%;
}

.btn:focus:not(:active)::after {
    animation: ripple 1s ease-out;
}

@keyframes ripple {
    0% {
        transform: scale(0, 0);
        opacity: 0.5;
    }
    100% {
        transform: scale(20, 20);
        opacity: 0;
    }
}

.login-links {
    margin-top: 25px;
    text-align: center;
}

.login-links a {
    color: #4cc9f0;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
    display: inline-block;
}

.login-links a:after {
    content: '';
    position: absolute;
    bottom: -2px;
    right: 0;
    width: 0;
    height: 2px;
    background: #4cc9f0;
    transition: width 0.3s ease;
}

.login-links a:hover {
    color: #fff;
}

.login-links a:hover:after {
    width: 100%;
}

.alert {
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 25px;
    text-align: center;
    font-weight: 500;
    animation: fadeIn 0.5s ease;
}

.alert-error {
    background: rgba(231, 76, 60, 0.2);
    border: 1px solid rgba(231, 76, 60, 0.5);
    color: #ff7675;
}

.alert-success {
    background: rgba(46, 204, 113, 0.2);
    border: 1px solid rgba(46, 204, 113, 0.5);
    color: #2ecc71;
}

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

.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0;
}

.floating-element {
    position: absolute;
    background: rgba(76, 201, 240, 0.1);
    border-radius: 50%;
    animation: float 15s infinite linear;
}

.floating-element:nth-child(1) {
    width: 80px;
    height: 80px;
    top: 10%;
    right: 10%;
    animation-duration: 20s;
}

.floating-element:nth-child(2) {
    width: 120px;
    height: 120px;
    top: 60%;
    right: 80%;
    animation-duration: 25s;
}

.floating-element:nth-child(3) {
    width: 60px;
    height: 60px;
    top: 80%;
    right: 20%;
    animation-duration: 15s;
}

.floating-element:nth-child(4) {
    width: 100px;
    height: 100px;
    top: 20%;
    right: 70%;
    animation-duration: 30s;
}

@keyframes float {
    0% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
    }
    100% {
        transform: translateY(0) rotate(360deg);
    }
}

.loading {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 30px;
    height: 30px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

@media (max-width: 480px) {
    .login-box {
        padding: 30px 20px;
    }
    
    h2 {
        font-size: 22px;
    }
    
    input {
        padding: 12px 40px 12px 12px;
    }
}