* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
    overflow: hidden;
}

/* Animated background elements */
.bg-animation {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0;
}

.floating-shape {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

    .floating-shape:nth-child(1) {
        width: 80px;
        height: 80px;
        top: 20%;
        left: 10%;
        animation-delay: 0s;
    }

    .floating-shape:nth-child(2) {
        width: 120px;
        height: 120px;
        top: 60%;
        right: 10%;
        animation-delay: 2s;
    }

    .floating-shape:nth-child(3) {
        width: 60px;
        height: 60px;
        bottom: 20%;
        left: 20%;
        animation-delay: 4s;
    }

@@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }

    50% {
        transform: translateY(-20px) rotate(10deg);
    }
}

.login-container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 50px 40px;
    width: 100%;
    max-width: 450px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
    position: relative;
    z-index: 1;
    animation: slideUp 0.8s ease;
}

@@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

.login-header {
    text-align: center;
    margin-bottom: 40px;
}

.logo-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(45deg, #667eea, #764ba2);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: white;
    margin: 0 auto 20px;
    animation: pulse 2s infinite;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
}

@@keyframes pulse {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }

    100% {
        transform: scale(1);
    }
}

.login-title {
    color: #2c3e50;
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
}

.login-subtitle {
    color: #666;
    font-size: 16px;
    line-height: 1.5;
}

.login-form {
    margin-bottom: 30px;
}

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

.form-label {
    display: block;
    color: #2c3e50;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
}

.form-input {
    width: 100%;
    padding: 16px 20px;
    border: 2px solid #e1e8ed;
    border-radius: 12px;
    font-size: 16px;
    background: #fafafa;
    transition: all 0.3s ease;
    outline: none;
}

    .form-input:focus {
        border-color: #667eea;
        background: white;
        box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    }

    .form-input:valid {
        border-color: #27ae60;
    }

.password-container {
    position: relative;
}

.password-toggle {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #666;
    cursor: pointer;
    font-size: 18px;
    padding: 5px;
}

    .password-toggle:hover {
        color: #667eea;
    }

.remember-forgot {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.checkbox-container {
    display: flex;
    align-items: center;
    gap: 8px;
}

    .checkbox-container input[type="checkbox"] {
        width: 18px;
        height: 18px;
        accent-color: #667eea;
    }

    .checkbox-container label {
        color: #666;
        font-size: 14px;
        cursor: pointer;
    }

.forgot-link {
    color: #667eea;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s ease;
}

    .forgot-link:hover {
        color: #764ba2;
        text-decoration: underline;
    }

.login-button {
    width: 100%;
    padding: 16px;
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
    position: relative;
    overflow: hidden;
}

    .login-button:hover {
        transform: translateY(-2px);
        box-shadow: 0 12px 35px rgba(102, 126, 234, 0.4);
    }

    .login-button:active {
        transform: translateY(0);
    }

    .login-button:disabled {
        opacity: 0.7;
        cursor: not-allowed;
        transform: none;
    }

.button-loader {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: 10px;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.divider {
    text-align: center;
    margin: 30px 0;
    position: relative;
    color: #999;
    font-size: 14px;
}

    .divider::before {
        content: '';
        position: absolute;
        top: 50%;
        left: 0;
        right: 0;
        height: 1px;
        background: #e1e8ed;
        z-index: 0;
    }

    .divider span {
        background: rgba(255, 255, 255, 0.95);
        padding: 0 20px;
        position: relative;
        z-index: 1;
    }

.sso-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.sso-button {
    width: 100%;
    padding: 14px;
    border: 2px solid #e1e8ed;
    border-radius: 12px;
    background: white;
    color: #2c3e50;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

    .sso-button:hover {
        border-color: #667eea;
        background: #f8f9ff;
        transform: translateY(-1px);
    }

.error-message {
    background: #fee;
    color: #c53030;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 14px;
    margin-bottom: 20px;
    border: 1px solid #fed7d7;
    display: none;
}

.success-message {
    background: #f0fff4;
    color: #276749;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 14px;
    margin-bottom: 20px;
    border: 1px solid #9ae6b4;
    display: none;
}

.footer {
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #e1e8ed;
    color: #666;
    font-size: 12px;
}

    .footer a {
        color: #667eea;
        text-decoration: none;
    }

        .footer a:hover {
            text-decoration: underline;
        }

@media (max-width: 480px) {
    .login-container {
        padding: 40px 30px;
        margin: 10px;
    }

    .login-title {
        font-size: 24px;
    }

    .logo-icon {
        width: 70px;
        height: 70px;
        font-size: 32px;
    }
}

/* Loading overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(102, 126, 234, 0.9);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    flex-direction: column;
    color: white;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}